// yacyClient.java // ------------------------------------- // (C) by Michael Peter Christen; mc@yacy.net // first published on http://www.anomic.de // Frankfurt, Germany, 2004 // // $LastChangedDate$ // $LastChangedRevision$ // $LastChangedBy$ // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // // Using this software in any meaning (reading, learning, copying, compiling, // running) means that you agree that the Author(s) is (are) not responsible // for cost, loss of data or any harm that may be caused directly or indirectly // by usage of this softare or this documentation. The usage of this software // is on your own risk. The installation and usage (starting/running) of this // software may allow other people or application to access your computer and // any attached devices and is highly dependent on the configuration of the // software which must be done by the user of the software; the author(s) is // (are) also not responsible for proper configuration and usage of the // software, even if provoked by documentation provided together with // the software. // // Any changes to this file according to the GPL as documented in the file // gpl.txt aside this file in the shipment you received can be done to the // lines that follows this copyright notice here, but changes must not be // done inside the copyright notice above. A re-distribution must contain // the intact and unchanged copyright notice. // Contributions and changes to the program code must be marked as such. package de.anomic.yacy; import java.io.File; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.MalformedURLException; import java.net.URL; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.TreeMap; import org.apache.commons.httpclient.methods.multipart.ByteArrayPartSource; import org.apache.commons.httpclient.methods.multipart.Part; import de.anomic.crawler.ResultURLs; import de.anomic.crawler.retrieval.HTTPLoader; import de.anomic.data.Blacklist; import de.anomic.document.Word; import de.anomic.document.parser.xml.RSSFeed; import de.anomic.document.parser.xml.RSSReader; import de.anomic.http.client.DefaultCharsetFilePart; import de.anomic.http.client.DefaultCharsetStringPart; import de.anomic.http.client.Client; import de.anomic.http.client.RemoteProxyConfig; import de.anomic.http.metadata.HeaderFramework; import de.anomic.http.metadata.RequestHeader; import de.anomic.http.metadata.ResponseContainer; import de.anomic.kelondro.order.Base64Order; import de.anomic.kelondro.order.Bitfield; import de.anomic.kelondro.order.Digest; import de.anomic.kelondro.text.Reference; import de.anomic.kelondro.text.ReferenceContainer; import de.anomic.kelondro.text.ReferenceContainerCache; import de.anomic.kelondro.text.Segment; import de.anomic.kelondro.text.metadataPrototype.URLMetadataRow; import de.anomic.kelondro.text.referencePrototype.WordReference; import de.anomic.kelondro.util.ByteBuffer; import de.anomic.kelondro.util.FileUtils; import de.anomic.search.RankingProfile; import de.anomic.search.RankingProcess; import de.anomic.search.Switchboard; import de.anomic.search.SwitchboardConstants; import de.anomic.search.TextSnippet; import de.anomic.server.serverCore; import de.anomic.server.serverDomains; import de.anomic.tools.crypt; public final class yacyClient { /** * this is called to enrich the seed information by * - own address (if peer is behind a nat/router) * - check peer type (virgin/junior/senior/principal) * * to do this, we send a 'Hello' to another peer * this carries the following information: * 'iam' - own hash * 'youare' - remote hash, to verify that we are correct * 'key' - a session key that the remote peer may use to answer * and the own seed string * we expect the following information to be send back: * - 'yourip' the ip of the connection peer (we) * - 'yourtype' the type of this peer that the other peer checked by asking for a specific word * and the remote seed string * * one exceptional failure case is when we know the other's peers hash, the other peers responds correctly * but they appear to be another peer by comparisment of the other peer's hash * this works of course only if we know the other peer's hash. * * @return the number of new seeds */ public static int publishMySeed(final yacySeed mySeed, final yacyPeerActions peerActions, final String address, final String otherHash) { HashMap result = null; final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), null, salt); for (int retry = 0; retry < 4; retry++) try { // generate request post.add(new DefaultCharsetStringPart("count", "20")); post.add(new DefaultCharsetStringPart("seed", mySeed.genSeedStr(salt))); // send request final long start = System.currentTimeMillis(); final byte[] content = wput("http://" + address + "/yacy/hello.html", yacySeed.b64Hash2hexHash(otherHash) + ".yacyh", post, 30000, false); yacyCore.log.logInfo("yacyClient.publishMySeed thread '" + Thread.currentThread().getName() + "' contacted peer at " + address + ", received " + ((content == null) ? "null" : content.length) + " bytes, time = " + (System.currentTimeMillis() - start) + " milliseconds"); result = FileUtils.table(content, "UTF-8"); break; } catch (final Exception e) { if (Thread.currentThread().isInterrupted()) { yacyCore.log.logInfo("yacyClient.publishMySeed thread '" + Thread.currentThread().getName() + "' interrupted."); return -1; } yacyCore.log.logInfo("yacyClient.publishMySeed thread '" + Thread.currentThread().getName() + "', peer " + address + "; exception: " + e.getMessage() + "; retry = " + retry); // try again (go into loop) result = null; } if (result == null || result.size() < 3) { if (yacyCore.log.isFine()) yacyCore.log.logFine("yacyClient.publishMySeed result error: " + ((result == null) ? "result null" : ("result=" + result.toString()))); return -1; } // check consistency with expectation yacySeed otherPeer = null; String seed; if ((otherHash != null) && (otherHash.length() > 0) && ((seed = result.get("seed0")) != null)) { if (seed.length() > yacySeed.maxsize) { yacyCore.log.logInfo("hello/client 0: rejected contacting seed; too large (" + seed.length() + " > " + yacySeed.maxsize + ")"); } else { otherPeer = yacySeed.genRemoteSeed(seed, salt, false); if (otherPeer == null || !otherPeer.hash.equals(otherHash)) { if (yacyCore.log.isFine()) yacyCore.log.logFine("yacyClient.publishMySeed: consistency error: other peer '" + ((otherPeer==null)?"unknown":otherPeer.getName()) + "' wrong"); return -1; // no success } } } // set my own seed according to new information // we overwrite our own IP number only if (serverCore.useStaticIP) { mySeed.setIP(serverDomains.myPublicIP()); } else { final String myIP = result.get("yourip"); final String properIP = yacySeed.isProperIP(myIP); if (properIP == null) mySeed.setIP(myIP); } // change our seed-type String mytype = result.get(yacySeed.YOURTYPE); if (mytype == null) { mytype = ""; } final yacyAccessible accessible = new yacyAccessible(); if (mytype.equals(yacySeed.PEERTYPE_SENIOR)||mytype.equals(yacySeed.PEERTYPE_PRINCIPAL)) { accessible.IWasAccessed = true; if (mySeed.isPrincipal()) { mytype = yacySeed.PEERTYPE_PRINCIPAL; } } else { accessible.IWasAccessed = false; } accessible.lastUpdated = System.currentTimeMillis(); yacyCore.amIAccessibleDB.put(otherHash, accessible); /* * If we were reported as junior we have to check if your port forwarding channel is broken * If this is true we try to reconnect the sch channel to the remote server now. */ if (mytype.equalsIgnoreCase(yacySeed.PEERTYPE_JUNIOR)) { yacyCore.log.logInfo("yacyClient.publishMySeed: Peer '" + ((otherPeer==null)?"unknown":otherPeer.getName()) + "' reported us as junior."); } else if ((mytype.equalsIgnoreCase(yacySeed.PEERTYPE_SENIOR)) || (mytype.equalsIgnoreCase(yacySeed.PEERTYPE_PRINCIPAL))) { if (yacyCore.log.isFine()) yacyCore.log.logFine("yacyClient.publishMySeed: Peer '" + ((otherPeer==null)?"unknown":otherPeer.getName()) + "' reported us as " + mytype + ", accepted other peer."); } else { // wrong type report if (yacyCore.log.isFine()) yacyCore.log.logFine("yacyClient.publishMySeed: Peer '" + ((otherPeer==null)?"unknown":otherPeer.getName()) + "' reported us as " + mytype + ", rejecting other peer."); return -1; } if (mySeed.orVirgin().equals(yacySeed.PEERTYPE_VIRGIN)) mySeed.put(yacySeed.PEERTYPE, mytype); final String error = mySeed.isProper(true); if (error != null) { yacyCore.log.logSevere("yacyClient.publishMySeed mySeed error - not proper: " + error); return -1; } //final Date remoteTime = yacyCore.parseUniversalDate((String) result.get(yacySeed.MYTIME)); // read remote time // read the seeds that the peer returned and integrate them into own database int i = 0; int count = 0; String seedStr; while ((seedStr = result.get("seed" + i++)) != null) { // integrate new seed into own database // the first seed, "seed0" is the seed of the responding peer if (seedStr.length() > yacySeed.maxsize) { yacyCore.log.logInfo("hello/client: rejected contacting seed; too large (" + seedStr.length() + " > " + yacySeed.maxsize + ")"); } else { if (peerActions.peerArrival(yacySeed.genRemoteSeed(seedStr, salt, false), (i == 1))) count++; } } return count; } /** * send data to the server named by vhost * * @param address address of the server * @param vhost name of the server at address which should respond * @param post data to send (name-value-pairs) * @param gzipBody send with content gzip encoded * @return response body * @throws IOException */ /* private static byte[] wput(final String url, String vhost, final List post, boolean gzipBody) throws IOException { return wput(url, vhost, post, 10000, gzipBody); } */ /** * send data to the server named by vhost * * @param address address of the server * @param vhost name of the server at address which should respond * @param post data to send (name-value-pairs) * @param timeout in milliseconds * @return response body * @throws IOException */ private static byte[] wput(final String url, final String vhost, final List post, final int timeout) throws IOException { return wput(url, vhost, post, timeout, false); } /** * send data to the server named by vhost * * @param address address of the server * @param vhost name of the server at address which should respond * @param post data to send (name-value-pairs) * @param timeout in milliseconds * @param gzipBody send with content gzip encoded * @return response body * @throws IOException */ private static byte[] wput(final String url, final String vhost, final List post, final int timeout, final boolean gzipBody) throws IOException { final RequestHeader header = new RequestHeader(); header.put(HeaderFramework.USER_AGENT, HTTPLoader.yacyUserAgent); header.put(HeaderFramework.HOST, vhost); final Client client = new Client(timeout, header); client.setProxy(proxyConfig()); ResponseContainer res = null; byte[] content = null; try { // send request/data res = client.POST(url, post, gzipBody); content = res.getData(); } finally { if(res != null) { // release connection res.closeStream(); } } return content; } /** * @see wput * @param target * @param filename * @param post * @return * @throws IOException */ private static byte[] postToFile(final yacySeed target, final String filename, final List post, final int timeout) throws IOException { return wput("http://" + target.getClusterAddress() + "/yacy/" + filename, target.getHexHash() + ".yacyh", post, timeout, false); } private static byte[] postToFile(final yacySeedDB seedDB, final String targetHash, final String filename, final List post, final int timeout) throws IOException { return wput("http://" + targetAddress(seedDB, targetHash) + "/yacy/" + filename, yacySeed.b64Hash2hexHash(targetHash)+ ".yacyh", post, timeout, false); } public static yacySeed querySeed(final yacySeed target, final String seedHash) { // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), target.hash, salt); post.add(new DefaultCharsetStringPart("object", "seed")); post.add(new DefaultCharsetStringPart("env", seedHash)); // send request try { final byte[] content = postToFile(target, "query.html", post, 10000); final HashMap result = FileUtils.table(content, "UTF-8"); if (result == null || result.size() == 0) { return null; } //final Date remoteTime = yacyCore.parseUniversalDate((String) result.get(yacySeed.MYTIME)); // read remote time return yacySeed.genRemoteSeed(result.get("response"), salt, false); } catch (final Exception e) { yacyCore.log.logSevere("yacyClient.querySeed error:" + e.getMessage()); return null; } } public static int queryRWICount(final yacySeed target, final String wordHash) { // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), target.hash, salt); post.add(new DefaultCharsetStringPart("object", "rwicount")); post.add(new DefaultCharsetStringPart("ttl", "0")); post.add(new DefaultCharsetStringPart("env", wordHash)); // send request try { final byte[] content = postToFile(target, "query.html", post, 5000); final HashMap result = FileUtils.table(content, "UTF-8"); if (result == null || result.size() == 0) { return -1; } return Integer.parseInt(result.get("response")); } catch (final Exception e) { yacyCore.log.logSevere("yacyClient.queryRWICount error:" + e.getMessage()); return -1; } } public static int queryUrlCount(final yacySeed target) { if (target == null) { return -1; } // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), target.hash, salt); post.add(new DefaultCharsetStringPart("object", "lurlcount")); post.add(new DefaultCharsetStringPart("ttl", "0")); post.add(new DefaultCharsetStringPart("env", "")); // send request try { final byte[] content = postToFile(target, "query.html", post, 5000); final HashMap result = FileUtils.table(content, "UTF-8"); if ((result == null) || (result.size() == 0)) return -1; final String resp = result.get("response"); if (resp == null) { return -1; } try { return Integer.parseInt(resp); } catch (final NumberFormatException e) { return -1; } } catch (final IOException e) { yacyCore.log.logSevere("yacyClient.queryUrlCount error asking peer '" + target.getName() + "':" + e.toString()); return -1; } } public static RSSFeed queryRemoteCrawlURLs(final yacySeedDB seedDB, final yacySeed target, final int maxCount, final long maxTime) { // returns a list of if (target == null) { return null; } // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), target.hash, salt); post.add(new DefaultCharsetStringPart("call", "remotecrawl")); post.add(new DefaultCharsetStringPart("count", Integer.toString(maxCount))); post.add(new DefaultCharsetStringPart("time", Long.toString(maxTime))); // send request try { /* a long time-out is needed */ final byte[] result = wput("http://" + target.getClusterAddress() + "/yacy/urls.xml", target.getHexHash() + ".yacyh", post, (int) maxTime); final RSSReader reader = RSSReader.parse(result); if (reader == null) { yacyCore.log.logWarning("yacyClient.queryRemoteCrawlURLs failed asking peer '" + target.getName() + "': probably bad response from remote peer (1), reader == null"); target.put(yacySeed.RCOUNT, "0"); seedDB.update(target.hash, target); // overwrite number of remote-available number to avoid that this peer is called again (until update is done by peer ping) //e.printStackTrace(); return null; } final RSSFeed feed = reader.getFeed(); if (feed == null) { // case where the rss reader does not understand the content yacyCore.log.logWarning("yacyClient.queryRemoteCrawlURLs failed asking peer '" + target.getName() + "': probably bad response from remote peer (2)"); System.out.println("***DEBUG*** rss input = " + new String(result)); target.put(yacySeed.RCOUNT, "0"); seedDB.update(target.hash, target); // overwrite number of remote-available number to avoid that this peer is called again (until update is done by peer ping) //e.printStackTrace(); return null; } return feed; } catch (final IOException e) { yacyCore.log.logSevere("yacyClient.queryRemoteCrawlURLs error asking peer '" + target.getName() + "':" + e.toString()); return null; } } @SuppressWarnings("unchecked") public static String[] search( final yacySeed mySeed, final String wordhashes, final String excludehashes, final String urlhashes, final String prefer, final String filter, final String language, final String sitehash, final String authorhash, final int count, final int maxDistance, final boolean global, final int partitions, final yacySeed target, final Segment indexSegment, final ResultURLs crawlResults, final RankingProcess containerCache, final Map> abstractCache, final Blacklist blacklist, final RankingProfile rankingProfile, final Bitfield constraint ) { // send a search request to peer with remote Hash // this mainly converts the words into word hashes // INPUT: // iam : complete seed of the requesting peer // youare : seed hash of the target peer, used for testing network stability // key : transmission key for response // search : a list of search words // hsearch : a string of word hashes // fwdep : forward depth. if "0" then peer may NOT ask another peer for more results // fwden : forward deny, a list of seed hashes. They may NOT be target of forward hopping // count : maximum number of wanted results // global : if "true", then result may consist of answers from other peers // partitions : number of remote peers that are asked (for evaluation of QPM) // duetime : maximum time that a peer should spent to create a result // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), target.hash, salt); post.add(new DefaultCharsetStringPart("myseed", mySeed.genSeedStr(salt))); post.add(new DefaultCharsetStringPart("count", Integer.toString(Math.max(10, count)))); post.add(new DefaultCharsetStringPart("resource", ((global) ? "global" : "local"))); post.add(new DefaultCharsetStringPart("partitions", Integer.toString(partitions))); post.add(new DefaultCharsetStringPart("query", wordhashes)); post.add(new DefaultCharsetStringPart("exclude", excludehashes)); post.add(new DefaultCharsetStringPart("duetime", "1000")); post.add(new DefaultCharsetStringPart("urls", urlhashes)); post.add(new DefaultCharsetStringPart("prefer", prefer)); post.add(new DefaultCharsetStringPart("filter", filter)); post.add(new DefaultCharsetStringPart("language", language)); post.add(new DefaultCharsetStringPart("sitehash", sitehash)); post.add(new DefaultCharsetStringPart("authorhash", authorhash)); post.add(new DefaultCharsetStringPart("ttl", "0")); post.add(new DefaultCharsetStringPart("maxdist", Integer.toString(maxDistance))); post.add(new DefaultCharsetStringPart("profile", crypt.simpleEncode(rankingProfile.toExternalString()))); post.add(new DefaultCharsetStringPart("constraint", (constraint == null) ? "" : constraint.exportB64())); if (abstractCache != null) post.add(new DefaultCharsetStringPart("abstracts", "auto")); final long timestamp = System.currentTimeMillis(); // send request HashMap result = null; try { result = FileUtils.table(wput("http://" + target.getClusterAddress() + "/yacy/search.html", target.getHexHash() + ".yacyh", post, 60000), "UTF-8"); } catch (final IOException e) { yacyCore.log.logInfo("SEARCH failed, Peer: " + target.hash + ":" + target.getName() + " (" + e.getMessage() + "), score=" + target.selectscore); //yacyCore.peerActions.peerDeparture(target, "search request to peer created io exception: " + e.getMessage()); return null; } if ((result == null) || (result.size() == 0)) { if (yacyCore.log.isFine()) yacyCore.log.logFine("SEARCH failed FROM " + target.hash + ":" + target.getName() + " (zero response), score=" + target.selectscore); return null; } // compute all computation times final long totalrequesttime = System.currentTimeMillis() - timestamp; // OUTPUT: // version : application version of responder // uptime : uptime in seconds of responder // total : number of total available LURL's for this search // count : number of returned LURL's for this search // resource : LURL of search // fwhop : hops (depth) of forwards that had been performed to construct this result // fwsrc : peers that helped to construct this result // fwrec : peers that would have helped to construct this result (recommendations) // searchtime : time that the peer actually spent to create the result // references : references (search hints) that was calculated during search // now create a plasmaIndex out of this result // System.out.println("yacyClient: " + ((urlhashes.length() == 0) ? "primary" : "secondary")+ " search result = " + result.toString()); // debug int results = 0, joincount = 0; try { results = Integer.parseInt(result.get("count")); joincount = Integer.parseInt(result.get("joincount")); } catch (final NumberFormatException e) { yacyCore.log.logInfo("SEARCH failed FROM " + target.hash + ":" + target.getName() + ", wrong output format: " + e.getMessage()); //yacyCore.peerActions.peerDeparture(target, "search request to peer created number format exception"); return null; } // System.out.println("***result count " + results); // create containers final int words = wordhashes.length() / yacySeedDB.commonHashLength; assert words > 0 : "wordhashes = " + wordhashes; final ReferenceContainer[] container = new ReferenceContainer[words]; for (int i = 0; i < words; i++) { container[i] = ReferenceContainer.emptyContainer(Segment.wordReferenceFactory, wordhashes.substring(i * yacySeedDB.commonHashLength, (i + 1) * yacySeedDB.commonHashLength).getBytes(), count); } // insert results to containers URLMetadataRow urlEntry; final String[] urls = new String[results]; for (int n = 0; n < results; n++) { // get one single search result urlEntry = URLMetadataRow.importEntry(result.get("resource" + n)); if (urlEntry == null) continue; assert (urlEntry.hash().length() == 12) : "urlEntry.hash() = " + urlEntry.hash(); if (urlEntry.hash().length() != 12) continue; // bad url hash final URLMetadataRow.Components metadata = urlEntry.metadata(); if (blacklist.isListed(Blacklist.BLACKLIST_SEARCH, metadata.url())) { yacyCore.log.logInfo("remote search (client): filtered blacklisted url " + metadata.url() + " from peer " + target.getName()); continue; // block with backlist } final String urlRejectReason = Switchboard.getSwitchboard().crawlStacker.urlInAcceptedDomain(metadata.url()); if (urlRejectReason != null) { yacyCore.log.logInfo("remote search (client): rejected url '" + metadata.url() + "' (" + urlRejectReason + ") from peer " + target.getName()); continue; // reject url outside of our domain } // save the url entry Reference entry; if (urlEntry.word() == null) { yacyCore.log.logWarning("remote search (client): no word attached from peer " + target.getName() + ", version " + target.getVersion()); continue; // no word attached } // the search-result-url transports all the attributes of word indexes entry = urlEntry.word(); if (!(entry.metadataHash().equals(urlEntry.hash()))) { yacyCore.log.logInfo("remote search (client): url-hash " + urlEntry.hash() + " does not belong to word-attached-hash " + entry.metadataHash() + "; url = " + metadata.url() + " from peer " + target.getName()); continue; // spammed } // passed all checks, store url try { indexSegment.urlMetadata().store(urlEntry); crawlResults.stack(urlEntry, mySeed.hash, target.hash, 2); } catch (final IOException e) { yacyCore.log.logSevere("could not store search result", e); continue; // db-error } if (urlEntry.snippet() != null) { // we don't store the snippets along the url entry, // because they are search-specific. // instead, they are placed in a snipped-search cache. // System.out.println("--- RECEIVED SNIPPET '" + link.snippet() + "'"); TextSnippet.storeToCache(wordhashes, urlEntry.hash(), urlEntry.snippet()); } // add the url entry to the word indexes for (int m = 0; m < words; m++) { container[m].add(entry); } // store url hash for statistics urls[n] = urlEntry.hash(); } // store remote result to local result container synchronized (containerCache) { // insert one container into the search result buffer containerCache.add(container[0], false, joincount); // one is enough // integrate remote topwords final String references = result.get("references"); yacyCore.log.logInfo("remote search (client): peer " + target.getName() + " sent references " + references); if (references != null) { // add references twice, so they can be countet (must have at least 2 entries) containerCache.addTopic(references.split(",")); containerCache.addTopic(references.split(",")); } } // read index abstract if (abstractCache != null) { final Iterator> i = result.entrySet().iterator(); Map.Entry entry; TreeMap singleAbstract; String wordhash; ByteBuffer ci; while (i.hasNext()) { entry = i.next(); if (entry.getKey().startsWith("indexabstract.")) { wordhash = entry.getKey().substring(14); synchronized (abstractCache) { singleAbstract = abstractCache.get(wordhash); // a mapping from url-hashes to a string of peer-hashes if (singleAbstract == null) singleAbstract = new TreeMap(); try { ci = new ByteBuffer(entry.getValue().getBytes("UTF-8")); } catch (UnsupportedEncodingException e) { e.printStackTrace(); return null; } //System.out.println("DEBUG-ABSTRACTFETCH: for word hash " + wordhash + " received " + ci.toString()); ReferenceContainer.decompressIndex(singleAbstract, ci, target.hash); abstractCache.put(wordhash, singleAbstract); } } } } // insert the containers to the index for (int m = 0; m < words; m++) try { indexSegment.termIndex().add(container[m]); } catch (IOException e) { e.printStackTrace(); } // generate statistics long searchtime; try { searchtime = Integer.parseInt(result.get("searchtime")); } catch (final NumberFormatException e) { searchtime = totalrequesttime; } if (yacyCore.log.isFine()) yacyCore.log.logFine("SEARCH " + results + " URLS FROM " + target.hash + ":" + target.getName() + ", score=" + target.selectscore + ", searchtime=" + searchtime + ", netdelay=" + (totalrequesttime - searchtime) + ", references=" + result.get("references")); return urls; } public static HashMap permissionMessage(final yacySeedDB seedDB, final String targetHash) { // ask for allowed message size and attachement size // if this replies null, the peer does not answer // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), targetHash, salt); post.add(new DefaultCharsetStringPart("process", "permission")); // send request try { final byte[] content = postToFile(seedDB, targetHash, "message.html", post, 5000); final HashMap result = FileUtils.table(content, "UTF-8"); return result; } catch (final Exception e) { // most probably a network time-out exception yacyCore.log.logSevere("yacyClient.permissionMessage error:" + e.getMessage()); return null; } } public static HashMap postMessage(final yacySeedDB seedDB, final String targetHash, final String subject, final byte[] message) { // this post a message to the remote message board // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), targetHash, salt); post.add(new DefaultCharsetStringPart("process", "post")); post.add(new DefaultCharsetStringPart("myseed", seedDB.mySeed().genSeedStr(salt))); post.add(new DefaultCharsetStringPart("subject", subject)); try { post.add(new DefaultCharsetStringPart("message", new String(message, "UTF-8"))); } catch (final UnsupportedEncodingException e) { post.add(new DefaultCharsetStringPart("message", new String(message))); } // send request try { final byte[] content = postToFile(seedDB, targetHash, "message.html", post, 20000); final HashMap result = FileUtils.table(content, "UTF-8"); return result; } catch (final Exception e) { yacyCore.log.logSevere("yacyClient.postMessage error:" + e.getMessage()); return null; } } public static String targetAddress(final yacySeedDB seedDB, final String targetHash) { // find target address String address; if (targetHash.equals(seedDB.mySeed().hash)) { address = seedDB.mySeed().getClusterAddress(); } else { final yacySeed targetSeed = seedDB.getConnected(targetHash); if (targetSeed == null) { return null; } address = targetSeed.getClusterAddress(); } if (address == null) address = "localhost:8080"; return address; } public static HashMap transferPermission(final String targetAddress, final long filesize, final String filename) { // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), null, salt); post.add(new DefaultCharsetStringPart("process", "permission")); post.add(new DefaultCharsetStringPart("purpose", "crcon")); post.add(new DefaultCharsetStringPart("filename", filename)); post.add(new DefaultCharsetStringPart("filesize", Long.toString(filesize))); post.add(new DefaultCharsetStringPart("can-send-protocol", "http")); // send request try { final byte[] content = wput("http://" + targetAddress + "/yacy/transfer.html", targetAddress, post, 10000); final HashMap result = FileUtils.table(content, "UTF-8"); return result; } catch (final Exception e) { // most probably a network time-out exception yacyCore.log.logSevere("yacyClient.permissionTransfer error:" + e.getMessage()); return null; } } public static HashMap transferStore(final String targetAddress, final String access, final String filename, final byte[] file) { // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), null, salt); post.add(new DefaultCharsetStringPart("process", "store")); post.add(new DefaultCharsetStringPart("purpose", "crcon")); post.add(new DefaultCharsetStringPart("filesize", Long.toString(file.length))); post.add(new DefaultCharsetStringPart("md5", Digest.encodeMD5Hex(file))); post.add(new DefaultCharsetStringPart("access", access)); post.add(new DefaultCharsetFilePart("filename", new ByteArrayPartSource(filename, file))); // send request try { final byte[] content = wput("http://" + targetAddress + "/yacy/transfer.html", targetAddress, post, 20000); final HashMap result = FileUtils.table(content, "UTF-8"); return result; } catch (final Exception e) { yacyCore.log.logSevere("yacyClient.postMessage error:" + e.getMessage()); return null; } } public static String transfer(final String targetAddress, final String filename, final byte[] file) { final HashMap phase1 = transferPermission(targetAddress, file.length, filename); if (phase1 == null) return "no connection to remote address " + targetAddress + "; phase 1"; final String access = phase1.get("access"); final String nextaddress = phase1.get("address"); final String protocol = phase1.get("protocol"); //String path = (String) phase1.get("path"); //String maxsize = (String) phase1.get("maxsize"); String response = phase1.get("response"); if ((response == null) || (protocol == null) || (access == null)) return "wrong return values from other peer; phase 1"; if (!(response.equals("ok"))) return "remote peer rejected transfer: " + response; final String accesscode = Digest.encodeMD5Hex(Base64Order.standardCoder.encodeString(access)); if (protocol.equals("http")) { final HashMap phase2 = transferStore(nextaddress, accesscode, filename, file); if (phase2 == null) return "no connection to remote address " + targetAddress + "; phase 2"; response = phase2.get("response"); if (response == null) return "wrong return values from other peer; phase 2"; if (!(response.equals("ok"))) { return "remote peer failed with transfer: " + response; } return null; } return "wrong protocol: " + protocol; } public static HashMap crawlReceipt(final yacySeed mySeed, final yacySeed target, final String process, final String result, final String reason, final URLMetadataRow entry, final String wordhashes) { assert (target != null); assert (mySeed != null); assert (mySeed != target); /* the result can have one of the following values: negative cases, no retry unavailable - the resource is not avaiable (a broken link); not found or interrupted robot - a robot-file has denied to crawl that resource negative cases, retry possible rejected - the peer has rejected to load the resource dequeue - peer too busy - rejected to crawl positive cases with crawling fill - the resource was loaded and processed update - the resource was already in database but re-loaded and processed positive cases without crawling known - the resource is already in database, believed to be fresh and not reloaded stale - the resource was reloaded but not processed because source had no changes */ // prepare request final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), target.hash, salt); post.add(new DefaultCharsetStringPart("process", process)); post.add(new DefaultCharsetStringPart("urlhash", ((entry == null) ? "" : entry.hash()))); post.add(new DefaultCharsetStringPart("result", result)); post.add(new DefaultCharsetStringPart("reason", reason)); post.add(new DefaultCharsetStringPart("wordh", wordhashes)); post.add(new DefaultCharsetStringPart("lurlEntry", ((entry == null) ? "" : crypt.simpleEncode(entry.toString(), salt)))); // determining target address final String address = target.getClusterAddress(); if (address == null) { return null; } // send request try { final byte[] content = wput("http://" + address + "/yacy/crawlReceipt.html", target.getHexHash() + ".yacyh", post, 10000); return FileUtils.table(content, "UTF-8"); } catch (final Exception e) { // most probably a network time-out exception yacyCore.log.logSevere("yacyClient.crawlReceipt error:" + e.getMessage()); return null; } } /** * transfer the index. If the transmission fails, return a string describing the cause. * If everything is ok, return null. * @param targetSeed * @param indexes * @param urlCache * @param gzipBody * @param timeout * @return */ public static String transferIndex( final yacySeed targetSeed, final ReferenceContainerCache indexes, final HashMap urlCache, final boolean gzipBody, final int timeout) { final HashMap resultObj = new HashMap(); int payloadSize = 0; try { // check if we got all necessary urls in the urlCache (only for debugging) Iterator eenum; Reference entry; for (ReferenceContainer ic: indexes) { eenum = ic.entries(); while (eenum.hasNext()) { entry = eenum.next(); if (urlCache.get(entry.metadataHash()) == null) { if (yacyCore.log.isFine()) yacyCore.log.logFine("DEBUG transferIndex: to-send url hash '" + entry.metadataHash() + "' is not contained in urlCache"); } } } // transfer the RWI without the URLs HashMap in = transferRWI(targetSeed, indexes, gzipBody, timeout); resultObj.put("resultTransferRWI", in); if (in == null) { return "no connection from transferRWI"; } if (in.containsKey("indexPayloadSize")) payloadSize += Integer.parseInt(in.get("indexPayloadSize")); String result = in.get("result"); if (result == null) { return "no result from transferRWI"; } if (!(result.equals("ok"))) { return result; } // in now contains a list of unknown hashes String uhss = in.get("unknownURL"); if (uhss == null) { return "no unknownURL tag in response"; } uhss = uhss.trim(); if (uhss.length() == 0 || uhss.equals(",")) { return null; } // all url's known, we are ready here final String[] uhs = uhss.split(","); if (uhs.length == 0) { return null; } // all url's known // extract the urlCache from the result final URLMetadataRow[] urls = new URLMetadataRow[uhs.length]; for (int i = 0; i < uhs.length; i++) { urls[i] = urlCache.get(uhs[i]); if (urls[i] == null) { if (yacyCore.log.isFine()) yacyCore.log.logFine("DEBUG transferIndex: requested url hash '" + uhs[i] + "', unknownURL='" + uhss + "'"); } } in = transferURL(targetSeed, urls, gzipBody, timeout); resultObj.put("resultTransferURL", in); if (in == null) { return "no connection from transferURL"; } if (in.containsKey("urlPayloadSize")) payloadSize += Integer.parseInt(in.get("urlPayloadSize")); result = in.get("result"); if (result == null) { return "no result from transferURL"; } if (!(result.equals("ok"))) { return result; } return null; } finally { resultObj.put("payloadSize", Integer.valueOf(payloadSize)); } } private static HashMap transferRWI( final yacySeed targetSeed, final ReferenceContainerCache indexes, boolean gzipBody, final int timeout) { final String address = targetSeed.getPublicAddress(); if (address == null) { yacyCore.log.logWarning("no address for transferRWI"); return null; } // prepare post values final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), targetSeed.hash, salt); // enabling gzip compression for post request body if (gzipBody && (targetSeed.getVersion() < yacyVersion.YACY_SUPPORTS_GZIP_POST_REQUESTS_CHUNKED)) { gzipBody = false; } post.add(new DefaultCharsetStringPart("wordc", Integer.toString(indexes.size()))); int indexcount = 0; final StringBuilder entrypost = new StringBuilder(indexes.size() * 73); Iterator eenum; Reference entry; for (ReferenceContainer ic: indexes) { eenum = ic.entries(); while (eenum.hasNext()) { entry = eenum.next(); entrypost.append(ic.getTermHashAsString()) .append(entry.toPropertyForm()) .append(serverCore.CRLF_STRING); indexcount++; } } if (indexcount == 0) { // nothing to do but everything ok final HashMap result = new HashMap(2); result.put("result", "ok"); result.put("unknownURL", ""); return result; } post.add(new DefaultCharsetStringPart("entryc", Integer.toString(indexcount))); post.add(new DefaultCharsetStringPart("indexes", entrypost.toString())); try { final byte[] content = wput("http://" + address + "/yacy/transferRWI.html", targetSeed.getHexHash() + ".yacyh", post, timeout, gzipBody); final ArrayList v = FileUtils.strings(content, "UTF-8"); // this should return a list of urlhashes that are unknown final HashMap result = FileUtils.table(v); // return the transfered index data in bytes (for debugging only) result.put("indexPayloadSize", Integer.toString(entrypost.length())); return result; } catch (final Exception e) { yacyCore.log.logInfo("yacyClient.transferRWI error:" + e.getMessage()); return null; } } private static HashMap transferURL(final yacySeed targetSeed, final URLMetadataRow[] urls, boolean gzipBody, final int timeout) { // this post a message to the remote message board final String address = targetSeed.getPublicAddress(); if (address == null) { return null; } // prepare post values final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), targetSeed.hash, salt); // enabling gzip compression for post request body if (gzipBody && (targetSeed.getVersion() < yacyVersion.YACY_SUPPORTS_GZIP_POST_REQUESTS_CHUNKED)) { gzipBody = false; } String resource = ""; int urlc = 0; int urlPayloadSize = 0; for (int i = 0; i < urls.length; i++) { if (urls[i] != null) { resource = urls[i].toString(); if (resource != null) { post.add(new DefaultCharsetStringPart("url" + urlc, resource)); urlPayloadSize += resource.length(); urlc++; } } } post.add(new DefaultCharsetStringPart("urlc", Integer.toString(urlc))); try { final byte[] content = wput("http://" + address + "/yacy/transferURL.html", targetSeed.getHexHash() + ".yacyh", post, timeout, gzipBody); final ArrayList v = FileUtils.strings(content, "UTF-8"); final HashMap result = FileUtils.table(v); // return the transfered url data in bytes (for debugging only) result.put("urlPayloadSize", Integer.toString(urlPayloadSize)); return result; } catch (final Exception e) { yacyCore.log.logSevere("yacyClient.transferURL error:" + e.getMessage()); return null; } } public static HashMap getProfile(final yacySeed targetSeed) { // this post a message to the remote message board final String salt = crypt.randomSalt(); final List post = yacyNetwork.basicRequestPost(Switchboard.getSwitchboard(), targetSeed.hash, salt); String address = targetSeed.getClusterAddress(); if (address == null) { address = "localhost:8080"; } try { final byte[] content = wput("http://" + address + "/yacy/profile.html", targetSeed.getHexHash() + ".yacyh", post, 5000); return FileUtils.table(content, "UTF-8"); } catch (final Exception e) { yacyCore.log.logSevere("yacyClient.getProfile error:" + e.getMessage()); return null; } } /** * proxy for "to YaCy connections" * @return */ private static final RemoteProxyConfig proxyConfig() { final RemoteProxyConfig p = RemoteProxyConfig.getRemoteProxyConfig(); return ((p != null) && (p.useProxy()) && (p.useProxy4Yacy())) ? p : null; } public static void main(final String[] args) { if(args.length > 1) { System.out.println("yacyClient Test"); try { final Switchboard sb = new Switchboard(new File(args[0]), "httpProxy.init", "DATA/SETTINGS/yacy.conf", false); /*final yacyCore core =*/ new yacyCore(sb); sb.loadSeedLists(); final yacySeed target = sb.peers.getConnected(args[1]); final byte[] wordhashe = Word.word2hash("test"); //System.out.println("permission=" + permissionMessage(args[1])); final RequestHeader reqHeader = new RequestHeader(); reqHeader.put(HeaderFramework.USER_AGENT, HTTPLoader.crawlerUserAgent); final byte[] content = Client.wget( "http://" + target.getPublicAddress() + "/yacy/search.html" + "?myseed=" + sb.peers.mySeed().genSeedStr(null) + "&youare=" + target.hash + "&key=" + "&myseed=" + sb.peers.mySeed() .genSeedStr(null) + "&count=10" + "&resource=global" + "&query=" + new String(wordhashe) + "&network.unit.name=" + Switchboard.getSwitchboard().getConfig(SwitchboardConstants.NETWORK_NAME, yacySeed.DFLT_NETWORK_UNIT), reqHeader, 10000, target.getHexHash() + ".yacyh"); final HashMap result = FileUtils.table(content, "UTF-8"); System.out.println("Result=" + result.toString()); } catch (final Exception e) { e.printStackTrace(); } System.exit(0); } else if(args.length == 1) { System.out.println("wput Test"); // connection params URL url = null; try { url = new URL(args[0]); } catch (final MalformedURLException e) { e.printStackTrace(); } if(url == null) { System.exit(1); return; } final String vhost = url.getHost(); final int timeout = 10000; final boolean gzipBody = false; // data final List post = new ArrayList(); post.add(new DefaultCharsetStringPart("process", "permission")); post.add(new DefaultCharsetStringPart("purpose", "crcon")); //post.add(new FilePart("filename", new ByteArrayPartSource(filename, file))); // do it! try { final byte[] response = wput(url.toString(), vhost, post, timeout, gzipBody); System.out.println(new String(response)); } catch (final IOException e) { e.printStackTrace(); } } } }