// transferURL.java // ----------------------- // part of the AnomicHTTPD caching proxy // (C) by Michael Peter Christen; mc@yacy.net // first published on http://www.anomic.de // Frankfurt, Germany, 2004, 2005 // // $LastChangedDate$ // $LastChangedRevision$ // $LastChangedBy$ // // 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 // You must compile this file with // javac -classpath .:../classes transferRWI.java import java.io.IOException; import java.text.ParseException; import net.yacy.cora.document.RSSMessage; import net.yacy.cora.protocol.RequestHeader; import net.yacy.kelondro.data.meta.URIMetadataRow; import net.yacy.kelondro.logging.Log; import net.yacy.kelondro.util.DateFormatter; import net.yacy.repository.Blacklist; import de.anomic.crawler.retrieval.EventOrigin; import de.anomic.search.Segments; import de.anomic.search.Switchboard; import de.anomic.server.serverCore; import de.anomic.server.serverObjects; import de.anomic.server.serverSwitch; import de.anomic.yacy.yacyCore; import de.anomic.yacy.yacyNetwork; import de.anomic.yacy.yacySeed; import de.anomic.yacy.yacyChannel; public final class transferURL { public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) throws InterruptedException { final long start = System.currentTimeMillis(); long freshdate = 0; try {freshdate = DateFormatter.parseShortDay("20061101").getTime();} catch (final ParseException e1) {} // return variable that accumulates replacements final Switchboard sb = (Switchboard) env; final serverObjects prop = new serverObjects(); if ((post == null) || (env == null)) return prop; if (!yacyNetwork.authentifyRequest(post, env)) return prop; // request values final String iam = post.get("iam", ""); // seed hash of requester final String youare = post.get("youare", ""); // seed hash of the target peer, needed for network stability // final String key = post.get("key", ""); // transmission key final int urlc = post.getInt("urlc", 0); // number of transported urls final boolean granted = sb.getConfig("allowReceiveIndex", "false").equals("true"); final boolean blockBlacklist = sb.getConfig("indexReceiveBlockBlacklist", "false").equals("true"); // response values String result = ""; String doublevalues = "0"; final yacySeed otherPeer = sb.peers.get(iam); final String otherPeerName = iam + ":" + ((otherPeer == null) ? "NULL" : (otherPeer.getName() + "/" + otherPeer.getVersion())); if ((youare == null) || (!youare.equals(sb.peers.mySeed().hash))) { yacyCore.log.logInfo("Rejecting URLs from peer " + otherPeerName + ". Wrong target. Wanted peer=" + youare + ", iam=" + sb.peers.mySeed().hash); result = "wrong_target"; } else if ((!granted) || (sb.isRobinsonMode())) { yacyCore.log.logInfo("Rejecting URLs from peer " + otherPeerName + ". Not granted."); result = "error_not_granted"; } else { int received = 0; int blocked = 0; final int sizeBefore = sb.indexSegments.urlMetadata(Segments.Process.DHTIN).size(); // read the urls from the other properties and store String urls; URIMetadataRow lEntry; for (int i = 0; i < urlc; i++) { serverCore.checkInterruption(); // read new lurl-entry urls = post.get("url" + i); if (urls == null) { if (yacyCore.log.isFine()) yacyCore.log.logFine("transferURL: got null URL-string from peer " + otherPeerName); blocked++; continue; } // parse new lurl-entry lEntry = URIMetadataRow.importEntry(urls); if (lEntry == null) { yacyCore.log.logWarning("transferURL: received invalid URL (entry null) from peer " + otherPeerName + "\n\tURL Property: " + urls); blocked++; continue; } // check if entry is well-formed final URIMetadataRow.Components metadata = lEntry.metadata(); if (metadata == null || metadata.url() == null) { yacyCore.log.logWarning("transferURL: received invalid URL from peer " + otherPeerName + "\n\tURL Property: " + urls); blocked++; continue; } // check whether entry is too old if (lEntry.freshdate().getTime() <= freshdate) { if (yacyCore.log.isFine()) yacyCore.log.logFine("transerURL: received too old URL from peer " + otherPeerName + ": " + lEntry.freshdate()); blocked++; continue; } // check if the entry is blacklisted if ((blockBlacklist) && (Switchboard.urlBlacklist.isListed(Blacklist.BLACKLIST_DHT, metadata.url()))) { if (yacyCore.log.isFine()) yacyCore.log.logFine("transferURL: blocked blacklisted URL '" + metadata.url().toNormalform(false, true) + "' from peer " + otherPeerName); lEntry = null; blocked++; continue; } // check if the entry is in our network domain final String urlRejectReason = sb.crawlStacker.urlInAcceptedDomain(metadata.url()); if (urlRejectReason != null) { if (yacyCore.log.isFine()) yacyCore.log.logFine("transferURL: blocked URL '" + metadata.url() + "' (" + urlRejectReason + ") from peer " + otherPeerName); lEntry = null; blocked++; continue; } // write entry to database if (yacyCore.log.isFine()) yacyCore.log.logFine("Accepting URL " + i + "/" + urlc + " from peer " + otherPeerName + ": " + lEntry.metadata().url().toNormalform(true, false)); try { sb.indexSegments.urlMetadata(Segments.Process.DHTIN).store(lEntry); sb.crawlResults.stack(lEntry, iam.getBytes(), iam.getBytes(), EventOrigin.DHT_TRANSFER); if (yacyCore.log.isFine()) yacyCore.log.logFine("transferURL: received URL '" + metadata.url().toNormalform(false, true) + "' from peer " + otherPeerName); received++; } catch (final IOException e) { Log.logException(e); } } sb.peers.mySeed().incRU(received); // return rewrite properties final int more = sb.indexSegments.urlMetadata(Segments.Process.DHTIN).size() - sizeBefore; doublevalues = Integer.toString(received - more); yacyCore.log.logInfo("Received " + received + " URLs from peer " + otherPeerName + " in " + (System.currentTimeMillis() - start) + " ms, blocked " + blocked + " URLs"); yacyChannel.channels(yacyChannel.DHTRECEIVE).addMessage(new RSSMessage("Received " + received + ", blocked " + blocked + " URLs from peer " + otherPeerName, "", otherPeer.hash)); if ((received - more) > 0) yacyCore.log.logSevere("Received " + doublevalues + " double URLs from peer " + otherPeerName); result = "ok"; } prop.put("double", doublevalues); prop.put("result", result); return prop; } }