// 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 java.util.HashMap; import java.util.Map; import net.yacy.cora.date.GenericFormatter; import net.yacy.cora.document.encoding.ASCII; import net.yacy.cora.document.feed.RSSMessage; import net.yacy.cora.protocol.RequestHeader; import net.yacy.cora.util.ConcurrentLog; import net.yacy.crawler.data.ResultURLs; import net.yacy.crawler.data.ResultURLs.EventOrigin; import net.yacy.gui.Audio; import net.yacy.kelondro.data.meta.URIMetadataNode; import net.yacy.peers.EventChannel; import net.yacy.peers.Network; import net.yacy.peers.Protocol; import net.yacy.peers.Seed; import net.yacy.repository.Blacklist.BlacklistType; import net.yacy.search.Switchboard; import net.yacy.search.SwitchboardConstants; import net.yacy.server.serverObjects; import net.yacy.server.serverSwitch; public final class transferURL { public static serverObjects respond(@SuppressWarnings("unused") final RequestHeader header, final serverObjects post, final serverSwitch env) { final long start = System.currentTimeMillis(); long freshdate = 0; try {freshdate = GenericFormatter.SHORT_DAY_FORMATTER.parse("20061101", 0).getTime().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 (!Protocol.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.getConfigBool(SwitchboardConstants.INDEX_RECEIVE_ALLOW, false); final boolean blockBlacklist = sb.getConfigBool(SwitchboardConstants.INDEX_RECEIVE_BLOCK_BLACKLIST, false); // response values String result = ""; String doublevalues = "0"; final Seed 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))) { Network.log.info("Rejecting URLs from peer " + otherPeerName + ". Wrong target. Wanted peer=" + youare + ", iam=" + sb.peers.mySeed().hash); result = "wrong_target"; } else if ((!granted) || (sb.isRobinsonMode())) { Network.log.info("Rejecting URLs from peer " + otherPeerName + ". Not granted."); result = "error_not_granted"; } else { int received = 0; int blocked = 0; int doublecheck = 0; // read the urls from the other properties and store String urls; URIMetadataNode lEntry; Map lEm = new HashMap(); for (int i = 0; i < urlc; i++) { // read new lurl-entry urls = post.get("url" + i); if (urls == null) { if (Network.log.isFine()) Network.log.fine("transferURL: got null URL-string from peer " + otherPeerName); blocked++; continue; } // parse new lurl-entry lEntry = URIMetadataNode.importEntry(urls, "dht"); if (lEntry == null) { if (Network.log.isWarn()) Network.log.warn("transferURL: received invalid URL (entry null) from peer " + otherPeerName + "\n\tURL Property: " + urls); blocked++; continue; } // check if entry is well-formed if (lEntry.url() == null) { if (Network.log.isWarn()) Network.log.warn("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 (Network.log.isFine()) Network.log.fine("transerURL: received too old URL from peer " + otherPeerName + ": " + lEntry.freshdate()); blocked++; continue; } // check if the entry is blacklisted if ((blockBlacklist) && (Switchboard.urlBlacklist.isListed(BlacklistType.DHT, lEntry.url()))) { if (Network.log.isFine()) Network.log.fine("transferURL: blocked blacklisted URL '" + lEntry.url().toNormalform(false) + "' from peer " + otherPeerName); lEntry = null; blocked++; continue; } // check if the entry is in our network domain final String urlRejectReason = sb.crawlStacker.urlInAcceptedDomain(lEntry.url()); if (urlRejectReason != null) { if (Network.log.isFine()) Network.log.fine("transferURL: blocked URL '" + lEntry.url() + "' (" + urlRejectReason + ") from peer " + otherPeerName); lEntry = null; blocked++; continue; } lEm.put(ASCII.String(lEntry.hash()), lEntry); } doublecheck = 0; for (String id : lEm.keySet()) { long lt = -1; try { lt = sb.index.getLoadTime(id); } catch (IOException e1) { lt = -1; ConcurrentLog.logException(e1); } if (lt < 0) { lEntry = lEm.get(id); // write entry to database if (Network.log.isFine()) Network.log.fine("Accepting URL from peer " + otherPeerName + ": " + lEntry.url().toNormalform(true)); try { sb.index.fulltext().putMetadata(lEntry); ResultURLs.stack(ASCII.String(lEntry.url().hash()), lEntry.url().getHost(), iam.getBytes(), iam.getBytes(), EventOrigin.DHT_TRANSFER); if (Network.log.isFine()) Network.log.fine("transferURL: received URL '" + lEntry.url().toNormalform(false) + "' from peer " + otherPeerName); received++; } catch (final IOException e) { ConcurrentLog.logException(e); } } else { doublecheck++; } } sb.peers.mySeed().incRU(received); // return rewrite properties Network.log.info("Received " + received + " URLs from peer " + otherPeerName + " in " + (System.currentTimeMillis() - start) + " ms, blocked " + blocked + " URLs"); EventChannel.channels(EventChannel.DHTRECEIVE).addMessage(new RSSMessage("Received " + received + ", blocked " + blocked + " URLs from peer " + otherPeerName, "", otherPeer.hash)); if (sb.getConfigBool(SwitchboardConstants.DECORATION_AUDIO, false)) Audio.Soundclip.dhtin.play(-10.0f); if (doublecheck > 0) { Network.log.warn("Received " + doublecheck + "/" + urlc + " double URLs from peer " + otherPeerName); // double should not happen because we demanded only documents which we do not have yet doublevalues = Integer.toString(doublecheck); } result = "ok"; } prop.put("double", doublevalues); prop.put("result", result); return prop; } }