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193 lines
9.0 KiB
193 lines
9.0 KiB
// transferURL.java
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// -----------------------
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// part of the AnomicHTTPD caching proxy
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004, 2005
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// You must compile this file with
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// javac -classpath .:../classes transferRWI.java
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import java.io.IOException;
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import java.text.ParseException;
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import java.util.HashMap;
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import java.util.Map;
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import net.yacy.cora.date.GenericFormatter;
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import net.yacy.cora.document.encoding.ASCII;
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import net.yacy.cora.document.feed.RSSMessage;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.cora.util.ConcurrentLog;
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import net.yacy.crawler.data.ResultURLs;
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import net.yacy.crawler.data.ResultURLs.EventOrigin;
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import net.yacy.gui.Audio;
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import net.yacy.kelondro.data.meta.URIMetadataNode;
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import net.yacy.peers.EventChannel;
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import net.yacy.peers.Network;
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import net.yacy.peers.Protocol;
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import net.yacy.peers.Seed;
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import net.yacy.repository.Blacklist.BlacklistType;
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import net.yacy.search.Switchboard;
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import net.yacy.search.SwitchboardConstants;
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import net.yacy.server.serverObjects;
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import net.yacy.server.serverSwitch;
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public final class transferURL {
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public static serverObjects respond(@SuppressWarnings("unused") final RequestHeader header, final serverObjects post, final serverSwitch env) {
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final long start = System.currentTimeMillis();
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long freshdate = 0;
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try {freshdate = GenericFormatter.SHORT_DAY_FORMATTER.parse("20061101", 0).getTime().getTime();} catch (final ParseException e1) {}
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// return variable that accumulates replacements
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final Switchboard sb = (Switchboard) env;
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final serverObjects prop = new serverObjects();
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if ((post == null) || (env == null)) return prop;
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if (!Protocol.authentifyRequest(post, env)) return prop;
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// request values
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final String iam = post.get("iam", ""); // seed hash of requester
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final String youare = post.get("youare", ""); // seed hash of the target peer, needed for network stability
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// final String key = post.get("key", ""); // transmission key
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final int urlc = post.getInt("urlc", 0); // number of transported urls
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final boolean granted = sb.getConfigBool(SwitchboardConstants.INDEX_RECEIVE_ALLOW, false);
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final boolean blockBlacklist = sb.getConfigBool(SwitchboardConstants.INDEX_RECEIVE_BLOCK_BLACKLIST, false);
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// response values
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String result = "";
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String doublevalues = "0";
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final Seed otherPeer = sb.peers.get(iam);
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final String otherPeerName = iam + ":" + ((otherPeer == null) ? "NULL" : (otherPeer.getName() + "/" + otherPeer.getVersion()));
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if ((youare == null) || (!youare.equals(sb.peers.mySeed().hash))) {
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Network.log.info("Rejecting URLs from peer " + otherPeerName + ". Wrong target. Wanted peer=" + youare + ", iam=" + sb.peers.mySeed().hash);
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result = "wrong_target";
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} else if ((!granted) || (sb.isRobinsonMode())) {
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Network.log.info("Rejecting URLs from peer " + otherPeerName + ". Not granted.");
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result = "error_not_granted";
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} else {
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int received = 0;
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int blocked = 0;
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int doublecheck = 0;
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// read the urls from the other properties and store
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String urls;
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URIMetadataNode lEntry;
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Map<String, URIMetadataNode> lEm = new HashMap<String, URIMetadataNode>();
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for (int i = 0; i < urlc; i++) {
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// read new lurl-entry
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urls = post.get("url" + i);
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if (urls == null) {
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if (Network.log.isFine()) Network.log.fine("transferURL: got null URL-string from peer " + otherPeerName);
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blocked++;
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continue;
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}
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// parse new lurl-entry
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lEntry = URIMetadataNode.importEntry(urls, "dht");
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if (lEntry == null) {
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if (Network.log.isWarn()) Network.log.warn("transferURL: received invalid URL (entry null) from peer " + otherPeerName + "\n\tURL Property: " + urls);
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blocked++;
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continue;
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}
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// check if entry is well-formed
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if (lEntry.url() == null) {
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if (Network.log.isWarn()) Network.log.warn("transferURL: received invalid URL from peer " + otherPeerName + "\n\tURL Property: " + urls);
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blocked++;
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continue;
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}
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// check whether entry is too old
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if (lEntry.freshdate().getTime() <= freshdate) {
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if (Network.log.isFine()) Network.log.fine("transerURL: received too old URL from peer " + otherPeerName + ": " + lEntry.freshdate());
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blocked++;
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continue;
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}
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// check if the entry is blacklisted
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if ((blockBlacklist) && (Switchboard.urlBlacklist.isListed(BlacklistType.DHT, lEntry.url()))) {
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if (Network.log.isFine()) Network.log.fine("transferURL: blocked blacklisted URL '" + lEntry.url().toNormalform(false) + "' from peer " + otherPeerName);
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lEntry = null;
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blocked++;
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continue;
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}
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// check if the entry is in our network domain
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final String urlRejectReason = sb.crawlStacker.urlInAcceptedDomain(lEntry.url());
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if (urlRejectReason != null) {
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if (Network.log.isFine()) Network.log.fine("transferURL: blocked URL '" + lEntry.url() + "' (" + urlRejectReason + ") from peer " + otherPeerName);
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lEntry = null;
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blocked++;
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continue;
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}
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lEm.put(ASCII.String(lEntry.hash()), lEntry);
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}
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doublecheck = 0;
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for (String id : lEm.keySet()) {
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long lt = -1;
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try {
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lt = sb.index.getLoadTime(id);
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} catch (IOException e1) {
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lt = -1;
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ConcurrentLog.logException(e1);
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}
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if (lt < 0) {
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lEntry = lEm.get(id);
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// write entry to database
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if (Network.log.isFine()) Network.log.fine("Accepting URL from peer " + otherPeerName + ": " + lEntry.url().toNormalform(true));
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try {
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sb.index.fulltext().putMetadata(lEntry);
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ResultURLs.stack(ASCII.String(lEntry.url().hash()), lEntry.url().getHost(), iam.getBytes(), iam.getBytes(), EventOrigin.DHT_TRANSFER);
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if (Network.log.isFine()) Network.log.fine("transferURL: received URL '" + lEntry.url().toNormalform(false) + "' from peer " + otherPeerName);
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received++;
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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}
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} else {
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doublecheck++;
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}
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}
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sb.peers.mySeed().incRU(received);
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// return rewrite properties
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Network.log.info("Received " + received + " URLs from peer " + otherPeerName + " in " + (System.currentTimeMillis() - start) + " ms, blocked " + blocked + " URLs");
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EventChannel.channels(EventChannel.DHTRECEIVE).addMessage(new RSSMessage("Received " + received + ", blocked " + blocked + " URLs from peer " + otherPeerName, "", otherPeer.hash));
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if (sb.getConfigBool(SwitchboardConstants.DECORATION_AUDIO, false)) Audio.Soundclip.dhtin.play(-10.0f);
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if (doublecheck > 0) {
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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
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doublevalues = Integer.toString(doublecheck);
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}
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result = "ok";
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}
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prop.put("double", doublevalues);
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prop.put("result", result);
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return prop;
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}
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}
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