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196 lines
9.9 KiB
196 lines
9.9 KiB
// hello.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@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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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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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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//
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// You must compile this file with
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// javac -classpath .:../../classes hello.java
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// if the shell's current path is HTROOT
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import java.util.Date;
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import de.anomic.http.httpHeader;
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import de.anomic.server.serverCore;
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import de.anomic.server.serverDate;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.yacy.yacyClient;
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import de.anomic.yacy.yacyCore;
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import de.anomic.yacy.yacySeed;
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import de.anomic.yacy.yacyVersion;
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public final class hello {
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch ss) throws InterruptedException {
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if (post == null || ss == null || yacyCore.seedDB == null || yacyCore.seedDB.mySeed == null) { return null; }
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// return variable that accumulates replacements
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final serverObjects prop = new serverObjects();
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if (prop == null) { return null; }
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// final String iam = (String) post.get("iam", ""); // complete seed of the requesting peer
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// final String pattern = (String) post.get("pattern", ""); //
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// final String mytime = (String) post.get(MYTIME, ""); //
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final String key = post.get("key", ""); // transmission key for response
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final String seed = post.get(yacySeed.SEED, "");
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final String countStr = post.get("count", "0");
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int i;
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int count = 0;
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try {count = (countStr == null) ? 0 : Integer.parseInt(countStr);} catch (NumberFormatException e) {count = 0;}
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// final Date remoteTime = yacyCore.parseUniversalDate((String) post.get(MYTIME)); // read remote time
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final yacySeed remoteSeed = yacySeed.genRemoteSeed(seed, key, false);
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// System.out.println("YACYHELLO: REMOTESEED=" + ((remoteSeed == null) ? "NULL" : remoteSeed.toString()));
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if (remoteSeed == null) { return null; }
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// final String properTest = remoteSeed.isProper();
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// The remote peer might not know its IP yet, so don't abort if the IP check fails
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// if ((properTest != null) && (! properTest.substring(0,1).equals("IP"))) { return null; }
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// we easily know the caller's IP:
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final String clientip = (String) header.get("CLIENTIP", "<unknown>"); // read an artificial header addendum
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final String userAgent = (String) header.get(httpHeader.USER_AGENT, "<unknown>");
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final String reportedip = remoteSeed.get(yacySeed.IP, "");
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final String reportedPeerType = remoteSeed.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_JUNIOR);
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final float clientversion = remoteSeed.getVersion();
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int urls = -1;
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// if the remote client has reported its own IP address and the client supports
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// the port forwarding feature (if client version >= 0.383) then we try to
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// connect to the reported IP address first
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if (reportedip.length() > 0 && !clientip.equals(reportedip) && clientversion >= yacyVersion.YACY_SUPPORTS_PORT_FORWARDING) {
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serverCore.checkInterruption();
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// try first the reportedip, since this may be a connect from a port-forwarding host
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prop.put(yacySeed.YOURIP, reportedip);
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remoteSeed.put(yacySeed.IP, reportedip);
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urls = yacyClient.queryUrlCount(remoteSeed);
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}
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// if the previous attempt (using the reported ip address) was not successful, try the ip where
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// the request came from
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if (urls < 0) {
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boolean isNotLocal = true;
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// we are only allowed to connect to the client IP address if it's not our own address
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if(serverCore.portForwardingEnabled || serverCore.useStaticIP)
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isNotLocal = serverCore.isNotLocal(clientip);
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if(isNotLocal) {
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serverCore.checkInterruption();
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prop.put(yacySeed.YOURIP, clientip);
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remoteSeed.put(yacySeed.IP, clientip);
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urls = yacyClient.queryUrlCount(remoteSeed);
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}
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}
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// System.out.println("YACYHELLO: YOUR IP=" + clientip);
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// assign status
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if (urls >= 0) {
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if (remoteSeed.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_SENIOR) == null) {
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prop.put(yacySeed.YOURTYPE, yacySeed.PEERTYPE_SENIOR);
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remoteSeed.put(yacySeed.PEERTYPE, yacySeed.PEERTYPE_SENIOR);
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} else if (remoteSeed.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_PRINCIPAL).equals(yacySeed.PEERTYPE_PRINCIPAL)) {
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prop.put(yacySeed.YOURTYPE, yacySeed.PEERTYPE_PRINCIPAL);
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} else {
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prop.put(yacySeed.YOURTYPE, yacySeed.PEERTYPE_SENIOR);
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remoteSeed.put(yacySeed.PEERTYPE, yacySeed.PEERTYPE_SENIOR);
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}
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// connect the seed
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yacyCore.peerActions.peerArrival(remoteSeed, true);
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} else {
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prop.put(yacySeed.YOURTYPE, yacySeed.PEERTYPE_JUNIOR);
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remoteSeed.put(yacySeed.LASTSEEN, yacyCore.universalDateShortString(new Date(System.currentTimeMillis() + serverDate.UTCDiff() - remoteSeed.getUTCDiff())) );
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yacyCore.peerActions.juniorConnects++; // update statistics
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remoteSeed.put(yacySeed.PEERTYPE, yacySeed.PEERTYPE_JUNIOR);
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yacyCore.log.logInfo("hello: responded remote junior peer '" + remoteSeed.getName() + "' from " + reportedip);
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// no connection here, instead store junior in connection cache
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if ((remoteSeed.hash != null) && (remoteSeed.isProper() == null)) {
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yacyCore.peerActions.peerPing(remoteSeed);
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}
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}
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yacyCore.peerActions.setUserAgent(clientip, userAgent);
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if (!((String)prop.get(yacySeed.YOURTYPE)).equals(reportedPeerType)) {
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yacyCore.log.logInfo("hello: changing remote peer '" + remoteSeed.getName() +
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"' [" + reportedip +
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"] peerType from '" + reportedPeerType +
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"' to '" + prop.get(yacySeed.YOURTYPE) + "'.");
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}
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serverCore.checkInterruption();
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final StringBuffer seeds = new StringBuffer(768);
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// attach some more seeds, as requested
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if ((yacyCore.seedDB != null) && (yacyCore.seedDB.sizeConnected() > 0)) {
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if (count > yacyCore.seedDB.sizeConnected()) { count = yacyCore.seedDB.sizeConnected(); }
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if (count > 100) { count = 100; }
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// latest seeds
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final yacySeed[] ySeeds = yacyCore.seedDB.seedsByAge(true, count);
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// attach also my own seed
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seeds.append("seed0=").append(yacyCore.seedDB.mySeed.genSeedStr(key)).append(serverCore.crlfString);
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count = 1;
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// attach other seeds
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if (ySeeds != null) {
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seeds.ensureCapacity((ySeeds.length + 1) * 768);
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for (i = 0; i < ySeeds.length; i++) {
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if ((ySeeds[i] != null) && (ySeeds[i].isProper() == null)) {
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seeds.append(yacySeed.SEED).append(count).append(yacySeed.EQUAL).append(ySeeds[i].genSeedStr(key)).append(serverCore.crlfString);
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count++;
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}
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}
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}
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} else {
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// attach also my own seed
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seeds.append("seed0=").append(yacyCore.seedDB.mySeed.genSeedStr(key)).append(serverCore.crlfString);
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}
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prop.put(yacySeed.MYTIME, yacyCore.universalDateShortString(new Date()));
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prop.put("seedlist", seeds.toString());
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// return rewrite properties
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return prop;
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}
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}
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