// hello.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 // // $LastChangedDate$ // $LastChangedRevision$ // $LastChangedBy$ // // 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 hello.java // if the shell's current path is HTROOT import java.io.IOException; import java.net.InetAddress; import java.util.Iterator; import java.util.concurrent.ConcurrentMap; import net.yacy.cora.protocol.Domains; import net.yacy.cora.protocol.HeaderFramework; import net.yacy.cora.protocol.RequestHeader; import net.yacy.peers.Network; import net.yacy.peers.DHTSelection; import net.yacy.peers.Protocol; import net.yacy.peers.Seed; import net.yacy.peers.graphics.ProfilingGraph; import net.yacy.peers.operation.yacyVersion; import net.yacy.search.EventTracker; import net.yacy.search.Switchboard; import net.yacy.server.serverCore; import net.yacy.server.serverObjects; import net.yacy.server.serverSwitch; public final class hello { // example: // http://localhost:8090/yacy/hello.html?count=1&seed=p|{Hash=sCJ6Tq8T0N9x,IPType=∅,Port=8090,IP=,Uptime=8,rI=190,Version=0.10004882,PeerType=junior,UTC=+0200,RCount=0,sI=0,LastSeen=20080605103333,Name=intratest,CCount=5.0,SCount=40,news=,USpeed=0,CRTCnt=0,CRWCnt=0,BDate=20080605081349,rU=190,LCount=187,dct=1212668923654,ICount=2,sU=0,ISpeed=0,RSpeed=0.0,NCount=0,Flags=oooo} // http://localhost:8090/yacy/hello.html?count=10&seed=z|H4sIAAAAAAAAADWQW2vDMAyF_81eJork3GyGX-YxGigly2WFvZTQijbQJsHx1pWx_z7nMj1J4ug7B_2s6-GsP5q3G-G6vBz2e0iz8t6zfuBr7-5PUNanQfulhqyzTkuUCFXvmitrBJtq4ed3tkPTtRpXhIiRDAmq0uhHFIiQMduJ-NXYU9NCbrrP1vnjIdUqgk09uIK51V6rMBRIilAo2NajwzfhGcx8QUKsEIp5iCJo-eaTVUXPfPQ4k5dm4pp8NzaESsLzS-14QVNIMlA-ka2m1JuZJJWIBRwPo0GIIiYp4zCSkC5GQSLiJIah0p6X_rvlS-MTbWdhkCSBIni9jA_rfP3-Ae1Oye9dAQAA public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) throws InterruptedException { final Switchboard sb = (Switchboard) env; final serverObjects prop = new serverObjects(); final long start = System.currentTimeMillis(); prop.put("message", "none"); if ((post == null) || (env == null)) { prop.put("message", "no post or no enviroment"); return prop; } if (!Protocol.authentifyRequest(post, env)) { prop.put("message", "not in my network"); return prop; } // final String iam = (String) post.get("iam", ""); // complete seed of the requesting peer // final String mytime = (String) post.get(MYTIME, ""); // final String key = post.get("key", ""); // transmission key for response final String seed = post.get("seed", ""); int count = post.getInt("count", 0); final long magic = post.getLong("magic", 0); // final Date remoteTime = yacyCore.parseUniversalDate(post.get(MYTIME)); // read remote time final String clientip = header.get(HeaderFramework.CONNECTION_PROP_CLIENTIP, ""); // read an artificial header addendum long time = System.currentTimeMillis(); final InetAddress ias = Domains.dnsResolve(clientip); final long time_dnsResolve = System.currentTimeMillis() - time; if (ias == null) { Network.log.info("hello/server: failed contacting seed; clientip not resolvable (clientip=" + clientip + ", time_dnsResolve=" + time_dnsResolve + ")"); prop.put("message", "cannot resolve your IP from your reported location " + clientip); return prop; } if (seed.length() > Seed.maxsize) { Network.log.info("hello/server: rejected contacting seed; too large (" + seed.length() + " > " + Seed.maxsize + ", time_dnsResolve=" + time_dnsResolve + ")"); prop.put("message", "your seed is too long (" + seed.length() + ")"); return prop; } Seed remoteSeed; try { remoteSeed = Seed.genRemoteSeed(seed, true, ias.getHostAddress()); } catch (final IOException e) { Network.log.info("hello/server: bad seed: " + e.getMessage() + ", time_dnsResolve=" + time_dnsResolve); prop.put("message", "bad seed: " + e.getMessage()); return prop; } if (remoteSeed == null || remoteSeed.hash == null) { Network.log.info("hello/server: bad seed: null, time_dnsResolve=" + time_dnsResolve); prop.put("message", "cannot parse your seed"); return prop; } // final String properTest = remoteSeed.isProper(); // The remote peer might not know its IP yet, so don't abort if the IP check fails // if ((properTest != null) && (! properTest.substring(0,1).equals("IP"))) { return null; } // we easily know the caller's IP: final String userAgent = header.get(HeaderFramework.USER_AGENT, ""); sb.peers.peerActions.setUserAgent(clientip, userAgent); final String reportedip = remoteSeed.getIP(); final String reportedPeerType = remoteSeed.get(Seed.PEERTYPE, Seed.PEERTYPE_JUNIOR); final double clientversion = remoteSeed.getVersion(); if ((reportedip + ':' + remoteSeed.getPort()).equals(sb.peers.mySeed().getPublicAddress())) { // reject a self-ping prop.put("message", "I am I"); return prop; } if (remoteSeed.getName().equals(sb.peers.mySeed().getName())) { // reject a ping with my name prop.put("message", "You are using my name"); return prop; } if (sb.isRobinsonMode() && !sb.isPublicRobinson()) { // if we are a robinson cluster, answer only if this client is known by our network definition prop.put("message", "I am robinson, I do not answer"); return prop; } long[] callback = new long[]{-1, -1}; if (sb.clusterhashes != null) remoteSeed.setAlternativeAddress(sb.clusterhashes.get(remoteSeed.hash.getBytes())); // if the remote client has reported its own IP address and the client supports // the port forwarding feature (if client version >= 0.383) then we try to // connect to the reported IP address first long time_backping = 0; String backping_method = "none"; if (reportedip.length() > 0 && !clientip.equals(reportedip) && clientversion >= yacyVersion.YACY_SUPPORTS_PORT_FORWARDING && magic != 0) { serverCore.checkInterruption(); // try first the reportedip, since this may be a connect from a port-forwarding host prop.put("yourip", reportedip); remoteSeed.setIP(reportedip); time = System.currentTimeMillis(); callback = Protocol.queryRWICount(remoteSeed, "Tq418bNZd6AO"); time_backping = System.currentTimeMillis() - time; backping_method = "reportedip=" + reportedip; } else { prop.put("yourip", ias.getHostAddress()); remoteSeed.setIP(ias.getHostAddress()); } // if the previous attempt (using the reported ip address) was not successful, // then try the ip where the request came from if (callback[0] < 0 || (magic != 0 && magic != callback[1])) { boolean isNotLocal = true; // we are only allowed to connect to the client IP address if it's not our own address if (serverCore.useStaticIP) { isNotLocal = !ias.isSiteLocalAddress(); } if (isNotLocal) { serverCore.checkInterruption(); prop.put("yourip", clientip); remoteSeed.setIP(clientip); time = System.currentTimeMillis(); callback = Protocol.queryRWICount(remoteSeed, "Tq418bNZd6AO"); // hash for "www"; the actual count is irrelevant, we just want to know if this works time_backping = System.currentTimeMillis() - time; backping_method = "clientip=" + clientip; } } // System.out.println("YACYHELLO: YOUR IP=" + clientip); // set lastseen value (we have seen that peer, it contacted us!) remoteSeed.setLastSeenUTC(); // assign status final int connectedBefore = sb.peers.sizeConnected(); if (callback[0] >= 0) { if (remoteSeed.get(Seed.PEERTYPE, Seed.PEERTYPE_SENIOR) == null) { prop.put(Seed.YOURTYPE, Seed.PEERTYPE_SENIOR); remoteSeed.put(Seed.PEERTYPE, Seed.PEERTYPE_SENIOR); } else if (remoteSeed.get(Seed.PEERTYPE, Seed.PEERTYPE_PRINCIPAL).equals(Seed.PEERTYPE_PRINCIPAL)) { prop.put(Seed.YOURTYPE, Seed.PEERTYPE_PRINCIPAL); } else { prop.put(Seed.YOURTYPE, Seed.PEERTYPE_SENIOR); remoteSeed.put(Seed.PEERTYPE, Seed.PEERTYPE_SENIOR); } // connect the seed Network.log.info("hello/server: responded remote senior peer '" + remoteSeed.getName() + "' from " + reportedip + ", time_dnsResolve=" + time_dnsResolve + ", time_backping=" + time_backping + ", method=" + backping_method + ", urls=" + callback[0]); sb.peers.peerActions.peerArrival(remoteSeed, true); } else { prop.put(Seed.YOURTYPE, Seed.PEERTYPE_JUNIOR); remoteSeed.put(Seed.PEERTYPE, Seed.PEERTYPE_JUNIOR); Network.log.info("hello/server: responded remote junior peer '" + remoteSeed.getName() + "' from " + reportedip + ", time_dnsResolve=" + time_dnsResolve + ", time_backping=" + time_backping + ", method=" + backping_method + ", urls=" + callback[0]); // no connection here, instead store junior in connection cache if ((remoteSeed.hash != null) && (remoteSeed.isProper(false) == null)) { sb.peers.peerActions.peerPing(remoteSeed); } } final int connectedAfter = sb.peers.sizeConnected(); // update event tracker EventTracker.update(EventTracker.EClass.PEERPING, new ProfilingGraph.EventPing(remoteSeed.getName(), sb.peers.myName(), false, connectedAfter - connectedBefore), false); if (!(prop.get(Seed.YOURTYPE)).equals(reportedPeerType)) { Network.log.info("hello/server: changing remote peer '" + remoteSeed.getName() + "' [" + reportedip + "] peerType from '" + reportedPeerType + "' to '" + prop.get(Seed.YOURTYPE) + "'."); } serverCore.checkInterruption(); final StringBuilder seeds = new StringBuilder(768); // attach some more seeds, as requested if (sb.peers.sizeConnected() > 0) { if (count > sb.peers.sizeConnected()) { count = sb.peers.sizeConnected(); } if (count > 100) { count = 100; } // latest seeds final ConcurrentMap ySeeds = DHTSelection.seedsByAge(sb.peers, true, count); // peerhash/yacySeed relation // attach also my own seed seeds.append("seed0=").append(sb.peers.mySeed().genSeedStr(key)).append(serverCore.CRLF_STRING); count = 1; // attach other seeds if (ySeeds != null) { seeds.ensureCapacity((ySeeds.size() + 1) * 768); final Iterator si = ySeeds.values().iterator(); Seed s; String seedString; while (si.hasNext()) { s = si.next(); if ((s != null) && (s.isProper(false) == null)) { seedString = s.genSeedStr(key); if (seedString != null) { seeds.append("seed").append(count).append('=').append(seedString).append(serverCore.CRLF_STRING); count++; } } } } } else { // attach also my own seed seeds.append("seed0=").append(sb.peers.mySeed().genSeedStr(key)).append(serverCore.CRLF_STRING); } prop.put("seedlist", seeds.toString()); // return rewrite properties prop.put("message", "ok " + seed.length()); Network.log.info("hello/server: responded remote peer '" + remoteSeed.getName() + "' [" + reportedip + "] in " + (System.currentTimeMillis() - start) + " milliseconds"); return prop; } }