Examples with LeaseSet net.i2p.data.LeaseSet used on opensource projects

Example 11 with LeaseSet

use of net.i2p.data.LeaseSet in project i2p.i2p by i2p.

the class OutboundClientMessageOneShotJob method getReplyLeaseSet.

/**
 *  @param force to force including a reply lease set
 *  @return lease set or null if we should not send the lease set
 */
private LeaseSet getReplyLeaseSet(boolean force) {
    LeaseSet newLS = getContext().netDb().lookupLeaseSetLocally(_from.calculateHash());
    if (newLS == null)
        // punt
        return null;
    // If the last leaseSet we sent him is still good, don't bother sending again
    LeaseSet ls = _cache.leaseSetCache.put(_hashPair, newLS);
    if (!force) {
        if (ls != null) {
            if (ls.equals(newLS)) {
                if (_log.shouldLog(Log.INFO))
                    _log.info(getJobId() + ": Found in cache - NOT including reply leaseset for " + _toString);
                return null;
            } else {
                if (_log.shouldLog(Log.INFO))
                    _log.info(getJobId() + ": Expired from cache - reply leaseset for " + _toString);
            }
        }
    }
    if (_log.shouldLog(Log.INFO))
        _log.info(getJobId() + ": Added to cache - reply leaseset for " + _toString);
    return newLS;
}

Example 12 with LeaseSet

use of net.i2p.data.LeaseSet in project i2p.i2p by i2p.

the class HandleDatabaseLookupMessageJob method runJob.

public void runJob() {
    if (_log.shouldLog(Log.DEBUG))
        _log.debug("Handling database lookup message for " + _message.getSearchKey());
    Hash fromKey = _message.getFrom();
    if (_log.shouldLog(Log.DEBUG)) {
        if (_message.getReplyTunnel() != null)
            _log.debug("dbLookup received with replies going to " + fromKey + " (tunnel " + _message.getReplyTunnel() + ")");
    }
    // If we are hidden we should not get queries, log and return
    if (getContext().router().isHidden()) {
        if (_log.shouldLog(Log.WARN)) {
            _log.warn("Uninvited dbLookup received with replies going to " + fromKey + " (tunnel " + _message.getReplyTunnel() + ")");
        }
        return;
    }
    // i2pd bug?
    if (_message.getSearchKey().equals(Hash.FAKE_HASH)) {
        if (_log.shouldWarn())
            _log.warn("Zero lookup", new Exception());
        getContext().statManager().addRateData("netDb.DLMAllZeros", 1);
        return;
    }
    DatabaseLookupMessage.Type lookupType = _message.getSearchType();
    // only lookup once, then cast to correct type
    DatabaseEntry dbe = getContext().netDb().lookupLocally(_message.getSearchKey());
    if (dbe != null && dbe.getType() == DatabaseEntry.KEY_TYPE_LEASESET && (lookupType == DatabaseLookupMessage.Type.ANY || lookupType == DatabaseLookupMessage.Type.LS)) {
        LeaseSet ls = (LeaseSet) dbe;
        // We have to be very careful here to decide whether or not to send out the leaseSet,
        // to avoid anonymity vulnerabilities.
        // As this is complex, lots of comments follow...
        boolean isLocal = getContext().clientManager().isLocal(ls.getDestination());
        boolean shouldPublishLocal = isLocal && getContext().clientManager().shouldPublishLeaseSet(_message.getSearchKey());
        // true for received in a DatabaseStoreMessage unsolicited
        if (ls.getReceivedAsPublished()) {
            // Local leasesets are not handled here
            if (_log.shouldLog(Log.INFO))
                _log.info("We have the published LS " + _message.getSearchKey() + ", answering query");
            getContext().statManager().addRateData("netDb.lookupsMatchedReceivedPublished", 1);
            sendData(_message.getSearchKey(), ls, fromKey, _message.getReplyTunnel());
        } else if (shouldPublishLocal && answerAllQueries()) {
            // We are floodfill, and this is our local leaseset, and we publish it.
            // Only send it out if it is in our estimated keyspace.
            // For this, we do NOT use their dontInclude list as it can't be trusted
            // (i.e. it could mess up the closeness calculation)
            Set<Hash> closestHashes = getContext().netDb().findNearestRouters(_message.getSearchKey(), CLOSENESS_THRESHOLD, null);
            if (weAreClosest(closestHashes)) {
                // It's in our keyspace, so give it to them
                if (_log.shouldLog(Log.INFO))
                    _log.info("We have local LS " + _message.getSearchKey() + ", answering query, in our keyspace");
                getContext().statManager().addRateData("netDb.lookupsMatchedLocalClosest", 1);
                sendData(_message.getSearchKey(), ls, fromKey, _message.getReplyTunnel());
            } else {
                // Lie, pretend we don't have it
                if (_log.shouldLog(Log.INFO))
                    _log.info("We have local LS " + _message.getSearchKey() + ", NOT answering query, out of our keyspace");
                getContext().statManager().addRateData("netDb.lookupsMatchedLocalNotClosest", 1);
                Set<Hash> routerHashSet = getNearestRouters(lookupType);
                sendClosest(_message.getSearchKey(), routerHashSet, fromKey, _message.getReplyTunnel());
            }
        } else {
            // Lie, pretend we don't have it
            if (_log.shouldLog(Log.INFO))
                _log.info("We have LS " + _message.getSearchKey() + ", NOT answering query - local? " + isLocal + " shouldPublish? " + shouldPublishLocal + " RAP? " + ls.getReceivedAsPublished() + " RAR? " + ls.getReceivedAsReply());
            getContext().statManager().addRateData("netDb.lookupsMatchedRemoteNotClosest", 1);
            Set<Hash> routerHashSet = getNearestRouters(lookupType);
            sendClosest(_message.getSearchKey(), routerHashSet, fromKey, _message.getReplyTunnel());
        }
    } else if (dbe != null && dbe.getType() == DatabaseEntry.KEY_TYPE_ROUTERINFO && lookupType != DatabaseLookupMessage.Type.LS) {
        RouterInfo info = (RouterInfo) dbe;
        if (info.isCurrent(EXPIRE_DELAY)) {
            if ((info.isHidden()) || (isUnreachable(info) && !publishUnreachable())) {
                if (_log.shouldLog(Log.DEBUG))
                    _log.debug("Not answering a query for a netDb peer who isn't reachable");
                Set<Hash> us = Collections.singleton(getContext().routerHash());
                sendClosest(_message.getSearchKey(), us, fromKey, _message.getReplyTunnel());
            } else {
                // send that routerInfo to the _message.getFromHash peer
                if (_log.shouldLog(Log.DEBUG))
                    _log.debug("We do have key " + _message.getSearchKey() + " locally as a router info.  sending to " + fromKey);
                sendData(_message.getSearchKey(), info, fromKey, _message.getReplyTunnel());
            }
        } else {
            // expired locally - return closest peer hashes
            Set<Hash> routerHashSet = getNearestRouters(lookupType);
            if (_log.shouldLog(Log.DEBUG))
                _log.debug("Expired " + _message.getSearchKey() + " locally.  sending back " + routerHashSet.size() + " peers to " + fromKey);
            sendClosest(_message.getSearchKey(), routerHashSet, fromKey, _message.getReplyTunnel());
        }
    } else {
        // not found locally - return closest peer hashes
        Set<Hash> routerHashSet = getNearestRouters(lookupType);
        if (_log.shouldLog(Log.DEBUG))
            _log.debug("We do not have key " + _message.getSearchKey() + " locally.  sending back " + routerHashSet.size() + " peers to " + fromKey);
        sendClosest(_message.getSearchKey(), routerHashSet, fromKey, _message.getReplyTunnel());
    }
}

Example 13 with LeaseSet

use of net.i2p.data.LeaseSet in project i2p.i2p by i2p.

the class FloodOnlyLookupMatchJob method setMessage.

public void setMessage(I2NPMessage message) {
    if (message instanceof DatabaseSearchReplyMessage) {
        // DSRM processing now in FloodOnlyLookupSelector instead of here,
        // a dsrm is only passed in when there are no more lookups remaining
        // so that all DSRM's are processed, not just the last one.
        _search.failed();
        return;
    }
    try {
        DatabaseStoreMessage dsm = (DatabaseStoreMessage) message;
        if (_log.shouldLog(Log.INFO))
            _log.info(_search.getJobId() + ": got a DSM for " + dsm.getKey().toBase64());
        // Should we just pass the DataStructure directly back to somebody?
        if (dsm.getEntry().getType() == DatabaseEntry.KEY_TYPE_LEASESET) {
            // Since HFDSMJ wants to setReceivedAsPublished(), we have to
            // set a flag saying this was really the result of a query,
            // so don't do that.
            LeaseSet ls = (LeaseSet) dsm.getEntry();
            ls.setReceivedAsReply();
            getContext().netDb().store(dsm.getKey(), ls);
        } else {
            getContext().netDb().store(dsm.getKey(), (RouterInfo) dsm.getEntry());
        }
    } catch (UnsupportedCryptoException uce) {
        _search.failed();
        return;
    } catch (IllegalArgumentException iae) {
        if (_log.shouldLog(Log.WARN))
            _log.warn(_search.getJobId() + ": Received an invalid store reply", iae);
    }
}

Example 14 with LeaseSet

use of net.i2p.data.LeaseSet in project i2p.i2p by i2p.

the class KademliaNetworkDatabaseFacade method lookupLeaseSetLocally.

/**
 *  Use lookupDestination() if you don't need the LS or don't need it validated.
 */
public LeaseSet lookupLeaseSetLocally(Hash key) {
    if (!_initialized)
        return null;
    DatabaseEntry ds = _ds.get(key);
    if (ds != null) {
        if (ds.getType() == DatabaseEntry.KEY_TYPE_LEASESET) {
            LeaseSet ls = (LeaseSet) ds;
            if (ls.isCurrent(Router.CLOCK_FUDGE_FACTOR)) {
                return ls;
            } else {
                fail(key);
                // this was an interesting key, so either refetch it or simply explore with it
                _exploreKeys.add(key);
                return null;
            }
        } else {
            // _log.debug("Looking for a lease set [" + key + "] but it ISN'T a leaseSet! " + ds, new Exception("Who thought that router was a lease?"));
            return null;
        }
    } else {
        return null;
    }
}

Example 15 with LeaseSet

use of net.i2p.data.LeaseSet in project i2p.i2p by i2p.

the class KademliaNetworkDatabaseFacade method store.

/**
 * Store the leaseSet.
 *
 * If the store fails due to unsupported crypto, it will negative cache
 * the hash until restart.
 *
 * @throws IllegalArgumentException if the leaseSet is not valid
 * @throws UnsupportedCryptoException if that's why it failed.
 * @return previous entry or null
 */
public LeaseSet store(Hash key, LeaseSet leaseSet) throws IllegalArgumentException {
    if (!_initialized)
        return null;
    LeaseSet rv = null;
    try {
        rv = (LeaseSet) _ds.get(key);
        if ((rv != null) && (rv.equals(leaseSet))) {
            // if it hasn't changed, no need to do anything
            return rv;
        }
    } catch (ClassCastException cce) {
        throw new IllegalArgumentException("Attempt to replace RI with " + leaseSet);
    }
    // todo allow non-exp to overwrite exp
    if (rv != null && !leaseSet.getDestination().equals(rv.getDestination()))
        throw new IllegalArgumentException("LS Hash collision");
    String err = validate(key, leaseSet);
    if (err != null)
        throw new IllegalArgumentException("Invalid store attempt - " + err);
    _ds.put(key, leaseSet);
    return rv;
}