public long receiveEncrypted(byte encrypted[]) {
TunnelDataMessage msg = new TunnelDataMessage(_context);
msg.setData(encrypted);
msg.setTunnelId(_config.getConfig(0).getSendTunnel());
if (_log.shouldLog(Log.DEBUG))
_log.debug("received encrypted, sending out " + _config + ": " + msg);
RouterInfo ri = _nextHopCache;
if (ri == null) ri = _context.netDb().lookupRouterInfoLocally(_config.getPeer(1));
if (ri != null) {
_nextHopCache = ri;
send(msg, ri);
return msg.getUniqueId();
} else {
// It should be rare to forget the router info for a peer in our own tunnel.
if (_log.shouldLog(Log.WARN))
_log.warn("lookup of " + _config.getPeer(1) + " required for " + msg);
_context
.netDb()
.lookupRouterInfo(
_config.getPeer(1),
new SendJob(_context, msg),
new FailedJob(_context),
MAX_LOOKUP_TIME);
return -1;
}
}
private TunnelCreatorConfig configOutbound(I2PAppContext ctx) {
_peers = new Hash[4];
_pubKeys = new PublicKey[_peers.length];
_privKeys = new PrivateKey[_peers.length];
for (int i = 0; i < _peers.length; i++) {
byte buf[] = new byte[Hash.HASH_LENGTH];
Arrays.fill(buf, (byte) i); // consistent for repeatability
Hash h = new Hash(buf);
_peers[i] = h;
Object kp[] = ctx.keyGenerator().generatePKIKeypair();
_pubKeys[i] = (PublicKey) kp[0];
_privKeys[i] = (PrivateKey) kp[1];
}
TunnelCreatorConfig cfg = new TunnelCreatorConfig(null, _peers.length, false);
long now = ctx.clock().now();
// peers[] is ordered endpoint first, but cfg.getPeer() is ordered gateway first
for (int i = 0; i < _peers.length; i++) {
cfg.setPeer(i, _peers[i]);
HopConfig hop = cfg.getConfig(i);
hop.setExpiration(now + 10 * 60 * 1000);
hop.setIVKey(ctx.keyGenerator().generateSessionKey());
hop.setLayerKey(ctx.keyGenerator().generateSessionKey());
hop.setReplyKey(ctx.keyGenerator().generateSessionKey());
byte iv[] = new byte[BuildRequestRecord.IV_SIZE];
Arrays.fill(iv, (byte) i); // consistent for repeatability
hop.setReplyIV(new ByteArray(iv));
hop.setReceiveTunnelId(new TunnelId(i + 1));
}
return cfg;
}
