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;
}
}
public OutboundReceiver(RouterContext ctx, TunnelCreatorConfig cfg) {
_context = ctx;
_log = ctx.logManager().getLog(OutboundReceiver.class);
_config = cfg;
_nextHopCache = _context.netDb().lookupRouterInfoLocally(_config.getPeer(1));
// all createRateStat() in TunnelDispatcher
}
/**
* The next hop
*
* @return non-null
* @since 0.9.3
*/
public Hash getSendTo() {
return _config.getPeer(1);
}
private void runTest() {
I2PAppContext ctx = I2PAppContext.getGlobalContext();
Log log = ctx.logManager().getLog(getClass());
List order = pickOrder(ctx);
TunnelCreatorConfig cfg = createConfig(ctx);
_replyRouter = new Hash();
byte h[] = new byte[Hash.HASH_LENGTH];
Arrays.fill(h, (byte) 0xFF);
_replyRouter.setData(h);
_replyTunnel = 42;
// populate and encrypt the message
BuildMessageGenerator gen = new BuildMessageGenerator();
TunnelBuildMessage msg = new TunnelBuildMessage(ctx);
for (int i = 0; i < BuildMessageGenerator.ORDER.length; i++) {
int hop = ((Integer) order.get(i)).intValue();
PublicKey key = null;
if (hop < _pubKeys.length) key = _pubKeys[hop];
gen.createRecord(i, hop, msg, cfg, _replyRouter, _replyTunnel, ctx, key);
}
gen.layeredEncrypt(ctx, msg, cfg, order);
log.debug(
"\n================================================================"
+ "\nMessage fully encrypted"
+ "\n================================================================");
// now msg is fully encrypted, so lets go through the hops, decrypting and replying
// as necessary
BuildMessageProcessor proc = new BuildMessageProcessor(ctx);
for (int i = 0; i < cfg.getLength(); i++) {
// this not only decrypts the current hop's record, but encrypts the other records
// with the reply key
BuildRequestRecord req = proc.decrypt(ctx, msg, _peers[i], _privKeys[i]);
if (req == null) {
// no records matched the _peers[i], or the decryption failed
throw new RuntimeException("foo @ " + i);
}
long ourId = req.readReceiveTunnelId();
byte replyIV[] = req.readReplyIV();
long nextId = req.readNextTunnelId();
Hash nextPeer = req.readNextIdentity();
boolean isInGW = req.readIsInboundGateway();
boolean isOutEnd = req.readIsOutboundEndpoint();
long time = req.readRequestTime();
long now = (ctx.clock().now() / (60l * 60l * 1000l)) * (60 * 60 * 1000);
int ourSlot = -1;
BuildResponseRecord resp = new BuildResponseRecord();
byte reply[] = resp.create(ctx, 0, req.readReplyKey(), req.readReplyIV(), -1);
for (int j = 0; j < TunnelBuildMessage.RECORD_COUNT; j++) {
if (msg.getRecord(j) == null) {
ourSlot = j;
msg.setRecord(j, new ByteArray(reply));
break;
}
}
log.debug(
"Read slot "
+ ourSlot
+ " containing hop "
+ i
+ " @ "
+ _peers[i].toBase64()
+ " receives on "
+ ourId
+ " w/ replyIV "
+ Base64.encode(replyIV)
+ " sending to "
+ nextId
+ " on "
+ nextPeer.toBase64()
+ " inGW? "
+ isInGW
+ " outEnd? "
+ isOutEnd
+ " time difference "
+ (now - time));
}
log.debug(
"\n================================================================"
+ "\nAll hops traversed and replies gathered"
+ "\n================================================================");
// now all of the replies are populated, toss 'em into a reply message and handle it
TunnelBuildReplyMessage reply = new TunnelBuildReplyMessage(ctx);
for (int i = 0; i < TunnelBuildMessage.RECORD_COUNT; i++) reply.setRecord(i, msg.getRecord(i));
BuildReplyHandler handler = new BuildReplyHandler();
int statuses[] = handler.decrypt(ctx, reply, cfg, order);
if (statuses == null) throw new RuntimeException("bar");
boolean allAgree = true;
for (int i = 0; i < cfg.getLength(); i++) {
Hash peer = cfg.getPeer(i);
int record = ((Integer) order.get(i)).intValue();
if (statuses[record] != 0) allAgree = false;
// else
// penalize peer according to the rejection cause
}
log.debug(
"\n================================================================"
+ "\nAll peers agree? "
+ allAgree
+ "\n================================================================");
}
