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

Example 6 with Payload

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

the class InboundMessageDistributor method handleClove.

/**
 * Handle a clove removed from the garlic message
 */
public void handleClove(DeliveryInstructions instructions, I2NPMessage data) {
    int type = data.getType();
    switch(instructions.getDeliveryMode()) {
        case DeliveryInstructions.DELIVERY_MODE_LOCAL:
            if (_log.shouldLog(Log.DEBUG))
                _log.debug("local delivery instructions for clove: " + data.getClass().getSimpleName());
            if (type == GarlicMessage.MESSAGE_TYPE) {
                _receiver.receive((GarlicMessage) data);
            } else if (type == DatabaseStoreMessage.MESSAGE_TYPE) {
                // Treat db store explicitly here (not in HandleFloodfillDatabaseStoreMessageJob),
                // since we don't want to republish (or flood)
                // unnecessarily. Reply tokens ignored.
                DatabaseStoreMessage dsm = (DatabaseStoreMessage) data;
                // Ensure the reply info is cleared, just in case
                dsm.setReplyToken(0);
                dsm.setReplyTunnel(null);
                dsm.setReplyGateway(null);
                if (dsm.getEntry().getType() == DatabaseEntry.KEY_TYPE_LEASESET) {
                    // Case 1:
                    // store of our own LS.
                    // This is almost certainly a response to a FloodfillVerifyStoreJob search.
                    // We must send to the InNetMessagePool so the message can be matched
                    // and the verify marked as successful.
                    // Case 2:
                    // Store of somebody else's LS.
                    // This could be an encrypted response to an IterativeSearchJob search.
                    // We must send to the InNetMessagePool so the message can be matched
                    // and the search marked as successful.
                    // Or, it's a normal LS bundled with data and a MessageStatusMessage.
                    // ... and inject it.
                    ((LeaseSet) dsm.getEntry()).setReceivedAsReply();
                    if (_log.shouldLog(Log.INFO))
                        _log.info("Storing garlic LS down tunnel for: " + dsm.getKey() + " sent to: " + _client);
                    _context.inNetMessagePool().add(dsm, null, null);
                } else {
                    if (_client != null) {
                        // drop it, since the data we receive shouldn't include router
                        // references, as that might get us to talk to them (and therefore
                        // open an attack vector)
                        _context.statManager().addRateData("tunnel.dropDangerousClientTunnelMessage", 1, DatabaseStoreMessage.MESSAGE_TYPE);
                        _log.error("Dropped dangerous message down a tunnel for " + _client + ": " + dsm, new Exception("cause"));
                        return;
                    }
                    // ... and inject it.
                    if (_log.shouldLog(Log.INFO))
                        _log.info("Storing garlic RI down tunnel for: " + dsm.getKey() + " sent to: " + _client);
                    _context.inNetMessagePool().add(dsm, null, null);
                }
            } else if (_client != null && type == DatabaseSearchReplyMessage.MESSAGE_TYPE) {
                // DSRMs show up here now that replies are encrypted
                // TODO: Strip in IterativeLookupJob etc. instead, depending on
                // LS or RI and client or expl., so that we can safely follow references
                // in a reply to a LS lookup over client tunnels.
                // ILJ would also have to follow references via client tunnels
                DatabaseSearchReplyMessage orig = (DatabaseSearchReplyMessage) data;
                /**
                 **
                 *                    if (orig.getNumReplies() > 0) {
                 *                        if (_log.shouldLog(Log.INFO))
                 *                            _log.info("Removing replies from a garlic DSRM down a tunnel for " + _client + ": " + data);
                 *                        DatabaseSearchReplyMessage newMsg = new DatabaseSearchReplyMessage(_context);
                 *                        newMsg.setFromHash(orig.getFromHash());
                 *                        newMsg.setSearchKey(orig.getSearchKey());
                 *                        orig = newMsg;
                 *                     }
                 ***
                 */
                _context.inNetMessagePool().add(orig, null, null);
            } else if (type == DataMessage.MESSAGE_TYPE) {
                // a data message targetting the local router is how we send load tests (real
                // data messages target destinations)
                _context.statManager().addRateData("tunnel.handleLoadClove", 1);
                data = null;
            // _context.inNetMessagePool().add(data, null, null);
            } else if (_client != null && type != DeliveryStatusMessage.MESSAGE_TYPE) {
                // drop it, since the data we receive shouldn't include other stuff,
                // as that might open an attack vector
                _context.statManager().addRateData("tunnel.dropDangerousClientTunnelMessage", 1, data.getType());
                _log.error("Dropped dangerous message down a tunnel for " + _client + ": " + data, new Exception("cause"));
            } else {
                _context.inNetMessagePool().add(data, null, null);
            }
            return;
        case DeliveryInstructions.DELIVERY_MODE_DESTINATION:
            Hash to = instructions.getDestination();
            // Can we route UnknownI2NPMessages to a destination too?
            if (type != DataMessage.MESSAGE_TYPE) {
                if (_log.shouldLog(Log.ERROR))
                    _log.error("cant send a " + data.getClass().getSimpleName() + " to a destination");
            } else if (_client != null && _client.equals(to)) {
                if (_log.shouldLog(Log.DEBUG))
                    _log.debug("data message came down a tunnel for " + _client);
                DataMessage dm = (DataMessage) data;
                Payload payload = new Payload();
                payload.setEncryptedData(dm.getData());
                ClientMessage m = new ClientMessage(_client, payload);
                _context.clientManager().messageReceived(m);
            } else if (_client != null) {
                // Shared tunnel?
                TunnelPoolSettings tgt = _context.tunnelManager().getInboundSettings(to);
                if (tgt != null && _client.equals(tgt.getAliasOf())) {
                    // same as above, just different log
                    if (_log.shouldLog(Log.DEBUG))
                        _log.debug("data message came down a tunnel for " + _client + " targeting shared " + to);
                    DataMessage dm = (DataMessage) data;
                    Payload payload = new Payload();
                    payload.setEncryptedData(dm.getData());
                    ClientMessage m = new ClientMessage(to, payload);
                    _context.clientManager().messageReceived(m);
                } else {
                    if (_log.shouldLog(Log.ERROR))
                        _log.error("Data message came down a tunnel for " + _client + " but targetted " + to);
                }
            } else {
                if (_log.shouldLog(Log.ERROR))
                    _log.error("Data message came down an exploratory tunnel targeting " + to);
            }
            return;
        // fall through
        case DeliveryInstructions.DELIVERY_MODE_ROUTER:
        case DeliveryInstructions.DELIVERY_MODE_TUNNEL:
            if (_log.shouldLog(Log.INFO))
                _log.info("clove targetted " + instructions.getRouter() + ":" + instructions.getTunnelId() + ", treat recursively to prevent leakage");
            distribute(data, instructions.getRouter(), instructions.getTunnelId());
            return;
        default:
            if (_log.shouldLog(Log.ERROR))
                _log.error("Unknown instruction " + instructions.getDeliveryMode() + ": " + instructions);
            return;
    }
}

Example 7 with Payload

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

the class SendMessageMessage method readMessage.

/**
 * Read the body into the data structures
 *
 * @throws IOException
 */
@Override
public void readMessage(InputStream in, int length, int type) throws I2CPMessageException, IOException {
    if (type != getType())
        throw new I2CPMessageException("Invalid message type (found: " + type + " supported: " + getType() + " class: " + getClass().getName() + ")");
    if (length < 0)
        throw new IOException("Negative payload size");
    try {
        _sessionId = new SessionId();
        _sessionId.readBytes(in);
        _destination = Destination.create(in);
        _payload = new Payload();
        _payload.readBytes(in);
        _nonce = DataHelper.readLong(in, 4);
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("Unable to load the message data", dfe);
    }
}

Example 8 with Payload

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

the class I2CPMessageProducer method sendMessage.

/**
 * Package up and send the payload to the router for delivery
 *
 * @param nonce 0 to 0xffffffff; if 0, the router will not reply with a MessageStatusMessage
 * @since 0.8.4
 */
public void sendMessage(I2PSessionImpl session, Destination dest, long nonce, byte[] payload, long expires, int flags) throws I2PSessionException {
    if (!updateBps(payload.length, expires))
        // drop the message... send fail notification?
        return;
    SendMessageMessage msg;
    if (expires > 0 || flags > 0) {
        SendMessageExpiresMessage smsg = new SendMessageExpiresMessage();
        smsg.setExpiration(expires);
        smsg.setFlags(flags);
        msg = smsg;
    } else
        msg = new SendMessageMessage();
    msg.setDestination(dest);
    SessionId sid = session.getSessionId();
    if (sid == null) {
        _log.error(session.toString() + " send message w/o session", new Exception());
        return;
    }
    msg.setSessionId(sid);
    msg.setNonce(nonce);
    Payload data = createPayload(dest, payload, null, null, null, null);
    msg.setPayload(data);
    session.sendMessage(msg);
}

Example 9 with Payload

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

the class MessagePayloadMessageHandler method decryptPayload.

/**
 * Decrypt the payload
 *
 * We don't really decrypt (no more end-to-end crypto)
 * If we do, we need to use the correct key manager in the decrypt() call below
 */
private Payload decryptPayload(MessagePayloadMessage msg, I2PSessionImpl session) throws DataFormatException {
    Payload payload = msg.getPayload();
    // if (!I2CPMessageProducer.END_TO_END_CRYPTO) {
    payload.setUnencryptedData(payload.getEncryptedData());
    return payload;
// }
// byte[] data = _context.elGamalAESEngine().decrypt(payload.getEncryptedData(), session.getDecryptionKey());
// if (data == null) {
// if (_log.shouldLog(Log.WARN))
// _log.warn("Error decrypting the payload");
// throw new DataFormatException("Unable to decrypt the payload");
// }
// payload.setUnencryptedData(data);
// return payload;
}

Example 10 with Payload

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

the class OutboundClientMessageOneShotJob method buildClove.

/**
 *  Build the payload clove that will be used for all of the messages,
 *  placing the clove in the status structure.
 *
 *  @return null on failure
 */
private PayloadGarlicConfig buildClove() {
    PayloadGarlicConfig clove = new PayloadGarlicConfig();
    DeliveryInstructions instructions = new DeliveryInstructions();
    instructions.setDeliveryMode(DeliveryInstructions.DELIVERY_MODE_DESTINATION);
    instructions.setDestination(_to.calculateHash());
    // defaults
    // instructions.setDelayRequested(false);
    // instructions.setDelaySeconds(0);
    // instructions.setEncrypted(false);
    clove.setCertificate(Certificate.NULL_CERT);
    clove.setDeliveryInstructions(instructions);
    clove.setExpiration(OVERALL_TIMEOUT_MS_DEFAULT + getContext().clock().now());
    clove.setId(getContext().random().nextLong(I2NPMessage.MAX_ID_VALUE));
    DataMessage msg = new DataMessage(getContext());
    Payload p = _clientMessage.getPayload();
    if (p == null)
        return null;
    byte[] d = p.getEncryptedData();
    if (d == null)
        return null;
    msg.setData(d);
    msg.setMessageExpiration(clove.getExpiration());
    clove.setPayload(msg);
    // _log.debug(getJobId() + ": Built payload clove with id " + clove.getId());
    return clove;
}