Examples with MessageStreamDecoder com.biglybt.core.peermanager.messaging.MessageStreamDecoder used on opensource projects

Example 1 with MessageStreamDecoder

use of com.biglybt.core.peermanager.messaging.MessageStreamDecoder in project BiglyBT by BiglySoftware.

the class MessageManagerImpl method registerGenericMessageType.

@Override
public GenericMessageRegistration registerGenericMessageType(final String _type, final String description, final int stream_crypto, final GenericMessageHandler handler) throws MessageException {
    final String type = "AEGEN:" + _type;
    final byte[] type_bytes = type.getBytes();
    final byte[][] shared_secrets = new byte[][] { new SHA1Simple().calculateHash(type_bytes) };
    synchronized (message_handlers) {
        message_handlers.put(type, handler);
    }
    final NetworkManager.ByteMatcher matcher = new NetworkManager.ByteMatcher() {

        @Override
        public int matchThisSizeOrBigger() {
            return (maxSize());
        }

        @Override
        public int maxSize() {
            return type_bytes.length;
        }

        @Override
        public int minSize() {
            return maxSize();
        }

        @Override
        public Object matches(TransportHelper transport, ByteBuffer to_compare, int port) {
            int old_limit = to_compare.limit();
            to_compare.limit(to_compare.position() + maxSize());
            boolean matches = to_compare.equals(ByteBuffer.wrap(type_bytes));
            // restore buffer structure
            to_compare.limit(old_limit);
            return matches ? "" : null;
        }

        @Override
        public Object minMatches(TransportHelper transport, ByteBuffer to_compare, int port) {
            return (matches(transport, to_compare, port));
        }

        @Override
        public byte[][] getSharedSecrets() {
            return (shared_secrets);
        }

        @Override
        public int getSpecificPort() {
            return (-1);
        }
    };
    NetworkManager.getSingleton().requestIncomingConnectionRouting(matcher, new NetworkManager.RoutingListener() {

        @Override
        public void connectionRouted(final NetworkConnection connection, Object routing_data) {
            try {
                ByteBuffer[] skip_buffer = { ByteBuffer.allocate(type_bytes.length) };
                connection.getTransport().read(skip_buffer, 0, 1);
                if (skip_buffer[0].remaining() != 0) {
                    Debug.out("incomplete read");
                }
                GenericMessageEndpointImpl endpoint = new GenericMessageEndpointImpl(connection.getEndpoint());
                GenericMessageConnectionDirect direct_connection = GenericMessageConnectionDirect.receive(endpoint, type, description, stream_crypto, shared_secrets);
                GenericMessageConnectionImpl new_connection = new GenericMessageConnectionImpl(MessageManagerImpl.this, direct_connection);
                direct_connection.connect(connection);
                if (handler.accept(new_connection)) {
                    new_connection.accepted();
                } else {
                    connection.close("connection not accepted");
                }
            } catch (Throwable e) {
                Debug.printStackTrace(e);
                connection.close(e == null ? null : Debug.getNestedExceptionMessage(e));
            }
        }

        @Override
        public boolean autoCryptoFallback() {
            return (stream_crypto != MessageManager.STREAM_ENCRYPTION_RC4_REQUIRED);
        }
    }, new MessageStreamFactory() {

        @Override
        public MessageStreamEncoder createEncoder() {
            return new GenericMessageEncoder();
        }

        @Override
        public MessageStreamDecoder createDecoder() {
            return new GenericMessageDecoder(type, description);
        }
    });
    return (new GenericMessageRegistration() {

        @Override
        public GenericMessageEndpoint createEndpoint(InetSocketAddress notional_target) {
            return (new GenericMessageEndpointImpl(notional_target));
        }

        @Override
        public GenericMessageConnection createConnection(GenericMessageEndpoint endpoint) throws MessageException {
            return (new GenericMessageConnectionImpl(MessageManagerImpl.this, type, description, (GenericMessageEndpointImpl) endpoint, stream_crypto, shared_secrets));
        }

        @Override
        public void cancel() {
            NetworkManager.getSingleton().cancelIncomingConnectionRouting(matcher);
            synchronized (message_handlers) {
                message_handlers.remove(type);
            }
        }
    });
}

Example 2 with MessageStreamDecoder

use of com.biglybt.core.peermanager.messaging.MessageStreamDecoder in project BiglyBT by BiglySoftware.

the class PeerManager method init.

protected void init() {
    // ensure it gets initialized
    MessageManager.getSingleton().initialize();
    NetworkManager.ByteMatcher matcher = new NetworkManager.ByteMatcher() {

        @Override
        public int matchThisSizeOrBigger() {
            return (48);
        }

        @Override
        public int maxSize() {
            return 48;
        }

        @Override
        public int minSize() {
            return 20;
        }

        @Override
        public Object matches(TransportHelper transport, ByteBuffer to_compare, int port) {
            InetSocketAddress address = transport.getAddress();
            int old_limit = to_compare.limit();
            int old_position = to_compare.position();
            to_compare.limit(old_position + 20);
            PeerManagerRegistrationImpl routing_data = null;
            if (to_compare.equals(legacy_handshake_header)) {
                // compare header
                to_compare.limit(old_position + 48);
                to_compare.position(old_position + 28);
                byte[] hash = new byte[to_compare.remaining()];
                to_compare.get(hash);
                try {
                    managers_mon.enter();
                    List<PeerManagerRegistrationImpl> registrations = registered_legacy_managers.get(new HashWrapper(hash));
                    if (registrations != null) {
                        routing_data = registrations.get(0);
                    }
                } finally {
                    managers_mon.exit();
                }
            }
            // restore buffer structure
            to_compare.limit(old_limit);
            to_compare.position(old_position);
            if (routing_data != null) {
                if (!routing_data.isActive()) {
                    if (routing_data.isKnownSeed(address)) {
                        String reason = "Activation request from " + address + " denied as known seed";
                        if (Logger.isEnabled()) {
                            Logger.log(new LogEvent(LOGID, reason));
                        }
                        transport.close(reason);
                        routing_data = null;
                    } else {
                        if (!routing_data.getAdapter().activateRequest(address)) {
                            String reason = "Activation request from " + address + " denied by rules";
                            if (Logger.isEnabled()) {
                                Logger.log(new LogEvent(LOGID, reason));
                            }
                            transport.close(reason);
                            routing_data = null;
                        }
                    }
                }
            }
            return routing_data;
        }

        @Override
        public Object minMatches(TransportHelper transport, ByteBuffer to_compare, int port) {
            boolean matches = false;
            int old_limit = to_compare.limit();
            int old_position = to_compare.position();
            to_compare.limit(old_position + 20);
            if (to_compare.equals(legacy_handshake_header)) {
                matches = true;
            }
            // restore buffer structure
            to_compare.limit(old_limit);
            to_compare.position(old_position);
            return matches ? "" : null;
        }

        @Override
        public byte[][] getSharedSecrets() {
            // registered manually above
            return (null);
        }

        @Override
        public int getSpecificPort() {
            return (-1);
        }
    };
    // register for incoming connection routing
    NetworkManager.getSingleton().requestIncomingConnectionRouting(matcher, new NetworkManager.RoutingListener() {

        @Override
        public void connectionRouted(NetworkConnection connection, Object routing_data) {
            PeerManagerRegistrationImpl registration = (PeerManagerRegistrationImpl) routing_data;
            registration.route(connection, null);
        }

        @Override
        public boolean autoCryptoFallback() {
            return (false);
        }
    }, new MessageStreamFactory() {

        @Override
        public MessageStreamEncoder createEncoder() {
            return new BTMessageEncoder();
        }

        @Override
        public MessageStreamDecoder createDecoder() {
            return new BTMessageDecoder();
        }
    });
}