Examples with OpenSecureChannelRequest org.eclipse.milo.opcua.stack.core.types.structured.OpenSecureChannelRequest used on opensource projects

Example 1 with OpenSecureChannelRequest

use of org.eclipse.milo.opcua.stack.core.types.structured.OpenSecureChannelRequest in project milo by eclipse.

the class UascServerAsymmetricHandler method onOpenSecureChannel.

private void onOpenSecureChannel(ChannelHandlerContext ctx, ByteBuf buffer) throws UaException {
    // Skip messageType
    buffer.skipBytes(3);
    char chunkType = (char) buffer.readByte();
    if (chunkType == 'A') {
        chunkBuffers.forEach(ByteBuf::release);
        chunkBuffers.clear();
        headerRef.set(null);
    } else {
        // Skip messageSize
        buffer.skipBytes(4);
        final long secureChannelId = buffer.readUnsignedIntLE();
        final AsymmetricSecurityHeader header = AsymmetricSecurityHeader.decode(buffer, stackServer.getConfig().getEncodingLimits());
        if (!headerRef.compareAndSet(null, header)) {
            if (!header.equals(headerRef.get())) {
                throw new UaException(StatusCodes.Bad_SecurityChecksFailed, "subsequent AsymmetricSecurityHeader did not match");
            }
        }
        if (secureChannelId != 0) {
            if (secureChannel == null) {
                throw new UaException(StatusCodes.Bad_TcpSecureChannelUnknown, "unknown secure channel id: " + secureChannelId);
            }
            if (secureChannelId != secureChannel.getChannelId()) {
                throw new UaException(StatusCodes.Bad_TcpSecureChannelUnknown, "unknown secure channel id: " + secureChannelId);
            }
        }
        if (secureChannel == null) {
            secureChannel = new ServerSecureChannel();
            secureChannel.setChannelId(stackServer.getNextChannelId());
            String securityPolicyUri = header.getSecurityPolicyUri();
            SecurityPolicy securityPolicy = SecurityPolicy.fromUri(securityPolicyUri);
            secureChannel.setSecurityPolicy(securityPolicy);
            if (securityPolicy != SecurityPolicy.None) {
                secureChannel.setRemoteCertificate(header.getSenderCertificate().bytesOrEmpty());
                CertificateValidator certificateValidator = stackServer.getConfig().getCertificateValidator();
                certificateValidator.validateCertificateChain(secureChannel.getRemoteCertificateChain());
                CertificateManager certificateManager = stackServer.getConfig().getCertificateManager();
                Optional<X509Certificate[]> localCertificateChain = certificateManager.getCertificateChain(header.getReceiverThumbprint());
                Optional<KeyPair> keyPair = certificateManager.getKeyPair(header.getReceiverThumbprint());
                if (localCertificateChain.isPresent() && keyPair.isPresent()) {
                    X509Certificate[] chain = localCertificateChain.get();
                    secureChannel.setLocalCertificate(chain[0]);
                    secureChannel.setLocalCertificateChain(chain);
                    secureChannel.setKeyPair(keyPair.get());
                } else {
                    throw new UaException(StatusCodes.Bad_SecurityChecksFailed, "no certificate for provided thumbprint");
                }
            }
        }
        int chunkSize = buffer.readerIndex(0).readableBytes();
        if (chunkSize > maxChunkSize) {
            throw new UaException(StatusCodes.Bad_TcpMessageTooLarge, String.format("max chunk size exceeded (%s)", maxChunkSize));
        }
        chunkBuffers.add(buffer.retain());
        if (maxChunkCount > 0 && chunkBuffers.size() > maxChunkCount) {
            throw new UaException(StatusCodes.Bad_TcpMessageTooLarge, String.format("max chunk count exceeded (%s)", maxChunkCount));
        }
        if (chunkType == 'F') {
            final List<ByteBuf> buffersToDecode = chunkBuffers;
            chunkBuffers = new ArrayList<>();
            headerRef.set(null);
            serializationQueue.decode((binaryDecoder, chunkDecoder) -> {
                ByteBuf message;
                long requestId;
                try {
                    ChunkDecoder.DecodedMessage decodedMessage = chunkDecoder.decodeAsymmetric(secureChannel, buffersToDecode);
                    message = decodedMessage.getMessage();
                    requestId = decodedMessage.getRequestId();
                } catch (MessageAbortException e) {
                    logger.warn("Received message abort chunk; error={}, reason={}", e.getStatusCode(), e.getMessage());
                    return;
                } catch (MessageDecodeException e) {
                    logger.error("Error decoding asymmetric message", e);
                    ctx.close();
                    return;
                }
                try {
                    OpenSecureChannelRequest request = (OpenSecureChannelRequest) binaryDecoder.setBuffer(message).readMessage(null);
                    logger.debug("Received OpenSecureChannelRequest ({}, id={}).", request.getRequestType(), secureChannelId);
                    sendOpenSecureChannelResponse(ctx, requestId, request);
                } catch (Throwable t) {
                    logger.error("Error decoding OpenSecureChannelRequest", t);
                    ctx.close();
                } finally {
                    message.release();
                    buffersToDecode.clear();
                }
            });
        }
    }
}

Example 2 with OpenSecureChannelRequest

use of org.eclipse.milo.opcua.stack.core.types.structured.OpenSecureChannelRequest in project milo by eclipse.

the class UascServerAsymmetricHandler method openSecureChannel.

private OpenSecureChannelResponse openSecureChannel(ChannelHandlerContext ctx, OpenSecureChannelRequest request) throws UaException {
    SecurityTokenRequestType requestType = request.getRequestType();
    if (requestType == SecurityTokenRequestType.Issue) {
        secureChannel.setMessageSecurityMode(request.getSecurityMode());
        String endpointUrl = ctx.channel().attr(UascServerHelloHandler.ENDPOINT_URL_KEY).get();
        EndpointDescription endpoint = stackServer.getEndpointDescriptions().stream().filter(e -> {
            boolean transportMatch = Objects.equals(e.getTransportProfileUri(), transportProfile.getUri());
            boolean pathMatch = Objects.equals(EndpointUtil.getPath(e.getEndpointUrl()), EndpointUtil.getPath(endpointUrl));
            boolean securityPolicyMatch = Objects.equals(e.getSecurityPolicyUri(), secureChannel.getSecurityPolicy().getUri());
            boolean securityModeMatch = Objects.equals(e.getSecurityMode(), request.getSecurityMode());
            return transportMatch && pathMatch && securityPolicyMatch && securityModeMatch;
        }).findFirst().orElseThrow(() -> {
            String message = String.format("no matching endpoint found: transportProfile=%s, " + "endpointUrl=%s, securityPolicy=%s, securityMode=%s", transportProfile, endpointUrl, secureChannel.getSecurityPolicy(), request.getSecurityMode());
            return new UaException(StatusCodes.Bad_SecurityChecksFailed, message);
        });
        ctx.channel().attr(ENDPOINT_KEY).set(endpoint);
    }
    if (requestType == SecurityTokenRequestType.Renew && secureChannel.getMessageSecurityMode() != request.getSecurityMode()) {
        throw new UaException(StatusCodes.Bad_SecurityChecksFailed, "secure channel renewal requested a different MessageSecurityMode.");
    }
    long channelLifetime = request.getRequestedLifetime().longValue();
    channelLifetime = Math.min(channelLifetime, stackServer.getConfig().getMaximumSecureChannelLifetime().longValue());
    channelLifetime = Math.max(channelLifetime, stackServer.getConfig().getMinimumSecureChannelLifetime().longValue());
    ChannelSecurityToken newToken = new ChannelSecurityToken(uint(secureChannel.getChannelId()), uint(stackServer.getNextTokenId()), DateTime.now(), uint(channelLifetime));
    SecurityKeys newKeys = null;
    if (secureChannel.isSymmetricSigningEnabled()) {
        // Validate the remote nonce; it must be non-null and the correct length for the security algorithm.
        ByteString remoteNonce = request.getClientNonce();
        NonceUtil.validateNonce(remoteNonce, secureChannel.getSecurityPolicy());
        ByteString localNonce = generateNonce(secureChannel.getSecurityPolicy());
        secureChannel.setLocalNonce(localNonce);
        secureChannel.setRemoteNonce(remoteNonce);
        newKeys = ChannelSecurity.generateKeyPair(secureChannel, secureChannel.getRemoteNonce(), secureChannel.getLocalNonce());
    }
    ChannelSecurity oldSecrets = secureChannel.getChannelSecurity();
    SecurityKeys oldKeys = oldSecrets != null ? oldSecrets.getCurrentKeys() : null;
    ChannelSecurityToken oldToken = oldSecrets != null ? oldSecrets.getCurrentToken() : null;
    ChannelSecurity newSecrets = new ChannelSecurity(newKeys, newToken, oldKeys, oldToken);
    secureChannel.setChannelSecurity(newSecrets);
    /*
         * Cancel the previous timeout, if it exists, and start a new one.
         */
    if (secureChannelTimeout == null || secureChannelTimeout.cancel()) {
        final long lifetime = channelLifetime;
        secureChannelTimeout = Stack.sharedWheelTimer().newTimeout(timeout -> {
            logger.debug("SecureChannel renewal timed out after {}ms. id={}, channel={}", lifetime, secureChannel.getChannelId(), ctx.channel());
            ctx.close();
        }, channelLifetime, TimeUnit.MILLISECONDS);
    }
    ResponseHeader responseHeader = new ResponseHeader(DateTime.now(), request.getRequestHeader().getRequestHandle(), StatusCode.GOOD, null, null, null);
    return new OpenSecureChannelResponse(responseHeader, uint(PROTOCOL_VERSION), newToken, secureChannel.getLocalNonce());
}

Example 3 with OpenSecureChannelRequest

use of org.eclipse.milo.opcua.stack.core.types.structured.OpenSecureChannelRequest in project milo by eclipse.

the class UascClientMessageHandler method sendOpenSecureChannelRequest.

private void sendOpenSecureChannelRequest(ChannelHandlerContext ctx, SecurityTokenRequestType requestType) {
    ByteString clientNonce = secureChannel.isSymmetricSigningEnabled() ? NonceUtil.generateNonce(secureChannel.getSecurityPolicy()) : ByteString.NULL_VALUE;
    secureChannel.setLocalNonce(clientNonce);
    RequestHeader header = new RequestHeader(null, DateTime.now(), uint(0), uint(0), null, config.getRequestTimeout(), null);
    OpenSecureChannelRequest request = new OpenSecureChannelRequest(header, uint(PROTOCOL_VERSION), requestType, secureChannel.getMessageSecurityMode(), secureChannel.getLocalNonce(), config.getChannelLifetime());
    serializationQueue.encode((binaryEncoder, chunkEncoder) -> {
        ByteBuf messageBuffer = BufferUtil.pooledBuffer();
        try {
            binaryEncoder.setBuffer(messageBuffer);
            binaryEncoder.writeMessage(null, request);
            checkMessageSize(messageBuffer);
            EncodedMessage encodedMessage = chunkEncoder.encodeAsymmetric(secureChannel, requestIdSequence.getAndIncrement(), messageBuffer, MessageType.OpenSecureChannel);
            CompositeByteBuf chunkComposite = BufferUtil.compositeBuffer();
            for (ByteBuf chunk : encodedMessage.getMessageChunks()) {
                chunkComposite.addComponent(chunk);
                chunkComposite.writerIndex(chunkComposite.writerIndex() + chunk.readableBytes());
            }
            ctx.writeAndFlush(chunkComposite, ctx.voidPromise());
            ChannelSecurity channelSecurity = secureChannel.getChannelSecurity();
            long currentTokenId = -1L;
            if (channelSecurity != null) {
                currentTokenId = channelSecurity.getCurrentToken().getTokenId().longValue();
            }
            long previousTokenId = -1L;
            if (channelSecurity != null) {
                previousTokenId = channelSecurity.getPreviousToken().map(token -> token.getTokenId().longValue()).orElse(-1L);
            }
            logger.debug("Sent OpenSecureChannelRequest ({}, id={}, currentToken={}, previousToken={}).", request.getRequestType(), secureChannel.getChannelId(), currentTokenId, previousTokenId);
        } catch (MessageEncodeException e) {
            logger.error("Error encoding {}: {}", request, e.getMessage(), e);
            ctx.close();
        } finally {
            messageBuffer.release();
        }
    });
}