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Example 1 with CreateSessionResponse

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

the class SessionFsmFactory method createSession.

@SuppressWarnings("Duplicates")
private static CompletableFuture<CreateSessionResponse> createSession(FsmContext<State, Event> ctx, OpcUaClient client) {
    UaStackClient stackClient = client.getStackClient();
    EndpointDescription endpoint = stackClient.getConfig().getEndpoint();
    String gatewayServerUri = endpoint.getServer().getGatewayServerUri();
    String serverUri;
    if (gatewayServerUri != null && !gatewayServerUri.isEmpty()) {
        serverUri = endpoint.getServer().getApplicationUri();
    } else {
        serverUri = null;
    }
    ByteString clientNonce = NonceUtil.generateNonce(32);
    ByteString clientCertificate = stackClient.getConfig().getCertificate().map(c -> {
        try {
            return ByteString.of(c.getEncoded());
        } catch (CertificateEncodingException e) {
            return ByteString.NULL_VALUE;
        }
    }).orElse(ByteString.NULL_VALUE);
    ApplicationDescription clientDescription = new ApplicationDescription(client.getConfig().getApplicationUri(), client.getConfig().getProductUri(), client.getConfig().getApplicationName(), ApplicationType.Client, null, null, null);
    CreateSessionRequest request = new CreateSessionRequest(client.newRequestHeader(), clientDescription, serverUri, client.getConfig().getEndpoint().getEndpointUrl(), client.getConfig().getSessionName().get(), clientNonce, clientCertificate, client.getConfig().getSessionTimeout().doubleValue(), client.getConfig().getMaxResponseMessageSize());
    LOGGER.debug("[{}] Sending CreateSessionRequest...", ctx.getInstanceId());
    return stackClient.sendRequest(request).thenApply(CreateSessionResponse.class::cast).thenCompose(response -> {
        try {
            SecurityPolicy securityPolicy = SecurityPolicy.fromUri(endpoint.getSecurityPolicyUri());
            if (securityPolicy != SecurityPolicy.None) {
                if (response.getServerCertificate().isNullOrEmpty()) {
                    throw new UaException(StatusCodes.Bad_SecurityChecksFailed, "Certificate missing from CreateSessionResponse");
                }
                List<X509Certificate> serverCertificateChain = CertificateUtil.decodeCertificates(response.getServerCertificate().bytesOrEmpty());
                X509Certificate serverCertificate = serverCertificateChain.get(0);
                X509Certificate certificateFromEndpoint = CertificateUtil.decodeCertificate(endpoint.getServerCertificate().bytesOrEmpty());
                if (!serverCertificate.equals(certificateFromEndpoint)) {
                    throw new UaException(StatusCodes.Bad_SecurityChecksFailed, "Certificate from CreateSessionResponse did not " + "match certificate from EndpointDescription!");
                }
                client.getConfig().getCertificateValidator().validateCertificateChain(serverCertificateChain, endpoint.getServer().getApplicationUri(), EndpointUtil.getHost(endpoint.getEndpointUrl()));
                SignatureData serverSignature = response.getServerSignature();
                byte[] dataBytes = Bytes.concat(clientCertificate.bytesOrEmpty(), clientNonce.bytesOrEmpty());
                byte[] signatureBytes = serverSignature.getSignature().bytesOrEmpty();
                SignatureUtil.verify(SecurityAlgorithm.fromUri(serverSignature.getAlgorithm()), serverCertificate, dataBytes, signatureBytes);
            }
            return completedFuture(response);
        } catch (UaException e) {
            return failedFuture(e);
        }
    });
}
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Example 2 with CreateSessionResponse

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

the class SessionManager method createSession.

private CreateSessionResponse createSession(ServiceRequest serviceRequest) throws UaException {
    CreateSessionRequest request = (CreateSessionRequest) serviceRequest.getRequest();
    long maxSessionCount = server.getConfig().getLimits().getMaxSessionCount().longValue();
    if (createdSessions.size() + activeSessions.size() >= maxSessionCount) {
        throw new UaException(StatusCodes.Bad_TooManySessions);
    }
    ByteString serverNonce = NonceUtil.generateNonce(32);
    NodeId authenticationToken = new NodeId(0, NonceUtil.generateNonce(32));
    long maxRequestMessageSize = serviceRequest.getServer().getConfig().getEncodingLimits().getMaxMessageSize();
    double revisedSessionTimeout = Math.max(5000, Math.min(server.getConfig().getLimits().getMaxSessionTimeout(), request.getRequestedSessionTimeout()));
    ApplicationDescription clientDescription = request.getClientDescription();
    long secureChannelId = serviceRequest.getSecureChannelId();
    EndpointDescription endpoint = serviceRequest.getEndpoint();
    SecurityPolicy securityPolicy = SecurityPolicy.fromUri(endpoint.getSecurityPolicyUri());
    EndpointDescription[] serverEndpoints = server.getEndpointDescriptions().stream().filter(ed -> !ed.getEndpointUrl().endsWith("/discovery")).filter(ed -> endpointMatchesUrl(ed, request.getEndpointUrl())).filter(ed -> Objects.equal(endpoint.getTransportProfileUri(), ed.getTransportProfileUri())).map(SessionManager::stripNonEssentialFields).toArray(EndpointDescription[]::new);
    if (serverEndpoints.length == 0) {
        // GetEndpoints in UaStackServer returns *all* endpoints regardless of a hostname
        // match in the endpoint URL if the result after filtering is 0 endpoints. Do the
        // same here.
        serverEndpoints = server.getEndpointDescriptions().stream().filter(ed -> !ed.getEndpointUrl().endsWith("/discovery")).filter(ed -> Objects.equal(endpoint.getTransportProfileUri(), ed.getTransportProfileUri())).map(SessionManager::stripNonEssentialFields).toArray(EndpointDescription[]::new);
    }
    ByteString clientNonce = request.getClientNonce();
    if (securityPolicy != SecurityPolicy.None) {
        NonceUtil.validateNonce(clientNonce);
        if (clientNonces.contains(clientNonce)) {
            throw new UaException(StatusCodes.Bad_NonceInvalid);
        }
    }
    if (securityPolicy != SecurityPolicy.None && clientNonce.isNotNull()) {
        clientNonces.add(clientNonce);
        while (clientNonces.size() > 64) {
            clientNonces.remove(0);
        }
    }
    ByteString clientCertificateBytes = request.getClientCertificate();
    if (securityPolicy != SecurityPolicy.None && serviceRequest.getClientCertificateBytes() != null) {
        if (!Objects.equal(clientCertificateBytes, serviceRequest.getClientCertificateBytes())) {
            throw new UaException(StatusCodes.Bad_SecurityChecksFailed, "certificate used to open secure channel " + "differs from certificate used to create session");
        }
    }
    SecurityConfiguration securityConfiguration = createSecurityConfiguration(endpoint, clientCertificateBytes);
    if (securityPolicy != SecurityPolicy.None) {
        X509Certificate clientCertificate = securityConfiguration.getClientCertificate();
        List<X509Certificate> clientCertificateChain = securityConfiguration.getClientCertificateChain();
        if (clientCertificate == null || clientCertificateChain == null) {
            throw new UaException(StatusCodes.Bad_SecurityChecksFailed, "client certificate must be non-null");
        }
        ServerCertificateValidator certificateValidator = server.getConfig().getCertificateValidator();
        certificateValidator.validateCertificateChain(clientCertificateChain, clientDescription.getApplicationUri());
    }
    // SignatureData must be created using only the bytes of the client
    // leaf certificate, not the bytes of the client certificate chain.
    SignatureData serverSignature = getServerSignature(securityPolicy, securityConfiguration.getKeyPair(), clientNonce, securityConfiguration.getClientCertificateBytes());
    NodeId sessionId = new NodeId(1, "Session:" + UUID.randomUUID());
    String sessionName = request.getSessionName();
    Duration sessionTimeout = Duration.ofMillis(DoubleMath.roundToLong(revisedSessionTimeout, RoundingMode.UP));
    Session session = new Session(server, sessionId, sessionName, sessionTimeout, clientDescription, request.getServerUri(), request.getMaxResponseMessageSize(), endpoint, secureChannelId, securityConfiguration);
    session.setLastNonce(serverNonce);
    session.addLifecycleListener((s, remove) -> {
        createdSessions.remove(authenticationToken);
        activeSessions.remove(authenticationToken);
        sessionListeners.forEach(l -> l.onSessionClosed(s));
    });
    createdSessions.put(authenticationToken, session);
    sessionListeners.forEach(l -> l.onSessionCreated(session));
    return new CreateSessionResponse(serviceRequest.createResponseHeader(), sessionId, authenticationToken, revisedSessionTimeout, serverNonce, endpoint.getServerCertificate(), serverEndpoints, new SignedSoftwareCertificate[0], serverSignature, uint(maxRequestMessageSize));
}
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Example 3 with CreateSessionResponse

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

the class SessionManager method onCreateSession.

// region Session Services
@Override
public void onCreateSession(ServiceRequest serviceRequest) {
    ServerDiagnosticsSummary serverDiagnosticsSummary = server.getDiagnosticsSummary();
    try {
        CreateSessionResponse response = createSession(serviceRequest);
        serverDiagnosticsSummary.getCumulatedSessionCount().increment();
        serviceRequest.setResponse(response);
    } catch (UaException e) {
        serverDiagnosticsSummary.getRejectedSessionCount().increment();
        if (e.getStatusCode().isSecurityError()) {
            serverDiagnosticsSummary.getSecurityRejectedSessionCount().increment();
        }
        serviceRequest.setServiceFault(e);
    }
}
Also used : CreateSessionResponse(org.eclipse.milo.opcua.stack.core.types.structured.CreateSessionResponse) UaException(org.eclipse.milo.opcua.stack.core.UaException) ServerDiagnosticsSummary(org.eclipse.milo.opcua.sdk.server.diagnostics.ServerDiagnosticsSummary)

Aggregations

UaException (org.eclipse.milo.opcua.stack.core.UaException)3 CreateSessionResponse (org.eclipse.milo.opcua.stack.core.types.structured.CreateSessionResponse)3 Bytes (com.google.common.primitives.Bytes)2 ByteBuffer (java.nio.ByteBuffer)2 KeyPair (java.security.KeyPair)2 X509Certificate (java.security.cert.X509Certificate)2 Arrays (java.util.Arrays)2 List (java.util.List)2 StatusCodes (org.eclipse.milo.opcua.stack.core.StatusCodes)2 SecurityAlgorithm (org.eclipse.milo.opcua.stack.core.security.SecurityAlgorithm)2 SecurityPolicy (org.eclipse.milo.opcua.stack.core.security.SecurityPolicy)2 ByteString (org.eclipse.milo.opcua.stack.core.types.builtin.ByteString)2 ExtensionObject (org.eclipse.milo.opcua.stack.core.types.builtin.ExtensionObject)2 StatusCode (org.eclipse.milo.opcua.stack.core.types.builtin.StatusCode)2 UInteger (org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.UInteger)2 Unsigned.uint (org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.Unsigned.uint)2 ApplicationType (org.eclipse.milo.opcua.stack.core.types.enumerated.ApplicationType)2 ActivateSessionRequest (org.eclipse.milo.opcua.stack.core.types.structured.ActivateSessionRequest)2 ActivateSessionResponse (org.eclipse.milo.opcua.stack.core.types.structured.ActivateSessionResponse)2 ApplicationDescription (org.eclipse.milo.opcua.stack.core.types.structured.ApplicationDescription)2