Examples with ServerCertificateValidator org.eclipse.milo.opcua.stack.server.security.ServerCertificateValidator used on opensource projects

Example 1 with ServerCertificateValidator

use of org.eclipse.milo.opcua.stack.server.security.ServerCertificateValidator 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));
}