private async void CertificateRequestTimer_Tick(object sender, EventArgs e)
{
try
{
NodeId requestId = NodeId.Parse(m_application.CertificateRequestId);
byte[] privateKeyPFX = null;
byte[][] issuerCertificates = null;
byte[] certificate = m_gds.FinishRequest(
m_application.ApplicationId,
requestId,
out privateKeyPFX,
out issuerCertificates);
if (certificate == null)
{
// request not done yet, try again in a few seconds
return;
}
CertificateRequestTimer.Enabled = false;
RequestProgressLabel.Visible = false;
if (m_application.RegistrationType != RegistrationType.ServerPush)
{
X509Certificate2 newCert = new X509Certificate2(certificate);
if (!String.IsNullOrEmpty(m_application.CertificateStorePath) && !String.IsNullOrEmpty(m_application.CertificateSubjectName))
{
CertificateIdentifier cid = new CertificateIdentifier()
{
StorePath = m_application.CertificateStorePath,
StoreType = CertificateStoreIdentifier.DetermineStoreType(m_application.CertificateStorePath),
SubjectName = m_application.CertificateSubjectName.Replace("localhost", Utils.GetHostName())
};
// update store
using (var store = CertificateStoreIdentifier.OpenStore(m_application.CertificateStorePath))
{
// if we used a CSR, we already have a private key and therefore didn't request one from the GDS
// in this case, privateKey is null
if (privateKeyPFX == null)
{
X509Certificate2 oldCertificate = await cid.Find(true);
if (oldCertificate != null && oldCertificate.HasPrivateKey)
{
oldCertificate = await cid.LoadPrivateKey(string.Empty);
newCert = CertificateFactory.CreateCertificateWithPrivateKey(newCert, oldCertificate);
await store.Delete(oldCertificate.Thumbprint);
}
else
{
throw new ServiceResultException("Failed to merge signed certificate with the private key.");
}
}
else
{
newCert = new X509Certificate2(privateKeyPFX, string.Empty, X509KeyStorageFlags.Exportable);
newCert = CertificateFactory.Load(newCert, true);
}
await store.Add(newCert);
}
}
else
{
DialogResult result = DialogResult.Yes;
string absoluteCertificatePublicKeyPath = Utils.GetAbsoluteFilePath(m_application.CertificatePublicKeyPath, true, false, false) ?? m_application.CertificatePublicKeyPath;
FileInfo file = new FileInfo(absoluteCertificatePublicKeyPath);
if (file.Exists)
{
result = MessageBox.Show(
Parent,
"Replace certificate " +
absoluteCertificatePublicKeyPath +
"?",
Parent.Text,
MessageBoxButtons.YesNo,
MessageBoxIcon.Exclamation);
}
if (result == DialogResult.Yes)
{
byte[] exportedCert;
if (string.Compare(file.Extension, ".PEM", true) == 0)
{
exportedCert = CertificateFactory.ExportCertificateAsPEM(newCert);
}
else
{
exportedCert = newCert.Export(X509ContentType.Cert);
}
File.WriteAllBytes(absoluteCertificatePublicKeyPath, exportedCert);
}
// if we provided a PFX or P12 with the private key, we need to merge the new cert with the private key
if (m_application.GetPrivateKeyFormat(m_server?.GetSupportedKeyFormats()) == "PFX")
{
string absoluteCertificatePrivateKeyPath = Utils.GetAbsoluteFilePath(m_application.CertificatePrivateKeyPath, true, false, false) ?? m_application.CertificatePrivateKeyPath;
file = new FileInfo(absoluteCertificatePrivateKeyPath);
if (file.Exists)
{
result = MessageBox.Show(
Parent,
"Replace private key " +
absoluteCertificatePrivateKeyPath +
"?",
Parent.Text,
MessageBoxButtons.YesNo,
MessageBoxIcon.Exclamation);
}
if (result == DialogResult.Yes)
{
if (file.Exists)
{
byte[] pkcsData = File.ReadAllBytes(absoluteCertificatePrivateKeyPath);
X509Certificate2 oldCertificate = CertificateFactory.CreateCertificateFromPKCS12(pkcsData, m_certificatePassword);
newCert = CertificateFactory.CreateCertificateWithPrivateKey(newCert, oldCertificate);
pkcsData = newCert.Export(X509ContentType.Pfx, m_certificatePassword);
File.WriteAllBytes(absoluteCertificatePrivateKeyPath, pkcsData);
if (privateKeyPFX != null)
{
throw new ServiceResultException("Did not expect a private key for this operation.");
}
}
else
{
File.WriteAllBytes(absoluteCertificatePrivateKeyPath, privateKeyPFX);
}
}
}
}
// update trust list.
if (!String.IsNullOrEmpty(m_application.TrustListStorePath))
{
using (ICertificateStore store = CertificateStoreIdentifier.OpenStore(m_application.TrustListStorePath))
{
foreach (byte[] issuerCertificate in issuerCertificates)
{
X509Certificate2 x509 = new X509Certificate2(issuerCertificate);
X509Certificate2Collection certs = await store.FindByThumbprint(x509.Thumbprint);
if (certs.Count == 0)
{
await store.Add(new X509Certificate2(issuerCertificate));
}
}
}
}
m_certificate = newCert;
}
else
{
if (privateKeyPFX != null && privateKeyPFX.Length > 0)
{
var x509 = new X509Certificate2(privateKeyPFX, m_certificatePassword, X509KeyStorageFlags.Exportable);
privateKeyPFX = x509.Export(X509ContentType.Pfx);
}
bool applyChanges = m_server.UpdateCertificate(
null,
m_server.ApplicationCertificateType,
certificate,
(privateKeyPFX != null) ? "PFX" : null,
privateKeyPFX,
issuerCertificates);
if (applyChanges)
{
MessageBox.Show(
Parent,
"The certificate was updated, however, the apply changes command must be sent before the server will use the new certificate.",
Parent.Text,
MessageBoxButtons.OK,
MessageBoxIcon.Information);
ApplyChangesButton.Enabled = true;
}
}
CertificateControl.ShowValue(null, "Application Certificate", new CertificateWrapper()
{
Certificate = m_certificate
}, true);
}
catch (Exception exception)
{
if (exception is ServiceResultException sre && sre.StatusCode == StatusCodes.BadNothingToDo)
{
return;
}
RequestProgressLabel.Visible = false;
CertificateRequestTimer.Enabled = false;
Opc.Ua.Client.Controls.ExceptionDlg.Show(Text, exception);
}
}
public async Task Initialize(
GlobalDiscoveryClientConfiguration configuration,
GlobalDiscoveryServerClient gds,
ServerPushConfigurationClient server,
RegisteredApplication application,
bool isHttps)
{
m_configuration = configuration;
m_gds = gds;
m_server = server;
m_application = application;
m_certificate = null;
m_certificatePassword = null;
CertificateRequestTimer.Enabled = false;
RequestProgressLabel.Visible = false;
ApplyChangesButton.Enabled = false;
CertificateControl.ShowNothing();
X509Certificate2 certificate = null;
if (!isHttps)
{
if (server.Endpoint != null && server.Endpoint.Description.ServerCertificate != null)
{
certificate = new X509Certificate2(server.Endpoint.Description.ServerCertificate);
}
else if (application != null)
{
if (!String.IsNullOrEmpty(application.CertificatePublicKeyPath))
{
string file = Utils.GetAbsoluteFilePath(application.CertificatePublicKeyPath, true, false, false);
if (file != null)
{
certificate = new X509Certificate2(file);
}
}
else if (!String.IsNullOrEmpty(application.CertificateStorePath))
{
CertificateIdentifier id = new CertificateIdentifier
{
StorePath = application.CertificateStorePath
};
id.StoreType = CertificateStoreIdentifier.DetermineStoreType(id.StorePath);
id.SubjectName = application.CertificateSubjectName.Replace("localhost", Utils.GetHostName());
certificate = await id.Find(true);
}
}
}
else
{
if (application != null)
{
if (!String.IsNullOrEmpty(application.HttpsCertificatePublicKeyPath))
{
string file = Utils.GetAbsoluteFilePath(application.HttpsCertificatePublicKeyPath, true, false, false);
if (file != null)
{
certificate = new X509Certificate2(file);
}
}
else
{
foreach (string disoveryUrl in application.DiscoveryUrl)
{
if (Uri.IsWellFormedUriString(disoveryUrl, UriKind.Absolute))
{
Uri url = new Uri(disoveryUrl);
CertificateIdentifier id = new CertificateIdentifier()
{
StoreType = CertificateStoreType.X509Store,
StorePath = "CurrentUser\\UA_MachineDefault",
SubjectName = "CN=" + url.DnsSafeHost
};
certificate = await id.Find();
}
}
}
}
}
if (certificate != null)
{
try
{
CertificateControl.Tag = certificate.Thumbprint;
}
catch (Exception)
{
MessageBox.Show(
Parent,
"The certificate does not appear to be valid. Please check configuration settings.",
Parent.Text,
MessageBoxButtons.OK,
MessageBoxIcon.Error);
certificate = null;
}
}
WarningLabel.Visible = certificate == null;
if (certificate != null)
{
m_certificate = certificate;
CertificateControl.ShowValue(null, "Application Certificate", new CertificateWrapper()
{
Certificate = certificate
}, true);
}
}
private async void CertificateRequestTimer_Tick(object sender, EventArgs e)
{
try
{
NodeId requestId = NodeId.Parse(m_application.CertificateRequestId);
byte[] privateKey = null;
byte[][] issuerCertificates = null;
byte[] certificate = m_gds.FinishRequest(
m_application.ApplicationId,
requestId,
out privateKey,
out issuerCertificates);
if (certificate == null)
{
return;
}
CertificateRequestTimer.Enabled = false;
RequestProgressLabel.Visible = false;
if (m_application.RegistrationType != RegistrationType.ServerPush)
{
// save public key.
if (!String.IsNullOrEmpty(m_application.CertificatePublicKeyPath))
{
string file = Utils.GetAbsoluteFilePath(m_application.CertificatePublicKeyPath, true, false, true);
File.WriteAllBytes(file, certificate);
}
// check if the private was re-used.
if (privateKey == null || privateKey.Length == 0)
{
if (!String.IsNullOrEmpty(m_application.CertificatePrivateKeyPath))
{
string path = Utils.GetAbsoluteFilePath(m_application.CertificatePrivateKeyPath, true, true, true);
if (path != null)
{
if (!m_application.CertificatePrivateKeyPath.EndsWith("PEM", StringComparison.OrdinalIgnoreCase))
{
var x509 = new X509Certificate2(certificate);
var oldPfx = new X509Certificate2(path, (string)null, X509KeyStorageFlags.Exportable);
var newPfx = CertificateAuthority.Replace(x509, oldPfx);
var bytes = newPfx.Export(X509ContentType.Pfx);
File.WriteAllBytes(path, bytes);
}
}
}
else
{
if (!String.IsNullOrEmpty(m_application.CertificateStorePath) && !String.IsNullOrEmpty(m_application.CertificateSubjectName))
{
var x509 = new X509Certificate2(certificate);
var cid = new CertificateIdentifier()
{
StorePath = m_application.CertificateStorePath,
SubjectName = m_application.CertificateSubjectName.Replace("localhost", System.Net.Dns.GetHostName())
};
var oldPfx = await cid.Find(true);
if (oldPfx != null)
{
var newPfx = CertificateAuthority.Replace(x509, oldPfx);
using (var store = CertificateStoreIdentifier.OpenStore(m_application.CertificateStorePath))
{
await store.Delete(oldPfx.Thumbprint);
await store.Add(newPfx);
}
}
}
}
}
// save private key.
else
{
if (!String.IsNullOrEmpty(m_application.CertificatePrivateKeyPath))
{
string path = Utils.GetAbsoluteFilePath(m_application.CertificatePrivateKeyPath, true, true, true);
if (path != null)
{
File.WriteAllBytes(path, privateKey);
}
}
else
{
if (!String.IsNullOrEmpty(m_application.CertificateStorePath) && !String.IsNullOrEmpty(m_application.CertificateSubjectName))
{
var cid = new CertificateIdentifier()
{
StorePath = m_application.CertificateStorePath,
SubjectName = m_application.CertificateSubjectName
};
var oldCertificate = await cid.Find();
using (var store = CertificateStoreIdentifier.OpenStore(m_application.CertificateStorePath))
{
if (oldCertificate != null)
{
await store.Delete(oldCertificate.Thumbprint);
}
var x509 = new X509Certificate2(privateKey, new System.Security.SecureString(), X509KeyStorageFlags.Exportable);
x509 = CertificateFactory.Load(x509, true);
await store.Add(x509);
}
}
}
}
// update trust list.
if (!String.IsNullOrEmpty(m_application.TrustListStorePath))
{
using (ICertificateStore store = CertificateStoreIdentifier.OpenStore(m_application.TrustListStorePath))
{
foreach (var issuerCertificate in issuerCertificates)
{
var x509 = new X509Certificate2(issuerCertificate);
if (store.FindByThumbprint(x509.Thumbprint) == null)
{
await store.Add(new X509Certificate2(issuerCertificate));
}
}
}
}
}
else
{
if (privateKey != null && privateKey.Length > 0)
{
var x509 = new X509Certificate2(privateKey, m_certificatePassword, X509KeyStorageFlags.Exportable);
privateKey = x509.Export(X509ContentType.Pfx);
}
bool applyChanges = m_server.UpdateCertificate(null, null, certificate, GetPrivateKeyFormat(), privateKey, issuerCertificates);
if (applyChanges)
{
MessageBox.Show(
Parent,
"The certificate was updated, however, the apply changes command must be sent before the server will use the new certificate.",
Parent.Text,
MessageBoxButtons.OK,
MessageBoxIcon.Information);
ApplyChangesButton.Enabled = true;
}
}
m_certificate = new X509Certificate2(certificate);
CertificateControl.ShowValue(null, "Application Certificate", new CertificateWrapper()
{
Certificate = m_certificate
}, true);
}
catch (Exception exception)
{
var sre = exception as ServiceResultException;
if (sre != null && sre.StatusCode == StatusCodes.BadNothingToDo)
{
return;
}
MessageBox.Show(Parent.Text + ": " + exception.Message);
CertificateRequestTimer.Enabled = false;
}
}
