/// <summary>
/// Browses for a certificate to import.
/// </summary>
private void ImportApplicationCertificateBTN_Click(object sender, EventArgs e)
{
try
{
// get application.
ManagedApplication application = ApplicationToManageCTRL.GetSelectedApplication();;
if (application == null)
{
return;
}
// load the configuration.
application.Reload();
// can't set application certificate for non-sdk apps.
if (!application.IsSdkCompatible)
{
return;
}
// set current directory.
if (m_currentDirectory == null)
{
m_currentDirectory = Utils.GetAbsoluteDirectoryPath("%CommonApplicationData%\\OPC Foundation\\CertificateStores\\MachineDefault", false, false);
}
if (m_currentDirectory == null)
{
m_currentDirectory = new FileInfo(Application.ExecutablePath).DirectoryName;
}
// open file dialog.
OpenFileDialog dialog = new OpenFileDialog();
dialog.CheckFileExists = true;
dialog.CheckPathExists = true;
dialog.DefaultExt = ".pfx";
dialog.Filter = "PKCS#12 Files (*.pfx)|*.pfx|All Files (*.*)|*.*";
dialog.Multiselect = false;
dialog.ValidateNames = true;
dialog.Title = "Open Application Certificate File";
dialog.FileName = null;
dialog.InitialDirectory = m_currentDirectory;
dialog.RestoreDirectory = true;
if (dialog.ShowDialog() != DialogResult.OK)
{
return;
}
FileInfo fileInfo = new FileInfo(dialog.FileName);
m_currentDirectory = fileInfo.Directory.FullName;
CertificateStoreIdentifier store = GetDefaultStore(application, true);
// prompt for the store to import into.
store = new CertificateStoreDlg().ShowDialog(store);
if (store == null)
{
return;
}
m_currentStore = store;
string password = String.Empty;
X509Certificate2 certificate = null;
do
{
try
{
// load the certificate.
certificate = new X509Certificate2(
fileInfo.FullName,
password,
X509KeyStorageFlags.Exportable | X509KeyStorageFlags.MachineKeySet);
if (!certificate.HasPrivateKey)
{
MessageBox.Show("Certificate does not have a private key.", "Import Certificate", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// import certificate.
ICertificateStore physicalStore = store.OpenStore();
physicalStore.Add(certificate);
physicalStore.Close();
break;
}
catch (System.Security.Cryptography.CryptographicException exception)
{
// prompt for password.
password = new PasswordDlg().ShowDialog(password, exception.Message);
if (password == null)
{
return;
}
}
}
while (true);
UpdateApplicationCertificate(application.Application, store, certificate);
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void ExportPrivateKeyBTN_Click(object sender, EventArgs e)
{
try
{
const string caption = "Select Certificate to Export";
CertificateStoreIdentifier store = new CertificateStoreIdentifier();
store.StoreType = ManagedStoreCTRL.StoreType;
store.StorePath = ManagedStoreCTRL.StorePath;
CertificateIdentifier id = new CertificateListDlg().ShowDialog(store, true);
if (id == null)
{
return;
}
X509Certificate2 certificate = id.Find(false);
if (certificate == null)
{
MessageBox.Show(
this,
"Certificate does not exist or its private key cannot be accessed.",
caption,
MessageBoxButtons.OK,
MessageBoxIcon.Information);
return;
}
string displayName = null;
foreach (string element in Utils.ParseDistinguishedName(certificate.Subject))
{
if (element.StartsWith("CN="))
{
displayName = element.Substring(3);
break;
}
}
StringBuilder filePath = new StringBuilder();
if (!String.IsNullOrEmpty(displayName))
{
filePath.Append(displayName);
filePath.Append(" ");
}
filePath.Append("[");
filePath.Append(certificate.Thumbprint);
filePath.Append("].pfx");
SaveFileDialog dialog = new SaveFileDialog();
dialog.CheckFileExists = false;
dialog.CheckPathExists = true;
dialog.DefaultExt = ".pfx";
dialog.Filter = "PKCS#12 Files (*.pfx)|*.pfx|All Files (*.*)|*.*";
dialog.ValidateNames = true;
dialog.Title = "Save Private File";
dialog.FileName = filePath.ToString();
dialog.InitialDirectory = m_currentDirectory;
if (dialog.ShowDialog() != DialogResult.OK)
{
return;
}
string password = new PasswordDlg().ShowDialog(null, "Password recommended");
FileInfo fileInfo = new FileInfo(dialog.FileName);
m_currentDirectory = fileInfo.DirectoryName;
// save the file.
using (Stream ostrm = fileInfo.Open(FileMode.Create, FileAccess.ReadWrite, FileShare.None))
{
byte[] data = certificate.Export(X509ContentType.Pkcs12, password);
ostrm.Write(data, 0, data.Length);
}
// save the public key.
string fileRoot = fileInfo.FullName.Substring(0, fileInfo.FullName.Length - fileInfo.Extension.Length);
fileRoot += ".der";
using (Stream ostrm = File.Open(fileRoot, FileMode.Create, FileAccess.ReadWrite, FileShare.None))
{
byte[] data = certificate.RawData;
ostrm.Write(data, 0, data.Length);
}
// check if original certificate should be deleted.
if (new YesNoDlg().ShowDialog("Delete original certificate?", caption) == DialogResult.Yes)
{
ICertificateStore physicalStore = id.OpenStore();
try
{
physicalStore.Delete(certificate.Thumbprint);
}
finally
{
physicalStore.Close();
}
}
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
