/// <summary>
/// Unprotected an authenticator (if possible)
/// </summary>
/// <param name="item">item to unprotect</param>
/// <param name="screen">screen to display dialog for multi-monitors</param>
/// <returns></returns>
private DialogResult UnprotectAuthenticator(AuthenticatorListitem item, Screen screen = null)
{
// keep a count so we can have multiples
if (item.UnprotectCount > 0)
{
item.UnprotectCount++;
return DialogResult.OK;
}
// if there is no protection return None
WinAuthAuthenticator auth = item.Authenticator;
if (auth.AuthenticatorData == null || auth.AuthenticatorData.RequiresPassword == false)
{
return DialogResult.None;
}
// request the password
UnprotectPasswordForm getPassForm = new UnprotectPasswordForm();
getPassForm.Authenticator = auth;
if (screen != null)
{
// center on the current windows screen (in case of multiple monitors)
getPassForm.StartPosition = FormStartPosition.Manual;
int left = (screen.Bounds.Width / 2) - (getPassForm.Width / 2) + screen.Bounds.Left;
int top = (screen.Bounds.Height / 2) - (getPassForm.Height / 2) + screen.Bounds.Top;
getPassForm.Location = new Point(left, top);
}
else
{
getPassForm.StartPosition = FormStartPosition.CenterScreen;
}
DialogResult result = getPassForm.ShowDialog(this.Parent as Form);
if (result == DialogResult.OK)
{
item.UnprotectCount++;
}
return result;
}
public static void ExportAuthenticators(Form form, IList<WinAuthAuthenticator> authenticators, string file, string password, string pgpKey)
{
// create file in memory
using (var ms = new MemoryStream())
{
using (var sw = new StreamWriter(ms))
{
List<WinAuthAuthenticator> unprotected = new List<WinAuthAuthenticator>();
foreach (var auth in authenticators)
{
// unprotect if necessary
if (auth.AuthenticatorData.RequiresPassword == true)
{
// request the password
UnprotectPasswordForm getPassForm = new UnprotectPasswordForm();
getPassForm.Authenticator = auth;
DialogResult result = getPassForm.ShowDialog(form);
if (result == DialogResult.OK)
{
unprotected.Add(auth);
}
else
{
continue;
}
}
string line = auth.ToUrl();
sw.WriteLine(line);
}
// reprotect
foreach (var auth in unprotected)
{
auth.AuthenticatorData.Protect();
}
// reset and write stream out to disk or as zip
sw.Flush();
ms.Seek(0, SeekOrigin.Begin);
// reset and write stream out to disk or as zip
if (string.Compare(Path.GetExtension(file), ".zip", true) == 0)
{
using (var zip = new ZipOutputStream(new FileStream(file, FileMode.Create, FileAccess.Write)))
{
if (string.IsNullOrEmpty(password) == false)
{
zip.Password = password;
}
zip.IsStreamOwner = true;
ZipEntry entry = new ZipEntry(ZipEntry.CleanName(Path.GetFileNameWithoutExtension(file) + ".txt"));
entry.DateTime = DateTime.Now;
zip.UseZip64 = UseZip64.Off;
zip.PutNextEntry(entry);
byte[] buffer = new byte[4096];
StreamUtils.Copy(ms, zip, buffer);
zip.CloseEntry();
}
}
else if (string.IsNullOrEmpty(pgpKey) == false)
{
using (var sr = new StreamReader(ms))
{
var plain = sr.ReadToEnd();
string encoded = PGPEncrypt(plain, pgpKey);
File.WriteAllText(file, encoded);
}
}
else
{
using (var fs = new FileStream(file, FileMode.Create, FileAccess.Write))
{
byte[] buffer = new byte[4096];
StreamUtils.Copy(ms, fs, buffer);
}
}
}
}
}