/// <summary>
/// Read the encrpyted backup registry entries to be sent within the diagnostics report
/// </summary>
public static string ReadBackupFromRegistry(WinAuthConfig config)
{
StringBuilder buffer = new StringBuilder();
foreach (string name in config.ReadSettingKeys(WINAUTHREGKEY_BACKUP))
{
object val = ReadRegistryValue(name);
if (val != null)
{
buffer.Append(name + "=" + Convert.ToString(val)).Append(Environment.NewLine);
}
}
return buffer.ToString();
}
/// <summary>
/// Save a PGP encrypted version of the config into the registry for recovery
///
/// Issue#133: this just compounds each time we load, and is really pointless so we are removing it
/// but in the meantime we have to clear it out
/// </summary>
/// <param name="config"></param>
private static void SaveToRegistry(WinAuthConfig config)
{
config.WriteSetting(WINAUTHREGKEY_CONFIGBACKUP, null);
}
/// <summary>
/// Save a PGP encrypted version of an authenticator into the registry for recovery
/// </summary>
/// <param name="wa">WinAuthAuthenticator instance</param>
public static void SaveToRegistry(WinAuthConfig config, WinAuthAuthenticator wa)
{
if (config == null || wa == null || wa.AuthenticatorData == null)
{
return;
}
using (SHA256 sha = new SHA256Managed())
{
// get a hash based on the authenticator key
string authkey = Convert.ToBase64String(sha.ComputeHash(Encoding.UTF8.GetBytes(wa.AuthenticatorData.SecretData)));
// save the PGP encrypted key
using (EncodedStringWriter sw = new EncodedStringWriter(Encoding.UTF8))
{
XmlWriterSettings xmlsettings = new XmlWriterSettings();
xmlsettings.Indent = true;
using (XmlWriter xw = XmlWriter.Create(sw, xmlsettings))
{
xw.WriteStartElement("WinAuth");
xw.WriteAttributeString("version", System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString(2));
wa.WriteXmlString(xw);
xw.WriteEndElement();
}
string pgpkey = string.IsNullOrEmpty(config.PGPKey) == false ? config.PGPKey : WinAuthHelper.WINAUTH_PGP_PUBLICKEY;
config.WriteSetting(WINAUTHREGKEY_BACKUP + "\\" + authkey, PGPEncrypt(sw.ToString(), pgpkey));
}
}
}
/// <summary>
/// Save the authenticator
/// </summary>
/// <param name="configFile">filename to save to</param>
/// <param name="config">current settings to save</param>
public static void SaveConfig(WinAuthConfig config)
{
// create the xml
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.Encoding = Encoding.UTF8;
// Issue 41 (http://code.google.com/p/winauth/issues/detail?id=41): saving may crash leaving file corrupt, so write into memory stream first before an atomic file write
using (MemoryStream ms = new MemoryStream())
{
// save config into memory
using (XmlWriter writer = XmlWriter.Create(ms, settings))
{
config.WriteXmlString(writer);
}
// if no config file yet, use default
if (string.IsNullOrEmpty(config.Filename) == true)
{
string configDirectory = Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), WinAuthMain.APPLICATION_NAME);
Directory.CreateDirectory(configDirectory);
config.Filename = Path.Combine(configDirectory, DEFAULT_AUTHENTICATOR_FILE_NAME);
}
FileInfo fi = new FileInfo(config.Filename);
if (!fi.Exists || !fi.IsReadOnly)
{
// write memory stream to file
try
{
byte[] data = ms.ToArray();
using (FileStream fs = new FileStream(config.Filename, FileMode.Create, FileAccess.Write, FileShare.None))
{
fs.Write(data, 0, data.Length);
}
}
catch (UnauthorizedAccessException )
{
// fail silently if read only
if (fi.IsReadOnly)
{
config.IsReadOnly = true;
return;
}
throw;
}
}
}
}
/// <summary>
/// Load the authenticator and configuration settings
/// </summary>
/// <param name="form">parent winform</param>
/// <param name="configFile">name of configfile or null for auto</param>
/// <param name="password">optional supplied password or null to prompt if necessatu</param>
/// <returns>new WinAuthConfig settings</returns>
public static WinAuthConfig LoadConfig(Form form, string configFile, string password = null)
{
WinAuthConfig config = new WinAuthConfig();
if (string.IsNullOrEmpty(password) == false)
{
config.Password = password;
}
if (string.IsNullOrEmpty(configFile) == true)
{
// check for file in current directory
configFile = Path.Combine(Environment.CurrentDirectory, DEFAULT_AUTHENTICATOR_FILE_NAME);
if (File.Exists(configFile) == false)
{
configFile = null;
}
}
if (string.IsNullOrEmpty(configFile) == true)
{
// check for file in exe directory
configFile = Path.Combine(Path.GetDirectoryName(Application.ExecutablePath), DEFAULT_AUTHENTICATOR_FILE_NAME);
if (File.Exists(configFile) == false)
{
configFile = null;
}
}
if (string.IsNullOrEmpty(configFile) == true)
{
// do we have a file specific in the registry?
string configDirectory = Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), WinAuthMain.APPLICATION_NAME);
// check for default authenticator
configFile = Path.Combine(configDirectory, DEFAULT_AUTHENTICATOR_FILE_NAME);
// if no config file, just return a blank config
if (File.Exists(configFile) == false)
{
return config;
}
}
// if no config file when one was specified; report an error
if (File.Exists(configFile) == false)
{
//MessageBox.Show(form,
// strings.CannotFindConfigurationFile + ": " + configFile,
// form.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
// return config;
throw new ApplicationException(strings.CannotFindConfigurationFile + ": " + configFile);
}
// check if readonly
FileInfo fi = new FileInfo(configFile);
if (fi.Exists && fi.IsReadOnly)
{
config.IsReadOnly = true;
}
bool changed = false;
try
{
using (FileStream fs = new FileStream(configFile, FileMode.Open, FileAccess.Read))
{
XmlReader reader = XmlReader.Create(fs);
changed = config.ReadXml(reader, password);
}
config.Filename = configFile;
if (config.Version < WinAuthConfig.CURRENTVERSION)
{
// set new created values
foreach (WinAuthAuthenticator wa in config)
{
wa.Created = fi.CreationTime;
}
config.Upgraded = true;
}
if (changed == true && config.IsReadOnly == false)
{
SaveConfig(config);
}
}
catch (EncrpytedSecretDataException )
{
// we require a password
throw;
}
catch (BadPasswordException)
{
// we require a password
throw;
}
catch (Exception )
{
throw;
}
SaveToRegistry(config);
return config;
}
/// <summary>
/// Run an action on the authenticator
/// </summary>
/// <param name="auth">Authenticator to use</param>
/// <param name="action">Action to perform</param>
private void RunAction(WinAuthAuthenticator auth, WinAuthConfig.NotifyActions action)
{
// get the code
string code = null;
try
{
code = auth.CurrentCode;
}
catch (EncrpytedSecretDataException)
{
// if the authenticator is current protected we display the password window, get the code, and reprotect it
// with a bit of window jiggling to make sure we get focus and then put it back
// save the current window
var fgwindow = WinAPI.GetForegroundWindow();
Screen screen = Screen.FromHandle(fgwindow);
IntPtr activewindow = IntPtr.Zero;
if (this.Visible == true)
{
activewindow = WinAPI.SetActiveWindow(this.Handle);
BringToFront();
}
var item = authenticatorList.Items.Cast<AuthenticatorListitem>().Where(i => i.Authenticator == auth).FirstOrDefault();
code = authenticatorList.GetItemCode(item, screen);
// restore active window
if (activewindow != IntPtr.Zero)
{
WinAPI.SetActiveWindow(activewindow);
}
WinAPI.SetForegroundWindow(fgwindow);
}
if (code != null)
{
KeyboardSender keysend = new KeyboardSender(auth.HotKey != null ? auth.HotKey.Window : null);
string command = null;
if (action == WinAuthConfig.NotifyActions.CopyToClipboard)
{
command = "{COPY}";
}
else if (action == WinAuthConfig.NotifyActions.HotKey)
{
command = auth.HotKey != null ? auth.HotKey.Advanced : null;
}
else // if (this.Config.NotifyAction == WinAuthConfig.NotifyActions.Notification)
{
if (code.Length > 5)
{
code = code.Insert(code.Length / 2, " ");
}
notifyIcon.ShowBalloonTip(10000, auth.Name, code, ToolTipIcon.Info);
}
if (command != null)
{
keysend.SendKeys(this, command, code);
}
}
}
/// <summary>
/// Create the version checker instance
/// </summary>
public WinAuthUpdater(WinAuthConfig config)
{
Config = config;
// read the update interval and last known latest version from the registry
TimeSpan interval;
if (TimeSpan.TryParse(Config.ReadSetting(WINAUTHREGKEY_CHECKFREQUENCY, string.Empty), out interval) == true)
{
_autocheckInterval = interval;
}
long lastCheck = 0;
if (long.TryParse(Config.ReadSetting(WINAUTHREGKEY_LASTCHECK, null), out lastCheck) == true)
{
_lastCheck = new DateTime(lastCheck);
}
Version version;
#if NETFX_4
if (Version.TryParse(Config.ReadSetting(WINAUTHREGKEY_LATESTVERSION, string.Empty), out version) == true)
{
_latestVersion = version;
}
#endif
#if NETFX_3
try
{
version = new Version(Config.ReadSetting(WINAUTHREGKEY_LATESTVERSION, string.Empty));
_latestVersion = version;
}
catch (Exception) { }
#endif
}
/// <summary>
/// Save the authenticator
/// </summary>
/// <param name="configFile">filename to save to</param>
/// <param name="config">current settings to save</param>
public static void SaveConfig(WinAuthConfig config)
{
// create the xml
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.Encoding = Encoding.UTF8;
// Issue 41 (http://code.google.com/p/winauth/issues/detail?id=41): saving may crash leaving file corrupt, so write into memory stream first before an atomic file write
using (MemoryStream ms = new MemoryStream())
{
// save config into memory
using (XmlWriter writer = XmlWriter.Create(ms, settings))
{
config.WriteXmlString(writer);
}
// if no config file yet, use default
if (string.IsNullOrEmpty(config.Filename) == true)
{
string configDirectory = Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), WinAuthMain.APPLICATION_NAME);
Directory.CreateDirectory(configDirectory);
config.Filename = Path.Combine(configDirectory, DEFAULT_AUTHENTICATOR_FILE_NAME);
}
FileInfo fi = new FileInfo(config.Filename);
if (!fi.Exists || !fi.IsReadOnly)
{
// write memory stream to file
try
{
byte[] data = ms.ToArray();
// getting instance of zerod files, so do some sanity checks
if (data.Length == 0 || data[0] == 0)
{
throw new ApplicationException("Zero data when saving config");
}
using (FileStream fs = new FileStream(config.Filename, FileMode.Create, FileAccess.Write, FileShare.None))
{
fs.Write(data, 0, data.Length);
fs.Flush();
}
// read it back
var verify = File.ReadAllBytes(config.Filename);
if (verify.Length != data.Length || verify.SequenceEqual(data) == false)
{
throw new ApplicationException("Save config doesn't compare with memory: " + Convert.ToBase64String(data));
}
}
catch (UnauthorizedAccessException )
{
// fail silently if read only
if (fi.IsReadOnly)
{
config.IsReadOnly = true;
return;
}
throw;
}
}
}
}
