/// <summary>
/// Verify and create the authenticator if needed
/// </summary>
/// <returns>true is successful</returns>
private bool verifyAuthenticator(string privatekey)
{
if (string.IsNullOrEmpty(privatekey) == true)
{
return(false);
}
this.Authenticator.Name = nameField.Text;
int digits = (this.Authenticator.AuthenticatorData != null ? this.Authenticator.AuthenticatorData.CodeDigits : GoogleAuthenticator.DEFAULT_CODE_DIGITS);
if (string.IsNullOrEmpty(digitsField.Text) == true || int.TryParse(digitsField.Text, out digits) == false || digits <= 0)
{
return(false);
}
WinAuth.Authenticator.HMACTypes hmac = WinAuth.Authenticator.HMACTypes.SHA1;
#if NETFX_3
try
{
hmac = (WinAuth.Authenticator.HMACTypes)Enum.Parse(typeof(WinAuth.Authenticator.HMACTypes), (string)hashField.SelectedItem, true);
}
catch (Exception) { }
#else
Enum.TryParse <WinAuth.Authenticator.HMACTypes>((string)hashField.SelectedItem, out hmac);
#endif
string authtype = timeBasedRadio.Checked == true ? TOTP : HOTP;
int period = 0;
if (string.IsNullOrEmpty(intervalField.Text) == true || int.TryParse(intervalField.Text, out period) == false || period <= 0)
{
return(false);
}
long counter = 0;
// if this is a URL, pull it down
Uri uri;
Match match;
if (Regex.IsMatch(privatekey, "https?://.*") == true && Uri.TryCreate(privatekey, UriKind.Absolute, out uri) == true)
{
try
{
var request = (HttpWebRequest)WebRequest.Create(uri);
request.AllowAutoRedirect = true;
request.Timeout = 20000;
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)";
using (var response = (HttpWebResponse)request.GetResponse())
{
if (response.StatusCode == HttpStatusCode.OK && response.ContentType.StartsWith("image/", StringComparison.OrdinalIgnoreCase) == true)
{
using (Bitmap bitmap = (Bitmap)Bitmap.FromStream(response.GetResponseStream()))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = HttpUtility.UrlDecode(result.Text);
}
}
}
}
}
catch (Exception ex)
{
WinAuthForm.ErrorDialog(this.Owner, "Cannot load QR code image from " + privatekey, ex);
return(false);
}
}
else if ((match = Regex.Match(privatekey, @"data:image/([^;]+);base64,(.*)", RegexOptions.IgnoreCase)).Success == true)
{
byte[] imagedata = Convert.FromBase64String(match.Groups[2].Value);
using (MemoryStream ms = new MemoryStream(imagedata))
{
using (Bitmap bitmap = (Bitmap)Bitmap.FromStream(ms))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = HttpUtility.UrlDecode(result.Text);
}
}
}
}
else if (IsValidFile(privatekey) == true)
{
// assume this is the image file
using (Bitmap bitmap = (Bitmap)Bitmap.FromFile(privatekey))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = result.Text;
}
}
}
string issuer = null;
string serial = null;
// check for otpauth://, e.g. "otpauth://totp/[email protected]?secret=IHZJDKAEEC774BMUK3GX6SA"
match = Regex.Match(privatekey, @"otpauth://([^/]+)/([^?]+)\?(.*)", RegexOptions.IgnoreCase);
if (match.Success == true)
{
authtype = match.Groups[1].Value.ToLower();
string label = match.Groups[2].Value;
int p = label.IndexOf(":");
if (p != -1)
{
issuer = label.Substring(0, p);
label = label.Substring(p + 1);
}
NameValueCollection qs = WinAuthHelper.ParseQueryString(match.Groups[3].Value);
privatekey = qs["secret"] ?? privatekey;
int querydigits;
if (int.TryParse(qs["digits"], out querydigits) && querydigits != 0)
{
digits = querydigits;
}
if (qs["counter"] != null)
{
long.TryParse(qs["counter"], out counter);
}
issuer = qs["issuer"];
if (string.IsNullOrEmpty(issuer) == false)
{
label = issuer + (string.IsNullOrEmpty(label) == false ? " (" + label + ")" : string.Empty);
}
serial = qs["serial"];
if (string.IsNullOrEmpty(label) == false)
{
this.Authenticator.Name = this.nameField.Text = label;
}
string periods = qs["period"];
if (string.IsNullOrEmpty(periods) == false)
{
int.TryParse(periods, out period);
}
if (qs["algorithm"] != null)
{
#if NETFX_3
try
{
hmac = (WinAuth.Authenticator.HMACTypes)Enum.Parse(typeof(WinAuth.Authenticator.HMACTypes), qs["algorithm"], true);
hashField.SelectedItem = hmac.ToString();
}
catch (Exception) { }
#else
if (Enum.TryParse <WinAuth.Authenticator.HMACTypes>(qs["algorithm"], true, out hmac) == true)
{
hashField.SelectedItem = hmac.ToString();
}
#endif
}
}
// just get the hex chars
privatekey = Regex.Replace(privatekey, @"[^0-9a-z]", "", RegexOptions.IgnoreCase);
if (privatekey.Length == 0)
{
WinAuthForm.ErrorDialog(this.Owner, "The secret code is not valid");
return(false);
}
try
{
Authenticator auth;
if (authtype == TOTP)
{
if (string.Compare(issuer, "BattleNet", true) == 0)
{
if (string.IsNullOrEmpty(serial) == true)
{
throw new ApplicationException("Battle.net Authenticator does not have a serial");
}
serial = serial.ToUpper();
if (Regex.IsMatch(serial, @"^[A-Z]{2}-?[\d]{4}-?[\d]{4}-?[\d]{4}$") == false)
{
throw new ApplicationException("Invalid serial for Battle.net Authenticator");
}
auth = new BattleNetAuthenticator();
((BattleNetAuthenticator)auth).SecretKey = Base32.getInstance().Decode(privatekey);
((BattleNetAuthenticator)auth).Serial = serial;
issuer = string.Empty;
}
else if (issuer == "Steam")
{
auth = new SteamAuthenticator();
((SteamAuthenticator)auth).SecretKey = Base32.getInstance().Decode(privatekey);
((SteamAuthenticator)auth).Serial = string.Empty;
((SteamAuthenticator)auth).DeviceId = string.Empty;
//((SteamAuthenticator)auth).RevocationCode = string.Empty;
((SteamAuthenticator)auth).SteamData = string.Empty;
this.Authenticator.Skin = null;
issuer = string.Empty;
}
else
{
auth = new GoogleAuthenticator();
((GoogleAuthenticator)auth).Enroll(privatekey);
}
timer.Enabled = true;
codeProgress.Visible = true;
timeBasedRadio.Checked = true;
}
else if (authtype == HOTP)
{
auth = new HOTPAuthenticator();
if (counterField.Text.Trim().Length != 0)
{
long.TryParse(counterField.Text.Trim(), out counter);
}
((HOTPAuthenticator)auth).Enroll(privatekey, counter); // start with the next code
timer.Enabled = false;
codeProgress.Visible = false;
counterBasedRadio.Checked = true;
}
else
{
WinAuthForm.ErrorDialog(this.Owner, "Only TOTP or HOTP authenticators are supported");
return(false);
}
auth.HMACType = hmac;
auth.CodeDigits = digits;
auth.Period = period;
this.Authenticator.AuthenticatorData = auth;
if (digits > 5)
{
codeField.SpaceOut = digits / 2;
}
else
{
codeField.SpaceOut = 0;
}
//string key = Base32.getInstance().Encode(this.Authenticator.AuthenticatorData.SecretKey);
this.codeField.Text = auth.CurrentCode;
codeProgress.Maximum = period;
if (!(auth is HOTPAuthenticator) && auth.ServerTimeDiff == 0L && SyncErrorWarned == false)
{
SyncErrorWarned = true;
MessageBox.Show(this, string.Format(strings.AuthenticatorSyncError, "Google"), WinAuthMain.APPLICATION_TITLE, MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
catch (Exception irre)
{
WinAuthForm.ErrorDialog(this.Owner, "Unable to create the authenticator. The secret code is probably invalid.", irre);
return(false);
}
return(true);
}
/// <summary>
/// Enroll the authenticator with the server.
public void Enroll(string b32key)
{
SecretKey = Base32.GetInstance().Decode(b32key);
Sync();
}
/// <summary>
/// Verify and create the authenticator if needed
/// </summary>
/// <returns>true is successful</returns>
private bool verifyAuthenticator(string privatekey)
{
if (string.IsNullOrEmpty(privatekey))
{
return(false);
}
Authenticator.Name = nameField.Text;
var authtype = "totp";
// if this is a URL, pull it down
Uri uri;
Match match;
if (Regex.IsMatch(privatekey, "https?://.*") && Uri.TryCreate(privatekey, UriKind.Absolute, out uri))
{
try
{
var request = (HttpWebRequest)WebRequest.Create(uri);
request.AllowAutoRedirect = true;
request.Timeout = 20000;
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)";
using (var response = (HttpWebResponse)request.GetResponse())
{
if (response.StatusCode == HttpStatusCode.OK &&
response.ContentType.StartsWith("image/", StringComparison.OrdinalIgnoreCase))
{
using (var bitmap = (Bitmap)Image.FromStream(response.GetResponseStream()))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = HttpUtility.UrlDecode(result.Text);
}
}
}
}
}
catch (Exception ex)
{
WinAuthForm.ErrorDialog(Owner, "Cannot load QR code image from " + privatekey, ex);
return(false);
}
}
else if ((match = Regex.Match(privatekey, @"data:image/([^;]+);base64,(.*)", RegexOptions.IgnoreCase))
.Success)
{
var imagedata = Convert.FromBase64String(match.Groups[2].Value);
using (var ms = new MemoryStream(imagedata))
{
using (var bitmap = (Bitmap)Image.FromStream(ms))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = HttpUtility.UrlDecode(result.Text);
}
}
}
}
else if (IsValidFile(privatekey))
{
// assume this is the image file
using (var bitmap = (Bitmap)Image.FromFile(privatekey))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = result.Text;
}
}
}
// check for otpauth://, e.g. "otpauth://totp/[email protected]?secret=IHZJDKAEEC774BMUK3GX6SA"
match = Regex.Match(privatekey, @"otpauth://([^/]+)/([^?]+)\?(.*)", RegexOptions.IgnoreCase);
if (match.Success)
{
authtype = match.Groups[1].Value; // @todo we only handle totp (not hotp)
if (string.Compare(authtype, "totp", true) != 0)
{
WinAuthForm.ErrorDialog(Owner,
"Only time-based (TOTP) authenticators are supported when adding a Google Authenticator. Use the general \"Add Authenticator\" for counter-based (HOTP) authenticators.");
return(false);
}
var label = match.Groups[2].Value;
if (string.IsNullOrEmpty(label) == false)
{
Authenticator.Name = nameField.Text = label;
}
var qs = WinAuthHelper.ParseQueryString(match.Groups[3].Value);
privatekey = qs["secret"] ?? privatekey;
}
// just get the hex chars
privatekey = Regex.Replace(privatekey, @"[^0-9a-z]", "", RegexOptions.IgnoreCase);
if (privatekey.Length == 0)
{
WinAuthForm.ErrorDialog(Owner, "The secret code is not valid");
return(false);
}
try
{
var auth = new GoogleAuthenticator();
auth.Enroll(privatekey);
Authenticator.AuthenticatorData = auth;
codeProgress.Visible = true;
var key = Base32.getInstance().Encode(Authenticator.AuthenticatorData.SecretKey);
secretCodeField.Text = Regex.Replace(key, ".{3}", "$0 ").Trim();
codeField.Text = auth.CurrentCode;
if (auth.ServerTimeDiff == 0L && SyncErrorWarned == false)
{
SyncErrorWarned = true;
MessageBox.Show(this, string.Format(strings.AuthenticatorSyncError, "Google"),
WinAuthMain.APPLICATION_TITLE, MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
catch (Exception irre)
{
WinAuthForm.ErrorDialog(Owner,
"Unable to create the authenticator. The secret code is probably invalid.", irre);
return(false);
}
return(true);
}
/// <summary>
/// Create a KeyUriFormat compatible URL
/// See https://code.google.com/p/google-authenticator/wiki/KeyUriFormat
/// </summary>
/// <returns>string</returns>
public virtual string ToUrl(bool compat = false)
{
string type = "totp";
string extraparams = string.Empty;
Match match;
string issuer = this.AuthenticatorData.Issuer;
string label = this.Name;
if (string.IsNullOrEmpty(issuer) == true && (match = Regex.Match(label, @"^([^\(]+)\s+\((.*?)\)(.*)")).Success == true)
{
issuer = match.Groups[1].Value;
label = match.Groups[2].Value + match.Groups[3].Value;
}
if (string.IsNullOrEmpty(issuer) == false && (match = Regex.Match(label, @"^" + issuer + @"\s+\((.*?)\)(.*)")).Success == true)
{
label = match.Groups[1].Value + match.Groups[2].Value;
}
if (string.IsNullOrEmpty(issuer) == false)
{
extraparams += "&issuer=" + HttpUtility.UrlEncode(issuer);
}
if (this.AuthenticatorData is BattleNetAuthenticator)
{
extraparams += "&serial=" + HttpUtility.UrlEncode(((BattleNetAuthenticator)this.AuthenticatorData).Serial.Replace("-", ""));
}
else if (this.AuthenticatorData is SteamAuthenticator)
{
if (compat == false)
{
extraparams += "&deviceid=" + HttpUtility.UrlEncode(((SteamAuthenticator)this.AuthenticatorData).DeviceId);
extraparams += "&data=" + HttpUtility.UrlEncode(((SteamAuthenticator)this.AuthenticatorData).SteamData);
}
}
else if (this.AuthenticatorData is HOTPAuthenticator)
{
type = "hotp";
extraparams += "&counter=" + ((HOTPAuthenticator)this.AuthenticatorData).Counter;
}
string secret = HttpUtility.UrlEncode(Base32.getInstance().Encode(this.AuthenticatorData.SecretKey));
// add the skin
if (string.IsNullOrEmpty(this.Skin) == false && compat == false)
{
if (this.Skin.StartsWith("base64:") == true)
{
byte[] bytes = Convert.FromBase64String(this.Skin.Substring(7));
string icon32 = Base32.getInstance().Encode(bytes);
extraparams += "&icon=" + HttpUtility.UrlEncode("base64:" + icon32);
}
else
{
extraparams += "&icon=" + HttpUtility.UrlEncode(this.Skin.Replace("Icon.png", ""));
}
}
var url = string.Format("otpauth://" + type + "/{0}?secret={1}&digits={2}{3}",
(string.IsNullOrEmpty(issuer) == false ? issuer + ":" + HttpUtility.UrlEncode(label) : HttpUtility.UrlEncode(label)),
secret,
this.AuthenticatorData.CodeDigits,
extraparams);
return(url);
}
/// <summary>
/// Set the private key for the authenticator
/// </summary>
/// <param name="b32key">base32 encoded key</param>
public void Enroll(string b32key, long counter = 0)
{
SecretKey = Base32.getInstance().Decode(b32key);
Counter = counter;
}
/// <summary>
/// Verify and create the authenticator if needed
/// </summary>
/// <returns>true is successful</returns>
private bool verifyAuthenticator(string privatekey)
{
if (string.IsNullOrEmpty(privatekey) == true)
{
return(false);
}
this.Authenticator.Name = nameField.Text;
int digits = (this.Authenticator.AuthenticatorData != null ? this.Authenticator.AuthenticatorData.CodeDigits : GoogleAuthenticator.DEFAULT_CODE_DIGITS);
string authtype = timeBasedRadio.Checked == true ? TOTP : HOTP;
long counter = 0;
// if this is a URL, pull it down
Uri uri;
Match match;
if (Regex.IsMatch(privatekey, "https?://.*") == true && Uri.TryCreate(privatekey, UriKind.Absolute, out uri) == true)
{
try
{
var request = (HttpWebRequest)WebRequest.Create(uri);
request.AllowAutoRedirect = true;
request.Timeout = 20000;
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)";
using (var response = (HttpWebResponse)request.GetResponse())
{
if (response.StatusCode == HttpStatusCode.OK && response.ContentType.StartsWith("image/", StringComparison.OrdinalIgnoreCase) == true)
{
using (Bitmap bitmap = (Bitmap)Bitmap.FromStream(response.GetResponseStream()))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = HttpUtility.UrlDecode(result.Text);
}
}
}
}
}
catch (Exception ex)
{
WinAuthForm.ErrorDialog(this.Owner, "Cannot load QR code image from " + privatekey, ex);
return(false);
}
}
else if ((match = Regex.Match(privatekey, @"data:image/([^;]+);base64,(.*)", RegexOptions.IgnoreCase)).Success == true)
{
byte[] imagedata = Convert.FromBase64String(match.Groups[2].Value);
using (MemoryStream ms = new MemoryStream(imagedata))
{
using (Bitmap bitmap = (Bitmap)Bitmap.FromStream(ms))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = HttpUtility.UrlDecode(result.Text);
}
}
}
}
else if (IsValidFile(privatekey) == true)
{
// assume this is the image file
using (Bitmap bitmap = (Bitmap)Bitmap.FromFile(privatekey))
{
IBarcodeReader reader = new BarcodeReader();
var result = reader.Decode(bitmap);
if (result != null)
{
privatekey = result.Text;
}
}
}
// check for otpauth://, e.g. "otpauth://totp/[email protected]?secret=IHZJDKAEEC774BMUK3GX6SA"
match = Regex.Match(privatekey, @"otpauth://([^/]+)/([^?]+)\?(.*)", RegexOptions.IgnoreCase);
if (match.Success == true)
{
authtype = match.Groups[1].Value.ToLower();
string label = match.Groups[2].Value;
NameValueCollection qs = WinAuthHelper.ParseQueryString(match.Groups[3].Value);
privatekey = qs["secret"] ?? privatekey;
int querydigits;
if (int.TryParse(qs["digits"], out querydigits) && querydigits != 0)
{
digits = querydigits;
}
if (qs["counter"] != null)
{
long.TryParse(qs["counter"], out counter);
}
string issuer = qs["issuer"];
if (string.IsNullOrEmpty(issuer) == false)
{
label = issuer + (string.IsNullOrEmpty(label) == false ? " (" + label + ")" : string.Empty);
}
if (string.IsNullOrEmpty(label) == false)
{
this.Authenticator.Name = this.nameField.Text = label;
}
}
// just get the hex chars
privatekey = Regex.Replace(privatekey, @"[^0-9a-z]", "", RegexOptions.IgnoreCase);
if (privatekey.Length == 0)
{
WinAuthForm.ErrorDialog(this.Owner, "The secret code is not valid");
return(false);
}
try
{
Authenticator auth;
if (authtype == TOTP)
{
auth = new GoogleAuthenticator();
((GoogleAuthenticator)auth).Enroll(privatekey);
timer.Enabled = true;
codeProgress.Visible = true;
timeBasedRadio.Checked = true;
}
else if (authtype == HOTP)
{
auth = new HOTPAuthenticator();
if (counterField.Text.Trim().Length != 0)
{
long.TryParse(counterField.Text.Trim(), out counter);
}
((HOTPAuthenticator)auth).Enroll(privatekey, counter); // start with the next code
timer.Enabled = false;
codeProgress.Visible = false;
counterBasedRadio.Checked = true;
}
else
{
WinAuthForm.ErrorDialog(this.Owner, "Only TOTP or HOTP authenticators are supported");
return(false);
}
auth.CodeDigits = digits;
this.Authenticator.AuthenticatorData = auth;
codeField.SpaceOut = digits / 2;
string key = Base32.getInstance().Encode(this.Authenticator.AuthenticatorData.SecretKey);
//this.secretCodeField.Text = Regex.Replace(key, ".{3}", "$0 ").Trim();
this.codeField.Text = auth.CurrentCode;
if (!(auth is HOTPAuthenticator) && auth.ServerTimeDiff == 0L && SyncErrorWarned == false)
{
SyncErrorWarned = true;
MessageBox.Show(this, string.Format(strings.AuthenticatorSyncError, "Google"), WinAuthMain.APPLICATION_TITLE, MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
catch (Exception irre)
{
WinAuthForm.ErrorDialog(this.Owner, "Unable to create the authenticator. The secret code is probably invalid.", irre);
return(false);
}
return(true);
}
