/// <summary>
/// Form loaded event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ShowSteamSecretForm_Load(object sender, EventArgs e)
{
this.revocationcodeField.SecretMode = true;
SteamAuthenticator authenticator = CurrentAuthenticator.AuthenticatorData as SteamAuthenticator;
this.revocationcodeField.Text = authenticator.RevocationCode;
}
/// <summary>
/// Import the selected SDA account
/// </summary>
/// <returns>true if successful</returns>
private bool ImportSDA()
{
var entry = importSDAList.SelectedItem as ImportedSDAEntry;
if (entry == null)
{
WinAuthForm.ErrorDialog(this, "Please load and select a Steam account");
return(false);
}
var auth = new SteamAuthenticator();
var token = JObject.Parse(entry.json);
foreach (var prop in token.Root.Children().ToList())
{
var child = token.SelectToken(prop.Path);
var lkey = prop.Path.ToLower();
if (lkey == "fully_enrolled" || lkey == "session")
{
prop.Remove();
}
else if (lkey == "device_id")
{
auth.DeviceId = child.Value <string>();
prop.Remove();
}
else if (lkey == "serial_number")
{
auth.Serial = child.Value <string>();
}
else if (lkey == "account_name")
{
if (nameField.Text.Length == 0)
{
nameField.Text = "Steam (" + child.Value <string>() + ")";
}
}
else if (lkey == "shared_secret")
{
auth.SecretKey = Convert.FromBase64String(child.Value <string>());
}
}
auth.SteamData = token.ToString(Formatting.None);
Authenticator.AuthenticatorData = auth;
return(true);
}
/// <summary>
/// Form loaded event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ShowSteamSecretForm_Load(object sender, EventArgs e)
{
this.revocationcodeField.SecretMode = true;
this.deviceidField.SecretMode = true;
this.steamdataField.SecretMode = false;
SteamAuthenticator authenticator = CurrentAuthenticator.AuthenticatorData as SteamAuthenticator;
this.deviceidField.Text = authenticator.DeviceId;
if (string.IsNullOrEmpty(authenticator.SteamData) == false && authenticator.SteamData[0] == '{')
{
this.revocationcodeField.Text = JObject.Parse(authenticator.SteamData).SelectToken("revocation_code").Value <string>();
if (authenticator.SteamData.IndexOf("shared_secret") != -1)
{
this.steamdataField.SecretMode = true;
this.steamdataField.Text = authenticator.SteamData;
this.steamdataField.ForeColor = SystemColors.ControlText;
}
}
else
{
this.revocationcodeField.Text = authenticator.SteamData;
}
}
/// <summary>
/// Create a new SteamClient
/// </summary>
public SteamClient(SteamAuthenticator auth, string session = null)
{
this.Authenticator = auth;
this.Session = new SteamSession(session);
if (this.Session.Confirmations != null)
{
if (this.IsLoggedIn() == false)
{
this.Session.Confirmations = null;
}
else
{
Task.Factory.StartNew(() =>
{
Refresh();
PollConfirmations(this.Session.Confirmations);
});
}
}
}
/// <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>
/// Import a file containing authenticators in the KeyUriFormat. The file might be plain text, encrypted zip or encrypted pgp.
/// </summary>
/// <param name="parent">parent Form</param>
/// <param name="file">file name to import</param>
/// <returns>list of imported authenticators</returns>
public static List<WinAuthAuthenticator> ImportAuthenticators(Form parent, string file)
{
List<WinAuthAuthenticator> authenticators = new List<WinAuthAuthenticator>();
string password = null;
string pgpKey = null;
StringBuilder lines = new StringBuilder();
bool retry;
do
{
retry = false;
lines.Length = 0;
// open the zip file
if (string.Compare(Path.GetExtension(file), ".zip", true) == 0)
{
using (var fs = new FileStream(file, FileMode.Open, FileAccess.Read))
{
ZipFile zip = null;
try
{
zip = new ZipFile(fs);
if (string.IsNullOrEmpty(password) == false)
{
zip.Password = password;
}
byte[] buffer = new byte[4096];
foreach (ZipEntry entry in zip)
{
if (entry.IsFile == false || string.Compare(Path.GetExtension(entry.Name), ".txt", true) != 0)
{
continue;
}
// read file out
Stream zs = zip.GetInputStream(entry);
using (var ms = new MemoryStream())
{
StreamUtils.Copy(zs, ms, buffer);
// get as string and append
ms.Seek(0, SeekOrigin.Begin);
using (var sr = new StreamReader(ms))
{
lines.Append(sr.ReadToEnd()).Append(Environment.NewLine);
}
}
}
}
catch (ZipException ex)
{
if (ex.Message.IndexOf("password") != -1)
{
// already have a password
if (string.IsNullOrEmpty(password) == false)
{
WinAuthForm.ErrorDialog(parent, strings.InvalidPassword, ex.InnerException, MessageBoxButtons.OK);
}
// need password
GetPasswordForm form = new GetPasswordForm();
if (form.ShowDialog(parent) == DialogResult.Cancel)
{
return null;
}
password = form.Password;
retry = true;
continue;
}
throw;
}
finally
{
if (zip != null)
{
zip.IsStreamOwner = true;
zip.Close();
}
}
}
}
else if (string.Compare(Path.GetExtension(file), ".pgp", true) == 0)
{
string encoded = File.ReadAllText(file);
if (string.IsNullOrEmpty(pgpKey) == true)
{
// need password
GetPGPKeyForm form = new GetPGPKeyForm();
if (form.ShowDialog(parent) == DialogResult.Cancel)
{
return null;
}
pgpKey = form.PGPKey;
password = form.Password;
retry = true;
continue;
}
try
{
string line = PGPDecrypt(encoded, pgpKey, password);
lines.Append(line);
}
catch (Exception ex)
{
WinAuthForm.ErrorDialog(parent, strings.InvalidPassword, ex.InnerException, MessageBoxButtons.OK);
pgpKey = null;
password = null;
retry = true;
continue;
}
}
else // read a plain text file
{
lines.Append(File.ReadAllText(file));
}
} while (retry);
int linenumber = 0;
try
{
using (var sr = new StringReader(lines.ToString()))
{
string line;
while ((line = sr.ReadLine()) != null)
{
linenumber++;
// ignore blank lines or comments
line = line.Trim();
if (line.Length == 0 || line.IndexOf("#") == 0)
{
continue;
}
// parse and validate URI
var uri = new Uri(line);
// we only support "otpauth"
if (uri.Scheme != "otpauth")
{
throw new ApplicationException("Import only supports otpauth://");
}
// we only support totp (not hotp)
if (uri.Host != "totp" && uri.Host != "hotp")
{
throw new ApplicationException("Import only supports otpauth://totp/ or otpauth://hotp/");
}
// get the label and optional issuer
string issuer = string.Empty;
string label = (string.IsNullOrEmpty(uri.LocalPath) == false ? uri.LocalPath.Substring(1) : string.Empty); // skip past initial /
int p = label.IndexOf(":");
if (p != -1)
{
issuer = label.Substring(0, p);
label = label.Substring(p + 1);
}
// + aren't decoded
label = label.Replace("+", " ");
var query = HttpUtility.ParseQueryString(uri.Query);
string secret = query["secret"];
if (string.IsNullOrEmpty(secret) == true)
{
throw new ApplicationException("Authenticator does not contain secret");
}
string counter = query["counter"];
if (uri.Host == "hotp" && string.IsNullOrEmpty(counter) == true)
{
throw new ApplicationException("HOTP authenticator should have a counter");
}
WinAuthAuthenticator importedAuthenticator = new WinAuthAuthenticator();
importedAuthenticator.AutoRefresh = false;
//
Authenticator auth;
if (string.Compare(issuer, "BattleNet", true) == 0)
{
string serial = query["serial"];
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();
//char[] decoded = Base32.getInstance().Decode(secret).Select(c => Convert.ToChar(c)).ToArray(); // this is hex string values
//string hex = new string(decoded);
//((BattleNetAuthenticator)auth).SecretKey = Authenticator.StringToByteArray(hex);
((BattleNetAuthenticator)auth).SecretKey = Base32.getInstance().Decode(secret);
((BattleNetAuthenticator)auth).Serial = serial;
issuer = string.Empty;
}
else if (string.Compare(issuer, "Steam", true) == 0)
{
auth = new SteamAuthenticator();
((SteamAuthenticator)auth).SecretKey = Base32.getInstance().Decode(secret);
((SteamAuthenticator)auth).Serial = string.Empty;
((SteamAuthenticator)auth).DeviceId = string.Empty;
((SteamAuthenticator)auth).RevocationCode = string.Empty;
issuer = string.Empty;
}
else if (uri.Host == "hotp")
{
auth = new HOTPAuthenticator();
((HOTPAuthenticator)auth).SecretKey = Base32.getInstance().Decode(secret);
((HOTPAuthenticator)auth).Counter = int.Parse(counter);
if (string.IsNullOrEmpty(issuer) == false)
{
auth.Issuer = issuer;
}
}
else // if (string.Compare(issuer, "Google", true) == 0)
{
auth = new GoogleAuthenticator();
((GoogleAuthenticator)auth).Enroll(secret);
if (string.Compare(issuer, "Google", true) == 0)
{
issuer = string.Empty;
}
else if (string.IsNullOrEmpty(issuer) == false)
{
auth.Issuer = issuer;
}
}
//
int digits = 0;
int.TryParse(query["digits"], out digits);
if (digits != 0)
{
auth.CodeDigits = digits;
}
//
if (label.Length != 0)
{
importedAuthenticator.Name = (issuer.Length != 0 ? issuer + " (" + label + ")" : label);
}
else if (issuer.Length != 0)
{
importedAuthenticator.Name = issuer;
}
else
{
importedAuthenticator.Name = "Imported";
}
//
importedAuthenticator.AuthenticatorData = auth;
// set the icon
string icon = query["icon"];
if (string.IsNullOrEmpty(icon) == false)
{
if (icon.StartsWith("base64:") == true)
{
string b64 = Convert.ToBase64String(Base32.getInstance().Decode(icon.Substring(7)));
importedAuthenticator.Skin = "base64:" + b64;
}
else
{
importedAuthenticator.Skin = icon + "Icon.png";
}
}
// sync
importedAuthenticator.Sync();
authenticators.Add(importedAuthenticator);
}
}
return authenticators;
}
catch (UriFormatException ex)
{
throw new ImportException(string.Format(strings.ImportInvalidUri, linenumber), ex);
}
catch (Exception ex)
{
throw new ImportException(string.Format(strings.ImportError, linenumber, ex.Message), ex);
}
}
/// <summary>
/// Import an authenticator from the uuid and steamguard files
/// </summary>
/// <returns>true if successful</returns>
private bool ImportSteamGuard()
{
var uuid = importUuid.Text.Trim();
if (uuid.Length == 0)
{
WinAuthForm.ErrorDialog(this, "Please enter the contents of the steam.uuid.xml file or your DeviceId");
return(false);
}
var steamguard = importSteamguard.Text.Trim();
if (steamguard.Length == 0)
{
WinAuthForm.ErrorDialog(this, "Please enter the contents of your SteamGuard file");
return(false);
}
// check the deviceid
string deviceId;
if (uuid.IndexOf("?xml") != -1)
{
try
{
var doc = new XmlDocument();
doc.LoadXml(uuid);
var node = doc.SelectSingleNode("//string[@name='uuidKey']");
if (node == null)
{
WinAuthForm.ErrorDialog(this, "Cannot find uuidKey in xml");
return(false);
}
deviceId = node.InnerText;
}
catch (Exception ex)
{
WinAuthForm.ErrorDialog(this, "Invalid uuid xml: " + ex.Message);
return(false);
}
}
else
{
deviceId = uuid;
}
if (string.IsNullOrEmpty(deviceId) || Regex.IsMatch(deviceId, @"android:[0-9abcdef-]+",
RegexOptions.Singleline | RegexOptions.IgnoreCase) == false)
{
WinAuthForm.ErrorDialog(this, "Invalid deviceid, expecting \"android:NNNN...\"");
return(false);
}
// check the steamguard
byte[] secret;
string serial;
try
{
var json = JObject.Parse(steamguard);
var node = json.SelectToken("shared_secret");
if (node == null)
{
throw new ApplicationException("no shared_secret");
}
secret = Convert.FromBase64String(node.Value <string>());
node = json.SelectToken("serial_number");
if (node == null)
{
throw new ApplicationException("no serial_number");
}
serial = node.Value <string>();
}
catch (Exception ex)
{
WinAuthForm.ErrorDialog(this, "Invalid SteamGuard JSON contents: " + ex.Message);
return(false);
}
var auth = new SteamAuthenticator();
auth.SecretKey = secret;
auth.Serial = serial;
auth.SteamData = steamguard;
auth.DeviceId = deviceId;
Authenticator.AuthenticatorData = auth;
return(true);
}
/// <summary>
/// Import the selected SDA account
/// </summary>
/// <returns>true if successful</returns>
private bool ImportSDA()
{
var entry = this.importSDAList.SelectedItem as ImportedSDAEntry;
if (entry == null)
{
WinAuthForm.ErrorDialog(this, "Please load and select a Steam account");
return false;
}
SteamAuthenticator auth = new SteamAuthenticator();
var token = JObject.Parse(entry.json);
foreach (var prop in token.Root.Children().ToList())
{
var child = token.SelectToken(prop.Path);
string lkey = prop.Path.ToLower();
if (lkey == "fully_enrolled" || lkey == "session")
{
prop.Remove();
}
else if (lkey == "device_id")
{
auth.DeviceId = child.Value<string>();
prop.Remove();
}
else if (lkey == "serial_number")
{
auth.Serial = child.Value<string>();
}
else if (lkey == "account_name")
{
if (this.nameField.Text.Length == 0)
{
this.nameField.Text = "Steam (" + child.Value<string>() + ")";
}
}
else if (lkey == "shared_secret")
{
auth.SecretKey = Convert.FromBase64String(child.Value<string>());
}
}
auth.SteamData = token.ToString(Newtonsoft.Json.Formatting.None);
this.Authenticator.AuthenticatorData = auth;
return true;
}
/// <summary>
/// Import an authenticator from the uuid and steamguard files
/// </summary>
/// <returns>true if successful</returns>
private bool ImportSteamGuard()
{
string uuid = importUuid.Text.Trim();
if (uuid.Length == 0)
{
WinAuthForm.ErrorDialog(this, "Please enter the contents of the steam.uuid.xml file or your DeviceId");
return false;
}
string steamguard = this.importSteamguard.Text.Trim();
if (steamguard.Length == 0)
{
WinAuthForm.ErrorDialog(this, "Please enter the contents of your SteamGuard file");
return false;
}
// check the deviceid
string deviceId;
if (uuid.IndexOf("?xml") != -1)
{
try
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(uuid);
var node = doc.SelectSingleNode("//string[@name='uuidKey']");
if (node == null)
{
WinAuthForm.ErrorDialog(this, "Cannot find uuidKey in xml");
return false;
}
deviceId = node.InnerText;
}
catch (Exception ex)
{
WinAuthForm.ErrorDialog(this, "Invalid uuid xml: " + ex.Message);
return false;
}
}
else
{
deviceId = uuid;
}
if (string.IsNullOrEmpty(deviceId) || Regex.IsMatch(deviceId, @"android:[0-9abcdef-]+", RegexOptions.Singleline | RegexOptions.IgnoreCase) == false)
{
WinAuthForm.ErrorDialog(this, "Invalid deviceid, expecting \"android:NNNN...\"");
return false;
}
// check the steamguard
byte[] secret;
string serial;
try
{
var json = JObject.Parse(steamguard);
var node = json.SelectToken("shared_secret");
if (node == null)
{
throw new ApplicationException("no shared_secret");
}
secret = Convert.FromBase64String(node.Value<string>());
node = json.SelectToken("serial_number");
if (node == null)
{
throw new ApplicationException("no serial_number");
}
serial = node.Value<string>();
}
catch (Exception ex)
{
WinAuthForm.ErrorDialog(this, "Invalid SteamGuard JSON contents: " + ex.Message);
return false;
}
SteamAuthenticator auth = new SteamAuthenticator();
auth.SecretKey = secret;
auth.Serial = serial;
auth.SteamData = steamguard;
auth.DeviceId = deviceId;
this.Authenticator.AuthenticatorData = auth;
return true;
}
/// <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;
}
}
}
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;
}
}
// 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.CodeDigits = digits;
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;
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;
}