public override void Login(string password, bool rememberSession)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
// todo: remember sessions
MainForm.SetSignInStatus("Connecting to ClassiCube.net...");
// download the login page
string loginPage = DownloadString(LoginUri, ClassiCubeNet);
Debug.WriteLine(loginPage);
// See if we're already logged in
if (LoggedInAs.IsMatch(loginPage))
{
// todo
}
Match csrfTokenMatch = CsrfToken.Match(loginPage);
if (!csrfTokenMatch.Success)
{
// todo: handle ClassiCube derping
}
string csrfToken = csrfTokenMatch.Groups[1].Value;
string loginString = String.Format("csrf_token={0}&username={1}&password={2}",
Uri.EscapeDataString(csrfToken),
Uri.EscapeDataString(LoginUsername),
Uri.EscapeDataString(password));
if (rememberSession)
{
loginString += "&remember_me=y";
}
string loginResponse = UploadString(LoginUri, LoginUri, loginString);
// See if now we're logged in
if (loginResponse.Contains(LoginFailedMessage))
{
Status = LoginResult.WrongUsernameOrPass;
}
else if (LoggedInAs.IsMatch(loginResponse))
{
MinecraftUsername = LoggedInAs.Match(loginResponse).Groups[1].Value;
// todo: get play session ID
Status = LoginResult.Success;
// todo: save cookie
}
else
{
MainForm.Log("CC.Login: Something went wrong: " + loginResponse);
Status = LoginResult.UnrecognizedResponse;
}
}
// Takes AES-256 encrypted, base-64 encoded password. Returns true if decryption succeeded.
public static string DecryptPassword(string encryptedString)
{
if (encryptedString == null)
{
throw new ArgumentNullException("encryptedString");
}
try {
byte[] bytesToDecrypt = Convert.FromBase64String(encryptedString);
// extract the prepended IV, and
byte[] vector = new byte[IVSize];
Buffer.BlockCopy(bytesToDecrypt, 0, vector, 0, IVSize);
ICryptoTransform transform = Cipher.CreateDecryptor(Key, vector);
// decrypt the data
MemoryStream stream = new MemoryStream();
using (CryptoStream cs = new CryptoStream(stream, transform, CryptoStreamMode.Write)) {
cs.Write(bytesToDecrypt, IVSize, bytesToDecrypt.Length - IVSize);
}
byte[] decryptedBytes = stream.ToArray();
// extract password from decrypted data
string decryptedPassword = Encoding.UTF8.GetString(stream.ToArray(),
ChecksumSize,
decryptedBytes.Length - ChecksumSize);
// calculate expected/actual checksums
ushort expectedChecksum = BitConverter.ToUInt16(decryptedBytes, 0);
ushort actualChecksum = ComputeChecksum(decryptedBytes,
ChecksumSize,
decryptedBytes.Length - ChecksumSize);
if (expectedChecksum == actualChecksum)
{
// checksums match, all good
return(decryptedPassword);
}
else
{
MainForm.Log("DecryptPassword: Decryption did not succeed; prefix mismatch.");
}
} catch (Exception ex) {
MainForm.Log("DecryptPassword: Error while decrypting: " + ex);
}
return("");
}
// Handle saved minecraft.net sessions
bool LoadCookie(bool remember)
{
if (File.Exists(Paths.CookieContainerFile))
{
if (remember)
{
// load a saved session
BinaryFormatter formatter = new BinaryFormatter();
using (Stream s = File.OpenRead(Paths.CookieContainerFile)) {
CookieJar = (CookieContainer)formatter.Deserialize(s);
}
CookieCollection cookies = CookieJar.GetCookies(new Uri(MinecraftNet));
foreach (Cookie c in cookies)
{
// look for a cookie that corresponds to the current minecraft username
int start = c.Value.IndexOf("username%3A" + MinecraftUsername,
StringComparison.OrdinalIgnoreCase);
if (start != -1)
{
MainForm.Log("MC.LoadCookie: Loaded saved session for " + MinecraftUsername);
return(true);
}
}
// if saved session was not for the current username, discard it
MainForm.Log("MC.LoadCookie: Discarded a saved session (username mismatch)");
ResetCookies();
}
else
{
// discard a saved session
MainForm.Log("MC.LoadCookie: Discarded a saved session");
ResetCookies();
}
}
else
{
// no session saved
ResetCookies();
}
return(false);
}
public void LoadAccounts()
{
storedAccounts.Clear();
string[] fileNames = Directory.GetFiles(Paths.DataDirectory, "*.account");
foreach (string fileName in fileNames)
{
try {
SettingsFile sf = new SettingsFile();
sf.Load(fileName);
SignInAccount newAccount = new SignInAccount {
SignInUsername = sf.GetString("SignInUsername", ""),
PlayerName = sf.GetString("PlayerName", ""),
Password = sf.GetString("Password", ""),
LastUrl = sf.GetString("LastUrl", "")
};
if (newAccount.Password.Length > 0)
{
newAccount.Password = PasswordSecurity.DecryptPassword(newAccount.Password);
}
string tickString = sf.GetString("SignInDate", "0");
long ticks;
if (Int64.TryParse(tickString, out ticks) && ticks > DateTime.MinValue.Ticks &&
ticks <= DateTime.MaxValue.Ticks)
{
newAccount.SignInDate = new DateTime(ticks);
}
else
{
newAccount.SignInDate = DateTime.MinValue;
}
AddAccount(newAccount);
} catch (Exception ex) {
MainForm.Log("AccountManager.LoadAccounts: " + ex);
}
}
SaveAllAccounts();
}
public override void Login(string password, bool rememberSession)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
bool restoredSession = LoadCookie(rememberSession);
MainForm.SetSignInStatus("Connecting to Minecraft.net...");
// check if cancel is needed
if (cancel)
{
Status = LoginResult.Canceled;
cancel = false;
return;
}
// download the login page
string loginPage = DownloadString(LoginSecureUri, MinecraftNet);
// See if we're already logged in
if (LoggedInAs.IsMatch(loginPage))
{
string loggedInUsername = LoggedInAs.Match(loginPage).Groups[1].Value;
if (rememberSession && PlaySessionCookie != null &&
MinecraftUsername.Equals(loggedInUsername, StringComparison.OrdinalIgnoreCase))
{
// If player is already logged in with the right account: reuse a previous session
MinecraftUsername = loggedInUsername;
MainForm.Log("MC.Login: Restored session for " + MinecraftUsername);
Status = LoginResult.Success;
SaveCookie();
return;
}
else
{
// If we're not supposed to reuse session, if old username is different,
// or if there is no play session cookie set - relog
MainForm.SetSignInStatus("Switching accounts...");
DownloadString(LogoutUri, MinecraftNet);
loginPage = DownloadString(LoginSecureUri, LogoutUri);
}
}
// Extract authenticityToken from the login page
Match authTokenMatch = LoginAuthToken.Match(loginPage);
if (!authTokenMatch.Success)
{
if (restoredSession)
{
// restoring session failed; log out and retry
DownloadString(LogoutUri, MinecraftNet);
ResetCookies();
MainForm.Log("MC.Login: Unrecognized page; retrying");
Login(password, rememberSession);
return;
}
else
{
// something unexpected happened, panic!
MainForm.Log("MC.Login: Unrecognized page: " + loginPage);
Status = LoginResult.UnrecognizedResponse;
}
return;
}
string authToken = authTokenMatch.Groups[1].Value;
// Build up form data
string loginString = String.Format("username={0}&password={1}&authenticityToken={2}",
Uri.EscapeDataString(LoginUsername),
Uri.EscapeDataString(password),
Uri.EscapeDataString(authToken));
if (rememberSession)
{
loginString += "&remember=true";
}
// check if cancel is needed
if (cancel)
{
Status = LoginResult.Canceled;
cancel = false;
return;
}
// POST to the login form
MainForm.SetSignInStatus("Sending login information...");
string loginResponse = UploadString(LoginSecureUri, LoginSecureUri, loginString);
// check if cancel is needed
if (cancel)
{
Status = LoginResult.Canceled;
cancel = false;
return;
}
// Check the response
if (loginResponse.Contains(WrongUsernameOrPasswordMessage))
{
Status = LoginResult.WrongUsernameOrPass;
}
else if (LoggedInAs.IsMatch(loginResponse))
{
MinecraftUsername = LoggedInAs.Match(loginResponse).Groups[1].Value;
if (PlaySessionCookie == null)
{
CookieCollection cookies = CookieJar.GetCookies(new Uri(MinecraftNet));
MainForm.Log("MC.Login: No play session. There were " + cookies.Count + " cookies served:");
foreach (Cookie cookie in cookies)
{
MainForm.Log(" " + cookie);
}
Status = LoginResult.NoPlaySession;
return;
}
Status = LoginResult.Success;
SaveCookie();
}
else if (loginResponse.Contains(MigratedAccountMessage))
{
Status = LoginResult.MigratedAccount;
}
else
{
MainForm.Log("MC.Login: Unrecognized response: " + loginResponse);
Status = LoginResult.UnrecognizedResponse;
}
}