public async Task<TunesUser> VerifyUserCredentials()
{
TunesUser tunesUser = null;
Windows.Security.Credentials.PasswordVault vault = new Windows.Security.Credentials.PasswordVault();
try
{
await Task.Run(() =>
{
var userName = (string)Windows.Storage.ApplicationData.Current.RoamingSettings.Values["username"];
if (!string.IsNullOrEmpty(userName))
{
var passwordCredential = vault.Retrieve(PasswordVaultResourceName, userName);
if (passwordCredential != null)
{
tunesUser = this.User = new TunesUser
{
UserName = userName,
Password = vault.Retrieve(PasswordVaultResourceName, passwordCredential.UserName).Password,
UseSecureLogin = Windows.Storage.ApplicationData.Current.RoamingSettings.Values["usesecurelogin"] != null ? (bool)Windows.Storage.ApplicationData.Current.RoamingSettings.Values["usesecurelogin"] : false
};
}
}
});
}
catch { }
return tunesUser;
}
public async Task<TunesUser> SignInUser(string userName, string password, bool useSecureLogin)
{
TunesUser tunesUser = null;
if (!string.IsNullOrEmpty(userName) && !string.IsNullOrEmpty(password))
{
var client = this.GetHttpClient(useSecureLogin);
try
{
this.TokenResponse = await client.RequestResourceOwnerPasswordAsync(userName, password);
if (this.TokenResponse != null)
{
if (this.TokenResponse.IsError)
{
throw new UnauthorizedAccessException(this.m_strUnauthorizedAccessExceptionMessage);
}
Windows.Storage.ApplicationData.Current.RoamingSettings.Values["username"] = userName;
Windows.Storage.ApplicationData.Current.RoamingSettings.Values["usesecurelogin"] = useSecureLogin;
Windows.Security.Credentials.PasswordVault vault = new Windows.Security.Credentials.PasswordVault();
PasswordCredential passwordCredential = new PasswordCredential(PasswordVaultResourceName, userName, password);
vault.Add(passwordCredential);
if (passwordCredential != null)
{
tunesUser = this.User = new TunesUser
{
UserName = userName,
Password = vault.Retrieve(PasswordVaultResourceName, passwordCredential.UserName).Password,
UseSecureLogin = useSecureLogin
};
}
}
}
catch (UnauthorizedAccessException)
{
throw new UnauthorizedAccessException(this.m_strUnauthorizedAccessExceptionMessage);
}
catch (Exception exception)
{
NullReferenceException nullReferenceException = exception as NullReferenceException;
if (nullReferenceException != null)
{
//there could be a nullreference exception at account change when the login is encrypted.
throw new UnauthorizedAccessException(this.m_strEncryptedLoginException);
}
throw exception;
}
}
else
{
throw new UnauthorizedAccessException(this.m_strUnauthorizedAccessExceptionMessage);
}
return tunesUser;
}
