// Static Methods
/// <summary>
/// Creates a new <see cref="ISecurityProvider"/> based on the settings in the config file.
/// </summary>
/// <param name="username">Username of the user for whom the <see cref="ISecurityProvider"/> is to be created.</param>
/// <returns>An object that implements <see cref="ISecurityProvider"/>.</returns>
public static ISecurityProvider CreateProvider(string username)
{
// Initialize the username.
if (string.IsNullOrEmpty(username))
{
username = Thread.CurrentPrincipal.Identity.Name;
}
// If an application is being launched from an installer it will have the NT AUTHORITY\System Identity which
// will not have available user information - so we pickup username from Environment instead
if (username.StartsWith("NT AUTHORITY\\", StringComparison.OrdinalIgnoreCase))
{
username = Environment.UserDomainName + "\\" + Environment.UserName;
}
// Instantiate the provider.
// ReSharper disable once AssignNullToNotNullAttribute
ISecurityProvider provider = Activator.CreateInstance(Type.GetType(s_providerType), username) as ISecurityProvider;
if ((object)provider == null)
{
throw new InvalidOperationException(string.Format("Failed to acquire security provider from '{0}'. Specified class does not implement ISecurityProvider.", s_providerType));
}
// Initialize the provider.
provider.Initialize();
// Return initialized provider.
return(provider);
}