X509StoreFactory.cs :  » PDF » iTextSharp » Org » BouncyCastle » X509 » Store » C# / CSharp Open Source

using System;
using System.Collections;
using System.Globalization;

namespace Org.BouncyCastle.X509.Store{
  public sealed class X509StoreFactory
  {
    private X509StoreFactory()
    {
    }

    public static IX509Store Create(
      string          type,
      IX509StoreParameters  parameters)
    {
      if (type == null)
        throw new ArgumentNullException("type");

      string[] parts = type.ToUpper(CultureInfo.InvariantCulture).Split('/');

      if (parts.Length < 2)
        throw new ArgumentException("type");

      if (parts[1] != "COLLECTION")
        throw new NoSuchStoreException("X.509 store type '" + type + "' not available.");

      X509CollectionStoreParameters p = (X509CollectionStoreParameters) parameters;
      ICollection coll = p.GetCollection();

      switch (parts[0])
      {
        case "ATTRIBUTECERTIFICATE":
          checkCorrectType(coll, typeof(IX509AttributeCertificate));
          break;
        case "CERTIFICATE":
          checkCorrectType(coll, typeof(X509Certificate));
          break;
        case "CERTIFICATEPAIR":
          checkCorrectType(coll, typeof(X509CertificatePair));
          break;
        case "CRL":
          checkCorrectType(coll, typeof(X509Crl));
          break;
        default:
          throw new NoSuchStoreException("X.509 store type '" + type + "' not available.");
      }

      return new X509CollectionStore(coll);
    }

    private static void checkCorrectType(ICollection coll, Type t)
    {
      foreach (object o in coll)
      {
        if (!t.IsInstanceOfType(o))
          throw new InvalidCastException("Can't cast object to type: " + t.FullName);
      }
    }
  }
}