X509Certificate20.cs :  » 2.6.4-mono-.net-core » System.Security » System » Security » Cryptography » X509Certificates » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Security 
System.Security » System » Security » Cryptography » X509Certificates » X509Certificate20.cs
//
// X509Certificate20.cs: Partial class to handle new 2.0-only stuff
//
// Author:
//  Sebastien Pouliot  <sebastien@ximian.com>
//
// (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
// Copyright (C) 2004-2006,2008 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//


using System.Runtime.InteropServices;
using System.Security.Permissions;
using System.Text;

using Mono.Security;
using Mono.Security.X509;

using System.Runtime.Serialization;

namespace System.Security.Cryptography.X509Certificates{

  [ComVisible (true)]
  [MonoTODO ("X509ContentType.SerializedCert isn't supported (anywhere in the class)")]
#if MOONLIGHT
  public partial class X509Certificate {
#else
  public partial class X509Certificate : IDeserializationCallback, ISerializable {
#endif
    private string issuer_name;
    private string subject_name;


    public X509Certificate ()
    {
      // this allows an empty certificate to exists
    }

    public X509Certificate (byte[] rawData, string password)
    {
      Import (rawData, password, X509KeyStorageFlags.DefaultKeySet);
    }

#if !MOONLIGHT
    [MonoTODO ("SecureString support is incomplete")]
    public X509Certificate (byte[] rawData, SecureString password)
    {
      Import (rawData, password, X509KeyStorageFlags.DefaultKeySet);
    }
#endif

    public X509Certificate (byte[] rawData, string password, X509KeyStorageFlags keyStorageFlags)
    {
      Import (rawData, password, keyStorageFlags);
    }

#if !MOONLIGHT
    [MonoTODO ("SecureString support is incomplete")]
    public X509Certificate (byte[] rawData, SecureString password, X509KeyStorageFlags keyStorageFlags)
    {
      Import (rawData, password, keyStorageFlags);
    }
#endif

    public X509Certificate (string fileName)
    {
      Import (fileName, (string)null, X509KeyStorageFlags.DefaultKeySet);
    }

    public X509Certificate (string fileName, string password)
    {
      Import (fileName, password, X509KeyStorageFlags.DefaultKeySet);
    }

#if !MOONLIGHT
    [MonoTODO ("SecureString support is incomplete")]
    public X509Certificate (string fileName, SecureString password)
    {
      Import (fileName, password, X509KeyStorageFlags.DefaultKeySet);
    }
#endif

    public X509Certificate (string fileName, string password, X509KeyStorageFlags keyStorageFlags)
    {
      Import (fileName, password, keyStorageFlags);
    }

#if !MOONLIGHT
    [MonoTODO ("SecureString support is incomplete")]
    public X509Certificate (string fileName, SecureString password, X509KeyStorageFlags keyStorageFlags)
    {
      Import (fileName, password, keyStorageFlags);
    }
#endif

    public X509Certificate (SerializationInfo info, StreamingContext context)
    {
      byte[] raw = (byte[]) info.GetValue ("RawData", typeof (byte[]));
      Import (raw, (string)null, X509KeyStorageFlags.DefaultKeySet);
    }


    public string Issuer {
      get {
        if (x509 == null)
          throw new CryptographicException (Locale.GetText ("Certificate instance is empty."));

        if (issuer_name == null)
          issuer_name = X501.ToString (x509.GetIssuerName (), true, ", ", true);
        return issuer_name;
      }
    }

    public string Subject {
      get {
        if (x509 == null)
          throw new CryptographicException (Locale.GetText ("Certificate instance is empty."));

        if (subject_name == null)
          subject_name = X501.ToString (x509.GetSubjectName (), true, ", ", true);
        return subject_name;
      }
    }

    [ComVisible (false)]
    public IntPtr Handle {
      get { return IntPtr.Zero; }
    }


    [ComVisible (false)]
    public override bool Equals (object obj) 
    {
      X509Certificate x = (obj as X509Certificate);
      if (x != null)
        return this.Equals (x);
      return false;
    }

    [MonoTODO ("X509ContentType.Pfx/Pkcs12 and SerializedCert are not supported")]
    [ComVisible (false)]
    public virtual byte[] Export (X509ContentType contentType)
    {
      return Export (contentType, (byte[])null);
    }

    [MonoTODO ("X509ContentType.Pfx/Pkcs12 and SerializedCert are not supported")]
    [ComVisible (false)]
    public virtual byte[] Export (X509ContentType contentType, string password)
    {
      byte[] pwd = (password == null) ? null : Encoding.UTF8.GetBytes (password);
      return Export (contentType, pwd);
    }

#if !MOONLIGHT
    [MonoTODO ("X509ContentType.Pfx/Pkcs12 and SerializedCert are not supported. SecureString support is incomplete.")]
    public virtual byte[] Export (X509ContentType contentType, SecureString password)
    {
      byte[] pwd = (password == null) ? null : password.GetBuffer ();
      return Export (contentType, pwd);
    }
#endif

    internal byte[] Export (X509ContentType contentType, byte[] password)
    {
      if (x509 == null)
        throw new CryptographicException (Locale.GetText ("Certificate instance is empty."));

      try {
        switch (contentType) {
        case X509ContentType.Cert:
          return x509.RawData;
#if !MOONLIGHT
        case X509ContentType.Pfx: // this includes Pkcs12
          // TODO
          throw new NotSupportedException ();
        case X509ContentType.SerializedCert:
          // TODO
          throw new NotSupportedException ();
#endif
        default:
          string msg = Locale.GetText ("This certificate format '{0}' cannot be exported.", contentType);
          throw new CryptographicException (msg);
        }
      }
      finally {
        // protect password
        if (password != null)
          Array.Clear (password, 0, password.Length);
      }
    }

    [ComVisible (false)]
    public virtual void Import (byte[] rawData)
    {
      Import (rawData, (string)null, X509KeyStorageFlags.DefaultKeySet);
    }

    [MonoTODO ("missing KeyStorageFlags support")]
    [ComVisible (false)]
    public virtual void Import (byte[] rawData, string password, X509KeyStorageFlags keyStorageFlags)
    {
      Reset ();
      if (password == null) {
        try {
          x509 = new Mono.Security.X509.X509Certificate (rawData);
        }
        catch (Exception e) {
          try {
            PKCS12 pfx = new PKCS12 (rawData);
            if (pfx.Certificates.Count > 0)
              x509 = pfx.Certificates [0];
            else
              x509 = null;
          }
          catch {
            string msg = Locale.GetText ("Unable to decode certificate.");
            // inner exception is the original (not second) exception
            throw new CryptographicException (msg, e);
          }
        }
      } else {
        // try PKCS#12
        try {
          PKCS12 pfx = new PKCS12 (rawData, password);
          if (pfx.Certificates.Count > 0) {
            x509 = pfx.Certificates [0];
          } else {
            x509 = null;
          }
        }
        catch {
          // it's possible to supply a (unrequired/unusued) password
          // fix bug #79028
          x509 = new Mono.Security.X509.X509Certificate (rawData);
        }
      }
    }

#if !MOONLIGHT
    [MonoTODO ("SecureString support is incomplete")]
    public virtual void Import (byte[] rawData, SecureString password, X509KeyStorageFlags keyStorageFlags)
    {
      Import (rawData, (string)null, keyStorageFlags);
    }
#endif

    [ComVisible (false)]
    public virtual void Import (string fileName)
    {
      byte[] rawData = Load (fileName);
      Import (rawData, (string)null, X509KeyStorageFlags.DefaultKeySet);
    }

    [MonoTODO ("missing KeyStorageFlags support")]
    [ComVisible (false)]
    public virtual void Import (string fileName, string password, X509KeyStorageFlags keyStorageFlags)
    {
      byte[] rawData = Load (fileName);
      Import (rawData, password, keyStorageFlags);
    }

#if !MOONLIGHT
    [MonoTODO ("SecureString support is incomplete, missing KeyStorageFlags support")]
    public virtual void Import (string fileName, SecureString password, X509KeyStorageFlags keyStorageFlags)
    {
      byte[] rawData = Load (fileName);
      Import (rawData, (string)null, keyStorageFlags);
    }
#endif

#if !MOONLIGHT
    void IDeserializationCallback.OnDeserialization (object sender)
    {
    }

    void ISerializable.GetObjectData (SerializationInfo info, StreamingContext context)
    {
      // will throw a NRE if info is null (just like MS implementation)
      info.AddValue ("RawData", x509.RawData);
    }
#endif
    [ComVisible (false)]
    public virtual void Reset ()
    {
      x509 = null;
      issuer_name = null;
      subject_name = null;
      hideDates = false;
      cachedCertificateHash = null;
    }
  }
}
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