HttpClientCertificate.cs :  » 2.6.4-mono-.net-core » System.Web » System » Web » C# / CSharp Open Source

//
// System.Web.HttpClientCertificate class
//
// Author:
//  Sebastien Pouliot  <sebastien@ximian.com>
//
// Copyright (C) 2005-2009 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.Collections.Specialized;
using System.Globalization;
using System.Security.Permissions;
using System.Web.Util;

namespace System.Web{
  // CAS
  [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  public class HttpClientCertificate : NameValueCollection
  {
    HttpWorkerRequest hwr;
    int flags;
    DateTime from;
    DateTime until;

    internal HttpClientCertificate (HttpWorkerRequest hwr)
    {
      // we don't check hwr for null so we end up throwing a 
      // NullReferenceException just like MS implementation
      // if the public ctor for HttpRequest is used
      this.hwr = hwr;
      flags = GetIntNoPresense ("CERT_FLAGS");
      if (IsPresent) {
        from = hwr.GetClientCertificateValidFrom ();
        until = hwr.GetClientCertificateValidUntil ();
      } else {
        from = DateTime.Now;
        until = from;
      }
    }

    public byte[] BinaryIssuer {
      get { return hwr.GetClientCertificateBinaryIssuer (); }
    }

    public int CertEncoding {
      get { return hwr.GetClientCertificateEncoding (); }
    }

    public byte[] Certificate {
      get { return hwr.GetClientCertificate (); }
    }

    public string Cookie {
      get { return GetString ("CERT_COOKIE"); }
    }

    public int Flags {
      get { return flags; }
    }

    public bool IsPresent {
      get { return ((flags & 0x01) == 0x01); }
    }

    public string Issuer {
      get { return GetString ("CERT_ISSUER"); }
    }

    public bool IsValid {
      get {
        if (!IsPresent)
          return true; // lame but true
        // low on details
        return ((flags & 0x02) == 0x00);
      }
    }

    public int KeySize {
      get { return GetInt ("CERT_KEYSIZE"); }
    }

    public byte[] PublicKey {
      get { return hwr.GetClientCertificatePublicKey (); }
    }

    public int SecretKeySize {
      get { return GetInt ("CERT_SECRETKEYSIZE"); }
    }

    public string SerialNumber {
      get { return GetString ("CERT_SERIALNUMBER"); }
    }

    public string ServerIssuer {
      get { return GetString ("CERT_SERVER_ISSUER"); }
    }

    public string ServerSubject {
      get { return GetString ("CERT_SERVER_SUBJECT"); }
    }

    public string Subject {
      get { return GetString ("CERT_SUBJECT"); }
    }

    public DateTime ValidFrom {
      get { return from; }
    }

    public DateTime ValidUntil {
      get { return until; }
    }


    // LAMESPEC: this doesn't return values added with Add(string,string)
    public override string Get (string field)
    {
      switch (field) {
      default:
        return String.Empty;
      }
    }

    // stuff
    int GetInt (string variable)
    {
      if (!IsPresent)
        return 0;

      return GetIntNoPresense (variable);
    }

    int GetIntNoPresense (string variable)
    {
      string s = hwr.GetServerVariable (variable);
      if (s == null)
        return 0;

      try {
        return Int32.Parse (s, Helpers.InvariantCulture);
      }
      catch {
        return 0;
      }
    }

    string GetString (string variable)
    {
      if (!IsPresent)
        return String.Empty;

      string s = hwr.GetServerVariable (variable);
      return (s == null) ? String.Empty : s;
    }
  }
}