mcs/class/Mono.Security.Providers.DotNet/Mono.Security.Providers.DotNet/DotNetTlsProvider.cs

   1 //
   2 // MonoDefaultTlsProvider.cs
   3 //
   4 // Author:
   5 //       Martin Baulig <martin.baulig@xamarin.com>
   6 //
   7 // Copyright (c) 2015 Xamarin, Inc.
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining a copy
  10 // of this software and associated documentation files (the "Software"), to deal
  11 // in the Software without restriction, including without limitation the rights
  12 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13 // copies of the Software, and to permit persons to whom the Software is
  14 // furnished to do so, subject to the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be included in
  17 // all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25 // THE SOFTWARE.
  26 using System;
  27 using System.IO;
  28 using System.Net;
  29 using System.Net.Security;
  30 using System.Security.Authentication;
  31 using System.Security.Cryptography.X509Certificates;
  32 using Mono.Security.Interface;
  33
  34 namespace Mono.Security.Providers.DotNet
  35 {
  36         /*
  37          * This provider only uses the public .NET APIs from System.dll.
  38          *
  39          * It is primarily intended for testing.
  40          */
  41         public class DotNetTlsProvider : MonoTlsProvider
  42         {
  43                 public override bool SupportsSslStream {
  44                         get { return true; }
  45                 }
  46
  47                 public override bool SupportsMonoExtensions {
  48                         get { return false; }
  49                 }
  50
  51                 public override bool SupportsTlsContext {
  52                         get { return false; }
  53                 }
  54
  55                 public override SslProtocols SupportedProtocols {
  56                         get { return (SslProtocols)ServicePointManager.SecurityProtocol; }
  57                 }
  58
  59                 public override MonoSslStream CreateSslStream (
  60                         Stream innerStream, bool leaveInnerStreamOpen,
  61                         MonoTlsSettings settings = null)
  62                 {
  63                         if (settings != null)
  64                                 throw new NotSupportedException ("Mono-specific API Extensions not available.");
  65
  66                         RemoteCertificateValidationCallback validation_callback = null;
  67                         LocalCertificateSelectionCallback selection_callback = null;
  68
  69                         if (settings != null) {
  70                                 validation_callback = ConvertCallback (settings.RemoteCertificateValidationCallback);
  71                                 selection_callback = ConvertCallback (settings.ClientCertificateSelectionCallback);
  72                         }
  73
  74                         return new DotNetSslStreamImpl (innerStream, leaveInnerStreamOpen, validation_callback, selection_callback);
  75                 }
  76
  77                 public override IMonoTlsContext CreateTlsContext (
  78                         string hostname, bool serverMode, TlsProtocols protocolFlags,
  79                         X509Certificate serverCertificate, X509CertificateCollection clientCertificates,
  80                         bool remoteCertRequired, MonoEncryptionPolicy encryptionPolicy,
  81                         MonoTlsSettings settings)
  82                 {
  83                         throw new NotSupportedException ();
  84                 }
  85
  86                 internal static RemoteCertificateValidationCallback ConvertCallback (MonoRemoteCertificateValidationCallback callback)
  87                 {
  88                         if (callback == null)
  89                                 return null;
  90
  91                         return (s, c, ch, e) => callback (null, c, ch, (MonoSslPolicyErrors)e);
  92                 }
  93
  94                 internal static LocalCertificateSelectionCallback ConvertCallback (MonoLocalCertificateSelectionCallback callback)
  95                 {
  96                         if (callback == null)
  97                                 return null;
  98
  99                         return (s, t, lc, rc, ai) => callback (t, lc, rc, ai);
 100                 }
 101
 102         }
 103 }
 104