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                 static readonly Guid id = new Guid ("3a7b3a26-0dbd-4572-a5b8-fdce766bf0dd");
  44
  45                 public override Guid ID {
  46                         get { return id; }
  47                 }
  48
  49                 public override string Name {
  50                         get { return "dotnet"; }
  51                 }
  52
  53                 public override bool SupportsSslStream {
  54                         get { return true; }
  55                 }
  56
  57                 public override bool SupportsConnectionInfo {
  58                         get { return false; }
  59                 }
  60
  61                 public override bool SupportsMonoExtensions {
  62                         get { return false; }
  63                 }
  64
  65                 internal override bool SupportsTlsContext {
  66                         get { return false; }
  67                 }
  68
  69                 public override SslProtocols SupportedProtocols {
  70                         get { return (SslProtocols)ServicePointManager.SecurityProtocol; }
  71                 }
  72
  73                 public override IMonoSslStream CreateSslStream (
  74                         Stream innerStream, bool leaveInnerStreamOpen,
  75                         MonoTlsSettings settings = null)
  76                 {
  77                         if (settings != null)
  78                                 throw new NotSupportedException ("Mono-specific API Extensions not available.");
  79
  80                         RemoteCertificateValidationCallback validation_callback = null;
  81                         LocalCertificateSelectionCallback selection_callback = null;
  82
  83                         if (settings != null) {
  84                                 validation_callback = ConvertCallback (settings.RemoteCertificateValidationCallback);
  85                                 selection_callback = ConvertCallback (settings.ClientCertificateSelectionCallback);
  86                         }
  87
  88                         return new DotNetSslStreamImpl (innerStream, leaveInnerStreamOpen, this, validation_callback, selection_callback);
  89                 }
  90
  91                 internal override IMonoTlsContext CreateTlsContext (
  92                         string hostname, bool serverMode, TlsProtocols protocolFlags,
  93                         X509Certificate serverCertificate, X509CertificateCollection clientCertificates,
  94                         bool remoteCertRequired, MonoEncryptionPolicy encryptionPolicy,
  95                         MonoTlsSettings settings)
  96                 {
  97                         throw new NotSupportedException ();
  98                 }
  99
 100                 internal static RemoteCertificateValidationCallback ConvertCallback (MonoRemoteCertificateValidationCallback callback)
 101                 {
 102                         if (callback == null)
 103                                 return null;
 104
 105                         return (s, c, ch, e) => callback (null, c, ch, (MonoSslPolicyErrors)e);
 106                 }
 107
 108                 internal static LocalCertificateSelectionCallback ConvertCallback (MonoLocalCertificateSelectionCallback callback)
 109                 {
 110                         if (callback == null)
 111                                 return null;
 112
 113                         return (s, t, lc, rc, ai) => callback (t, lc, rc, ai);
 114                 }
 115
 116         }
 117 }
 118