mcs/class/System/Mono.Net.Security/MonoTlsStream.cs

   1 //
   2 // MonoTlsStream.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
  27 #if SECURITY_DEP
  28 #if MONO_SECURITY_ALIAS
  29 extern alias MonoSecurity;
  30 #endif
  31
  32 #if MONO_SECURITY_ALIAS
  33 using MonoSecurity::Mono.Security.Interface;
  34 #else
  35 using Mono.Security.Interface;
  36 #endif
  37 using XX509CertificateCollection = System.Security.Cryptography.X509Certificates.X509CertificateCollection;
  38 #endif
  39
  40 using System;
  41 using System.IO;
  42 using System.Net;
  43 using System.Net.Sockets;
  44 using System.Net.Security;
  45 using System.Threading.Tasks;
  46 using System.Security.Authentication;
  47 using System.Security.Cryptography.X509Certificates;
  48 using System.Security.Principal;
  49 using System.Security.Cryptography;
  50
  51 namespace Mono.Net.Security
  52 {
  53         class MonoTlsStream
  54         {
  55                 readonly IMonoTlsProvider provider;
  56                 readonly HttpWebRequest request;
  57                 readonly NetworkStream networkStream;
  58
  59                 IMonoSslStream sslStream;
  60                 WebExceptionStatus status;
  61
  62                 internal HttpWebRequest Request {
  63                         get { return request; }
  64                 }
  65
  66                 internal IMonoSslStream SslStream {
  67                         get { return sslStream; }
  68                 }
  69
  70                 internal WebExceptionStatus ExceptionStatus {
  71                         get { return status; }
  72                 }
  73
  74                 internal bool CertificateValidationFailed {
  75                         get; set;
  76                 }
  77
  78 #if SECURITY_DEP
  79                 readonly ChainValidationHelper validationHelper;
  80                 readonly MonoTlsSettings settings;
  81
  82                 public MonoTlsStream (HttpWebRequest request, NetworkStream networkStream)
  83                 {
  84                         this.request = request;
  85                         this.networkStream = networkStream;
  86
  87                         settings = request.TlsSettings;
  88                         provider = request.TlsProvider ?? MonoTlsProviderFactory.GetProviderInternal ();
  89                         status = WebExceptionStatus.SecureChannelFailure;
  90
  91                         validationHelper = ChainValidationHelper.Create (provider.Provider, ref settings, this);
  92                 }
  93
  94                 internal Stream CreateStream (byte[] buffer)
  95                 {
  96                         sslStream = provider.CreateSslStream (networkStream, false, settings);
  97
  98                         try {
  99                                 sslStream.AuthenticateAsClient (
 100                                         request.Address.Host, request.ClientCertificates,
 101                                         (SslProtocols)ServicePointManager.SecurityProtocol,
 102                                         ServicePointManager.CheckCertificateRevocationList);
 103
 104                                 status = WebExceptionStatus.Success;
 105                         } catch (Exception ex) {
 106                                 status = WebExceptionStatus.SecureChannelFailure;
 107                                 throw;
 108                         } finally {
 109                                 if (CertificateValidationFailed)
 110                                         status = WebExceptionStatus.TrustFailure;
 111
 112                                 if (status == WebExceptionStatus.Success)
 113                                         request.ServicePoint.UpdateClientCertificate (sslStream.InternalLocalCertificate);
 114                                 else {
 115                                         request.ServicePoint.UpdateClientCertificate (null);
 116                                         sslStream = null;
 117                                 }
 118                         }
 119
 120                         try {
 121                                 if (buffer != null)
 122                                         sslStream.Write (buffer, 0, buffer.Length);
 123                         } catch {
 124                                 status = WebExceptionStatus.SendFailure;
 125                                 sslStream = null;
 126                                 throw;
 127                         }
 128
 129                         return sslStream.AuthenticatedStream;
 130                 }
 131 #endif
 132         }
 133 }