mcs/class/System/System.Net.Security/SslStream.cs

   1 //
   2 // SslStream.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
  29 #if MONO_SECURITY_ALIAS
  30 extern alias MonoSecurity;
  31 #endif
  32
  33 #if MONO_SECURITY_ALIAS
  34 using MonoSecurity::Mono.Security.Interface;
  35 #else
  36 using Mono.Security.Interface;
  37 #endif
  38
  39 using CipherAlgorithmType = System.Security.Authentication.CipherAlgorithmType;
  40 using HashAlgorithmType = System.Security.Authentication.HashAlgorithmType;
  41 using ExchangeAlgorithmType = System.Security.Authentication.ExchangeAlgorithmType;
  42 #endif
  43
  44 using System.IO;
  45 using System.Net;
  46 using System.Net.Security;
  47 using System.Security.Authentication;
  48 using System.Security.Cryptography.X509Certificates;
  49 using System.Security.Permissions;
  50 using System.Security.Principal;
  51 using System.Security.Cryptography;
  52 using System.Threading.Tasks;
  53
  54 using MNS = Mono.Net.Security;
  55
  56 namespace System.Net.Security
  57 {
  58         /*
  59          * These two are defined by the referencesource; add them heere to make
  60          * it easy to switch between the two implementations.
  61          */
  62
  63         internal delegate bool RemoteCertValidationCallback (
  64                 string host,
  65                 X509Certificate certificate,
  66                 X509Chain chain,
  67                 SslPolicyErrors sslPolicyErrors);
  68
  69         internal delegate X509Certificate LocalCertSelectionCallback (
  70                 string targetHost,
  71                 X509CertificateCollection localCertificates,
  72                 X509Certificate remoteCertificate,
  73                 string[] acceptableIssuers);
  74
  75         public class SslStream : AuthenticatedStream
  76         {
  77 #if SECURITY_DEP
  78                 MonoTlsProvider provider;
  79                 IMonoSslStream impl;
  80
  81                 internal IMonoSslStream Impl {
  82                         get {
  83                                 CheckDisposed ();
  84                                 return impl;
  85                         }
  86                 }
  87
  88                 internal MonoTlsProvider Provider {
  89                         get {
  90                                 CheckDisposed ();
  91                                 return provider;
  92                         }
  93                 }
  94
  95                 static MonoTlsProvider GetProvider ()
  96                 {
  97                         return MonoTlsProviderFactory.GetProvider ();
  98                 }
  99
 100                 public SslStream (Stream innerStream)
 101                         : this (innerStream, false)
 102                 {
 103                 }
 104
 105                 public SslStream (Stream innerStream, bool leaveInnerStreamOpen)
 106                         : base (innerStream, leaveInnerStreamOpen)
 107                 {
 108                         provider = GetProvider ();
 109                         impl = provider.CreateSslStreamInternal (this, innerStream, leaveInnerStreamOpen, null);
 110                 }
 111
 112                 public SslStream (Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback)
 113                         : this (innerStream, leaveInnerStreamOpen, userCertificateValidationCallback, null)
 114                 {
 115                 }
 116
 117                 public SslStream (Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback, LocalCertificateSelectionCallback userCertificateSelectionCallback)
 118                         : base (innerStream, leaveInnerStreamOpen)
 119                 {
 120                         provider = GetProvider ();
 121                         var settings = MonoTlsSettings.CopyDefaultSettings ();
 122                         settings.RemoteCertificateValidationCallback = MNS.Private.CallbackHelpers.PublicToMono (userCertificateValidationCallback);
 123                         settings.ClientCertificateSelectionCallback = MNS.Private.CallbackHelpers.PublicToMono (userCertificateSelectionCallback);
 124                         impl = provider.CreateSslStream (innerStream, leaveInnerStreamOpen, settings);
 125                 }
 126
 127                 [MonoLimitation ("encryptionPolicy is ignored")]
 128                 public SslStream (Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback, LocalCertificateSelectionCallback userCertificateSelectionCallback, EncryptionPolicy encryptionPolicy)
 129                 : this (innerStream, leaveInnerStreamOpen, userCertificateValidationCallback, userCertificateSelectionCallback)
 130                 {
 131                 }
 132
 133                 SslStream (Stream innerStream, bool leaveInnerStreamOpen, MonoTlsProvider provider, MonoTlsSettings settings)
 134                         : base (innerStream, leaveInnerStreamOpen)
 135                 {
 136                         this.provider = provider;
 137                         impl = provider.CreateSslStreamInternal (this, innerStream, leaveInnerStreamOpen, settings);
 138                 }
 139
 140                 internal static IMonoSslStream CreateMonoSslStream (Stream innerStream, bool leaveInnerStreamOpen, MonoTlsProvider provider, MonoTlsSettings settings)
 141                 {
 142                         var sslStream = new SslStream (innerStream, leaveInnerStreamOpen, provider, settings);
 143                         return sslStream.Impl;
 144                 }
 145
 146                 public virtual void AuthenticateAsClient (string targetHost)
 147                 {
 148                         Impl.AuthenticateAsClient (targetHost);
 149                 }
 150
 151                 public virtual void AuthenticateAsClient (string targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
 152                 {
 153                         Impl.AuthenticateAsClient (targetHost, clientCertificates, enabledSslProtocols, checkCertificateRevocation);
 154                 }
 155
 156                 // [HostProtection (ExternalThreading=true)]
 157                 public virtual IAsyncResult BeginAuthenticateAsClient (string targetHost, AsyncCallback asyncCallback, object asyncState)
 158                 {
 159                         return Impl.BeginAuthenticateAsClient (targetHost, asyncCallback, asyncState);
 160                 }
 161
 162                 // [HostProtection (ExternalThreading=true)]
 163                 public virtual IAsyncResult BeginAuthenticateAsClient (string targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, bool checkCertificateRevocation, AsyncCallback asyncCallback, object asyncState)
 164                 {
 165                         return Impl.BeginAuthenticateAsClient (targetHost, clientCertificates, enabledSslProtocols, checkCertificateRevocation, asyncCallback, asyncState);
 166                 }
 167
 168                 public virtual void EndAuthenticateAsClient (IAsyncResult asyncResult)
 169                 {
 170                         Impl.EndAuthenticateAsClient (asyncResult);
 171                 }
 172
 173                 public virtual void AuthenticateAsServer (X509Certificate serverCertificate)
 174                 {
 175                         Impl.AuthenticateAsServer (serverCertificate);
 176                 }
 177
 178                 public virtual void AuthenticateAsServer (X509Certificate serverCertificate, bool clientCertificateRequired, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
 179                 {
 180                         Impl.AuthenticateAsServer (serverCertificate, clientCertificateRequired, enabledSslProtocols, checkCertificateRevocation);
 181                 }
 182
 183                 // [HostProtection (ExternalThreading=true)]
 184                 public virtual IAsyncResult BeginAuthenticateAsServer (X509Certificate serverCertificate, AsyncCallback asyncCallback, object asyncState)
 185                 {
 186                         return Impl.BeginAuthenticateAsServer (serverCertificate, asyncCallback, asyncState);
 187                 }
 188
 189                 public virtual IAsyncResult BeginAuthenticateAsServer (X509Certificate serverCertificate, bool clientCertificateRequired, SslProtocols enabledSslProtocols, bool checkCertificateRevocation, AsyncCallback asyncCallback, object asyncState)
 190                 {
 191                         return Impl.BeginAuthenticateAsServer (serverCertificate, clientCertificateRequired, enabledSslProtocols, checkCertificateRevocation, asyncCallback, asyncState);
 192                 }
 193
 194                 public virtual void EndAuthenticateAsServer (IAsyncResult asyncResult)
 195                 {
 196                         Impl.EndAuthenticateAsServer (asyncResult);
 197                 }
 198
 199                 public TransportContext TransportContext {
 200                         get {
 201                                 throw new NotSupportedException();
 202                         }
 203                 }
 204
 205                 // [HostProtection (ExternalThreading=true)]
 206                 public virtual Task AuthenticateAsClientAsync (string targetHost)
 207                 {
 208                         return Impl.AuthenticateAsClientAsync (targetHost);
 209                 }
 210
 211                 public virtual Task AuthenticateAsClientAsync (string targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
 212                 {
 213                         return Impl.AuthenticateAsClientAsync (targetHost, clientCertificates, enabledSslProtocols, checkCertificateRevocation);
 214                 }
 215
 216                 public virtual Task AuthenticateAsServerAsync (X509Certificate serverCertificate)
 217                 {
 218                         return Impl.AuthenticateAsServerAsync (serverCertificate);
 219                 }
 220
 221                 public virtual Task AuthenticateAsServerAsync (X509Certificate serverCertificate, bool clientCertificateRequired, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
 222                 {
 223                         return Impl.AuthenticateAsServerAsync (serverCertificate, clientCertificateRequired, enabledSslProtocols, checkCertificateRevocation);
 224                 }
 225
 226                 public override bool IsAuthenticated {
 227                         get { return Impl.IsAuthenticated; }
 228                 }
 229
 230                 public override bool IsMutuallyAuthenticated {
 231                         get { return Impl.IsMutuallyAuthenticated; }
 232                 }
 233
 234                 public override bool IsEncrypted {
 235                         get { return Impl.IsEncrypted; }
 236                 }
 237
 238                 public override bool IsSigned {
 239                         get { return Impl.IsSigned; }
 240                 }
 241
 242                 public override bool IsServer {
 243                         get { return Impl.IsServer; }
 244                 }
 245
 246                 public virtual SslProtocols SslProtocol {
 247                         get { return (SslProtocols)Impl.SslProtocol; }
 248                 }
 249
 250                 public virtual bool CheckCertRevocationStatus {
 251                         get { return Impl.CheckCertRevocationStatus; }
 252                 }
 253
 254                 public virtual X509Certificate LocalCertificate {
 255                         get { return Impl.LocalCertificate; }
 256                 }
 257
 258                 public virtual X509Certificate RemoteCertificate {
 259                         get { return Impl.RemoteCertificate; }
 260                 }
 261
 262                 public virtual CipherAlgorithmType CipherAlgorithm {
 263                         get { return (CipherAlgorithmType)Impl.CipherAlgorithm; }
 264                 }
 265
 266                 public virtual int CipherStrength {
 267                         get { return Impl.CipherStrength; }
 268                 }
 269
 270                 public virtual HashAlgorithmType HashAlgorithm {
 271                         get { return (HashAlgorithmType)Impl.HashAlgorithm; }
 272                 }
 273
 274                 public virtual int HashStrength {
 275                         get { return Impl.HashStrength; }
 276                 }
 277
 278                 public virtual ExchangeAlgorithmType KeyExchangeAlgorithm {
 279                         get { return (ExchangeAlgorithmType)Impl.KeyExchangeAlgorithm; }
 280                 }
 281
 282                 public virtual int KeyExchangeStrength {
 283                         get { return Impl.KeyExchangeStrength; }
 284                 }
 285
 286                 public override bool CanSeek {
 287                         get { return false; }
 288                 }
 289
 290                 public override bool CanRead {
 291                         get { return Impl.CanRead; }
 292                 }
 293
 294                 public override bool CanTimeout {
 295                         get { return Impl.CanTimeout; }
 296                 }
 297
 298                 public override bool CanWrite {
 299                         get { return Impl.CanWrite; }
 300                 }
 301
 302                 public override int ReadTimeout {
 303                         get { return Impl.ReadTimeout; }
 304                         set { Impl.ReadTimeout = value; }
 305                 }
 306
 307                 public override int WriteTimeout {
 308                         get { return Impl.WriteTimeout; }
 309                         set { Impl.WriteTimeout = value; }
 310                 }
 311
 312                 public override long Length {
 313                         get { return Impl.Length; }
 314                 }
 315
 316                 public override long Position {
 317                         get { return Impl.Position; }
 318                         set {
 319                                 throw new NotSupportedException (SR.GetString (SR.net_noseek));
 320                         }
 321                 }
 322
 323                 public override void SetLength (long value)
 324                 {
 325                         Impl.SetLength (value);
 326                 }
 327
 328                 public override long Seek (long offset, SeekOrigin origin)
 329                 {
 330                         throw new NotSupportedException (SR.GetString (SR.net_noseek));
 331                 }
 332
 333                 public override void Flush ()
 334                 {
 335                         Impl.Flush ();
 336                 }
 337
 338                 void CheckDisposed ()
 339                 {
 340                         if (impl == null)
 341                                 throw new ObjectDisposedException ("SslStream");
 342                 }
 343
 344                 protected override void Dispose (bool disposing)
 345                 {
 346                         try {
 347                                 if (impl != null && disposing) {
 348                                         impl.Dispose ();
 349                                         impl = null;
 350                                 }
 351                         } finally {
 352                                 base.Dispose (disposing);
 353                         }
 354                 }
 355
 356                 public override int Read (byte[] buffer, int offset, int count)
 357                 {
 358                         return Impl.Read (buffer, offset, count);
 359                 }
 360
 361                 public void Write (byte[] buffer)
 362                 {
 363                         Impl.Write (buffer);
 364                 }
 365
 366                 public override void Write (byte[] buffer, int offset, int count)
 367                 {
 368                         Impl.Write (buffer, offset, count);
 369                 }
 370
 371                 // [HostProtection (ExternalThreading=true)]
 372                 public override IAsyncResult BeginRead (byte[] buffer, int offset, int count, AsyncCallback asyncCallback, object asyncState)
 373                 {
 374                         return Impl.BeginRead (buffer, offset, count, asyncCallback, asyncState);
 375                 }
 376
 377                 public override int EndRead (IAsyncResult asyncResult)
 378                 {
 379                         return Impl.EndRead (asyncResult);
 380                 }
 381
 382                 // [HostProtection (ExternalThreading=true)]
 383                 public override IAsyncResult BeginWrite (byte[] buffer, int offset, int count, AsyncCallback asyncCallback, object asyncState)
 384                 {
 385                         return Impl.BeginWrite (buffer, offset, count, asyncCallback, asyncState);
 386                 }
 387
 388                 public override void EndWrite (IAsyncResult asyncResult)
 389                 {
 390                         Impl.EndWrite (asyncResult);
 391                 }
 392 #else // !SECURITY_DEP
 393                 const string EXCEPTION_MESSAGE = "System.Net.Security.SslStream is not supported on the current platform.";
 394
 395                 public SslStream (Stream innerStream)
 396                         : this (innerStream, false)
 397                 {
 398                 }
 399
 400                 public SslStream (Stream innerStream, bool leaveInnerStreamOpen)
 401                         : base (innerStream, leaveInnerStreamOpen)
 402                 {
 403                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 404                 }
 405
 406                 public SslStream (Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback)
 407                         : this (innerStream, leaveInnerStreamOpen)
 408                 {
 409                 }
 410
 411                 public SslStream (Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback, LocalCertificateSelectionCallback userCertificateSelectionCallback)
 412                         : this (innerStream, leaveInnerStreamOpen)
 413                 {
 414                 }
 415
 416                 public SslStream (Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback, LocalCertificateSelectionCallback userCertificateSelectionCallback, EncryptionPolicy encryptionPolicy)
 417                         : this (innerStream, leaveInnerStreamOpen)
 418                 {
 419                 }
 420
 421                 public virtual void AuthenticateAsClient (string targetHost)
 422                 {
 423                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 424                 }
 425
 426                 public virtual void AuthenticateAsClient (string targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
 427                 {
 428                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 429                 }
 430
 431                 public virtual IAsyncResult BeginAuthenticateAsClient (string targetHost, AsyncCallback asyncCallback, object asyncState)
 432                 {
 433                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 434                 }
 435
 436                 public virtual IAsyncResult BeginAuthenticateAsClient (string targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, bool checkCertificateRevocation, AsyncCallback asyncCallback, object asyncState)
 437                 {
 438                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 439                 }
 440
 441                 public virtual void EndAuthenticateAsClient (IAsyncResult asyncResult)
 442                 {
 443                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 444                 }
 445
 446                 public virtual void AuthenticateAsServer (X509Certificate serverCertificate)
 447                 {
 448                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 449                 }
 450
 451                 public virtual void AuthenticateAsServer (X509Certificate serverCertificate, bool clientCertificateRequired, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
 452                 {
 453                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 454                 }
 455
 456                 public virtual IAsyncResult BeginAuthenticateAsServer (X509Certificate serverCertificate, AsyncCallback asyncCallback, object asyncState)
 457                 {
 458                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 459                 }
 460
 461                 public virtual IAsyncResult BeginAuthenticateAsServer (X509Certificate serverCertificate, bool clientCertificateRequired, SslProtocols enabledSslProtocols, bool checkCertificateRevocation, AsyncCallback asyncCallback, object asyncState)
 462                 {
 463                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 464                 }
 465
 466                 public virtual void EndAuthenticateAsServer (IAsyncResult asyncResult)
 467                 {
 468                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 469                 }
 470
 471                 public TransportContext TransportContext {
 472                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 473                 }
 474
 475                 public virtual Task AuthenticateAsClientAsync (string targetHost)
 476                 {
 477                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 478                 }
 479
 480                 public virtual Task AuthenticateAsClientAsync (string targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
 481                 {
 482                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 483                 }
 484
 485                 public virtual Task AuthenticateAsServerAsync (X509Certificate serverCertificate)
 486                 {
 487                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 488                 }
 489
 490                 public virtual Task AuthenticateAsServerAsync (X509Certificate serverCertificate, bool clientCertificateRequired, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
 491                 {
 492                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 493                 }
 494
 495                 public override bool IsAuthenticated {
 496                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 497                 }
 498
 499                 public override bool IsMutuallyAuthenticated {
 500                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 501                 }
 502
 503                 public override bool IsEncrypted {
 504                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 505                 }
 506
 507                 public override bool IsSigned {
 508                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 509                 }
 510
 511                 public override bool IsServer {
 512                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 513                 }
 514
 515                 public virtual SslProtocols SslProtocol {
 516                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 517                 }
 518
 519                 public virtual bool CheckCertRevocationStatus {
 520                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 521                 }
 522
 523                 public virtual X509Certificate LocalCertificate {
 524                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 525                 }
 526
 527                 public virtual X509Certificate RemoteCertificate {
 528                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 529                 }
 530
 531                 public virtual CipherAlgorithmType CipherAlgorithm {
 532                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 533                 }
 534
 535                 public virtual int CipherStrength {
 536                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 537                 }
 538
 539                 public virtual HashAlgorithmType HashAlgorithm {
 540                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 541                 }
 542
 543                 public virtual int HashStrength {
 544                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 545                 }
 546
 547                 public virtual ExchangeAlgorithmType KeyExchangeAlgorithm {
 548                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 549                 }
 550
 551                 public virtual int KeyExchangeStrength {
 552                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 553                 }
 554
 555                 public override bool CanSeek {
 556                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 557                 }
 558
 559                 public override bool CanRead {
 560                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 561                 }
 562
 563                 public override bool CanTimeout {
 564                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 565                 }
 566
 567                 public override bool CanWrite {
 568                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 569                 }
 570
 571                 public override int ReadTimeout {
 572                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 573                         set { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 574                 }
 575
 576                 public override int WriteTimeout {
 577                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 578                         set { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 579                 }
 580
 581                 public override long Length {
 582                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 583                 }
 584
 585                 public override long Position {
 586                         get { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 587                         set { throw new PlatformNotSupportedException (EXCEPTION_MESSAGE); }
 588                 }
 589
 590                 public override void SetLength (long value)
 591                 {
 592                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 593                 }
 594
 595                 public override long Seek (long offset, SeekOrigin origin)
 596                 {
 597                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 598                 }
 599
 600                 public override void Flush ()
 601                 {
 602                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 603                 }
 604
 605                 protected override void Dispose (bool disposing)
 606                 {
 607                 }
 608
 609                 public override int Read (byte[] buffer, int offset, int count)
 610                 {
 611                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 612                 }
 613
 614                 public void Write (byte[] buffer)
 615                 {
 616                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 617                 }
 618
 619                 public override void Write (byte[] buffer, int offset, int count)
 620                 {
 621                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 622                 }
 623
 624                 public override IAsyncResult BeginRead (byte[] buffer, int offset, int count, AsyncCallback asyncCallback, object asyncState)
 625                 {
 626                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 627                 }
 628
 629                 public override int EndRead (IAsyncResult asyncResult)
 630                 {
 631                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 632                 }
 633
 634                 public override IAsyncResult BeginWrite (byte[] buffer, int offset, int count, AsyncCallback asyncCallback, object asyncState)
 635                 {
 636                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 637                 }
 638
 639                 public override void EndWrite (IAsyncResult asyncResult)
 640                 {
 641                         throw new PlatformNotSupportedException (EXCEPTION_MESSAGE);
 642                 }
 643 #endif
 644         }
 645 }