mcs/class/System/Test/System.Net/FtpWebRequestTest.cs

   1 //
   2 // FtpWebRequestTest.cs - NUnit Test Cases for System.Net.FtpWebRequest
   3 //
   4 // Authors:
   5 //      Carlos Alberto Cortez <calberto.cortez@gmail.com>
   6 //      Gonzalo Paniagua Javier <gonzalo@novell.com>
   7 //
   8 // Copyright (c) 2006,2007,2008 Novell, Inc. (http://www.novell.com)
   9 //
  10 using NUnit.Framework;
  11 using System;
  12 using System.Collections.Generic;
  13 using System.IO;
  14 using System.Net;
  15 using System.Net.Sockets;
  16 using System.Text;
  17 using System.Threading;
  18
  19 namespace MonoTests.System.Net
  20 {
  21         [TestFixture]
  22         public class FtpWebRequestTest
  23         {
  24                 FtpWebRequest _defaultRequest;
  25                 FtpWebRequest defaultRequest {
  26                         get { return _defaultRequest ?? (_defaultRequest = (FtpWebRequest) WebRequest.Create ("ftp://www.contoso.com")); }
  27                 }
  28
  29                 private string _tempDirectory;
  30                 private string _tempFile;
  31
  32                 [SetUp]
  33                 public void SetUp ()
  34                 {
  35                         _tempDirectory = Path.Combine (Path.GetTempPath (), "MonoTests.System.Net.FileWebRequestTest");
  36                         _tempFile = Path.Combine (_tempDirectory, "FtpWebRequestTest.tmp");
  37                         if (!Directory.Exists (_tempDirectory)) {
  38                                 Directory.CreateDirectory (_tempDirectory);
  39                         } else {
  40                                 // ensure no files are left over from previous runs
  41                                 string [] files = Directory.GetFiles (_tempDirectory, "*");
  42                                 foreach (string file in files)
  43                                         File.Delete (file);
  44                         }
  45                 }
  46
  47                 [TearDown]
  48                 public void TearDown ()
  49                 {
  50                         if (Directory.Exists (_tempDirectory))
  51                                 Directory.Delete (_tempDirectory, true);
  52                 }
  53
  54                 [Test]
  55                 public void ContentLength ()
  56                 {
  57                         try {
  58                                 long l = defaultRequest.ContentLength;
  59 #if FEATURE_NO_BSD_SOCKETS
  60                                 Assert.Fail ("#1a");
  61                         } catch (PlatformNotSupportedException) {
  62                                 // OK.
  63 #else
  64                         } catch (NotSupportedException) {
  65                                 Assert.Fail ("#1"); // Not overriden
  66 #endif
  67                         }
  68
  69                         try {
  70                                 defaultRequest.ContentLength = 2;
  71 #if FEATURE_NO_BSD_SOCKETS
  72                                 Assert.Fail ("#2a");
  73                         } catch (PlatformNotSupportedException) {
  74                                 // OK.
  75 #else
  76                         } catch (NotSupportedException) {
  77                                 Assert.Fail ("#2"); // Not overriden
  78 #endif
  79                         }
  80                 }
  81
  82                 [Test]
  83                 public void ContentType ()
  84                 {
  85                         try {
  86                                 string t = defaultRequest.ContentType;
  87                                 Assert.Fail ("#1");
  88                         } catch (NotSupportedException) {
  89                         }
  90
  91                         try {
  92                                 defaultRequest.ContentType = String.Empty;
  93                                 Assert.Fail ("#2");
  94                         } catch (NotSupportedException) {
  95                         }
  96                 }
  97
  98                 [Test]
  99 #if FEATURE_NO_BSD_SOCKETS
 100                 [ExpectedException (typeof (PlatformNotSupportedException))]
 101 #endif
 102                 public void ContentOffset ()
 103                 {
 104                         try {
 105                                 defaultRequest.ContentOffset = -2;
 106                                 Assert.Fail ("#1");
 107                         } catch (ArgumentOutOfRangeException) {
 108                         }
 109                 }
 110
 111                 [Test]
 112 #if FEATURE_NO_BSD_SOCKETS
 113                 [ExpectedException (typeof (PlatformNotSupportedException))]
 114 #endif
 115                 public void Credentials ()
 116                 {
 117                         try {
 118                                 defaultRequest.Credentials = null;
 119                                 Assert.Fail ("#1");
 120                         } catch (ArgumentNullException) {
 121                         }
 122
 123                 }
 124
 125                 [Test]
 126 #if FEATURE_NO_BSD_SOCKETS
 127                 [ExpectedException (typeof (PlatformNotSupportedException))]
 128 #endif
 129                 public void Method ()
 130                 {
 131                         try {
 132                                 defaultRequest.Method = null;
 133                                 Assert.Fail ("#1");
 134                         } catch (ArgumentNullException) {
 135                         }
 136
 137                         try {
 138                                 defaultRequest.Method = String.Empty;
 139                                 Assert.Fail ("#2");
 140                         } catch (ArgumentException) {
 141                         }
 142
 143                         try {
 144                                 defaultRequest.Method = "WrongValue";
 145                                 Assert.Fail ("#3");
 146                         } catch (ArgumentException) {
 147                         }
 148                 }
 149
 150                 [Test]
 151                 public void PreAuthenticate ()
 152                 {
 153                         try {
 154                                 bool p = defaultRequest.PreAuthenticate;
 155                                 Assert.Fail ("#1");
 156                         } catch (NotSupportedException) {
 157                         }
 158
 159                         try {
 160                                 defaultRequest.PreAuthenticate = true;
 161                         } catch (NotSupportedException) {
 162                         }
 163                 }
 164
 165                 [Test]
 166 #if FEATURE_NO_BSD_SOCKETS
 167                 [ExpectedException (typeof (PlatformNotSupportedException))]
 168 #endif
 169                 public void ReadWriteTimeout ()
 170                 {
 171                         try {
 172                                 defaultRequest.ReadWriteTimeout = -2;
 173                                 Assert.Fail ("#2");
 174                         } catch (ArgumentOutOfRangeException) {
 175                         }
 176                 }
 177
 178                 [Test]
 179 #if FEATURE_NO_BSD_SOCKETS
 180                 [ExpectedException (typeof (PlatformNotSupportedException))]
 181 #endif
 182                 public void Timeout ()
 183                 {
 184                         try {
 185                                 defaultRequest.Timeout = -2;
 186                                 Assert.Fail ("#2");
 187                         } catch (ArgumentOutOfRangeException) {
 188                         }
 189                 }
 190
 191                 [Test]
 192 #if FEATURE_NO_BSD_SOCKETS
 193                 [ExpectedException (typeof (PlatformNotSupportedException))]
 194 #endif
 195                 public void DefaultValues ()
 196                 {
 197                         FtpWebRequest request = (FtpWebRequest) WebRequest.Create ("ftp://www.contoso.com");
 198
 199                         Assert.AreEqual (0, request.ContentOffset, "ContentOffset");
 200                         Assert.AreEqual (false, request.EnableSsl, "EnableSsl");
 201                         // FIXME: Disabled this one by now. KeepAlive is not well supported.
 202                         // Assert.AreEqual (true, request.KeepAlive, "KeepAlive");
 203                         Assert.AreEqual (WebRequestMethods.Ftp.DownloadFile, request.Method, "#1");
 204                         Assert.AreEqual (300000, request.ReadWriteTimeout, "ReadWriteTimeout");
 205                         Assert.IsNull (request.RenameTo, "RenameTo");
 206                         Assert.AreEqual (true, request.UseBinary, "UseBinary");
 207                         Assert.AreEqual (100000, request.Timeout, "Timeout");
 208                         Assert.AreEqual (true, request.UsePassive, "UsePassive");
 209                 }
 210
 211                 [Test]
 212 #if FEATURE_NO_BSD_SOCKETS
 213                 [ExpectedException (typeof (PlatformNotSupportedException))]
 214 #endif
 215                 public void RenameTo ()
 216                 {
 217                         try {
 218                                 defaultRequest.RenameTo = null;
 219                                 Assert.Fail ("#1");
 220                         } catch (ArgumentException) {
 221                         }
 222
 223                         try {
 224                                 defaultRequest.RenameTo = String.Empty;
 225                                 Assert.Fail ("#2");
 226                         } catch (ArgumentException) {
 227                         }
 228                 }
 229
 230                 [Test]
 231 #if FEATURE_NO_BSD_SOCKETS
 232                 [ExpectedException (typeof (PlatformNotSupportedException))]
 233 #endif
 234                 public void UploadFile1_v4 ()
 235                 {
 236                         UploadFile1 (false);
 237                 }
 238
 239                 [Test]
 240 #if FEATURE_NO_BSD_SOCKETS
 241                 [ExpectedException (typeof (PlatformNotSupportedException))]
 242 #endif
 243                 public void UploadFile1_v6 ()
 244                 {
 245                         if (!Socket.OSSupportsIPv6)
 246                                 Assert.Ignore ("IPv6 not supported.");
 247
 248                         UploadFile1 (true);
 249                 }
 250
 251                 void UploadFile1 (bool ipv6)
 252                 {
 253                         ServerPut sp = new ServerPut (ipv6);
 254                         sp.Start ();
 255                         string uri = String.Format ("ftp://{0}:{1}/uploads/file.txt", EncloseIPv6 (sp.IPAddress), sp.Port);
 256                         try {
 257                                 FtpWebRequest ftp = (FtpWebRequest) WebRequest.Create (uri);
 258                                 ftp.KeepAlive = false;
 259                                 ftp.Timeout = 5000;
 260                                 ftp.Method = WebRequestMethods.Ftp.UploadFile;
 261                                 ftp.ContentLength = 10;
 262                                 ftp.UseBinary = true;
 263                                 Stream stream = ftp.GetRequestStream ();
 264                                 for (int i = 0; i < 10; i++)
 265                                         stream.WriteByte ((byte)i);
 266                                 stream.Close ();
 267                                 FtpWebResponse response = (FtpWebResponse) ftp.GetResponse ();
 268                                 Assert.IsTrue ((int) response.StatusCode >= 200 && (int) response.StatusCode < 300, "UP#01");
 269                                 Assert.AreEqual (10, sp.result.Count, "UP#02");
 270                                 response.Close ();
 271                         } catch (Exception) {
 272                                 if (!String.IsNullOrEmpty (sp.Where))
 273                                         throw new Exception (sp.Where);
 274                                 throw;
 275                         } finally {
 276                                 sp.Stop ();
 277                         }
 278                 }
 279
 280                 [Test]
 281 #if FEATURE_NO_BSD_SOCKETS
 282                 [ExpectedException (typeof (PlatformNotSupportedException))]
 283 #endif
 284                 public void UploadFile_WebClient_v4 ()
 285                 {
 286                         UploadFile_WebClient (false);
 287                 }
 288
 289                 [Test]
 290 #if FEATURE_NO_BSD_SOCKETS
 291                 [ExpectedException (typeof (PlatformNotSupportedException))]
 292 #endif
 293                 public void UploadFile_WebClient_v6 ()
 294                 {
 295                         if (!Socket.OSSupportsIPv6)
 296                                 Assert.Ignore ("IPv6 not supported.");
 297
 298                         UploadFile_WebClient (true);
 299                 }
 300
 301                 public void UploadFile_WebClient (bool ipv6)
 302                 {
 303                         ServerPut sp = new ServerPut (ipv6);
 304                         File.WriteAllText (_tempFile, "0123456789");
 305                         sp.Start ();
 306
 307                         using (WebClient m_WebClient = new WebClient())
 308                         {
 309                                 string uri = String.Format ("ftp://{0}:{1}/uploads/file.txt", EncloseIPv6 (sp.IPAddress), sp.Port);
 310
 311                                 m_WebClient.UploadFile(uri, _tempFile);
 312                         }
 313                         Assert.AreEqual (10, sp.result.Count, "WebClient/Ftp#01");
 314
 315                         sp.Stop ();
 316                 }
 317
 318                 [Test]
 319 #if FEATURE_NO_BSD_SOCKETS
 320                 [ExpectedException (typeof (PlatformNotSupportedException))]
 321 #endif
 322                 public void DownloadFile1_v4 ()
 323                 {
 324                         DownloadFile (new ServerDownload (false));
 325                 }
 326
 327                 [Test]
 328 #if FEATURE_NO_BSD_SOCKETS
 329                 [ExpectedException (typeof (PlatformNotSupportedException))]
 330 #endif
 331                 public void DownloadFile1_v6 ()
 332                 {
 333                         if (!Socket.OSSupportsIPv6)
 334                                 Assert.Ignore ("IPv6 not supported.");
 335
 336                         DownloadFile (new ServerDownload (true));
 337                 }
 338
 339                 void DownloadFile (ServerDownload sp)
 340                 {
 341                         sp.Start ();
 342                         string uri = String.Format ("ftp://{0}:{1}/file.txt", EncloseIPv6 (sp.IPAddress), sp.Port);
 343                         try {
 344                                 FtpWebRequest ftp = (FtpWebRequest) WebRequest.Create (uri);
 345                                 ftp.KeepAlive = false;
 346                                 ftp.Timeout = 5000;
 347                                 ftp.Method = WebRequestMethods.Ftp.DownloadFile;
 348                                 ftp.UseBinary = true;
 349                                 FtpWebResponse response = (FtpWebResponse) ftp.GetResponse ();
 350                                 Assert.IsTrue ((int) response.StatusCode >= 100 && (int) response.StatusCode < 200, "DL#01");
 351                                 using (Stream st = response.GetResponseStream ()) {
 352                                 }
 353                                 // This should be "220 Bye" or similar (no KeepAlive)
 354                                 Assert.IsTrue ((int) response.StatusCode >= 200 && (int) response.StatusCode < 300, "DL#02");
 355                                 response.Close ();
 356                         } catch (Exception) {
 357                                 if (!String.IsNullOrEmpty (sp.Where))
 358                                         throw new Exception (sp.Where);
 359                                 throw;
 360                         } finally {
 361                                 sp.Stop ();
 362                         }
 363                 }
 364
 365                 [Test]
 366 #if FEATURE_NO_BSD_SOCKETS
 367                 [ExpectedException (typeof (PlatformNotSupportedException))]
 368 #endif
 369                 public void DownloadFile2_v4 ()
 370                 {
 371                         // Some embedded FTP servers in Industrial Automation Hardware report
 372                         // the PWD using backslashes, but allow forward slashes for CWD.
 373                         DownloadFile (new ServerDownload (@"\Users\someuser", "/Users/someuser/", false));
 374                 }
 375
 376                 [Test]
 377 #if FEATURE_NO_BSD_SOCKETS
 378                 [ExpectedException (typeof (PlatformNotSupportedException))]
 379 #endif
 380                 public void DownloadFile2_v6 ()
 381                 {
 382                         // Some embedded FTP servers in Industrial Automation Hardware report
 383                         // the PWD using backslashes, but allow forward slashes for CWD.
 384                         DownloadFile (new ServerDownload (@"\Users\someuser", "/Users/someuser/", true));
 385                 }
 386
 387                 [Test]
 388 #if FEATURE_NO_BSD_SOCKETS
 389                 [ExpectedException (typeof (PlatformNotSupportedException))]
 390 #endif
 391                 public void DeleteFile1_v4 ()
 392                 {
 393                         DeleteFile1 (false);
 394                 }
 395
 396                 [Test]
 397 #if FEATURE_NO_BSD_SOCKETS
 398                 [ExpectedException (typeof (PlatformNotSupportedException))]
 399 #endif
 400                 public void DeleteFile1_v6 ()
 401                 {
 402                         if (!Socket.OSSupportsIPv6)
 403                                 Assert.Ignore ("IPv6 not supported.");
 404
 405                         DeleteFile1 (true);
 406                 }
 407
 408                 void DeleteFile1 (bool ipv6)
 409                 {
 410                         ServerDeleteFile sp = new ServerDeleteFile (ipv6);
 411                         sp.Start ();
 412                         string uri = String.Format ("ftp://{0}:{1}/file.txt", EncloseIPv6 (sp.IPAddress), sp.Port);
 413                         try {
 414                                 FtpWebRequest ftp = (FtpWebRequest) WebRequest.Create (uri);
 415                                 Console.WriteLine (ftp.RequestUri);
 416                                 ftp.KeepAlive = false;
 417                                 ftp.Timeout = 5000;
 418                                 ftp.Method = WebRequestMethods.Ftp.DeleteFile;
 419                                 ftp.UseBinary = true;
 420                                 FtpWebResponse response = (FtpWebResponse) ftp.GetResponse ();
 421                                 Assert.IsTrue ((int) response.StatusCode >= 200 && (int) response.StatusCode < 300, "DF#01");
 422                                 response.Close ();
 423                         } catch (Exception e) {
 424                                 Console.WriteLine (e);
 425                                 if (!String.IsNullOrEmpty (sp.Where))
 426                                         throw new Exception (sp.Where);
 427                                 throw;
 428                         } finally {
 429                                 sp.Stop ();
 430                         }
 431                 }
 432
 433                 [Test]
 434 #if FEATURE_NO_BSD_SOCKETS
 435                 [ExpectedException (typeof (PlatformNotSupportedException))]
 436 #endif
 437                 public void ListDirectory1_v4 ()
 438                 {
 439                         ListDirectory1 (false);
 440                 }
 441
 442                 [Test]
 443 #if FEATURE_NO_BSD_SOCKETS
 444                 [ExpectedException (typeof (PlatformNotSupportedException))]
 445 #endif
 446                 public void ListDirectory1_v6 ()
 447                 {
 448                         if (!Socket.OSSupportsIPv6)
 449                                 Assert.Ignore ("IPv6 not supported.");
 450
 451                         ListDirectory1 (true);
 452                 }
 453
 454                 void ListDirectory1 (bool ipv6)
 455                 {
 456                         ServerListDirectory sp = new ServerListDirectory (ipv6);
 457                         sp.Start ();
 458                         string uri = String.Format ("ftp://{0}:{1}/somedir/", EncloseIPv6 (sp.IPAddress), sp.Port);
 459                         try {
 460                                 FtpWebRequest ftp = (FtpWebRequest) WebRequest.Create (uri);
 461                                 Console.WriteLine (ftp.RequestUri);
 462                                 ftp.KeepAlive = false;
 463                                 ftp.Timeout = 5000;
 464                                 ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
 465                                 ftp.UseBinary = true;
 466                                 using (FtpWebResponse response = (FtpWebResponse) ftp.GetResponse ()) {
 467                                         StreamReader reader = new StreamReader (response.GetResponseStream ());
 468                                         string result = reader.ReadToEnd ();
 469                                         Assert.IsTrue ((int) response.StatusCode >= 200 && (int) response.StatusCode < 300, "DF#01");
 470                                 }
 471                         } catch (Exception e) {
 472                                 Console.WriteLine (e);
 473                                 if (!String.IsNullOrEmpty (sp.Where))
 474                                         throw new Exception (sp.Where);
 475                                 throw;
 476                         } finally {
 477                                 sp.Stop ();
 478                         }
 479                 }
 480
 481                 string EncloseIPv6 (IPAddress address)
 482                 {
 483                         if (address.AddressFamily == AddressFamily.InterNetwork)
 484                                 return address.ToString ();
 485
 486                         return String.Format ("[{0}]", address.ToString ());
 487                 }
 488
 489                 class ServerListDirectory : FtpServer {
 490                         public ServerListDirectory (bool ipv6)
 491                                 : base (ipv6)
 492                         {
 493                         }
 494
 495                         protected override void Run ()
 496                         {
 497                                 Socket client = control.Accept ();
 498                                 NetworkStream ns = new NetworkStream (client, false);
 499                                 StreamWriter writer = new StreamWriter (ns, Encoding.ASCII);
 500                                 StreamReader reader = new StreamReader (ns, Encoding.UTF8);
 501                                 if (!DoAnonymousLogin (writer, reader)) {
 502                                         client.Close ();
 503                                         return;
 504                                 }
 505
 506                                 if (!DoInitialDialog (writer, reader, "/home/someuser", "/home/someuser/somedir/")) {
 507                                         client.Close ();
 508                                         return;
 509                                 }
 510
 511                                 string str = reader.ReadLine ();
 512                                 string resp = FormatPassiveResponse (str);
 513                                 if (resp == null) {
 514                                         client.Close ();
 515                                         return;
 516                                 }
 517                                 writer.WriteLine (resp);
 518                                 writer.Flush ();
 519
 520                                 str = reader.ReadLine ();
 521                                 if (str != "LIST") {
 522                                         Where = "LIST - '" + str + "'";
 523                                         client.Close ();
 524                                         return;
 525                                 }
 526                                 writer.WriteLine ("150 Here comes the directory listing");
 527                                 writer.Flush ();
 528
 529                                 Socket data_cnc = data.Accept ();
 530                                 byte [] dontcare = Encoding.ASCII.GetBytes ("drwxr-xr-x    2 ftp      ftp          4096 Oct 27 20:17 tests");
 531                                 data_cnc.Send (dontcare, 1, SocketFlags.None);
 532                                 data_cnc.Close ();
 533                                 writer.WriteLine ("226 Directory send Ok");
 534                                 writer.Flush ();
 535                                 if (!EndConversation (writer, reader)) {
 536                                         client.Close ();
 537                                         return;
 538                                 }
 539                                 client.Close ();
 540                         }
 541                 }
 542
 543                 class ServerDeleteFile : FtpServer {
 544                         public ServerDeleteFile (bool ipv6)
 545                                 : base (ipv6)
 546                         {
 547                         }
 548
 549                         protected override void Run ()
 550                         {
 551                                 Socket client = control.Accept ();
 552                                 NetworkStream ns = new NetworkStream (client, false);
 553                                 StreamWriter writer = new StreamWriter (ns, Encoding.ASCII);
 554                                 StreamReader reader = new StreamReader (ns, Encoding.UTF8);
 555                                 if (!DoAnonymousLogin (writer, reader)) {
 556                                         client.Close ();
 557                                         return;
 558                                 }
 559
 560                                 if (!DoInitialDialog (writer, reader, "/home/someuser", "/home/someuser/")) {
 561                                         client.Close ();
 562                                         return;
 563                                 }
 564
 565                                 string str = reader.ReadLine ();
 566                                 if (str.Trim () != "DELE file.txt") {
 567                                         Where = "DELE - " + str;
 568                                         client.Close ();
 569                                         return;
 570                                 }
 571                                 writer.WriteLine ("250 Delete operation successful");
 572                                 writer.Flush ();
 573                                 if (!EndConversation (writer, reader)) {
 574                                         client.Close ();
 575                                         return;
 576                                 }
 577                                 client.Close ();
 578                         }
 579                 }
 580
 581                 class ServerDownload : FtpServer {
 582
 583                         string Pwd, Cwd;
 584
 585                         public ServerDownload (bool ipv6)
 586                                 : this (null, null, ipv6)
 587                         {
 588                         }
 589
 590                         public ServerDownload (string pwd, string cwd, bool ipv6)
 591                                 : base (ipv6)
 592                         {
 593                                 Pwd = pwd ?? "/home/someuser";
 594                                 Cwd = cwd ?? "/home/someuser/";
 595                         }
 596
 597                         protected override void Run ()
 598                         {
 599                                 Socket client = control.Accept ();
 600                                 NetworkStream ns = new NetworkStream (client, false);
 601                                 StreamWriter writer = new StreamWriter (ns, Encoding.ASCII);
 602                                 StreamReader reader = new StreamReader (ns, Encoding.UTF8);
 603                                 if (!DoAnonymousLogin (writer, reader)) {
 604                                         client.Close ();
 605                                         return;
 606                                 }
 607
 608                                 if (!DoInitialDialog (writer, reader, Pwd, Cwd)) {
 609                                         client.Close ();
 610                                         return;
 611                                 }
 612
 613                                 string str = reader.ReadLine ();
 614                                 string resp = FormatPassiveResponse (str);
 615                                 if (resp == null) {
 616                                         client.Close ();
 617                                         return;
 618                                 }
 619                                 writer.WriteLine (resp);
 620                                 writer.Flush ();
 621
 622                                 str = reader.ReadLine ();
 623                                 if (str != "RETR file.txt") {
 624                                         Where = "RETR - " + str;
 625                                         client.Close ();
 626                                         return;
 627                                 }
 628                                 writer.WriteLine ("150 Opening BINARY mode data connection for blah (n bytes)");
 629                                 writer.Flush ();
 630
 631                                 Socket data_cnc = data.Accept ();
 632                                 byte [] dontcare = new byte [1];
 633                                 data_cnc.Receive (dontcare, 1, SocketFlags.None);
 634                                 data_cnc.Close ();
 635                                 writer.WriteLine ("226 File send Ok");
 636                                 writer.Flush ();
 637                                 if (!EndConversation (writer, reader)) {
 638                                         client.Close ();
 639                                         return;
 640                                 }
 641                                 client.Close ();
 642                         }
 643                 }
 644
 645                 class ServerPut : FtpServer {
 646                         public List<byte> result = new List<byte> ();
 647
 648                         public ServerPut (bool ipv6)
 649                                 : base (ipv6)
 650                         {
 651                         }
 652
 653                         protected override void Run ()
 654                         {
 655                                 Socket client = control.Accept ();
 656                                 NetworkStream ns = new NetworkStream (client, false);
 657                                 StreamWriter writer = new StreamWriter (ns, Encoding.ASCII);
 658                                 StreamReader reader = new StreamReader (ns, Encoding.UTF8);
 659                                 if (!DoAnonymousLogin (writer, reader)) {
 660                                         client.Close ();
 661                                         return;
 662                                 }
 663
 664                                 if (!DoInitialDialog (writer, reader, "/home/someuser", "/home/someuser/uploads/")) {
 665                                         client.Close ();
 666                                         return;
 667                                 }
 668
 669                                 string str = reader.ReadLine ();
 670                                 string resp = FormatPassiveResponse (str);
 671                                 if (resp == null) {
 672                                         client.Close ();
 673                                         return;
 674                                 }
 675                                 writer.WriteLine (resp);
 676                                 writer.Flush ();
 677
 678                                 str = reader.ReadLine ();
 679                                 if (str != "STOR file.txt") {
 680                                         Where = "STOR - " + str;
 681                                         client.Close ();
 682                                         return;
 683                                 }
 684                                 writer.WriteLine ("150 Ok to send data");
 685                                 writer.Flush ();
 686
 687                                 Socket data_cnc = data.Accept ();
 688                                 var datastr = new NetworkStream (data_cnc, false);
 689                                 int ch;
 690                                 while ((ch = datastr.ReadByte ()) != -1){
 691                                         result.Add ((byte)ch);
 692
 693                                 }
 694                                 data_cnc.Close ();
 695                                 writer.WriteLine ("226 File received Ok");
 696                                 writer.Flush ();
 697                                 if (!EndConversation (writer, reader)) {
 698                                         client.Close ();
 699                                         return;
 700                                 }
 701                                 client.Close ();
 702                         }
 703                 }
 704
 705                 abstract class FtpServer {
 706                         protected Socket control;
 707                         protected Socket data;
 708                         protected ManualResetEvent evt;
 709                         protected bool ipv6;
 710                         public string Where = "";
 711
 712                         public FtpServer (bool ipv6)
 713                         {
 714                                 control = new Socket (ipv6 ? AddressFamily.InterNetworkV6 : AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 715                                 control.Bind (new IPEndPoint (ipv6 ? IPAddress.IPv6Loopback : IPAddress.Loopback, 0));
 716                                 control.Listen (1);
 717                                 data = new Socket (ipv6 ? AddressFamily.InterNetworkV6 : AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 718                                 data.Bind (new IPEndPoint (ipv6 ? IPAddress.IPv6Loopback : IPAddress.Loopback, 0));
 719                                 data.Listen (1);
 720                                 this.ipv6 = ipv6;
 721                         }
 722
 723                         public void Start ()
 724                         {
 725                                 evt = new ManualResetEvent (false);
 726                                 Thread th = new Thread (new ThreadStart (Run));
 727                                 th.Start ();
 728                         }
 729
 730                         public void Stop ()
 731                         {
 732                                 evt.Set ();
 733                                 data.Close ();
 734                                 control.Close ();
 735                         }
 736
 737                         // PWD, CWD and TYPE I (type could be moved out of here)
 738                         protected bool DoInitialDialog (StreamWriter writer, StreamReader reader, string pwd, string cwd)
 739                         {
 740                                 string str = reader.ReadLine ();
 741                                 if (!str.StartsWith ("OPTS utf8 on")) {
 742                                         Where = "OPTS utf8 - " + str;
 743                                         return false;
 744                                 }
 745                                 writer.WriteLine ("200 Always in UTF8 mode"); // vsftpd
 746                                 writer.Flush ();
 747                                 str = reader.ReadLine ();
 748                                 if (!str.StartsWith ("PWD")) {
 749                                         Where = "PWD - " + str;
 750                                         return false;
 751                                 }
 752                                 writer.WriteLine ("257 \"{0}\"", pwd);
 753                                 writer.Flush ();
 754                                 str = reader.ReadLine ();
 755                                 if (str != ("CWD " + cwd)) {
 756                                         Where = "CWD - " + str;
 757                                         return false;
 758                                 }
 759                                 writer.WriteLine ("250 Directory changed");
 760                                 writer.Flush ();
 761                                 str = reader.ReadLine ();
 762                                 if (str != ("TYPE I")) {
 763                                         Where = "TYPE - " + str;
 764                                         return false;
 765                                 }
 766                                 writer.WriteLine ("200 Switching to binary mode");
 767                                 writer.Flush ();
 768                                 return true;
 769                         }
 770
 771                         protected bool EndConversation (StreamWriter writer, StreamReader reader)
 772                         {
 773                                 string str = reader.ReadLine ();
 774                                 if (str != "QUIT") {
 775                                         Where = "QUIT";
 776                                         return false;
 777                                 }
 778                                 writer.WriteLine ("220 Bye");
 779                                 writer.Flush ();
 780                                 Thread.Sleep (250);
 781                                 return true;
 782                         }
 783
 784                         protected bool DoAnonymousLogin (StreamWriter writer, StreamReader reader)
 785                         {
 786                                 writer.WriteLine ("220 Welcome to the jungle");
 787                                 writer.Flush ();
 788                                 string str = reader.ReadLine ();
 789                                 if (!str.StartsWith ("USER ")) {
 790                                         Where = "USER";
 791                                         return false;
 792                                 }
 793                                 writer.WriteLine ("331 Say 'Mellon'");
 794                                 writer.Flush ();
 795                                 str = reader.ReadLine ();
 796                                 if (!str.StartsWith ("PASS ")) {
 797                                         Where = "PASS";
 798                                         return false;
 799                                 }
 800                                 writer.WriteLine ("230 Logged in");
 801                                 writer.Flush ();
 802                                 return true;
 803                         }
 804
 805                         protected string FormatPassiveResponse (string request)
 806                         {
 807                                 if (ipv6) {
 808                                         if (request != "EPSV") {
 809                                                 Where = "EPSV";
 810                                                 return null;
 811                                         }
 812
 813                                         IPEndPoint end_data = (IPEndPoint) data.LocalEndPoint;
 814                                         return String.Format ("229 Extended Passive (|||{0}|)", end_data.Port);
 815                                 }
 816                                 else {
 817                                         if (request != "PASV") {
 818                                                 Where = "PASV";
 819                                                 return null;
 820                                         }
 821
 822                                         IPEndPoint end_data = (IPEndPoint) data.LocalEndPoint;
 823                                         byte [] addr_bytes = end_data.Address.GetAddressBytes ();
 824                                         byte [] port = new byte [2];
 825                                         port[0] = (byte) ((end_data.Port >> 8) & 255);
 826                                         port[1] = (byte) (end_data.Port & 255);
 827                                         StringBuilder sb = new StringBuilder ("227 Passive (");
 828                                         foreach (byte b in addr_bytes) {
 829                                                 sb.AppendFormat ("{0},", b);
 830                                         }
 831                                         sb.AppendFormat ("{0},", port [0]);
 832                                         sb.AppendFormat ("{0})", port [1]);
 833                                         return sb.ToString ();
 834                                 }
 835                         }
 836
 837                         public IPAddress IPAddress {
 838                                 get { return ((IPEndPoint) control.LocalEndPoint).Address; }
 839                         }
 840
 841                         public int Port {
 842                                 get { return ((IPEndPoint) control.LocalEndPoint).Port; }
 843                         }
 844
 845                         protected abstract void Run ();
 846                 }
 847         }
 848 }
 849
 850