J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * |
| 26 | * run from MarkResetTest.sh |
| 27 | */ |
| 28 | |
| 29 | import java.io.*; |
| 30 | import java.net.*; |
| 31 | import java.util.regex.*; |
| 32 | |
| 33 | public class MarkResetTest { |
| 34 | |
| 35 | /** |
| 36 | * A class that simulates, on a separate, an FTP server. |
| 37 | */ |
| 38 | private class FtpServer extends Thread { |
| 39 | private ServerSocket server; |
| 40 | private int port; |
| 41 | private boolean done = false; |
| 42 | private boolean pasvEnabled = true; |
| 43 | private boolean portEnabled = true; |
| 44 | private boolean extendedEnabled = true; |
| 45 | |
| 46 | /** |
| 47 | * This Inner class will handle ONE client at a time. |
| 48 | * That's where 99% of the protocol handling is done. |
| 49 | */ |
| 50 | |
| 51 | private class FtpServerHandler extends Thread { |
| 52 | BufferedReader in; |
| 53 | PrintWriter out; |
| 54 | Socket client; |
| 55 | private final int ERROR = 0; |
| 56 | private final int USER = 1; |
| 57 | private final int PASS = 2; |
| 58 | private final int CWD = 3; |
| 59 | private final int TYPE = 4; |
| 60 | private final int RETR = 5; |
| 61 | private final int PASV = 6; |
| 62 | private final int PORT = 7; |
| 63 | private final int QUIT = 8; |
| 64 | private final int EPSV = 9; |
| 65 | String[] cmds = { "USER", "PASS", "CWD", |
| 66 | "TYPE", "RETR", "PASV", |
| 67 | "PORT", "QUIT", "EPSV"}; |
| 68 | private String arg = null; |
| 69 | private ServerSocket pasv = null; |
| 70 | private int data_port = 0; |
| 71 | private InetAddress data_addr = null; |
| 72 | |
| 73 | /** |
| 74 | * Parses a line to match it with one of the supported FTP commands. |
| 75 | * Returns the command number. |
| 76 | */ |
| 77 | |
| 78 | private int parseCmd(String cmd) { |
| 79 | if (cmd == null || cmd.length() < 3) |
| 80 | return ERROR; |
| 81 | int blank = cmd.indexOf(' '); |
| 82 | if (blank < 0) |
| 83 | blank = cmd.length(); |
| 84 | if (blank < 3) |
| 85 | return ERROR; |
| 86 | String s = cmd.substring(0, blank); |
| 87 | if (cmd.length() > blank+1) |
| 88 | arg = cmd.substring(blank+1, cmd.length()); |
| 89 | else |
| 90 | arg = null; |
| 91 | for (int i = 0; i < cmds.length; i++) { |
| 92 | if (s.equalsIgnoreCase(cmds[i])) |
| 93 | return i+1; |
| 94 | } |
| 95 | return ERROR; |
| 96 | } |
| 97 | |
| 98 | public FtpServerHandler(Socket cl) { |
| 99 | client = cl; |
| 100 | } |
| 101 | |
| 102 | protected boolean isPasvSet() { |
| 103 | if (pasv != null && !pasvEnabled) { |
| 104 | try { |
| 105 | pasv.close(); |
| 106 | } catch (IOException ex) { |
| 107 | } |
| 108 | pasv = null; |
| 109 | } |
| 110 | if (pasvEnabled && pasv != null) |
| 111 | return true; |
| 112 | return false; |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Open the data socket with the client. This can be the |
| 117 | * result of a "PASV" or "PORT" command. |
| 118 | */ |
| 119 | |
| 120 | protected OutputStream getOutDataStream() { |
| 121 | try { |
| 122 | if (isPasvSet()) { |
| 123 | Socket s = pasv.accept(); |
| 124 | return s.getOutputStream(); |
| 125 | } |
| 126 | if (data_addr != null) { |
| 127 | Socket s = new Socket(data_addr, data_port); |
| 128 | data_addr = null; |
| 129 | data_port = 0; |
| 130 | return s.getOutputStream(); |
| 131 | } |
| 132 | } catch (Exception e) { |
| 133 | e.printStackTrace(); |
| 134 | } |
| 135 | return null; |
| 136 | } |
| 137 | |
| 138 | protected InputStream getInDataStream() { |
| 139 | try { |
| 140 | if (isPasvSet()) { |
| 141 | Socket s = pasv.accept(); |
| 142 | return s.getInputStream(); |
| 143 | } |
| 144 | if (data_addr != null) { |
| 145 | Socket s = new Socket(data_addr, data_port); |
| 146 | data_addr = null; |
| 147 | data_port = 0; |
| 148 | return s.getInputStream(); |
| 149 | } |
| 150 | } catch (Exception e) { |
| 151 | e.printStackTrace(); |
| 152 | } |
| 153 | return null; |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * Handles the protocol exchange with the client. |
| 158 | */ |
| 159 | |
| 160 | public void run() { |
| 161 | boolean done = false; |
| 162 | String str; |
| 163 | int res; |
| 164 | boolean logged = false; |
| 165 | boolean waitpass = false; |
| 166 | |
| 167 | try { |
| 168 | in = new BufferedReader(new InputStreamReader( |
| 169 | client.getInputStream())); |
| 170 | out = new PrintWriter(client.getOutputStream(), true); |
| 171 | out.println("220 tatooine FTP server (SunOS 5.8) ready."); |
| 172 | } catch (Exception ex) { |
| 173 | return; |
| 174 | } |
| 175 | while (!done) { |
| 176 | try { |
| 177 | str = in.readLine(); |
| 178 | res = parseCmd(str); |
| 179 | if ((res > PASS && res != QUIT) && !logged) { |
| 180 | out.println("530 Not logged in."); |
| 181 | continue; |
| 182 | } |
| 183 | switch (res) { |
| 184 | case ERROR: |
| 185 | out.println("500 '" + str + |
| 186 | "': command not understood."); |
| 187 | break; |
| 188 | case USER: |
| 189 | if (!logged && !waitpass) { |
| 190 | out.println("331 Password required for " + arg); |
| 191 | waitpass = true; |
| 192 | } else { |
| 193 | out.println("503 Bad sequence of commands."); |
| 194 | } |
| 195 | break; |
| 196 | case PASS: |
| 197 | if (!logged && waitpass) { |
| 198 | out.println("230-Welcome to the FTP server!"); |
| 199 | out.println("ab"); |
| 200 | out.println("230 Guest login ok, " + |
| 201 | "access restrictions apply."); |
| 202 | logged = true; |
| 203 | waitpass = false; |
| 204 | } else |
| 205 | out.println("503 Bad sequence of commands."); |
| 206 | break; |
| 207 | case QUIT: |
| 208 | out.println("221 Goodbye."); |
| 209 | out.flush(); |
| 210 | out.close(); |
| 211 | if (pasv != null) |
| 212 | pasv.close(); |
| 213 | done = true; |
| 214 | break; |
| 215 | case TYPE: |
| 216 | out.println("200 Type set to " + arg + "."); |
| 217 | break; |
| 218 | case CWD: |
| 219 | out.println("250 CWD command successful."); |
| 220 | break; |
| 221 | case EPSV: |
| 222 | if (!extendedEnabled || !pasvEnabled) { |
| 223 | out.println("500 EPSV is disabled, " + |
| 224 | "use PORT instead."); |
| 225 | continue; |
| 226 | } |
| 227 | if ("all".equalsIgnoreCase(arg)) { |
| 228 | out.println("200 EPSV ALL command successful."); |
| 229 | continue; |
| 230 | } |
| 231 | try { |
| 232 | if (pasv == null) |
| 233 | pasv = new ServerSocket(0); |
| 234 | int port = pasv.getLocalPort(); |
| 235 | out.println("229 Entering Extended" + |
| 236 | " Passive Mode (|||" + port + "|)"); |
| 237 | } catch (IOException ssex) { |
| 238 | out.println("425 Can't build data connection:" + |
| 239 | " Connection refused."); |
| 240 | } |
| 241 | break; |
| 242 | |
| 243 | case PASV: |
| 244 | if (!pasvEnabled) { |
| 245 | out.println("500 PASV is disabled, " + |
| 246 | "use PORT instead."); |
| 247 | continue; |
| 248 | } |
| 249 | try { |
| 250 | if (pasv == null) |
| 251 | pasv = new ServerSocket(0); |
| 252 | int port = pasv.getLocalPort(); |
| 253 | |
| 254 | // Parenthesis are optional, so let's be |
| 255 | // nasty and don't put them |
| 256 | out.println("227 Entering Passive Mode" + |
| 257 | " 127,0,0,1," + |
| 258 | (port >> 8) + "," + (port & 0xff)); |
| 259 | } catch (IOException ssex) { |
| 260 | out.println("425 Can't build data connection:" + |
| 261 | "Connection refused."); |
| 262 | } |
| 263 | break; |
| 264 | case PORT: |
| 265 | if (!portEnabled) { |
| 266 | out.println("500 PORT is disabled, " + |
| 267 | "use PASV instead"); |
| 268 | continue; |
| 269 | } |
| 270 | StringBuffer host; |
| 271 | int i = 0, j = 4; |
| 272 | while (j > 0) { |
| 273 | i = arg.indexOf(',', i + 1); |
| 274 | if (i < 0) |
| 275 | break; |
| 276 | j--; |
| 277 | } |
| 278 | if (j != 0) { |
| 279 | out.println("500 '" + arg + "':" + |
| 280 | " command not understood."); |
| 281 | continue; |
| 282 | } |
| 283 | try { |
| 284 | host = new StringBuffer(arg.substring(0, i)); |
| 285 | for (j = 0; j < host.length(); j++) |
| 286 | if (host.charAt(j) == ',') |
| 287 | host.setCharAt(j, '.'); |
| 288 | String ports = arg.substring(i+1); |
| 289 | i = ports.indexOf(','); |
| 290 | data_port = Integer.parseInt( |
| 291 | ports.substring(0, i)) << 8; |
| 292 | data_port += (Integer.parseInt( |
| 293 | ports.substring(i+1))); |
| 294 | data_addr = InetAddress.getByName( |
| 295 | host.toString()); |
| 296 | out.println("200 Command okay."); |
| 297 | } catch (Exception ex3) { |
| 298 | data_port = 0; |
| 299 | data_addr = null; |
| 300 | out.println("500 '" + arg + "':" + |
| 301 | " command not understood."); |
| 302 | } |
| 303 | break; |
| 304 | case RETR: |
| 305 | { |
| 306 | File file = new File(arg); |
| 307 | if (!file.exists()) { |
| 308 | System.out.println("File not found"); |
| 309 | out.println("200 Command okay."); |
| 310 | out.println("550 '" + arg + |
| 311 | "' No such file or directory."); |
| 312 | break; |
| 313 | } |
| 314 | FileInputStream fin = new FileInputStream(file); |
| 315 | OutputStream dout = getOutDataStream(); |
| 316 | if (dout != null) { |
| 317 | out.println("150 Binary data connection" + |
| 318 | " for " + arg + |
| 319 | " (" + client.getInetAddress(). |
| 320 | getHostAddress() + ") (" + |
| 321 | file.length() + " bytes)."); |
| 322 | int c; |
| 323 | int len = 0; |
| 324 | while ((c = fin.read()) != -1) { |
| 325 | dout.write(c); |
| 326 | len++; |
| 327 | } |
| 328 | dout.flush(); |
| 329 | dout.close(); |
| 330 | fin.close(); |
| 331 | out.println("226 Binary Transfer complete."); |
| 332 | } else { |
| 333 | out.println("425 Can't build data" + |
| 334 | " connection: Connection refused."); |
| 335 | } |
| 336 | } |
| 337 | break; |
| 338 | } |
| 339 | } catch (IOException ioe) { |
| 340 | ioe.printStackTrace(); |
| 341 | try { |
| 342 | out.close(); |
| 343 | } catch (Exception ex2) { |
| 344 | } |
| 345 | done = true; |
| 346 | } |
| 347 | } |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | public FtpServer(int port) { |
| 352 | this.port = port; |
| 353 | } |
| 354 | |
| 355 | public FtpServer() { |
| 356 | this(21); |
| 357 | } |
| 358 | |
| 359 | public int getPort() { |
| 360 | if (server != null) |
| 361 | return server.getLocalPort(); |
| 362 | return 0; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * A way to tell the server that it can stop. |
| 367 | */ |
| 368 | synchronized public void terminate() { |
| 369 | done = true; |
| 370 | } |
| 371 | |
| 372 | |
| 373 | /* |
| 374 | * All we got to do here is create a ServerSocket and wait for a |
| 375 | * connection. When a connection happens, we just have to create |
| 376 | * a thread that will handle it. |
| 377 | */ |
| 378 | public void run() { |
| 379 | try { |
| 380 | server = new ServerSocket(port); |
| 381 | Socket client; |
| 382 | client = server.accept(); |
| 383 | (new FtpServerHandler(client)).start(); |
| 384 | server.close(); |
| 385 | } catch (Exception e) { |
| 386 | } |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | public static void main(String[] args) throws Exception { |
| 391 | MarkResetTest test = new MarkResetTest(); |
| 392 | } |
| 393 | |
| 394 | public MarkResetTest() { |
| 395 | FtpServer server = null; |
| 396 | try { |
| 397 | server = new FtpServer(0); |
| 398 | server.start(); |
| 399 | int port = 0; |
| 400 | while (port == 0) { |
| 401 | Thread.sleep(500); |
| 402 | port = server.getPort(); |
| 403 | } |
| 404 | |
| 405 | String filename = "EncDec.doc"; |
| 406 | URL url = new URL("ftp://localhost:" + port + "/" + |
| 407 | filename); |
| 408 | |
| 409 | URLConnection con = url.openConnection(); |
| 410 | System.out.println("getContent: " + con.getContent()); |
| 411 | System.out.println("getContent-length: " + con.getContentLength()); |
| 412 | |
| 413 | InputStream is = con.getInputStream(); |
| 414 | |
| 415 | /** |
| 416 | * guessContentTypeFromStream method calls mark and reset methods |
| 417 | * on the given stream. Make sure that calling |
| 418 | * guessContentTypeFromStream repeatedly does not affect |
| 419 | * reading from the stream afterwards |
| 420 | */ |
| 421 | System.out.println("Call GuessContentTypeFromStream()" + |
| 422 | " several times.."); |
| 423 | for (int i = 0; i < 5; i++) { |
| 424 | System.out.println((i + 1) + " mime-type: " + |
| 425 | con.guessContentTypeFromStream(is)); |
| 426 | } |
| 427 | |
| 428 | int len = 0; |
| 429 | int c; |
| 430 | while ((c = is.read()) != -1) { |
| 431 | len++; |
| 432 | } |
| 433 | is.close(); |
| 434 | System.out.println("read: " + len + " bytes of the file"); |
| 435 | |
| 436 | // We're done! |
| 437 | server.terminate(); |
| 438 | server.interrupt(); |
| 439 | |
| 440 | // Did we pass ? |
| 441 | if (len != (new File(filename)).length()) { |
| 442 | throw new Exception("Failed to read the file correctly"); |
| 443 | } |
| 444 | System.out.println("PASSED: File read correctly"); |
| 445 | } catch (Exception e) { |
| 446 | e.printStackTrace(); |
| 447 | try { |
| 448 | server.terminate(); |
| 449 | server.interrupt(); |
| 450 | } catch (Exception ex) { |
| 451 | } |
| 452 | throw new RuntimeException("FTP support error: " + e.getMessage()); |
| 453 | } |
| 454 | } |
| 455 | } |