J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001 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 | import java.io.*; |
| 25 | import java.net.*; |
| 26 | |
| 27 | /* |
| 28 | * @test |
| 29 | * @bug 4398880 |
| 30 | * @summary FTP URL processing modified to conform to RFC 1738 |
| 31 | */ |
| 32 | |
| 33 | public class FtpURL { |
| 34 | /** |
| 35 | * A class that simulates, on a separate, an FTP server. |
| 36 | */ |
| 37 | |
| 38 | private class FtpServer extends Thread { |
| 39 | private ServerSocket server; |
| 40 | private int port; |
| 41 | private boolean done = false; |
| 42 | private boolean portEnabled = true; |
| 43 | private boolean pasvEnabled = true; |
| 44 | private String username; |
| 45 | private String password; |
| 46 | private String cwd; |
| 47 | private String filename; |
| 48 | private String type; |
| 49 | private boolean list = false; |
| 50 | |
| 51 | /** |
| 52 | * This Inner class will handle ONE client at a time. |
| 53 | * That's where 99% of the protocol handling is done. |
| 54 | */ |
| 55 | |
| 56 | private class FtpServerHandler { |
| 57 | BufferedReader in; |
| 58 | PrintWriter out; |
| 59 | Socket client; |
| 60 | private final int ERROR = 0; |
| 61 | private final int USER = 1; |
| 62 | private final int PASS = 2; |
| 63 | private final int CWD = 3; |
| 64 | private final int CDUP = 4; |
| 65 | private final int PWD = 5; |
| 66 | private final int TYPE = 6; |
| 67 | private final int NOOP = 7; |
| 68 | private final int RETR = 8; |
| 69 | private final int PASV = 9; |
| 70 | private final int PORT = 10; |
| 71 | private final int LIST = 11; |
| 72 | private final int REIN = 12; |
| 73 | private final int QUIT = 13; |
| 74 | private final int STOR = 14; |
| 75 | private final int NLST = 15; |
| 76 | private final int RNFR = 16; |
| 77 | private final int RNTO = 17; |
| 78 | String[] cmds = { "USER", "PASS", "CWD", "CDUP", "PWD", "TYPE", |
| 79 | "NOOP", "RETR", "PASV", "PORT", "LIST", "REIN", |
| 80 | "QUIT", "STOR", "NLST", "RNFR", "RNTO" }; |
| 81 | private String arg = null; |
| 82 | private ServerSocket pasv = null; |
| 83 | private int data_port = 0; |
| 84 | private InetAddress data_addr = null; |
| 85 | |
| 86 | /** |
| 87 | * Parses a line to match it with one of the supported FTP commands. |
| 88 | * Returns the command number. |
| 89 | */ |
| 90 | |
| 91 | private int parseCmd(String cmd) { |
| 92 | if (cmd == null || cmd.length() < 3) |
| 93 | return ERROR; |
| 94 | int blank = cmd.indexOf(' '); |
| 95 | if (blank < 0) |
| 96 | blank = cmd.length(); |
| 97 | if (blank < 3) |
| 98 | return ERROR; |
| 99 | String s = cmd.substring(0, blank); |
| 100 | if (cmd.length() > blank+1) |
| 101 | arg = cmd.substring(blank+1, cmd.length()); |
| 102 | else |
| 103 | arg = null; |
| 104 | for (int i = 0; i < cmds.length; i++) { |
| 105 | if (s.equalsIgnoreCase(cmds[i])) |
| 106 | return i+1; |
| 107 | } |
| 108 | return ERROR; |
| 109 | } |
| 110 | |
| 111 | public FtpServerHandler(Socket cl) { |
| 112 | client = cl; |
| 113 | } |
| 114 | |
| 115 | protected boolean isPasvSet() { |
| 116 | if (pasv != null && !pasvEnabled) { |
| 117 | try { |
| 118 | pasv.close(); |
| 119 | } catch (IOException ex) { |
| 120 | } |
| 121 | pasv = null; |
| 122 | } |
| 123 | if (pasvEnabled && pasv != null) |
| 124 | return true; |
| 125 | return false; |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Open the data socket with the client. This can be the |
| 130 | * result of a "PASV" or "PORT" command. |
| 131 | */ |
| 132 | |
| 133 | protected OutputStream getOutDataStream() { |
| 134 | try { |
| 135 | if (isPasvSet()) { |
| 136 | Socket s = pasv.accept(); |
| 137 | return s.getOutputStream(); |
| 138 | } |
| 139 | if (data_addr != null) { |
| 140 | Socket s = new Socket(data_addr, data_port); |
| 141 | data_addr = null; |
| 142 | data_port = 0; |
| 143 | return s.getOutputStream(); |
| 144 | } |
| 145 | } catch (Exception e) { |
| 146 | e.printStackTrace(); |
| 147 | } |
| 148 | return null; |
| 149 | } |
| 150 | |
| 151 | protected InputStream getInDataStream() { |
| 152 | try { |
| 153 | if (isPasvSet()) { |
| 154 | Socket s = pasv.accept(); |
| 155 | return s.getInputStream(); |
| 156 | } |
| 157 | if (data_addr != null) { |
| 158 | Socket s = new Socket(data_addr, data_port); |
| 159 | data_addr = null; |
| 160 | data_port = 0; |
| 161 | return s.getInputStream(); |
| 162 | } |
| 163 | } catch (Exception e) { |
| 164 | e.printStackTrace(); |
| 165 | } |
| 166 | return null; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Handles the protocol exchange with the client. |
| 171 | */ |
| 172 | |
| 173 | public void run() { |
| 174 | boolean done = false; |
| 175 | String str; |
| 176 | int res; |
| 177 | boolean logged = false; |
| 178 | boolean waitpass = false; |
| 179 | |
| 180 | try { |
| 181 | in = new BufferedReader(new InputStreamReader(client.getInputStream())); |
| 182 | out = new PrintWriter(client.getOutputStream(), true); |
| 183 | out.println("220 tatooine FTP server (SunOS 5.8) ready."); |
| 184 | } catch (Exception ex) { |
| 185 | return; |
| 186 | } |
| 187 | synchronized (FtpServer.this) { |
| 188 | while (!done) { |
| 189 | try { |
| 190 | str = in.readLine(); |
| 191 | res = parseCmd(str); |
| 192 | if ((res > PASS && res != QUIT) && !logged) { |
| 193 | out.println("530 Not logged in."); |
| 194 | continue; |
| 195 | } |
| 196 | switch (res) { |
| 197 | case ERROR: |
| 198 | out.println("500 '" + str + "': command not understood."); |
| 199 | break; |
| 200 | case USER: |
| 201 | if (!logged && !waitpass) { |
| 202 | username = str.substring(5); |
| 203 | password = null; |
| 204 | cwd = null; |
| 205 | if ("user2".equals(username)) { |
| 206 | out.println("230 Guest login ok, access restrictions apply."); |
| 207 | logged = true; |
| 208 | } else { |
| 209 | out.println("331 Password required for " + arg); |
| 210 | waitpass = true; |
| 211 | } |
| 212 | } else { |
| 213 | out.println("503 Bad sequence of commands."); |
| 214 | } |
| 215 | break; |
| 216 | case PASS: |
| 217 | if (!logged && waitpass) { |
| 218 | out.println("230 Guest login ok, access restrictions apply."); |
| 219 | password = str.substring(5); |
| 220 | logged = true; |
| 221 | waitpass = false; |
| 222 | } else |
| 223 | out.println("503 Bad sequence of commands."); |
| 224 | break; |
| 225 | case QUIT: |
| 226 | out.println("221 Goodbye."); |
| 227 | out.flush(); |
| 228 | out.close(); |
| 229 | if (pasv != null) |
| 230 | pasv.close(); |
| 231 | done = true; |
| 232 | break; |
| 233 | case TYPE: |
| 234 | out.println("200 Type set to " + arg + "."); |
| 235 | type = arg; |
| 236 | break; |
| 237 | case CWD: |
| 238 | out.println("250 CWD command successful."); |
| 239 | if (cwd == null) |
| 240 | cwd = str.substring(4); |
| 241 | else |
| 242 | cwd = cwd + "/" + str.substring(4); |
| 243 | break; |
| 244 | case CDUP: |
| 245 | out.println("250 CWD command successful."); |
| 246 | break; |
| 247 | case PWD: |
| 248 | out.println("257 \"" + cwd + "\" is current directory"); |
| 249 | break; |
| 250 | case PASV: |
| 251 | if (!pasvEnabled) { |
| 252 | out.println("500 PASV is disabled, use PORT instead."); |
| 253 | continue; |
| 254 | } |
| 255 | try { |
| 256 | if (pasv == null) |
| 257 | pasv = new ServerSocket(0); |
| 258 | int port = pasv.getLocalPort(); |
| 259 | out.println("227 Entering Passive Mode (127,0,0,1," + |
| 260 | (port >> 8) + "," + (port & 0xff) +")"); |
| 261 | } catch (IOException ssex) { |
| 262 | out.println("425 Can't build data connection: Connection refused."); |
| 263 | } |
| 264 | break; |
| 265 | case PORT: |
| 266 | if (!portEnabled) { |
| 267 | out.println("500 PORT is disabled, 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 + "': command not understood."); |
| 280 | continue; |
| 281 | } |
| 282 | try { |
| 283 | host = new StringBuffer(arg.substring(0,i)); |
| 284 | for (j=0; j < host.length(); j++) |
| 285 | if (host.charAt(j) == ',') |
| 286 | host.setCharAt(j, '.'); |
| 287 | String ports = arg.substring(i+1); |
| 288 | i = ports.indexOf(','); |
| 289 | data_port = Integer.parseInt(ports.substring(0,i)) << 8; |
| 290 | data_port += (Integer.parseInt(ports.substring(i+1))); |
| 291 | data_addr = InetAddress.getByName(host.toString()); |
| 292 | out.println("200 Command okay."); |
| 293 | } catch (Exception ex3) { |
| 294 | data_port = 0; |
| 295 | data_addr = null; |
| 296 | out.println("500 '" + arg + "': command not understood."); |
| 297 | } |
| 298 | break; |
| 299 | case RETR: |
| 300 | { |
| 301 | filename = str.substring(5); |
| 302 | OutputStream dout = getOutDataStream(); |
| 303 | if (dout != null) { |
| 304 | out.println("200 Command okay."); |
| 305 | PrintWriter pout = new PrintWriter(new BufferedOutputStream(dout)); |
| 306 | pout.println("Hello World!"); |
| 307 | pout.flush(); |
| 308 | pout.close(); |
| 309 | list = false; |
| 310 | } else |
| 311 | out.println("425 Can't build data connection: Connection refused."); |
| 312 | } |
| 313 | break; |
| 314 | case NLST: |
| 315 | filename = arg; |
| 316 | case LIST: |
| 317 | { |
| 318 | OutputStream dout = getOutDataStream(); |
| 319 | if (dout != null) { |
| 320 | out.println("200 Command okay."); |
| 321 | PrintWriter pout = new PrintWriter(new BufferedOutputStream(dout)); |
| 322 | pout.println("total 130"); |
| 323 | pout.println("drwxrwxrwt 7 sys sys 577 May 12 03:30 ."); |
| 324 | pout.println("drwxr-xr-x 39 root root 1024 Mar 27 12:55 .."); |
| 325 | pout.println("drwxrwxr-x 2 root root 176 Apr 10 12:02 .X11-pipe"); |
| 326 | pout.println("drwxrwxr-x 2 root root 176 Apr 10 12:02 .X11-unix"); |
| 327 | pout.println("drwxrwxrwx 2 root root 179 Mar 30 15:09 .pcmcia"); |
| 328 | pout.println("drwxrwxrwx 2 jladen staff 117 Mar 30 18:18 .removable"); |
| 329 | pout.println("drwxrwxrwt 2 root root 327 Mar 30 15:08 .rpc_door"); |
| 330 | pout.println("-rw-r--r-- 1 root other 21 May 5 16:59 hello2.txt"); |
| 331 | pout.println("-rw-rw-r-- 1 root sys 5968 Mar 30 15:08 ps_data"); |
| 332 | pout.flush(); |
| 333 | pout.close(); |
| 334 | list = true; |
| 335 | try { |
| 336 | FtpServer.this.wait (); |
| 337 | } catch (Exception e) {} |
| 338 | } else |
| 339 | out.println("425 Can't build data connection: Connection refused."); |
| 340 | } |
| 341 | break; |
| 342 | case STOR: |
| 343 | { |
| 344 | InputStream is = getInDataStream(); |
| 345 | if (is != null) { |
| 346 | out.println("200 Command okay."); |
| 347 | BufferedInputStream din = new BufferedInputStream(is); |
| 348 | int val; |
| 349 | do { |
| 350 | val = din.read(); |
| 351 | } while (val != -1); |
| 352 | din.close(); |
| 353 | } else |
| 354 | out.println("425 Can't build data connection: Connection refused."); |
| 355 | } |
| 356 | break; |
| 357 | } |
| 358 | } catch (IOException ioe) { |
| 359 | ioe.printStackTrace(); |
| 360 | try { |
| 361 | out.close(); |
| 362 | } catch (Exception ex2) { |
| 363 | } |
| 364 | done = true; |
| 365 | } |
| 366 | } |
| 367 | } |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | public FtpServer(int port) { |
| 372 | this.port = port; |
| 373 | try { |
| 374 | server = new ServerSocket(port); |
| 375 | } catch (IOException e) { |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | public FtpServer() { |
| 380 | this(21); |
| 381 | } |
| 382 | |
| 383 | public int getPort() { |
| 384 | if (server != null) |
| 385 | return server.getLocalPort(); |
| 386 | return 0; |
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * A way to tell the server that it can stop. |
| 391 | */ |
| 392 | synchronized public void terminate() { |
| 393 | done = true; |
| 394 | } |
| 395 | |
| 396 | synchronized public void setPortEnabled(boolean ok) { |
| 397 | portEnabled = ok; |
| 398 | } |
| 399 | |
| 400 | synchronized public void setPasvEnabled(boolean ok) { |
| 401 | pasvEnabled = ok; |
| 402 | } |
| 403 | |
| 404 | String getUsername() { |
| 405 | return username; |
| 406 | } |
| 407 | |
| 408 | String getPassword() { |
| 409 | return password; |
| 410 | } |
| 411 | |
| 412 | String pwd() { |
| 413 | return cwd; |
| 414 | } |
| 415 | |
| 416 | String getFilename() { |
| 417 | return filename; |
| 418 | } |
| 419 | |
| 420 | String getType() { |
| 421 | return type; |
| 422 | } |
| 423 | |
| 424 | synchronized boolean getList() { |
| 425 | notify (); |
| 426 | return list; |
| 427 | } |
| 428 | |
| 429 | /* |
| 430 | * All we got to do here is create a ServerSocket and wait for connections. |
| 431 | * When a connection happens, we just have to create a thread that will |
| 432 | * handle it. |
| 433 | */ |
| 434 | public void run() { |
| 435 | try { |
| 436 | Socket client; |
| 437 | for (int i=0; i<2; i++) { |
| 438 | client = server.accept(); |
| 439 | (new FtpServerHandler(client)).run(); |
| 440 | } |
| 441 | server.close(); |
| 442 | } catch(Exception e) { |
| 443 | } |
| 444 | } |
| 445 | } |
| 446 | public static void main(String[] args) throws Exception { |
| 447 | FtpURL test = new FtpURL(); |
| 448 | } |
| 449 | |
| 450 | public FtpURL() throws Exception { |
| 451 | FtpServer server = null; |
| 452 | BufferedReader in = null; |
| 453 | try { |
| 454 | server = new FtpServer(0); |
| 455 | server.start(); |
| 456 | int port = server.getPort(); |
| 457 | |
| 458 | // Now let's check the URL handler |
| 459 | |
| 460 | URL url = new URL("ftp://user:password@localhost:" + port + "/%2Fetc/motd;type=a"); |
| 461 | URLConnection con = url.openConnection(); |
| 462 | in = new BufferedReader(new InputStreamReader(con.getInputStream())); |
| 463 | String s; |
| 464 | do { |
| 465 | s = in.readLine(); |
| 466 | } while (s != null); |
| 467 | if (!("user".equals(server.getUsername()))) |
| 468 | throw new RuntimeException("Inccorect username received"); |
| 469 | if (!("password".equals(server.getPassword()))) |
| 470 | throw new RuntimeException("Inccorect password received"); |
| 471 | if (!("/etc".equals(server.pwd()))) |
| 472 | throw new RuntimeException("Inccorect directory received"); |
| 473 | if (!("motd".equals(server.getFilename()))) |
| 474 | throw new RuntimeException("Inccorect username received"); |
| 475 | if (!("A".equals(server.getType()))) |
| 476 | throw new RuntimeException("Incorrect type received"); |
| 477 | |
| 478 | in.close(); |
| 479 | // We're done! |
| 480 | |
| 481 | // Second URL test |
| 482 | port = server.getPort(); |
| 483 | |
| 484 | // Now let's check the URL handler |
| 485 | |
| 486 | url = new URL("ftp://user2:@localhost:" + port + "/%2Fusr/bin;type=d"); |
| 487 | con = url.openConnection(); |
| 488 | in = new BufferedReader(new InputStreamReader(con.getInputStream())); |
| 489 | do { |
| 490 | s = in.readLine(); |
| 491 | } while (s != null); |
| 492 | if (!server.getList()) |
| 493 | throw new RuntimeException(";type=d didn't generate a NLST"); |
| 494 | if (server.getPassword() != null) |
| 495 | throw new RuntimeException("password should be null!"); |
| 496 | if (! "bin".equals(server.getFilename())) |
| 497 | throw new RuntimeException("Incorrect filename received"); |
| 498 | if (! "/usr".equals(server.pwd())) |
| 499 | throw new RuntimeException("Incorrect pwd received"); |
| 500 | in.close(); |
| 501 | // We're done! |
| 502 | |
| 503 | } catch (Exception e) { |
| 504 | try { |
| 505 | in.close(); |
| 506 | server.terminate(); |
| 507 | server.interrupt(); |
| 508 | } catch(Exception ex) { |
| 509 | } |
| 510 | throw new RuntimeException("FTP support error: " + e.getMessage()); |
| 511 | } |
| 512 | } |
| 513 | } |