xref: /PHP-8.1/ext/ftp/tests/server.inc (revision 30141828)
1<?php
2
3$socket = null;
4$errno = 0;
5$context = stream_context_create(array('ssl' => array('local_cert' => dirname(__FILE__).'/cert.pem')));
6
7$socket = stream_socket_server("tcp://127.0.0.1:0", $errno, $errstr, STREAM_SERVER_BIND|STREAM_SERVER_LISTEN, $context);
8if (!$socket) {
9    echo "$errstr ($errno)\n";
10    die("could not start/bind the ftp server\n");
11}
12
13$socket_name = stream_socket_get_name($socket, false);
14$port = (int) substr($socket_name, strrpos($socket_name, ':') + 1);
15
16$pid = pcntl_fork();
17
18if ($pid) {
19    function dump_and_exit($buf)
20    {
21        var_dump($buf);
22        exit;
23    }
24
25    function anonymous()
26    {
27        return $GLOBALS['user'] === 'anonymous';
28    }
29
30    /* quick&dirty realpath() like function */
31    function change_dir($dir)
32    {
33        global $cwd;
34
35        if ($dir[0] == '/') {
36            $cwd = $dir;
37            return;
38        }
39
40        $cwd = "$cwd/$dir";
41
42        do {
43            $old = $cwd;
44            $cwd = preg_replace('@/?[^/]+/\.\.@', '', $cwd);
45        } while ($old != $cwd);
46
47        $cwd = strtr($cwd, array('//' => '/'));
48        if (!$cwd) $cwd = '/';
49    }
50
51    $s = stream_socket_accept($socket);
52
53    if (!$s) die("Error accepting a new connection\n");
54
55    register_shutdown_function(function() use($pid, $s) {
56        fclose($s);
57        pcntl_waitpid($pid, $status);
58    });
59
60    fputs($s, "220----- PHP FTP server 0.3 -----\r\n220 Service ready\r\n");
61    $buf = fread($s, 2048);
62
63    function user_auth($buf) {
64        global $user, $s, $ssl, $bug37799;
65
66        if (!empty($ssl)) {
67            if ($buf !== "AUTH TLS\r\n") {
68                fputs($s, "500 Syntax error, command unrecognized.\r\n");
69                dump_and_exit($buf);
70            }
71
72            if (empty($bug37799)) {
73                fputs($s, "234 auth type accepted\r\n");
74            } else {
75                fputs($s, "666 dummy\r\n");
76                sleep(1);
77                fputs($s, "666 bogus msg\r\n");
78                exit;
79            }
80
81            if (!stream_socket_enable_crypto($s, true, STREAM_CRYPTO_METHOD_SSLv23_SERVER)) {
82                die("SSLv23 handshake failed.\n");
83            }
84
85            if (!preg_match('/^PBSZ \d+\r\n$/', $buf = fread($s, 2048))) {
86                fputs($s, "501 bogus data\r\n");
87                dump_and_exit($buf);
88            }
89
90            fputs($s, "200 OK\r\n");
91            $buf = fread($s, 2048);
92
93            if ($buf !== "PROT P\r\n") {
94                fputs($s, "504 Wrong protection.\r\n");
95                dump_and_exit($buf);
96            }
97
98            fputs($s, "200 OK\r\n");
99
100            $buf = fread($s, 2048);
101        }
102
103        if ($buf == "AUTH TLS\r\n") {
104           fputs($s, "500 not supported.\r\n");
105           return ;
106        } else if (!preg_match('/^USER (\w+)\r\n$/', $buf, $m)) {
107            fputs($s, "500 Syntax error, command unrecognized.\r\n");
108            dump_and_exit($buf);
109        }
110        $user = $m[1];
111        if ($user !== 'user' && $user !== 'anonymous') {
112            fputs($s, "530 Not logged in.\r\n");
113            exit;
114        }
115
116        if (anonymous()) {
117            fputs($s, "230 Anonymous user logged in\r\n");
118
119        } else {
120            fputs($s, "331 User name ok, need password\r\n");
121
122            if (!preg_match('/^PASS (\w+)\r\n$/', $buf = fread($s, 100), $m)) {
123                fputs($s, "500 Syntax error, command unrecognized.\r\n");
124                dump_and_exit($buf);
125            }
126
127            $pass = $m[1];
128            if ($pass === 'pass') {
129                fputs($s, "230 User logged in\r\n");
130            } else {
131                fputs($s, "530 Not logged in.\r\n");
132                exit;
133            }
134        }
135    }
136
137    user_auth($buf);
138
139    $cwd = '/';
140    $num_bogus_cmds = 0;
141
142    while($buf = fread($s, 4098)) {
143        if (!empty($bogus)) {
144            fputs($s, "502 Command not implemented (".$num_bogus_cmds++.").\r\n");
145
146        } else if ($buf === "HELP\r\n") {
147            fputs($s, "214-There is help available for the following commands:\r\n");
148            fputs($s, " USER\r\n");
149            fputs($s, " HELP\r\n");
150            fputs($s, "214 end of list\r\n");
151
152        } elseif ($buf === "HELP HELP\r\n") {
153            fputs($s, "214 Syntax: HELP [<SP> <string>] <CRLF>\r\n");
154
155        } elseif ($buf === "PWD\r\n") {
156            fputs($s, "257 \"$cwd\" is current directory.\r\n");
157
158        } elseif ($buf === "CDUP\r\n") {
159            change_dir('..');
160            fputs($s, "250 CDUP command successful.\r\n");
161
162        } elseif ($buf === "SYST\r\n") {
163            if (isset($bug27809)) {
164                fputs($s, "215   OS/400 is the remote operating system. The TCP/IP version is \"V5R2M0\"\r\n");
165            } elseif (isset($bug79100)) {
166                // do nothing so test hits timeout
167            } elseif (isset($bug80901)) {
168                fputs($s, "\r\n" . str_repeat("*", 4096) . "\r\n");
169            } else {
170                fputs($s, "215 UNIX Type: L8.\r\n");
171            }
172
173        } elseif ($buf === "TYPE A\r\n") {
174            $ascii = true;
175            fputs($s, "200 OK\r\n");
176
177        } elseif ($buf === "AUTH SSL\r\n") {
178            $ascii = true;
179            fputs($s, "500 not supported\r\n");
180
181        } elseif ($buf === "TYPE I\r\n") {
182            $ascii = false;
183            fputs($s, "200 OK\r\n");
184
185        } elseif ($buf === "QUIT\r\n") {
186            fputs($s, "221 Bye\r\n");
187            break;
188
189        } elseif (preg_match("~^PORT (\d+),(\d+),(\d+),(\d+),(\d+),(\d+)\r\n$~", $buf, $m)) {
190            $host = "$m[1].$m[2].$m[3].$m[4]";
191            $port = ((int)$m[5] << 8) + (int)$m[6];
192            fputs($s, "200 OK.\r\n");
193
194        } elseif (preg_match("~^STOR ([\w/.-]+)\r\n$~", $buf, $m)) {
195            fputs($s, "150 File status okay; about to open data connection\r\n");
196
197            if(empty($pasv))
198            {
199                if (!$fs = stream_socket_client("tcp://$host:$port")) {
200                    fputs($s, "425 Can't open data connection\r\n");
201                    continue;
202                }
203
204                $data = stream_get_contents($fs);
205                $orig = file_get_contents(dirname(__FILE__).'/'.$m[1]);
206
207
208                if (isset($ascii) && !$ascii && $orig === $data) {
209                    fputs($s, "226 Closing data Connection.\r\n");
210
211                } elseif ((!empty($ascii) || isset($bug39583)) && $data === strtr($orig, array("\r\n" => "\n", "\r" => "\n", "\n" => "\r\n"))) {
212                    fputs($s, "226 Closing data Connection.\r\n");
213
214                } else {
215                    var_dump($data);
216                    var_dump($orig);
217                    fputs($s, "552 Requested file action aborted.\r\n");
218                }
219                fclose($fs);
220            }else{
221                $data = file_get_contents('nm2.php');
222                $orig = file_get_contents(dirname(__FILE__).'/'.$m[1]);
223                if ( $orig === $data) {
224                    fputs($s, "226 Closing data Connection.\r\n");
225
226                } else {
227                    var_dump($data);
228                    var_dump($orig);
229                    fputs($s, "552 Requested file action aborted.\r\n");
230                }
231            }
232
233        } elseif (preg_match("~^APPE ([\w/.-]+)\r\n$~", $buf, $m)) {
234            fputs($s, "150 File status okay; about to open data connection\r\n");
235
236            if(empty($pasv))
237            {
238                if (!$fs = stream_socket_client("tcp://$host:$port")) {
239                    fputs($s, "425 Can't open data connection\r\n");
240                    continue;
241                }
242
243                $data = stream_get_contents($fs);
244                file_put_contents(__DIR__.'/'.$m[1], $data, FILE_APPEND);
245                fputs($s, "226 Closing data Connection.\r\n");
246                fclose($fs);
247            }else{
248                $data = stream_get_contents($fs);
249                file_put_contents(__DIR__.'/'.$m[1], $data, FILE_APPEND);
250                fputs($s, "226 Closing data Connection.\r\n");
251                fclose($fs);
252            }
253
254        }elseif (preg_match("~^CWD ([A-Za-z./]+)\r\n$~", $buf, $m)) {
255            if (isset($bug77680)) {
256                fputs($s, "550 Directory change to $m[1] failed: file does not exist\r\n");
257                var_dump($buf);
258            } else {
259                change_dir($m[1]);
260                fputs($s, "250 CWD command successful.\r\n");
261            }
262
263        } elseif (preg_match("~^NLST(?: ([A-Za-z./]+))?\r\n$~", $buf, $m)) {
264
265            if (isset($m[1]) && (($m[1] === 'bogusdir') || ($m[1] === '/bogusdir'))) {
266                fputs($s, "250 $m[1]: No such file or directory\r\n");
267                continue;
268            }
269
270            // there are some servers that don't open the ftp-data socket if there's nothing to send
271            if (isset($bug39458) && isset($m[1]) && $m[1] === 'emptydir') {
272                fputs($s, "226 Transfer complete.\r\n");
273                continue;
274            }
275
276            if (empty($pasv)) {
277                fputs($s, "150 File status okay; about to open data connection\r\n");
278                if (!$fs = stream_socket_client("tcp://$host:$port")) {
279                    fputs($s, "425 Can't open data connection\r\n");
280                    continue;
281                }
282            } else {
283                fputs($s, "125 Data connection already open; transfer starting.\r\n");
284                $fs=$pasvs;
285            }
286
287
288            if ((!empty($ssl)) && (!stream_socket_enable_crypto($pasvs, true, STREAM_CRYPTO_METHOD_SSLv23_SERVER))) {
289                die("SSLv23 handshake failed.\n");
290            }
291
292            if (empty($m[1]) || $m[1] !== 'emptydir') {
293                fputs($fs, "file1\r\nfile1\r\nfile\nb0rk\r\n");
294            }
295
296            fputs($s, "226 Closing data Connection.\r\n");
297            fclose($fs);
298
299        } elseif (preg_match("~^MKD ([A-Za-z./]+)\r\n$~", $buf, $m)) {
300            if (isset($bug7216)) {
301                fputs($s, "257 OK.\r\n");
302            } else {
303                if (isset($bug77680)) {
304                    var_dump($buf);
305                }
306                fputs($s, "257 \"/path/to/ftproot$cwd$m[1]\" created.\r\n");
307            }
308
309        } elseif (preg_match('/^USER /', $buf)) {
310            user_auth($buf);
311
312        } elseif (preg_match('/^MDTM ([\w\h]+)/', $buf, $matches)) {
313            switch ($matches [1]){
314                case "A":
315                fputs($s, "213 19980615100045.014\r\n");
316                break;
317                case "B":
318                fputs($s, "213 19980615100045.014\r\n");
319                break;
320                case "C":
321                fputs($s, "213 19980705132316\r\n");
322                break;
323                case "19990929043300 File6":
324                fputs($s, "213 19991005213102\r\n");
325                break;
326                default :
327                fputs($s, "550 No file named \"{$matches [1]}\"\r\n");
328                break;
329            }
330        }elseif (preg_match('/^RETR ([\/]*[\w\h]+)/', $buf, $matches)) {
331            if(!empty($pasv)){
332                ;
333            }
334            else if (!$fs = stream_socket_client("tcp://$host:$port")) {
335                fputs($s, "425 Can't open data connection\r\n");
336                continue;
337            }
338
339            switch($matches[1]){
340
341                case "pasv":
342                    fputs($s, "150 File status okay; about to open data connection.\r\n");
343                    //the data connection is handled in another forked process
344                    // called from outside this while loop
345                    fputs($s, "226 Closing data Connection.\r\n");
346                    break;
347                case "a story":
348                    fputs($s, "150 File status okay; about to open data connection.\r\n");
349                    fputs($fs, "For sale: baby shoes, never worn.\r\n");
350                    fputs($s, "226 Closing data Connection.\r\n");
351                    break;
352                case "binary data":
353                    fputs($s, "150 File status okay; about to open data connection.\r\n");
354                    $transfer_type = $ascii? 'ASCII' : 'BINARY' ;
355                    fputs($fs, $transfer_type."Foo\0Bar\r\n");
356                    fputs($s, "226 Closing data Connection.\r\n");
357                    break;
358                case "fget":
359                    fputs($s, "150 File status okay; about to open data connection.\r\n");
360                    $transfer_type = $ascii? 'ASCII' : 'BINARY' ;
361                    fputs($fs, $transfer_type."FooBar\r\n");
362                    fputs($s, "226 Closing data Connection.\r\n");
363                    break;
364                case "fgetresume":
365                    fputs($s, "150 File status okay; about to open data connection.\r\n");
366                    $transfer_type = $ascii? 'ASCII' : 'BINARY' ;
367                    fputs($fs, "Bar\r\n");
368                    fputs($s, "226 Closing data Connection.\r\n");
369                    break;
370                case "fget_large":
371                    fputs($s, "150 File status okay; about to open data connection.\r\n");
372                    $transfer_type = $ascii? 'ASCII' : 'BINARY' ;
373                    if ($GLOBALS['rest_pos'] == '5368709119') {
374                        fputs($fs, "X");
375                    } else {
376                        fputs($fs, "Y");
377                    }
378                    fputs($s, "226 Closing data Connection.\r\n");
379                    break;
380                case "mediumfile":
381                    fputs($s, "150 File status okay; about to open data connection.\r\n");
382                    for($i = 0; $i < 150; $i++){
383                        fputs($fs, "This is line $i of the test data.\n");
384                    }
385                    fputs($s, "226 Closing data Connection.\r\n");
386                    break;
387                case "/bug73457":
388                    fputs($s, "150 File status okay; about to open data connection.\r\n");
389                    break;
390                case "gh10521":
391                    // Just a side channel for getting the received file size.
392                    fputs($s, "425 Can't open data connection (".$GLOBALS['rest_pos'].").\r\n");
393                    break;
394
395                default:
396                    fputs($s, "550 {$matches[1]}: No such file or directory \r\n");
397                    break;
398            }
399            if(isset($fs))
400                fclose($fs);
401
402
403        }elseif (preg_match('/^PASV/', $buf, $matches)) {
404            $pasv=true;
405            $host = "127.0.0.1";
406            $i=0;
407
408            if (empty($bug73457)) {
409                if (!empty($ssl)) {
410                    $soc = stream_socket_server("tcp://127.0.0.1:0", $errno, $errstr, STREAM_SERVER_BIND|STREAM_SERVER_LISTEN, $context);
411                } else {
412                    $soc = stream_socket_server("tcp://127.0.0.1:0");
413                }
414                if (!$soc) {
415                    echo "$errstr ($errno)\n";
416                    die("could not bind passive port\n");
417                }
418
419                $soc_name = stream_socket_get_name($soc, false);
420                $pasv_port = (int) substr($soc_name, strrpos($soc_name, ':') + 1);
421            } else {
422                $pasv_port = 1234;
423            }
424
425            $p2 = $pasv_port % ((int) 1 << 8);
426            $p1 = ($pasv_port-$p2)/((int) 1 << 8);
427            fputs($s, "227 Entering Passive Mode. (127,0,0,1,{$p1},{$p2})\r\n");
428
429            if (empty($bug73457)) {
430                $pasvs = stream_socket_accept($soc,10);
431            }
432
433        } elseif (preg_match('/^EPSV/', $buf, $matches)) {
434            fputs($s, "550 Extended passsive mode not supported.\r\n");
435        } elseif (preg_match('/^SITE EXEC/', $buf, $matches)) {
436            fputs($s, "200 OK\r\n");
437
438        } elseif (preg_match('/^RMD/', $buf, $matches)) {
439            fputs($s, "250 OK\r\n");
440
441        } elseif (preg_match('/^SITE CHMOD/', $buf, $matches)) {
442            fputs($s, "200 OK\r\n");
443
444        } elseif (preg_match('/^DELE ([\w\h]+)/', $buf, $matches)) {
445            if (isset($matches[1]) && in_array($matches[1], ['file1', "file\nb0rk"])){
446                fputs($s, "250 Delete successful\r\n");
447            } else {
448                fputs($s, "550 No such file or directory\r\n");
449            }
450        } elseif (preg_match('/^ALLO (\d+)/', $buf, $matches)) {
451            fputs($s, "200 " . $matches[1] . " bytes allocated\r\n");
452
453        }elseif (preg_match('/^LIST www\//', $buf, $matches)) {
454            fputs($s, "226 Transfer complete\r\n");
455
456        }elseif (preg_match('/^LIST no_exists\//', $buf, $matches)) {
457            fputs($s, "425 Error establishing connection\r\n");
458
459        }elseif (preg_match('/^REST (\d+)/', $buf, $matches)) {
460            $GLOBALS['rest_pos'] = $matches[1];
461            fputs($s, "350 OK\r\n");
462        }elseif (preg_match('/^SIZE largefile/', $buf)) {
463            fputs($s, "213 5368709120\r\n");
464        }elseif (preg_match('/^RNFR existing_file/', $buf, $matches)) {
465            fputs($s, "350 File or directory exists, ready for destination name\r\n");
466        }elseif (preg_match('/^RNFR nonexisting_file/', $buf, $matches)) {
467            fputs($s, "550 No such file or directory\r\n");
468        }elseif (preg_match('/^RNTO nonexisting_file/', $buf, $matches)) {
469            fputs($s, "250 Rename successful\r\n");
470        }elseif (preg_match('/^MLSD no_exists\//', $buf, $matches)) {
471            fputs($s, "425 Error establishing connection\r\n");
472        }elseif (preg_match("~^MLSD(?: ([A-Za-z./]+))?\r\n$~", $buf, $m)) {
473
474            if(isset($m[1]) && (($m[1] === 'bogusdir') || ($m[1] === '/bogusdir'))) {
475                fputs($s, "250 $m[1]: No such file or directory\r\n");
476                continue;
477            }
478
479            // there are some servers that don't open the ftp-data socket if there's nothing to send
480            if(isset($bug39458) && isset($m[1]) && $m[1] === 'emptydir') {
481                fputs($s, "226 Transfer complete.\r\n");
482                continue;
483            }
484
485            if(empty($pasv)) {
486                fputs($s, "150 File status okay; about to open data connection\r\n");
487                if(!$fs = stream_socket_client("tcp://$host:$port")) {
488                    fputs($s, "425 Can't open data connection\r\n");
489                    continue;
490                }
491            } else {
492                fputs($s, "125 Data connection already open; transfer starting.\r\n");
493                $fs = $pasvs;
494            }
495
496            if((!empty($ssl)) && (!stream_socket_enable_crypto($pasvs, TRUE, STREAM_CRYPTO_METHOD_SSLv23_SERVER))) {
497                die("SSLv23 handshake failed.\n");
498            }
499
500            if(empty($m[1]) || $m[1] !== 'emptydir') {
501                fputs($fs, "modify=20170127230002;perm=flcdmpe;type=cdir;unique=811U4340002;UNIX.group=33;UNIX.mode=0755;UNIX.owner=33; .\r\n");
502                fputs($fs, "modify=20170127230002;perm=flcdmpe;type=pdir;unique=811U4340002;UNIX.group=33;UNIX.mode=0755;UNIX.owner=33; ..\r\n");
503                fputs($fs, "modify=20170126121225;perm=adfrw;size=4729;type=file;unique=811U4340CB9;UNIX.group=33;UNIX.mode=0644;UNIX.owner=33; foobar\r\n");
504                fputs($fs, "fact=val=ue;empty=; path;name\r\n");
505                fputs($fs, "no_space\r\n");
506                fputs($fs, "no_semi pathname\r\n");
507                fputs($fs, "no_eq; pathname\r\n");
508            }
509
510            fputs($s, "226 Closing data Connection.\r\n");
511            fclose($fs);
512        }elseif (preg_match('/^SIZE \/bug73457/', $buf)) {
513            fputs($s, "213 10\r\n");
514        }elseif (preg_match("/^SITE/", $buf)) {
515            fputs($s, "500 Syntax error, command unrecognized.\r\n");
516        }else {
517            dump_and_exit($buf);
518        }
519    }
520    exit;
521}
522
523fclose($socket);
524?>
525