root / branches / phpBB-3_0_0 / phpBB / includes / functions_transfer.php
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| 1 | <?php
|
|---|---|
| 2 | /**
|
| 3 | * |
| 4 | * @package phpBB3 |
| 5 | * @version $Id: functions_transfer.php 11360 2011-08-14 20:00:14Z git-gate $ |
| 6 | * @copyright (c) 2005 phpBB Group |
| 7 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | /**
|
| 12 | * @ignore |
| 13 | */ |
| 14 | if (!defined('IN_PHPBB')) |
| 15 | {
|
| 16 | exit;
|
| 17 | } |
| 18 | |
| 19 | /**
|
| 20 | * Transfer class, wrapper for ftp/sftp/ssh |
| 21 | * @package phpBB3 |
| 22 | */ |
| 23 | class transfer |
| 24 | {
|
| 25 | var $connection; |
| 26 | var $host; |
| 27 | var $port; |
| 28 | var $username; |
| 29 | var $password; |
| 30 | var $timeout; |
| 31 | var $root_path; |
| 32 | var $tmp_path; |
| 33 | var $file_perms; |
| 34 | var $dir_perms; |
| 35 | |
| 36 | /**
|
| 37 | * Constructor - init some basic values |
| 38 | */ |
| 39 | function transfer() |
| 40 | {
|
| 41 | global $phpbb_root_path; |
| 42 | |
| 43 | $this->file_perms = 0644; |
| 44 | $this->dir_perms = 0777; |
| 45 | |
| 46 | // We use the store directory as temporary path to circumvent open basedir restrictions
|
| 47 | $this->tmp_path = $phpbb_root_path . 'store/'; |
| 48 | } |
| 49 | |
| 50 | /**
|
| 51 | * Write file to location |
| 52 | */ |
| 53 | function write_file($destination_file = '', $contents = '') |
| 54 | {
|
| 55 | global $phpbb_root_path; |
| 56 | |
| 57 | $destination_file = $this->root_path . str_replace($phpbb_root_path, '', $destination_file); |
| 58 | |
| 59 | // need to create a temp file and then move that temp file.
|
| 60 | // ftp functions can only move files around and can't create.
|
| 61 | // This means that the users will need to have access to write
|
| 62 | // temporary files or have write access on a folder within phpBB
|
| 63 | // like the cache folder. If the user can't do either, then
|
| 64 | // he/she needs to use the fsock ftp method
|
| 65 | $temp_name = tempnam($this->tmp_path, 'transfer_'); |
| 66 | @unlink($temp_name); |
| 67 | |
| 68 | $fp = @fopen($temp_name, 'w'); |
| 69 | |
| 70 | if (!$fp) |
| 71 | {
|
| 72 | trigger_error('Unable to create temporary file ' . $temp_name, E_USER_ERROR); |
| 73 | } |
| 74 | |
| 75 | @fwrite($fp, $contents); |
| 76 | @fclose($fp); |
| 77 | |
| 78 | $result = $this->overwrite_file($temp_name, $destination_file); |
| 79 | |
| 80 | // remove temporary file now
|
| 81 | @unlink($temp_name); |
| 82 | |
| 83 | return $result; |
| 84 | } |
| 85 | |
| 86 | /**
|
| 87 | * Moving file into location. If the destination file already exists it gets overwritten |
| 88 | */ |
| 89 | function overwrite_file($source_file, $destination_file) |
| 90 | {
|
| 91 | /**
|
| 92 | * @todo generally think about overwriting files in another way, by creating a temporary file and then renaming it |
| 93 | * @todo check for the destination file existance too |
| 94 | */ |
| 95 | $this->_delete($destination_file); |
| 96 | $result = $this->_put($source_file, $destination_file); |
| 97 | $this->_chmod($destination_file, $this->file_perms); |
| 98 | |
| 99 | return $result; |
| 100 | } |
| 101 | |
| 102 | /**
|
| 103 | * Create directory structure |
| 104 | */ |
| 105 | function make_dir($dir) |
| 106 | {
|
| 107 | global $phpbb_root_path; |
| 108 | |
| 109 | $dir = str_replace($phpbb_root_path, '', $dir); |
| 110 | $dir = explode('/', $dir); |
| 111 | $dirs = ''; |
| 112 | |
| 113 | for ($i = 0, $total = sizeof($dir); $i < $total; $i++) |
| 114 | {
|
| 115 | $result = true; |
| 116 | |
| 117 | if (strpos($dir[$i], '.') === 0) |
| 118 | {
|
| 119 | continue;
|
| 120 | } |
| 121 | $cur_dir = $dir[$i] . '/'; |
| 122 | |
| 123 | if (!file_exists($phpbb_root_path . $dirs . $cur_dir)) |
| 124 | {
|
| 125 | // create the directory
|
| 126 | $result = $this->_mkdir($dir[$i]); |
| 127 | $this->_chmod($dir[$i], $this->dir_perms); |
| 128 | } |
| 129 | |
| 130 | $this->_chdir($this->root_path . $dirs . $dir[$i]); |
| 131 | $dirs .= $cur_dir; |
| 132 | } |
| 133 | |
| 134 | $this->_chdir($this->root_path); |
| 135 | |
| 136 | /**
|
| 137 | * @todo stack result into array to make sure every path creation has been taken care of |
| 138 | */ |
| 139 | return $result; |
| 140 | } |
| 141 | |
| 142 | /**
|
| 143 | * Copy file from source location to destination location |
| 144 | */ |
| 145 | function copy_file($from_loc, $to_loc) |
| 146 | {
|
| 147 | global $phpbb_root_path; |
| 148 | |
| 149 | $from_loc = ((strpos($from_loc, $phpbb_root_path) !== 0) ? $phpbb_root_path : '') . $from_loc; |
| 150 | $to_loc = $this->root_path . str_replace($phpbb_root_path, '', $to_loc); |
| 151 | |
| 152 | if (!file_exists($from_loc)) |
| 153 | {
|
| 154 | return false; |
| 155 | } |
| 156 | |
| 157 | $result = $this->overwrite_file($from_loc, $to_loc); |
| 158 | |
| 159 | return $result; |
| 160 | } |
| 161 | |
| 162 | /**
|
| 163 | * Remove file |
| 164 | */ |
| 165 | function delete_file($file) |
| 166 | {
|
| 167 | global $phpbb_root_path; |
| 168 | |
| 169 | $file = $this->root_path . str_replace($phpbb_root_path, '', $file); |
| 170 | |
| 171 | return $this->_delete($file); |
| 172 | } |
| 173 | |
| 174 | /**
|
| 175 | * Remove directory |
| 176 | * @todo remove child directories? |
| 177 | */ |
| 178 | function remove_dir($dir) |
| 179 | {
|
| 180 | global $phpbb_root_path; |
| 181 | |
| 182 | $dir = $this->root_path . str_replace($phpbb_root_path, '', $dir); |
| 183 | |
| 184 | return $this->_rmdir($dir); |
| 185 | } |
| 186 | |
| 187 | /**
|
| 188 | * Rename a file or folder |
| 189 | */ |
| 190 | function rename($old_handle, $new_handle) |
| 191 | {
|
| 192 | global $phpbb_root_path; |
| 193 | |
| 194 | $old_handle = $this->root_path . str_replace($phpbb_root_path, '', $old_handle); |
| 195 | |
| 196 | return $this->_rename($old_handle, $new_handle); |
| 197 | } |
| 198 | |
| 199 | /**
|
| 200 | * Check if a specified file exist... |
| 201 | */ |
| 202 | function file_exists($directory, $filename) |
| 203 | {
|
| 204 | global $phpbb_root_path; |
| 205 | |
| 206 | $directory = $this->root_path . str_replace($phpbb_root_path, '', $directory); |
| 207 | |
| 208 | $this->_chdir($directory); |
| 209 | $result = $this->_ls(); |
| 210 | |
| 211 | if ($result !== false && is_array($result)) |
| 212 | {
|
| 213 | return (in_array($filename, $result)) ? true : false; |
| 214 | } |
| 215 | |
| 216 | return false; |
| 217 | } |
| 218 | |
| 219 | /**
|
| 220 | * Open session |
| 221 | */ |
| 222 | function open_session() |
| 223 | {
|
| 224 | return $this->_init(); |
| 225 | } |
| 226 | |
| 227 | /**
|
| 228 | * Close current session |
| 229 | */ |
| 230 | function close_session() |
| 231 | {
|
| 232 | return $this->_close(); |
| 233 | } |
| 234 | |
| 235 | /**
|
| 236 | * Determine methods able to be used |
| 237 | */ |
| 238 | function methods() |
| 239 | {
|
| 240 | $methods = array(); |
| 241 | $disabled_functions = explode(',', @ini_get('disable_functions')); |
| 242 | |
| 243 | if (@extension_loaded('ftp')) |
| 244 | {
|
| 245 | $methods[] = 'ftp'; |
| 246 | } |
| 247 | |
| 248 | if (!in_array('fsockopen', $disabled_functions)) |
| 249 | {
|
| 250 | $methods[] = 'ftp_fsock'; |
| 251 | } |
| 252 | |
| 253 | return $methods; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | /**
|
| 258 | * FTP transfer class |
| 259 | * @package phpBB3 |
| 260 | */ |
| 261 | class ftp extends transfer |
| 262 | {
|
| 263 | /**
|
| 264 | * Standard parameters for FTP session |
| 265 | */ |
| 266 | function ftp($host, $username, $password, $root_path, $port = 21, $timeout = 10) |
| 267 | {
|
| 268 | $this->host = $host; |
| 269 | $this->port = $port; |
| 270 | $this->username = $username; |
| 271 | $this->password = $password; |
| 272 | $this->timeout = $timeout; |
| 273 | |
| 274 | // Make sure $this->root_path is layed out the same way as the $user->page['root_script_path'] value (/ at the end)
|
| 275 | $this->root_path = str_replace('\\', '/', $this->root_path); |
| 276 | |
| 277 | if (!empty($root_path)) |
| 278 | {
|
| 279 | $this->root_path = (($root_path[0] != '/' ) ? '/' : '') . $root_path . ((substr($root_path, -1, 1) == '/') ? '' : '/'); |
| 280 | } |
| 281 | |
| 282 | // Init some needed values
|
| 283 | transfer::transfer(); |
| 284 | |
| 285 | return;
|
| 286 | } |
| 287 | |
| 288 | /**
|
| 289 | * Requests data |
| 290 | */ |
| 291 | function data() |
| 292 | {
|
| 293 | global $user; |
| 294 | |
| 295 | return array( |
| 296 | 'host' => 'localhost', |
| 297 | 'username' => 'anonymous', |
| 298 | 'password' => '', |
| 299 | 'root_path' => $user->page['root_script_path'], |
| 300 | 'port' => 21, |
| 301 | 'timeout' => 10 |
| 302 | ); |
| 303 | } |
| 304 | |
| 305 | /**
|
| 306 | * Init FTP Session |
| 307 | * @access private |
| 308 | */ |
| 309 | function _init() |
| 310 | {
|
| 311 | // connect to the server
|
| 312 | $this->connection = @ftp_connect($this->host, $this->port, $this->timeout); |
| 313 | |
| 314 | if (!$this->connection) |
| 315 | {
|
| 316 | return 'ERR_CONNECTING_SERVER'; |
| 317 | } |
| 318 | |
| 319 | // login to the server
|
| 320 | if (!@ftp_login($this->connection, $this->username, $this->password)) |
| 321 | {
|
| 322 | return 'ERR_UNABLE_TO_LOGIN'; |
| 323 | } |
| 324 | |
| 325 | // attempt to turn pasv mode on
|
| 326 | @ftp_pasv($this->connection, true); |
| 327 | |
| 328 | // change to the root directory
|
| 329 | if (!$this->_chdir($this->root_path)) |
| 330 | {
|
| 331 | return 'ERR_CHANGING_DIRECTORY'; |
| 332 | } |
| 333 | |
| 334 | return true; |
| 335 | } |
| 336 | |
| 337 | /**
|
| 338 | * Create Directory (MKDIR) |
| 339 | * @access private |
| 340 | */ |
| 341 | function _mkdir($dir) |
| 342 | {
|
| 343 | return @ftp_mkdir($this->connection, $dir); |
| 344 | } |
| 345 | |
| 346 | /**
|
| 347 | * Remove directory (RMDIR) |
| 348 | * @access private |
| 349 | */ |
| 350 | function _rmdir($dir) |
| 351 | {
|
| 352 | return @ftp_rmdir($this->connection, $dir); |
| 353 | } |
| 354 | |
| 355 | /**
|
| 356 | * Rename file |
| 357 | * @access private |
| 358 | */ |
| 359 | function _rename($old_handle, $new_handle) |
| 360 | {
|
| 361 | return @ftp_rename($this->connection, $old_handle, $new_handle); |
| 362 | } |
| 363 | |
| 364 | /**
|
| 365 | * Change current working directory (CHDIR) |
| 366 | * @access private |
| 367 | */ |
| 368 | function _chdir($dir = '') |
| 369 | {
|
| 370 | if ($dir && $dir !== '/') |
| 371 | {
|
| 372 | if (substr($dir, -1, 1) == '/') |
| 373 | {
|
| 374 | $dir = substr($dir, 0, -1); |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | return @ftp_chdir($this->connection, $dir); |
| 379 | } |
| 380 | |
| 381 | /**
|
| 382 | * change file permissions (CHMOD) |
| 383 | * @access private |
| 384 | */ |
| 385 | function _chmod($file, $perms) |
| 386 | {
|
| 387 | if (function_exists('ftp_chmod')) |
| 388 | {
|
| 389 | $err = @ftp_chmod($this->connection, $perms, $file); |
| 390 | } |
| 391 | else
|
| 392 | {
|
| 393 | // Unfortunatly CHMOD is not expecting an octal value...
|
| 394 | // We need to transform the integer (which was an octal) to an octal representation (to get the int) and then pass as is. ;)
|
| 395 | $chmod_cmd = 'CHMOD ' . base_convert($perms, 10, 8) . ' ' . $file; |
| 396 | $err = $this->_site($chmod_cmd); |
| 397 | } |
| 398 | |
| 399 | return $err; |
| 400 | } |
| 401 | |
| 402 | /**
|
| 403 | * Upload file to location (PUT) |
| 404 | * @access private |
| 405 | */ |
| 406 | function _put($from_file, $to_file) |
| 407 | {
|
| 408 | // get the file extension
|
| 409 | $file_extension = strtolower(substr(strrchr($to_file, '.'), 1)); |
| 410 | |
| 411 | // We only use the BINARY file mode to cicumvent rewrite actions from ftp server (mostly linefeeds being replaced)
|
| 412 | $mode = FTP_BINARY; |
| 413 | |
| 414 | $to_dir = dirname($to_file); |
| 415 | $to_file = basename($to_file); |
| 416 | $this->_chdir($to_dir); |
| 417 | |
| 418 | $result = @ftp_put($this->connection, $to_file, $from_file, $mode); |
| 419 | $this->_chdir($this->root_path); |
| 420 | |
| 421 | return $result; |
| 422 | } |
| 423 | |
| 424 | /**
|
| 425 | * Delete file (DELETE) |
| 426 | * @access private |
| 427 | */ |
| 428 | function _delete($file) |
| 429 | {
|
| 430 | return @ftp_delete($this->connection, $file); |
| 431 | } |
| 432 | |
| 433 | /**
|
| 434 | * Close ftp session (CLOSE) |
| 435 | * @access private |
| 436 | */ |
| 437 | function _close() |
| 438 | {
|
| 439 | if (!$this->connection) |
| 440 | {
|
| 441 | return false; |
| 442 | } |
| 443 | |
| 444 | return @ftp_quit($this->connection); |
| 445 | } |
| 446 | |
| 447 | /**
|
| 448 | * Return current working directory (CWD) |
| 449 | * At the moment not used by parent class |
| 450 | * @access private |
| 451 | */ |
| 452 | function _cwd() |
| 453 | {
|
| 454 | return @ftp_pwd($this->connection); |
| 455 | } |
| 456 | |
| 457 | /**
|
| 458 | * Return list of files in a given directory (LS) |
| 459 | * @access private |
| 460 | */ |
| 461 | function _ls($dir = './') |
| 462 | {
|
| 463 | $list = @ftp_nlist($this->connection, $dir); |
| 464 | |
| 465 | // See bug #46295 - Some FTP daemons don't like './'
|
| 466 | if ($dir === './') |
| 467 | {
|
| 468 | // Let's try some alternatives
|
| 469 | $list = (empty($list)) ? @ftp_nlist($this->connection, '.') : $list; |
| 470 | $list = (empty($list)) ? @ftp_nlist($this->connection, '') : $list; |
| 471 | } |
| 472 | |
| 473 | // Return on error
|
| 474 | if ($list === false) |
| 475 | {
|
| 476 | return false; |
| 477 | } |
| 478 | |
| 479 | // Remove path if prepended
|
| 480 | foreach ($list as $key => $item) |
| 481 | {
|
| 482 | // Use same separator for item and dir
|
| 483 | $item = str_replace('\\', '/', $item); |
| 484 | $dir = str_replace('\\', '/', $dir); |
| 485 | |
| 486 | if (!empty($dir) && strpos($item, $dir) === 0) |
| 487 | {
|
| 488 | $item = substr($item, strlen($dir)); |
| 489 | } |
| 490 | |
| 491 | $list[$key] = $item; |
| 492 | } |
| 493 | |
| 494 | return $list; |
| 495 | } |
| 496 | |
| 497 | /**
|
| 498 | * FTP SITE command (ftp-only function) |
| 499 | * @access private |
| 500 | */ |
| 501 | function _site($command) |
| 502 | {
|
| 503 | return @ftp_site($this->connection, $command); |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | /**
|
| 508 | * FTP fsock transfer class |
| 509 | * |
| 510 | * @author wGEric |
| 511 | * @package phpBB3 |
| 512 | */ |
| 513 | class ftp_fsock extends transfer |
| 514 | {
|
| 515 | var $data_connection; |
| 516 | |
| 517 | /**
|
| 518 | * Standard parameters for FTP session |
| 519 | */ |
| 520 | function ftp_fsock($host, $username, $password, $root_path, $port = 21, $timeout = 10) |
| 521 | {
|
| 522 | $this->host = $host; |
| 523 | $this->port = $port; |
| 524 | $this->username = $username; |
| 525 | $this->password = $password; |
| 526 | $this->timeout = $timeout; |
| 527 | |
| 528 | // Make sure $this->root_path is layed out the same way as the $user->page['root_script_path'] value (/ at the end)
|
| 529 | $this->root_path = str_replace('\\', '/', $this->root_path); |
| 530 | |
| 531 | if (!empty($root_path)) |
| 532 | {
|
| 533 | $this->root_path = (($root_path[0] != '/' ) ? '/' : '') . $root_path . ((substr($root_path, -1, 1) == '/') ? '' : '/'); |
| 534 | } |
| 535 | |
| 536 | // Init some needed values
|
| 537 | transfer::transfer(); |
| 538 | |
| 539 | return;
|
| 540 | } |
| 541 | |
| 542 | /**
|
| 543 | * Requests data |
| 544 | */ |
| 545 | function data() |
| 546 | {
|
| 547 | global $user; |
| 548 | |
| 549 | return array( |
| 550 | 'host' => 'localhost', |
| 551 | 'username' => 'anonymous', |
| 552 | 'password' => '', |
| 553 | 'root_path' => $user->page['root_script_path'], |
| 554 | 'port' => 21, |
| 555 | 'timeout' => 10 |
| 556 | ); |
| 557 | } |
| 558 | |
| 559 | /**
|
| 560 | * Init FTP Session |
| 561 | * @access private |
| 562 | */ |
| 563 | function _init() |
| 564 | {
|
| 565 | $errno = 0; |
| 566 | $errstr = ''; |
| 567 | |
| 568 | // connect to the server
|
| 569 | $this->connection = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout); |
| 570 | |
| 571 | if (!$this->connection || !$this->_check_command()) |
| 572 | {
|
| 573 | return 'ERR_CONNECTING_SERVER'; |
| 574 | } |
| 575 | |
| 576 | @stream_set_timeout($this->connection, $this->timeout); |
| 577 | |
| 578 | // login
|
| 579 | if (!$this->_send_command('USER', $this->username)) |
| 580 | {
|
| 581 | return 'ERR_UNABLE_TO_LOGIN'; |
| 582 | } |
| 583 | |
| 584 | if (!$this->_send_command('PASS', $this->password)) |
| 585 | {
|
| 586 | return 'ERR_UNABLE_TO_LOGIN'; |
| 587 | } |
| 588 | |
| 589 | // change to the root directory
|
| 590 | if (!$this->_chdir($this->root_path)) |
| 591 | {
|
| 592 | return 'ERR_CHANGING_DIRECTORY'; |
| 593 | } |
| 594 | |
| 595 | return true; |
| 596 | } |
| 597 | |
| 598 | /**
|
| 599 | * Create Directory (MKDIR) |
| 600 | * @access private |
| 601 | */ |
| 602 | function _mkdir($dir) |
| 603 | {
|
| 604 | return $this->_send_command('MKD', $dir); |
| 605 | } |
| 606 | |
| 607 | /**
|
| 608 | * Remove directory (RMDIR) |
| 609 | * @access private |
| 610 | */ |
| 611 | function _rmdir($dir) |
| 612 | {
|
| 613 | return $this->_send_command('RMD', $dir); |
| 614 | } |
| 615 | |
| 616 | /**
|
| 617 | * Rename File |
| 618 | * @access private |
| 619 | */ |
| 620 | function _rename($old_handle, $new_handle) |
| 621 | {
|
| 622 | $this->_send_command('RNFR', $old_handle); |
| 623 | return $this->_send_command('RNTO', $new_handle); |
| 624 | } |
| 625 | |
| 626 | /**
|
| 627 | * Change current working directory (CHDIR) |
| 628 | * @access private |
| 629 | */ |
| 630 | function _chdir($dir = '') |
| 631 | {
|
| 632 | if ($dir && $dir !== '/') |
| 633 | {
|
| 634 | if (substr($dir, -1, 1) == '/') |
| 635 | {
|
| 636 | $dir = substr($dir, 0, -1); |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | return $this->_send_command('CWD', $dir); |
| 641 | } |
| 642 | |
| 643 | /**
|
| 644 | * change file permissions (CHMOD) |
| 645 | * @access private |
| 646 | */ |
| 647 | function _chmod($file, $perms) |
| 648 | {
|
| 649 | // Unfortunatly CHMOD is not expecting an octal value...
|
| 650 | // We need to transform the integer (which was an octal) to an octal representation (to get the int) and then pass as is. ;)
|
| 651 | return $this->_send_command('SITE CHMOD', base_convert($perms, 10, 8) . ' ' . $file); |
| 652 | } |
| 653 | |
| 654 | /**
|
| 655 | * Upload file to location (PUT) |
| 656 | * @access private |
| 657 | */ |
| 658 | function _put($from_file, $to_file) |
| 659 | {
|
| 660 | // We only use the BINARY file mode to cicumvent rewrite actions from ftp server (mostly linefeeds being replaced)
|
| 661 | // 'I' == BINARY
|
| 662 | // 'A' == ASCII
|
| 663 | if (!$this->_send_command('TYPE', 'I')) |
| 664 | {
|
| 665 | return false; |
| 666 | } |
| 667 | |
| 668 | // open the connection to send file over
|
| 669 | if (!$this->_open_data_connection()) |
| 670 | {
|
| 671 | return false; |
| 672 | } |
| 673 | |
| 674 | $this->_send_command('STOR', $to_file, false); |
| 675 | |
| 676 | // send the file
|
| 677 | $fp = @fopen($from_file, 'rb'); |
| 678 | while (!@feof($fp)) |
| 679 | {
|
| 680 | @fwrite($this->data_connection, @fread($fp, 4096)); |
| 681 | } |
| 682 | @fclose($fp); |
| 683 | |
| 684 | // close connection
|
| 685 | $this->_close_data_connection();
|
| 686 | |
| 687 | return $this->_check_command(); |
| 688 | } |
| 689 | |
| 690 | /**
|
| 691 | * Delete file (DELETE) |
| 692 | * @access private |
| 693 | */ |
| 694 | function _delete($file) |
| 695 | {
|
| 696 | return $this->_send_command('DELE', $file); |
| 697 | } |
| 698 | |
| 699 | /**
|
| 700 | * Close ftp session (CLOSE) |
| 701 | * @access private |
| 702 | */ |
| 703 | function _close() |
| 704 | {
|
| 705 | if (!$this->connection) |
| 706 | {
|
| 707 | return false; |
| 708 | } |
| 709 | |
| 710 | return $this->_send_command('QUIT'); |
| 711 | } |
| 712 | |
| 713 | /**
|
| 714 | * Return current working directory (CWD) |
| 715 | * At the moment not used by parent class |
| 716 | * @access private |
| 717 | */ |
| 718 | function _cwd() |
| 719 | {
|
| 720 | $this->_send_command('PWD', '', false); |
| 721 | return preg_replace('#^[0-9]{3} "(.+)" .+\r\n#', '\\1', $this->_check_command(true)); |
| 722 | } |
| 723 | |
| 724 | /**
|
| 725 | * Return list of files in a given directory (LS) |
| 726 | * @access private |
| 727 | */ |
| 728 | function _ls($dir = './') |
| 729 | {
|
| 730 | if (!$this->_open_data_connection()) |
| 731 | {
|
| 732 | return false; |
| 733 | } |
| 734 | |
| 735 | $this->_send_command('NLST', $dir); |
| 736 | |
| 737 | $list = array(); |
| 738 | while (!@feof($this->data_connection)) |
| 739 | {
|
| 740 | $filename = preg_replace('#[\r\n]#', '', @fgets($this->data_connection, 512)); |
| 741 | |
| 742 | if ($filename !== '') |
| 743 | {
|
| 744 | $list[] = $filename; |
| 745 | } |
| 746 | } |
| 747 | $this->_close_data_connection();
|
| 748 | |
| 749 | // Clear buffer
|
| 750 | $this->_check_command();
|
| 751 | |
| 752 | // See bug #46295 - Some FTP daemons don't like './'
|
| 753 | if ($dir === './' && empty($list)) |
| 754 | {
|
| 755 | // Let's try some alternatives
|
| 756 | $list = $this->_ls('.'); |
| 757 | |
| 758 | if (empty($list)) |
| 759 | {
|
| 760 | $list = $this->_ls(''); |
| 761 | } |
| 762 | |
| 763 | return $list; |
| 764 | } |
| 765 | |
| 766 | // Remove path if prepended
|
| 767 | foreach ($list as $key => $item) |
| 768 | {
|
| 769 | // Use same separator for item and dir
|
| 770 | $item = str_replace('\\', '/', $item); |
| 771 | $dir = str_replace('\\', '/', $dir); |
| 772 | |
| 773 | if (!empty($dir) && strpos($item, $dir) === 0) |
| 774 | {
|
| 775 | $item = substr($item, strlen($dir)); |
| 776 | } |
| 777 | |
| 778 | $list[$key] = $item; |
| 779 | } |
| 780 | |
| 781 | return $list; |
| 782 | } |
| 783 | |
| 784 | /**
|
| 785 | * Send a command to server (FTP fsock only function) |
| 786 | * @access private |
| 787 | */ |
| 788 | function _send_command($command, $args = '', $check = true) |
| 789 | {
|
| 790 | if (!empty($args)) |
| 791 | {
|
| 792 | $command = "$command $args"; |
| 793 | } |
| 794 | |
| 795 | fwrite($this->connection, $command . "\r\n"); |
| 796 | |
| 797 | if ($check === true && !$this->_check_command()) |
| 798 | {
|
| 799 | return false; |
| 800 | } |
| 801 | |
| 802 | return true; |
| 803 | } |
| 804 | |
| 805 | /**
|
| 806 | * Opens a connection to send data (FTP fosck only function) |
| 807 | * @access private |
| 808 | */ |
| 809 | function _open_data_connection() |
| 810 | {
|
| 811 | // Try to find out whether we have a IPv4 or IPv6 (control) connection
|
| 812 | if (function_exists('stream_socket_get_name')) |
| 813 | {
|
| 814 | $socket_name = stream_socket_get_name($this->connection, true); |
| 815 | $server_ip = substr($socket_name, 0, strrpos($socket_name, ':')); |
| 816 | } |
| 817 | |
| 818 | if (!isset($server_ip) || preg_match(get_preg_expression('ipv4'), $server_ip)) |
| 819 | {
|
| 820 | // Passive mode
|
| 821 | $this->_send_command('PASV', '', false); |
| 822 | |
| 823 | if (!$ip_port = $this->_check_command(true)) |
| 824 | {
|
| 825 | return false; |
| 826 | } |
| 827 | |
| 828 | // open the connection to start sending the file
|
| 829 | if (!preg_match('#[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+#', $ip_port, $temp)) |
| 830 | {
|
| 831 | // bad ip and port
|
| 832 | return false; |
| 833 | } |
| 834 | |
| 835 | $temp = explode(',', $temp[0]); |
| 836 | $server_ip = $temp[0] . '.' . $temp[1] . '.' . $temp[2] . '.' . $temp[3]; |
| 837 | $server_port = $temp[4] * 256 + $temp[5]; |
| 838 | } |
| 839 | else
|
| 840 | {
|
| 841 | // Extended Passive Mode - RFC2428
|
| 842 | $this->_send_command('EPSV', '', false); |
| 843 | |
| 844 | if (!$epsv_response = $this->_check_command(true)) |
| 845 | {
|
| 846 | return false; |
| 847 | } |
| 848 | |
| 849 | // Response looks like "229 Entering Extended Passive Mode (|||12345|)"
|
| 850 | // where 12345 is the tcp port for the data connection
|
| 851 | if (!preg_match('#\(\|\|\|([0-9]+)\|\)#', $epsv_response, $match)) |
| 852 | {
|
| 853 | return false; |
| 854 | } |
| 855 | $server_port = (int) $match[1]; |
| 856 | |
| 857 | // fsockopen expects IPv6 address in square brackets
|
| 858 | $server_ip = "[$server_ip]"; |
| 859 | } |
| 860 | |
| 861 | $errno = 0; |
| 862 | $errstr = ''; |
| 863 | |
| 864 | if (!$this->data_connection = @fsockopen($server_ip, $server_port, $errno, $errstr, $this->timeout)) |
| 865 | {
|
| 866 | return false; |
| 867 | } |
| 868 | @stream_set_timeout($this->data_connection, $this->timeout); |
| 869 | |
| 870 | return true; |
| 871 | } |
| 872 | |
| 873 | /**
|
| 874 | * Closes a connection used to send data |
| 875 | * @access private |
| 876 | */ |
| 877 | function _close_data_connection() |
| 878 | {
|
| 879 | return @fclose($this->data_connection); |
| 880 | } |
| 881 | |
| 882 | /**
|
| 883 | * Check to make sure command was successful (FTP fsock only function) |
| 884 | * @access private |
| 885 | */ |
| 886 | function _check_command($return = false) |
| 887 | {
|
| 888 | $response = ''; |
| 889 | |
| 890 | do
|
| 891 | {
|
| 892 | $result = @fgets($this->connection, 512); |
| 893 | $response .= $result; |
| 894 | } |
| 895 | while (substr($result, 3, 1) !== ' '); |
| 896 | |
| 897 | if (!preg_match('#^[123]#', $response)) |
| 898 | {
|
| 899 | return false; |
| 900 | } |
| 901 | |
| 902 | return ($return) ? $response : true; |
| 903 | } |
| 904 | } |
| 905 | |
| 906 | ?> |