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1 <?php 2 /** 3 * WordPress FTP Sockets Filesystem. 4 * 5 * @package WordPress 6 * @subpackage Filesystem 7 */ 8 9 /** 10 * WordPress Filesystem Class for implementing FTP Sockets. 11 * 12 * @since 2.5.0 13 * 14 * @see WP_Filesystem_Base 15 */ 16 class WP_Filesystem_ftpsockets extends WP_Filesystem_Base { 17 18 /** 19 * @since 2.5.0 20 * @var ftp 21 */ 22 public $ftp; 23 24 /** 25 * Constructor. 26 * 27 * @since 2.5.0 28 * 29 * @param array $opt 30 */ 31 public function __construct( $opt = '' ) { 32 $this->method = 'ftpsockets'; 33 $this->errors = new WP_Error(); 34 35 // Check if possible to use ftp functions. 36 if ( ! require_once ABSPATH . 'wp-admin/includes/class-ftp.php' ) { 37 return; 38 } 39 40 $this->ftp = new ftp(); 41 42 if ( empty( $opt['port'] ) ) { 43 $this->options['port'] = 21; 44 } else { 45 $this->options['port'] = (int) $opt['port']; 46 } 47 48 if ( empty( $opt['hostname'] ) ) { 49 $this->errors->add( 'empty_hostname', __( 'FTP hostname is required' ) ); 50 } else { 51 $this->options['hostname'] = $opt['hostname']; 52 } 53 54 // Check if the options provided are OK. 55 if ( empty( $opt['username'] ) ) { 56 $this->errors->add( 'empty_username', __( 'FTP username is required' ) ); 57 } else { 58 $this->options['username'] = $opt['username']; 59 } 60 61 if ( empty( $opt['password'] ) ) { 62 $this->errors->add( 'empty_password', __( 'FTP password is required' ) ); 63 } else { 64 $this->options['password'] = $opt['password']; 65 } 66 } 67 68 /** 69 * Connects filesystem. 70 * 71 * @since 2.5.0 72 * 73 * @return bool True on success, false on failure. 74 */ 75 public function connect() { 76 if ( ! $this->ftp ) { 77 return false; 78 } 79 80 $this->ftp->setTimeout( FS_CONNECT_TIMEOUT ); 81 82 if ( ! $this->ftp->SetServer( $this->options['hostname'], $this->options['port'] ) ) { 83 $this->errors->add( 84 'connect', 85 sprintf( 86 /* translators: %s: hostname:port */ 87 __( 'Failed to connect to FTP Server %s' ), 88 $this->options['hostname'] . ':' . $this->options['port'] 89 ) 90 ); 91 92 return false; 93 } 94 95 if ( ! $this->ftp->connect() ) { 96 $this->errors->add( 97 'connect', 98 sprintf( 99 /* translators: %s: hostname:port */ 100 __( 'Failed to connect to FTP Server %s' ), 101 $this->options['hostname'] . ':' . $this->options['port'] 102 ) 103 ); 104 105 return false; 106 } 107 108 if ( ! $this->ftp->login( $this->options['username'], $this->options['password'] ) ) { 109 $this->errors->add( 110 'auth', 111 sprintf( 112 /* translators: %s: Username. */ 113 __( 'Username/Password incorrect for %s' ), 114 $this->options['username'] 115 ) 116 ); 117 118 return false; 119 } 120 121 $this->ftp->SetType( FTP_BINARY ); 122 $this->ftp->Passive( true ); 123 $this->ftp->setTimeout( FS_TIMEOUT ); 124 125 return true; 126 } 127 128 /** 129 * Reads entire file into a string. 130 * 131 * @since 2.5.0 132 * 133 * @param string $file Name of the file to read. 134 * @return string|false Read data on success, false if no temporary file could be opened, 135 * or if the file couldn't be retrieved. 136 */ 137 public function get_contents( $file ) { 138 if ( ! $this->exists( $file ) ) { 139 return false; 140 } 141 142 $tempfile = wp_tempnam( $file ); 143 $temphandle = fopen( $tempfile, 'w+' ); 144 145 if ( ! $temphandle ) { 146 unlink( $tempfile ); 147 return false; 148 } 149 150 mbstring_binary_safe_encoding(); 151 152 if ( ! $this->ftp->fget( $temphandle, $file ) ) { 153 fclose( $temphandle ); 154 unlink( $tempfile ); 155 156 reset_mbstring_encoding(); 157 158 return ''; // Blank document. File does exist, it's just blank. 159 } 160 161 reset_mbstring_encoding(); 162 163 fseek( $temphandle, 0 ); // Skip back to the start of the file being written to. 164 $contents = ''; 165 166 while ( ! feof( $temphandle ) ) { 167 $contents .= fread( $temphandle, 8 * KB_IN_BYTES ); 168 } 169 170 fclose( $temphandle ); 171 unlink( $tempfile ); 172 173 return $contents; 174 } 175 176 /** 177 * Reads entire file into an array. 178 * 179 * @since 2.5.0 180 * 181 * @param string $file Path to the file. 182 * @return array|false File contents in an array on success, false on failure. 183 */ 184 public function get_contents_array( $file ) { 185 return explode( "\n", $this->get_contents( $file ) ); 186 } 187 188 /** 189 * Writes a string to a file. 190 * 191 * @since 2.5.0 192 * 193 * @param string $file Remote path to the file where to write the data. 194 * @param string $contents The data to write. 195 * @param int|false $mode Optional. The file permissions as octal number, usually 0644. 196 * Default false. 197 * @return bool True on success, false on failure. 198 */ 199 public function put_contents( $file, $contents, $mode = false ) { 200 $tempfile = wp_tempnam( $file ); 201 $temphandle = @fopen( $tempfile, 'w+' ); 202 203 if ( ! $temphandle ) { 204 unlink( $tempfile ); 205 return false; 206 } 207 208 // The FTP class uses string functions internally during file download/upload. 209 mbstring_binary_safe_encoding(); 210 211 $bytes_written = fwrite( $temphandle, $contents ); 212 213 if ( false === $bytes_written || strlen( $contents ) !== $bytes_written ) { 214 fclose( $temphandle ); 215 unlink( $tempfile ); 216 217 reset_mbstring_encoding(); 218 219 return false; 220 } 221 222 fseek( $temphandle, 0 ); // Skip back to the start of the file being written to. 223 224 $ret = $this->ftp->fput( $file, $temphandle ); 225 226 reset_mbstring_encoding(); 227 228 fclose( $temphandle ); 229 unlink( $tempfile ); 230 231 $this->chmod( $file, $mode ); 232 233 return $ret; 234 } 235 236 /** 237 * Gets the current working directory. 238 * 239 * @since 2.5.0 240 * 241 * @return string|false The current working directory on success, false on failure. 242 */ 243 public function cwd() { 244 $cwd = $this->ftp->pwd(); 245 246 if ( $cwd ) { 247 $cwd = trailingslashit( $cwd ); 248 } 249 250 return $cwd; 251 } 252 253 /** 254 * Changes current directory. 255 * 256 * @since 2.5.0 257 * 258 * @param string $dir The new current directory. 259 * @return bool True on success, false on failure. 260 */ 261 public function chdir( $dir ) { 262 return $this->ftp->chdir( $dir ); 263 } 264 265 /** 266 * Changes filesystem permissions. 267 * 268 * @since 2.5.0 269 * 270 * @param string $file Path to the file. 271 * @param int|false $mode Optional. The permissions as octal number, usually 0644 for files, 272 * 0755 for directories. Default false. 273 * @param bool $recursive Optional. If set to true, changes file permissions recursively. 274 * Default false. 275 * @return bool True on success, false on failure. 276 */ 277 public function chmod( $file, $mode = false, $recursive = false ) { 278 if ( ! $mode ) { 279 if ( $this->is_file( $file ) ) { 280 $mode = FS_CHMOD_FILE; 281 } elseif ( $this->is_dir( $file ) ) { 282 $mode = FS_CHMOD_DIR; 283 } else { 284 return false; 285 } 286 } 287 288 // chmod any sub-objects if recursive. 289 if ( $recursive && $this->is_dir( $file ) ) { 290 $filelist = $this->dirlist( $file ); 291 292 foreach ( (array) $filelist as $filename => $filemeta ) { 293 $this->chmod( $file . '/' . $filename, $mode, $recursive ); 294 } 295 } 296 297 // chmod the file or directory. 298 return $this->ftp->chmod( $file, $mode ); 299 } 300 301 /** 302 * Gets the file owner. 303 * 304 * @since 2.5.0 305 * 306 * @param string $file Path to the file. 307 * @return string|false Username of the owner on success, false on failure. 308 */ 309 public function owner( $file ) { 310 $dir = $this->dirlist( $file ); 311 312 return $dir[ $file ]['owner']; 313 } 314 315 /** 316 * Gets the permissions of the specified file or filepath in their octal format. 317 * 318 * @since 2.5.0 319 * 320 * @param string $file Path to the file. 321 * @return string Mode of the file (the last 3 digits). 322 */ 323 public function getchmod( $file ) { 324 $dir = $this->dirlist( $file ); 325 326 return $dir[ $file ]['permsn']; 327 } 328 329 /** 330 * Gets the file's group. 331 * 332 * @since 2.5.0 333 * 334 * @param string $file Path to the file. 335 * @return string|false The group on success, false on failure. 336 */ 337 public function group( $file ) { 338 $dir = $this->dirlist( $file ); 339 340 return $dir[ $file ]['group']; 341 } 342 343 /** 344 * Copies a file. 345 * 346 * @since 2.5.0 347 * 348 * @param string $source Path to the source file. 349 * @param string $destination Path to the destination file. 350 * @param bool $overwrite Optional. Whether to overwrite the destination file if it exists. 351 * Default false. 352 * @param int|false $mode Optional. The permissions as octal number, usually 0644 for files, 353 * 0755 for dirs. Default false. 354 * @return bool True on success, false on failure. 355 */ 356 public function copy( $source, $destination, $overwrite = false, $mode = false ) { 357 if ( ! $overwrite && $this->exists( $destination ) ) { 358 return false; 359 } 360 361 $content = $this->get_contents( $source ); 362 363 if ( false === $content ) { 364 return false; 365 } 366 367 return $this->put_contents( $destination, $content, $mode ); 368 } 369 370 /** 371 * Moves a file or directory. 372 * 373 * After moving files or directories, OPcache will need to be invalidated. 374 * 375 * If moving a directory fails, `copy_dir()` can be used for a recursive copy. 376 * 377 * Use `move_dir()` for moving directories with OPcache invalidation and a 378 * fallback to `copy_dir()`. 379 * 380 * @since 2.5.0 381 * 382 * @param string $source Path to the source file or directory. 383 * @param string $destination Path to the destination file or directory. 384 * @param bool $overwrite Optional. Whether to overwrite the destination if it exists. 385 * Default false. 386 * @return bool True on success, false on failure. 387 */ 388 public function move( $source, $destination, $overwrite = false ) { 389 return $this->ftp->rename( $source, $destination ); 390 } 391 392 /** 393 * Deletes a file or directory. 394 * 395 * @since 2.5.0 396 * 397 * @param string $file Path to the file or directory. 398 * @param bool $recursive Optional. If set to true, deletes files and folders recursively. 399 * Default false. 400 * @param string|false $type Type of resource. 'f' for file, 'd' for directory. 401 * Default false. 402 * @return bool True on success, false on failure. 403 */ 404 public function delete( $file, $recursive = false, $type = false ) { 405 if ( empty( $file ) ) { 406 return false; 407 } 408 409 if ( 'f' === $type || $this->is_file( $file ) ) { 410 return $this->ftp->delete( $file ); 411 } 412 413 if ( ! $recursive ) { 414 return $this->ftp->rmdir( $file ); 415 } 416 417 return $this->ftp->mdel( $file ); 418 } 419 420 /** 421 * Checks if a file or directory exists. 422 * 423 * @since 2.5.0 424 * @since 6.3.0 Returns false for an empty path. 425 * 426 * @param string $path Path to file or directory. 427 * @return bool Whether $path exists or not. 428 */ 429 public function exists( $path ) { 430 /* 431 * Check for empty path. If ftp::nlist() receives an empty path, 432 * it checks the current working directory and may return true. 433 * 434 * See https://core.trac.wordpress.org/ticket/33058. 435 */ 436 if ( '' === $path ) { 437 return false; 438 } 439 440 $list = $this->ftp->nlist( $path ); 441 442 if ( empty( $list ) && $this->is_dir( $path ) ) { 443 return true; // File is an empty directory. 444 } 445 446 return ! empty( $list ); // Empty list = no file, so invert. 447 // Return $this->ftp->is_exists($file); has issues with ABOR+426 responses on the ncFTPd server. 448 } 449 450 /** 451 * Checks if resource is a file. 452 * 453 * @since 2.5.0 454 * 455 * @param string $file File path. 456 * @return bool Whether $file is a file. 457 */ 458 public function is_file( $file ) { 459 if ( $this->is_dir( $file ) ) { 460 return false; 461 } 462 463 if ( $this->exists( $file ) ) { 464 return true; 465 } 466 467 return false; 468 } 469 470 /** 471 * Checks if resource is a directory. 472 * 473 * @since 2.5.0 474 * 475 * @param string $path Directory path. 476 * @return bool Whether $path is a directory. 477 */ 478 public function is_dir( $path ) { 479 $cwd = $this->cwd(); 480 481 if ( $this->chdir( $path ) ) { 482 $this->chdir( $cwd ); 483 return true; 484 } 485 486 return false; 487 } 488 489 /** 490 * Checks if a file is readable. 491 * 492 * @since 2.5.0 493 * 494 * @param string $file Path to file. 495 * @return bool Whether $file is readable. 496 */ 497 public function is_readable( $file ) { 498 return true; 499 } 500 501 /** 502 * Checks if a file or directory is writable. 503 * 504 * @since 2.5.0 505 * 506 * @param string $path Path to file or directory. 507 * @return bool Whether $path is writable. 508 */ 509 public function is_writable( $path ) { 510 return true; 511 } 512 513 /** 514 * Gets the file's last access time. 515 * 516 * @since 2.5.0 517 * 518 * @param string $file Path to file. 519 * @return int|false Unix timestamp representing last access time, false on failure. 520 */ 521 public function atime( $file ) { 522 return false; 523 } 524 525 /** 526 * Gets the file modification time. 527 * 528 * @since 2.5.0 529 * 530 * @param string $file Path to file. 531 * @return int|false Unix timestamp representing modification time, false on failure. 532 */ 533 public function mtime( $file ) { 534 return $this->ftp->mdtm( $file ); 535 } 536 537 /** 538 * Gets the file size (in bytes). 539 * 540 * @since 2.5.0 541 * 542 * @param string $file Path to file. 543 * @return int|false Size of the file in bytes on success, false on failure. 544 */ 545 public function size( $file ) { 546 return $this->ftp->filesize( $file ); 547 } 548 549 /** 550 * Sets the access and modification times of a file. 551 * 552 * Note: If $file doesn't exist, it will be created. 553 * 554 * @since 2.5.0 555 * 556 * @param string $file Path to file. 557 * @param int $time Optional. Modified time to set for file. 558 * Default 0. 559 * @param int $atime Optional. Access time to set for file. 560 * Default 0. 561 * @return bool True on success, false on failure. 562 */ 563 public function touch( $file, $time = 0, $atime = 0 ) { 564 return false; 565 } 566 567 /** 568 * Creates a directory. 569 * 570 * @since 2.5.0 571 * 572 * @param string $path Path for new directory. 573 * @param int|false $chmod Optional. The permissions as octal number (or false to skip chmod). 574 * Default false. 575 * @param string|int|false $chown Optional. A user name or number (or false to skip chown). 576 * Default false. 577 * @param string|int|false $chgrp Optional. A group name or number (or false to skip chgrp). 578 * Default false. 579 * @return bool True on success, false on failure. 580 */ 581 public function mkdir( $path, $chmod = false, $chown = false, $chgrp = false ) { 582 $path = untrailingslashit( $path ); 583 584 if ( empty( $path ) ) { 585 return false; 586 } 587 588 if ( ! $this->ftp->mkdir( $path ) ) { 589 return false; 590 } 591 592 if ( ! $chmod ) { 593 $chmod = FS_CHMOD_DIR; 594 } 595 596 $this->chmod( $path, $chmod ); 597 598 return true; 599 } 600 601 /** 602 * Deletes a directory. 603 * 604 * @since 2.5.0 605 * 606 * @param string $path Path to directory. 607 * @param bool $recursive Optional. Whether to recursively remove files/directories. 608 * Default false. 609 * @return bool True on success, false on failure. 610 */ 611 public function rmdir( $path, $recursive = false ) { 612 return $this->delete( $path, $recursive ); 613 } 614 615 /** 616 * Gets details for files in a directory or a specific file. 617 * 618 * @since 2.5.0 619 * 620 * @param string $path Path to directory or file. 621 * @param bool $include_hidden Optional. Whether to include details of hidden ("." prefixed) files. 622 * Default true. 623 * @param bool $recursive Optional. Whether to recursively include file details in nested directories. 624 * Default false. 625 * @return array|false { 626 * Array of arrays containing file information. False if unable to list directory contents. 627 * 628 * @type array ...$0 { 629 * Array of file information. Note that some elements may not be available on all filesystems. 630 * 631 * @type string $name Name of the file or directory. 632 * @type string $perms *nix representation of permissions. 633 * @type string $permsn Octal representation of permissions. 634 * @type int|string|false $number File number. May be a numeric string. False if not available. 635 * @type string|false $owner Owner name or ID, or false if not available. 636 * @type string|false $group File permissions group, or false if not available. 637 * @type int|string|false $size Size of file in bytes. May be a numeric string. 638 * False if not available. 639 * @type int|string|false $lastmodunix Last modified unix timestamp. May be a numeric string. 640 * False if not available. 641 * @type string|false $lastmod Last modified month (3 letters) and day (without leading 0), or 642 * false if not available. 643 * @type string|false $time Last modified time, or false if not available. 644 * @type string $type Type of resource. 'f' for file, 'd' for directory, 'l' for link. 645 * @type array|false $files If a directory and `$recursive` is true, contains another array of 646 * files. False if unable to list directory contents. 647 * } 648 * } 649 */ 650 public function dirlist( $path = '.', $include_hidden = true, $recursive = false ) { 651 if ( $this->is_file( $path ) ) { 652 $limit_file = basename( $path ); 653 $path = dirname( $path ) . '/'; 654 } else { 655 $limit_file = false; 656 } 657 658 mbstring_binary_safe_encoding(); 659 660 $list = $this->ftp->dirlist( $path ); 661 662 if ( empty( $list ) && ! $this->exists( $path ) ) { 663 664 reset_mbstring_encoding(); 665 666 return false; 667 } 668 669 $path = trailingslashit( $path ); 670 $ret = array(); 671 672 foreach ( $list as $struc ) { 673 674 if ( '.' === $struc['name'] || '..' === $struc['name'] ) { 675 continue; 676 } 677 678 if ( ! $include_hidden && '.' === $struc['name'][0] ) { 679 continue; 680 } 681 682 if ( $limit_file && $struc['name'] !== $limit_file ) { 683 continue; 684 } 685 686 if ( 'd' === $struc['type'] ) { 687 if ( $recursive ) { 688 $struc['files'] = $this->dirlist( $path . $struc['name'], $include_hidden, $recursive ); 689 } else { 690 $struc['files'] = array(); 691 } 692 } 693 694 // Replace symlinks formatted as "source -> target" with just the source name. 695 if ( $struc['islink'] ) { 696 $struc['name'] = preg_replace( '/(\s*->\s*.*)$/', '', $struc['name'] ); 697 } 698 699 // Add the octal representation of the file permissions. 700 $struc['permsn'] = $this->getnumchmodfromh( $struc['perms'] ); 701 702 $ret[ $struc['name'] ] = $struc; 703 } 704 705 reset_mbstring_encoding(); 706 707 return $ret; 708 } 709 710 /** 711 * Destructor. 712 * 713 * @since 2.5.0 714 */ 715 public function __destruct() { 716 $this->ftp->quit(); 717 } 718 }
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