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1 <?php 2 /** 3 * Base WordPress Filesystem 4 * 5 * @package WordPress 6 * @subpackage Filesystem 7 */ 8 9 /** 10 * Base WordPress Filesystem class for which Filesystem implementations extend 11 * 12 * @since 2.5.0 13 */ 14 class WP_Filesystem_Base { 15 /** 16 * Whether to display debug data for the connection. 17 * 18 * @access public 19 * @since 2.5.0 20 * @var bool 21 */ 22 var $verbose = false; 23 24 /** 25 * Cached list of local filepaths to mapped remote filepaths. 26 * 27 * @access private 28 * @since 2.7.0 29 * @var array 30 */ 31 var $cache = array(); 32 33 /** 34 * The Access method of the current connection, Set automatically. 35 * 36 * @access public 37 * @since 2.5.0 38 * @var string 39 */ 40 var $method = ''; 41 42 /** 43 * Constructor (empty). 44 */ 45 function __construct() {} 46 47 /** 48 * Return the path on the remote filesystem of ABSPATH. 49 * 50 * @access public 51 * @since 2.7.0 52 * 53 * @return string The location of the remote path. 54 */ 55 function abspath() { 56 $folder = $this->find_folder(ABSPATH); 57 // Perhaps the FTP folder is rooted at the WordPress install, Check for wp-includes folder in root, Could have some false positives, but rare. 58 if ( ! $folder && $this->is_dir('/wp-includes') ) 59 $folder = '/'; 60 return $folder; 61 } 62 63 /** 64 * Return the path on the remote filesystem of WP_CONTENT_DIR. 65 * 66 * @access public 67 * @since 2.7.0 68 * 69 * @return string The location of the remote path. 70 */ 71 function wp_content_dir() { 72 return $this->find_folder(WP_CONTENT_DIR); 73 } 74 75 /** 76 * Return the path on the remote filesystem of WP_PLUGIN_DIR. 77 * 78 * @access public 79 * @since 2.7.0 80 * 81 * @return string The location of the remote path. 82 */ 83 function wp_plugins_dir() { 84 return $this->find_folder(WP_PLUGIN_DIR); 85 } 86 87 /** 88 * Return the path on the remote filesystem of the Themes Directory. 89 * 90 * @access public 91 * @since 2.7.0 92 * 93 * @param string $theme The Theme stylesheet or template for the directory. 94 * @return string The location of the remote path. 95 */ 96 function wp_themes_dir( $theme = false ) { 97 $theme_root = get_theme_root( $theme ); 98 99 // Account for relative theme roots 100 if ( '/themes' == $theme_root || ! is_dir( $theme_root ) ) 101 $theme_root = WP_CONTENT_DIR . $theme_root; 102 103 return $this->find_folder( $theme_root ); 104 } 105 106 /** 107 * Return the path on the remote filesystem of WP_LANG_DIR. 108 * 109 * @access public 110 * @since 3.2.0 111 * 112 * @return string The location of the remote path. 113 */ 114 function wp_lang_dir() { 115 return $this->find_folder(WP_LANG_DIR); 116 } 117 118 /** 119 * Locate a folder on the remote filesystem. 120 * 121 * @access public 122 * @since 2.5.0 123 * @deprecated 2.7.0 use WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir() instead. 124 * @see WP_Filesystem::abspath() 125 * @see WP_Filesystem::wp_content_dir() 126 * @see WP_Filesystem::wp_plugins_dir() 127 * @see WP_Filesystem::wp_themes_dir() 128 * @see WP_Filesystem::wp_lang_dir() 129 * 130 * @param string $base The folder to start searching from. 131 * @param bool $echo True to display debug information. 132 * Default false. 133 * @return string The location of the remote path. 134 */ 135 function find_base_dir( $base = '.', $echo = false ) { 136 _deprecated_function(__FUNCTION__, '2.7', 'WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir()' ); 137 $this->verbose = $echo; 138 return $this->abspath(); 139 } 140 141 /** 142 * Locate a folder on the remote filesystem. 143 * 144 * @access public 145 * @since 2.5.0 146 * @deprecated 2.7.0 use WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir() methods instead. 147 * @see WP_Filesystem::abspath() 148 * @see WP_Filesystem::wp_content_dir() 149 * @see WP_Filesystem::wp_plugins_dir() 150 * @see WP_Filesystem::wp_themes_dir() 151 * @see WP_Filesystem::wp_lang_dir() 152 * 153 * @param string $base The folder to start searching from. 154 * @param bool $echo True to display debug information. 155 * @return string The location of the remote path. 156 */ 157 function get_base_dir( $base = '.', $echo = false ) { 158 _deprecated_function(__FUNCTION__, '2.7', 'WP_Filesystem::abspath() or WP_Filesystem::wp_*_dir()' ); 159 $this->verbose = $echo; 160 return $this->abspath(); 161 } 162 163 /** 164 * Locate a folder on the remote filesystem. 165 * 166 * Assumes that on Windows systems, Stripping off the Drive 167 * letter is OK Sanitizes \\ to / in windows filepaths. 168 * 169 * @access public 170 * @since 2.7.0 171 * 172 * @param string $folder the folder to locate. 173 * @return string The location of the remote path. 174 */ 175 function find_folder( $folder ) { 176 177 if ( isset( $this->cache[ $folder ] ) ) 178 return $this->cache[ $folder ]; 179 180 if ( stripos($this->method, 'ftp') !== false ) { 181 $constant_overrides = array( 182 'FTP_BASE' => ABSPATH, 183 'FTP_CONTENT_DIR' => WP_CONTENT_DIR, 184 'FTP_PLUGIN_DIR' => WP_PLUGIN_DIR, 185 'FTP_LANG_DIR' => WP_LANG_DIR 186 ); 187 188 // Direct matches ( folder = CONSTANT/ ) 189 foreach ( $constant_overrides as $constant => $dir ) { 190 if ( ! defined( $constant ) ) 191 continue; 192 if ( $folder === $dir ) 193 return trailingslashit( constant( $constant ) ); 194 } 195 196 // Prefix Matches ( folder = CONSTANT/subdir ) 197 foreach ( $constant_overrides as $constant => $dir ) { 198 if ( ! defined( $constant ) ) 199 continue; 200 if ( 0 === stripos( $folder, $dir ) ) { // $folder starts with $dir 201 $potential_folder = preg_replace( '#^' . preg_quote( $dir, '#' ) . '/#i', trailingslashit( constant( $constant ) ), $folder ); 202 $potential_folder = trailingslashit( $potential_folder ); 203 204 if ( $this->is_dir( $potential_folder ) ) { 205 $this->cache[ $folder ] = $potential_folder; 206 return $potential_folder; 207 } 208 } 209 } 210 } elseif ( 'direct' == $this->method ) { 211 $folder = str_replace('\\', '/', $folder); // Windows path sanitisation 212 return trailingslashit($folder); 213 } 214 215 $folder = preg_replace('|^([a-z]{1}):|i', '', $folder); // Strip out windows drive letter if it's there. 216 $folder = str_replace('\\', '/', $folder); // Windows path sanitisation 217 218 if ( isset($this->cache[ $folder ] ) ) 219 return $this->cache[ $folder ]; 220 221 if ( $this->exists($folder) ) { // Folder exists at that absolute path. 222 $folder = trailingslashit($folder); 223 $this->cache[ $folder ] = $folder; 224 return $folder; 225 } 226 if ( $return = $this->search_for_folder($folder) ) 227 $this->cache[ $folder ] = $return; 228 return $return; 229 } 230 231 /** 232 * Locate a folder on the remote filesystem. 233 * 234 * Expects Windows sanitized path. 235 * 236 * @access private 237 * @since 2.7.0 238 * 239 * @param string $folder The folder to locate. 240 * @param string $base The folder to start searching from. 241 * @param bool $loop If the function has recursed, Internal use only. 242 * @return string The location of the remote path. 243 */ 244 function search_for_folder( $folder, $base = '.', $loop = false ) { 245 if ( empty( $base ) || '.' == $base ) 246 $base = trailingslashit($this->cwd()); 247 248 $folder = untrailingslashit($folder); 249 250 if ( $this->verbose ) 251 printf( "\n" . __('Looking for %1$s in %2$s') . "<br/>\n", $folder, $base ); 252 253 $folder_parts = explode('/', $folder); 254 $folder_part_keys = array_keys( $folder_parts ); 255 $last_index = array_pop( $folder_part_keys ); 256 $last_path = $folder_parts[ $last_index ]; 257 258 $files = $this->dirlist( $base ); 259 260 foreach ( $folder_parts as $index => $key ) { 261 if ( $index == $last_index ) 262 continue; // We want this to be caught by the next code block. 263 264 // Working from /home/ to /user/ to /wordpress/ see if that file exists within the current folder, 265 // If it's found, change into it and follow through looking for it. 266 // If it cant find WordPress down that route, it'll continue onto the next folder level, and see if that matches, and so on. 267 // If it reaches the end, and still cant find it, it'll return false for the entire function. 268 if ( isset($files[ $key ]) ){ 269 // Lets try that folder: 270 $newdir = trailingslashit(path_join($base, $key)); 271 if ( $this->verbose ) 272 printf( "\n" . __('Changing to %s') . "<br/>\n", $newdir ); 273 // only search for the remaining path tokens in the directory, not the full path again 274 $newfolder = implode( '/', array_slice( $folder_parts, $index + 1 ) ); 275 if ( $ret = $this->search_for_folder( $newfolder, $newdir, $loop) ) 276 return $ret; 277 } 278 } 279 280 // Only check this as a last resort, to prevent locating the incorrect install. All above procedures will fail quickly if this is the right branch to take. 281 if (isset( $files[ $last_path ] ) ) { 282 if ( $this->verbose ) 283 printf( "\n" . __('Found %s') . "<br/>\n", $base . $last_path ); 284 return trailingslashit($base . $last_path); 285 } 286 287 // Prevent this function from looping again. 288 // No need to proceed if we've just searched in / 289 if ( $loop || '/' == $base ) 290 return false; 291 292 // As an extra last resort, Change back to / if the folder wasn't found. 293 // This comes into effect when the CWD is /home/user/ but WP is at /var/www/.... 294 return $this->search_for_folder( $folder, '/', true ); 295 296 } 297 298 /** 299 * Return the *nix-style file permissions for a file. 300 * 301 * From the PHP documentation page for fileperms(). 302 * 303 * @link http://docs.php.net/fileperms 304 * 305 * @access public 306 * @since 2.5.0 307 * 308 * @param string $file String filename. 309 * @return string The *nix-style representation of permissions. 310 */ 311 function gethchmod( $file ){ 312 $perms = $this->getchmod($file); 313 if (($perms & 0xC000) == 0xC000) // Socket 314 $info = 's'; 315 elseif (($perms & 0xA000) == 0xA000) // Symbolic Link 316 $info = 'l'; 317 elseif (($perms & 0x8000) == 0x8000) // Regular 318 $info = '-'; 319 elseif (($perms & 0x6000) == 0x6000) // Block special 320 $info = 'b'; 321 elseif (($perms & 0x4000) == 0x4000) // Directory 322 $info = 'd'; 323 elseif (($perms & 0x2000) == 0x2000) // Character special 324 $info = 'c'; 325 elseif (($perms & 0x1000) == 0x1000) // FIFO pipe 326 $info = 'p'; 327 else // Unknown 328 $info = 'u'; 329 330 // Owner 331 $info .= (($perms & 0x0100) ? 'r' : '-'); 332 $info .= (($perms & 0x0080) ? 'w' : '-'); 333 $info .= (($perms & 0x0040) ? 334 (($perms & 0x0800) ? 's' : 'x' ) : 335 (($perms & 0x0800) ? 'S' : '-')); 336 337 // Group 338 $info .= (($perms & 0x0020) ? 'r' : '-'); 339 $info .= (($perms & 0x0010) ? 'w' : '-'); 340 $info .= (($perms & 0x0008) ? 341 (($perms & 0x0400) ? 's' : 'x' ) : 342 (($perms & 0x0400) ? 'S' : '-')); 343 344 // World 345 $info .= (($perms & 0x0004) ? 'r' : '-'); 346 $info .= (($perms & 0x0002) ? 'w' : '-'); 347 $info .= (($perms & 0x0001) ? 348 (($perms & 0x0200) ? 't' : 'x' ) : 349 (($perms & 0x0200) ? 'T' : '-')); 350 return $info; 351 } 352 353 /** 354 * Convert *nix-style file permissions to a octal number. 355 * 356 * Converts '-rw-r--r--' to 0644 357 * From "info at rvgate dot nl"'s comment on the PHP documentation for chmod() 358 * 359 * @link http://docs.php.net/manual/en/function.chmod.php#49614 360 * 361 * @access public 362 * @since 2.5.0 363 * 364 * @param string $mode string The *nix-style file permission. 365 * @return int octal representation 366 */ 367 function getnumchmodfromh( $mode ) { 368 $realmode = ''; 369 $legal = array('', 'w', 'r', 'x', '-'); 370 $attarray = preg_split('//', $mode); 371 372 for ($i=0; $i < count($attarray); $i++) 373 if ($key = array_search($attarray[$i], $legal)) 374 $realmode .= $legal[$key]; 375 376 $mode = str_pad($realmode, 10, '-', STR_PAD_LEFT); 377 $trans = array('-'=>'0', 'r'=>'4', 'w'=>'2', 'x'=>'1'); 378 $mode = strtr($mode,$trans); 379 380 $newmode = $mode[0]; 381 $newmode .= $mode[1] + $mode[2] + $mode[3]; 382 $newmode .= $mode[4] + $mode[5] + $mode[6]; 383 $newmode .= $mode[7] + $mode[8] + $mode[9]; 384 return $newmode; 385 } 386 387 /** 388 * Determine if the string provided contains binary characters. 389 * 390 * @access private 391 * @since 2.7.0 392 * 393 * @param string $text String to test against. 394 * @return bool true if string is binary, false otherwise. 395 */ 396 function is_binary( $text ) { 397 return (bool) preg_match( '|[^\x20-\x7E]|', $text ); // chr(32)..chr(127) 398 } 399 400 /** 401 * Change the ownership of a file / folder. 402 * 403 * Default behavior is to do nothing, override this in your subclass, if desired. 404 * 405 * @since 2.5.0 406 * 407 * @param string $file Path to the file. 408 * @param mixed $owner A user name or number. 409 * @param bool $recursive Optional. If set True changes file owner recursivly. Defaults to False. 410 * @return bool Returns true on success or false on failure. 411 */ 412 function chown( $file, $owner, $recursive = false ) { 413 return false; 414 } 415 416 /** 417 * Connect filesystem. 418 * 419 * @since 2.5.0 420 * 421 * @return bool True on success or false on failure (always true for WP_Filesystem_Direct). 422 */ 423 function connect() { 424 return true; 425 } 426 427 /** 428 * Read entire file into a string. 429 * 430 * @since 2.5.0 431 * 432 * @param string $file Name of the file to read. 433 * @return string|bool Returns the read data or false on failure. 434 */ 435 function get_contents( $file ) { 436 return false; 437 } 438 439 /** 440 * Read entire file into an array. 441 * 442 * @since 2.5.0 443 * 444 * @param string $file Path to the file. 445 * @return array|bool the file contents in an array or false on failure. 446 */ 447 function get_contents_array( $file ) { 448 return false; 449 } 450 451 /** 452 * Write a string to a file. 453 * 454 * @since 2.5.0 455 * 456 * @param string $file Remote path to the file where to write the data. 457 * @param string $contents The data to write. 458 * @param int $mode Optional. The file permissions as octal number, usually 0644. 459 * @return bool False on failure. 460 */ 461 function put_contents( $file, $contents, $mode = false ) { 462 return false; 463 } 464 465 /** 466 * Get the current working directory. 467 * 468 * @since 2.5.0 469 * 470 * @return string|bool The current working directory on success, or false on failure. 471 */ 472 function cwd() { 473 return false; 474 } 475 476 /** 477 * Change current directory. 478 * 479 * @since 2.5.0 480 * 481 * @param string $dir The new current directory. 482 * @return bool Returns true on success or false on failure. 483 */ 484 function chdir( $dir ) { 485 return false; 486 } 487 488 /** 489 * Change the file group. 490 * 491 * @since 2.5.0 492 * 493 * @param string $file Path to the file. 494 * @param mixed $group A group name or number. 495 * @param bool $recursive Optional. If set True changes file group recursively. Defaults to False. 496 * @return bool Returns true on success or false on failure. 497 */ 498 function chgrp( $file, $group, $recursive = false ) { 499 return false; 500 } 501 502 /** 503 * Change filesystem permissions. 504 * 505 * @since 2.5.0 506 * 507 * @param string $file Path to the file. 508 * @param int $mode Optional. The permissions as octal number, usually 0644 for files, 0755 for dirs. 509 * @param bool $recursive Optional. If set True changes file group recursively. Defaults to False. 510 * @return bool Returns true on success or false on failure. 511 */ 512 function chmod( $file, $mode = false, $recursive = false ) { 513 return false; 514 } 515 516 /** 517 * Get the file owner. 518 * 519 * @since 2.5.0 520 * 521 * @param string $file Path to the file. 522 * @return string|bool Username of the user or false on error. 523 */ 524 function owner( $file ) { 525 return false; 526 } 527 528 /** 529 * Get the file's group. 530 * 531 * @since 2.5.0 532 * 533 * @param string $file Path to the file. 534 * @return string|bool The group or false on error. 535 */ 536 function group( $file ) { 537 return false; 538 } 539 540 /** 541 * Copy a file. 542 * 543 * @since 2.5.0 544 * 545 * @param string $source Path to the source file. 546 * @param string $destination Path to the destination file. 547 * @param bool $overwrite Optional. Whether to overwrite the destination file if it exists. 548 * Default false. 549 * @param int $mode Optional. The permissions as octal number, usually 0644 for files, 0755 for dirs. 550 * Default false. 551 * @return bool True if file copied successfully, False otherwise. 552 */ 553 function copy( $source, $destination, $overwrite = false, $mode = false ) { 554 return false; 555 } 556 557 /** 558 * Move a file. 559 * 560 * @since 2.5.0 561 * 562 * @param string $source Path to the source file. 563 * @param string $destination Path to the destination file. 564 * @param bool $overwrite Optional. Whether to overwrite the destination file if it exists. 565 * Default false. 566 * @return bool True if file copied successfully, False otherwise. 567 */ 568 function move( $source, $destination, $overwrite = false ) { 569 return false; 570 } 571 572 /** 573 * Delete a file or directory. 574 * 575 * @since 2.5.0 576 * 577 * @param string $file Path to the file. 578 * @param bool $recursive Optional. If set True changes file group recursively. Defaults to False. 579 * Default false. 580 * @param bool $type Type of resource. 'f' for file, 'd' for directory. 581 * Default false. 582 * @return bool True if the file or directory was deleted, false on failure. 583 */ 584 function delete( $file, $recursive = false, $type = false ) { 585 return false; 586 } 587 588 /** 589 * Check if a file or directory exists. 590 * 591 * @since 2.5.0 592 * 593 * @param string $file Path to file/directory. 594 * @return bool Whether $file exists or not. 595 */ 596 function exists( $file ) { 597 return false; 598 } 599 600 /** 601 * Check if resource is a file. 602 * 603 * @since 2.5.0 604 * 605 * @param string $file File path. 606 * @return bool Whether $file is a file. 607 */ 608 function is_file( $file ) { 609 return false; 610 } 611 612 /** 613 * Check if resource is a directory. 614 * 615 * @since 2.5.0 616 * 617 * @param string $path Directory path. 618 * @return bool Whether $path is a directory. 619 */ 620 function is_dir( $path ) { 621 return false; 622 } 623 624 /** 625 * Check if a file is readable. 626 * 627 * @since 2.5.0 628 * 629 * @param string $file Path to file. 630 * @return bool Whether $file is readable. 631 */ 632 function is_readable( $file ) { 633 return false; 634 } 635 636 /** 637 * Check if a file or directory is writable. 638 * 639 * @since 2.5.0 640 * 641 * @param string $path Path to file/directory. 642 * @return bool Whether $file is writable. 643 */ 644 function is_writable( $file ) { 645 return false; 646 } 647 648 /** 649 * Gets the file's last access time. 650 * 651 * @since 2.5.0 652 * 653 * @param string $file Path to file. 654 * @return int Unix timestamp representing last access time. 655 */ 656 function atime( $file ) { 657 return false; 658 } 659 660 /** 661 * Gets the file modification time. 662 * 663 * @since 2.5.0 664 * 665 * @param string $file Path to file. 666 * @return int Unix timestamp representing modification time. 667 */ 668 function mtime( $file ) { 669 return false; 670 } 671 672 /** 673 * Gets the file size (in bytes). 674 * 675 * @since 2.5.0 676 * 677 * @param string $file Path to file. 678 * @return int Size of the file in bytes. 679 */ 680 function size( $file ) { 681 return false; 682 } 683 684 /** 685 * Set the access and modification times of a file. 686 * 687 * Note: If $file doesn't exist, it will be created. 688 * 689 * @since 2.5.0 690 * 691 * @param string $file Path to file. 692 * @param int $time Optional. Modified time to set for file. 693 * Default 0. 694 * @param int $atime Optional. Access time to set for file. 695 * Default 0. 696 * @return bool Whether operation was successful or not. 697 */ 698 function touch( $file, $time = 0, $atime = 0 ) { 699 return false; 700 } 701 702 /** 703 * Create a directory. 704 * 705 * @since 2.5.0 706 * 707 * @param string $path Path for new directory. 708 * @param mixed $chmod Optional. The permissions as octal number, (or False to skip chmod) 709 * Default false. 710 * @param mixed $chown Optional. A user name or number (or False to skip chown) 711 * Default false. 712 * @param mixed $chgrp Optional. A group name or number (or False to skip chgrp). 713 * Default false. 714 * @return bool False if directory cannot be created, true otherwise. 715 */ 716 function mkdir( $path, $chmod = false, $chown = false, $chgrp = false ) { 717 return false; 718 } 719 720 /** 721 * Delete a directory. 722 * 723 * @since 2.5.0 724 * 725 * @param string $path Path to directory. 726 * @param bool $recursive Optional. Whether to recursively remove files/directories. 727 * Default false. 728 * @return bool Whether directory is deleted successfully or not. 729 */ 730 function rmdir( $path, $recursive = false ) { 731 return false; 732 } 733 734 /** 735 * Get details for files in a directory or a specific file. 736 * 737 * @since 2.5.0 738 * 739 * @param string $path Path to directory or file. 740 * @param bool $include_hidden Optional. Whether to include details of hidden ("." prefixed) files. 741 * Default true. 742 * @param bool $recursive Optional. Whether to recursively include file details in nested directories. 743 * Default false. 744 * @return array|bool { 745 * Array of files. False if unable to list directory contents. 746 * 747 * @type string 'name' Name of the file/directory. 748 * @type string 'perms' *nix representation of permissions. 749 * @type int 'permsn' Octal representation of permissions. 750 * @type string 'owner' Owner name or ID. 751 * @type int 'size' Size of file in bytes. 752 * @type int 'lastmodunix' Last modified unix timestamp. 753 * @type mixed 'lastmod' Last modified month (3 letter) and day (without leading 0). 754 * @type int 'time' Last modified time. 755 * @type string 'type' Type of resource. 'f' for file, 'd' for directory. 756 * @type mixed 'files' If a directory and $recursive is true, contains another array of files. 757 * } 758 */ 759 function dirlist( $path, $include_hidden = true, $recursive = false ) { 760 return false; 761 } 762 763 } // WP_Filesystem_Base
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