3 * Functions for reading, writing, modifying, and deleting files on the file system.
4 * Includes functionality for theme-specific files as well as operations for uploading,
5 * archiving, and rendering output when necessary.
8 * @subpackage Administration
11 /** The descriptions for theme files. */
12 $wp_file_descriptions = array(
13 'index.php' => __( 'Main Index Template' ),
14 'style.css' => __( 'Stylesheet' ),
15 'editor-style.css' => __( 'Visual Editor Stylesheet' ),
16 'editor-style-rtl.css' => __( 'Visual Editor RTL Stylesheet' ),
17 'rtl.css' => __( 'RTL Stylesheet' ),
18 'comments.php' => __( 'Comments' ),
19 'comments-popup.php' => __( 'Popup Comments' ),
20 'footer.php' => __( 'Footer' ),
21 'header.php' => __( 'Header' ),
22 'sidebar.php' => __( 'Sidebar' ),
23 'archive.php' => __( 'Archives' ),
24 'author.php' => __( 'Author Template' ),
25 'tag.php' => __( 'Tag Template' ),
26 'category.php' => __( 'Category Template' ),
27 'page.php' => __( 'Page Template' ),
28 'search.php' => __( 'Search Results' ),
29 'searchform.php' => __( 'Search Form' ),
30 'single.php' => __( 'Single Post' ),
31 '404.php' => __( '404 Template' ),
32 'link.php' => __( 'Links Template' ),
33 'functions.php' => __( 'Theme Functions' ),
34 'attachment.php' => __( 'Attachment Template' ),
35 'image.php' => __('Image Attachment Template'),
36 'video.php' => __('Video Attachment Template'),
37 'audio.php' => __('Audio Attachment Template'),
38 'application.php' => __('Application Attachment Template'),
39 'my-hacks.php' => __( 'my-hacks.php (legacy hacks support)' ),
40 '.htaccess' => __( '.htaccess (for rewrite rules )' ),
42 'wp-layout.css' => __( 'Stylesheet' ),
43 'wp-comments.php' => __( 'Comments Template' ),
44 'wp-comments-popup.php' => __( 'Popup Comments Template' ),
48 * Get the description for standard WordPress theme files and other various standard
53 * @uses $wp_file_descriptions
54 * @param string $file Filesystem path or filename
55 * @return string Description of file from $wp_file_descriptions or basename of $file if description doesn't exist
57 function get_file_description( $file ) {
58 global $wp_file_descriptions;
60 if ( isset( $wp_file_descriptions[basename( $file )] ) ) {
61 return $wp_file_descriptions[basename( $file )];
63 elseif ( file_exists( $file ) && is_file( $file ) ) {
64 $template_data = implode( '', file( $file ) );
65 if ( preg_match( '|Template Name:(.*)$|mi', $template_data, $name ))
66 return sprintf( __( '%s Page Template' ), _cleanup_header_comment($name[1]) );
69 return trim( basename( $file ) );
73 * Get the absolute filesystem path to the root of the WordPress installation
77 * @return string Full filesystem path to the root of the WordPress installation
79 function get_home_path() {
80 $home = set_url_scheme( get_option( 'home' ), 'http' );
81 $siteurl = set_url_scheme( get_option( 'siteurl' ), 'http' );
82 if ( ! empty( $home ) && 0 !== strcasecmp( $home, $siteurl ) ) {
83 $wp_path_rel_to_home = str_ireplace( $home, '', $siteurl ); /* $siteurl - $home */
84 $pos = strripos( str_replace( '\\', '/', $_SERVER['SCRIPT_FILENAME'] ), trailingslashit( $wp_path_rel_to_home ) );
85 $home_path = substr( $_SERVER['SCRIPT_FILENAME'], 0, $pos );
86 $home_path = trailingslashit( $home_path );
91 return str_replace( '\\', '/', $home_path );
95 * Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep.
96 * The depth of the recursiveness can be controlled by the $levels param.
100 * @param string $folder Optional. Full path to folder. Default empty.
101 * @param int $levels Optional. Levels of folders to follow, Default 100 (PHP Loop limit).
102 * @return bool|array False on failure, Else array of files
104 function list_files( $folder = '', $levels = 100 ) {
105 if ( empty($folder) )
112 if ( $dir = @opendir( $folder ) ) {
113 while (($file = readdir( $dir ) ) !== false ) {
114 if ( in_array($file, array('.', '..') ) )
116 if ( is_dir( $folder . '/' . $file ) ) {
117 $files2 = list_files( $folder . '/' . $file, $levels - 1);
119 $files = array_merge($files, $files2 );
121 $files[] = $folder . '/' . $file . '/';
123 $files[] = $folder . '/' . $file;
132 * Returns a filename of a Temporary unique file.
133 * Please note that the calling function must unlink() this itself.
135 * The filename is based off the passed parameter or defaults to the current unix timestamp,
136 * while the directory can either be passed as well, or by leaving it blank, default to a writable temporary directory.
140 * @param string $filename Optional. Filename to base the Unique file off. Default empty.
141 * @param string $dir Optional. Directory to store the file in. Default empty.
142 * @return string a writable filename
144 function wp_tempnam($filename = '', $dir = '') {
146 $dir = get_temp_dir();
147 $filename = basename($filename);
148 if ( empty($filename) )
151 $filename = preg_replace('|\..*$|', '.tmp', $filename);
152 $filename = $dir . wp_unique_filename($dir, $filename);
158 * Make sure that the file that was requested to edit, is allowed to be edited
160 * Function will die if if you are not allowed to edit the file
164 * @param string $file file the users is attempting to edit
165 * @param array $allowed_files Array of allowed files to edit, $file must match an entry exactly
166 * @return string|null
168 function validate_file_to_edit( $file, $allowed_files = '' ) {
169 $code = validate_file( $file, $allowed_files );
176 wp_die( __( 'Sorry, that file cannot be edited.' ) );
179 // wp_die( __('Sorry, can’t call files with their real path.' ));
182 wp_die( __( 'Sorry, that file cannot be edited.' ) );
187 * Handle PHP uploads in WordPress, sanitizing file names, checking extensions for mime type,
188 * and moving the file to the appropriate directory within the uploads directory.
192 * @see wp_handle_upload_error
194 * @param array $file Reference to a single element of $_FILES. Call the function once for
195 * each uploaded file.
196 * @param array $overrides An associative array of names => values to override default variables.
197 * @param string $time Time formatted in 'yyyy/mm'.
198 * @param string $action Expected value for $_POST['action'].
199 * @return array On success, returns an associative array of file attributes. On failure, returns
200 * $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
202 function _wp_handle_upload( &$file, $overrides, $time, $action ) {
203 // The default error handler.
204 if ( ! function_exists( 'wp_handle_upload_error' ) ) {
205 function wp_handle_upload_error( &$file, $message ) {
206 return array( 'error' => $message );
211 * Filter the data for a file before it is uploaded to WordPress.
213 * The dynamic portion of the hook name, `$action`, refers to the post action.
215 * @since 2.9.0 as 'wp_handle_upload_prefilter'.
216 * @since 4.0.0 Converted to a dynamic hook with `$action`.
218 * @param array $file An array of data for a single file.
220 $file = apply_filters( "{$action}_prefilter", $file );
222 // You may define your own function and pass the name in $overrides['upload_error_handler']
223 $upload_error_handler = 'wp_handle_upload_error';
224 if ( isset( $overrides['upload_error_handler'] ) ) {
225 $upload_error_handler = $overrides['upload_error_handler'];
228 // You may have had one or more 'wp_handle_upload_prefilter' functions error out the file. Handle that gracefully.
229 if ( isset( $file['error'] ) && ! is_numeric( $file['error'] ) && $file['error'] ) {
230 return $upload_error_handler( $file, $file['error'] );
233 // Install user overrides. Did we mention that this voids your warranty?
235 // You may define your own function and pass the name in $overrides['unique_filename_callback']
236 $unique_filename_callback = null;
237 if ( isset( $overrides['unique_filename_callback'] ) ) {
238 $unique_filename_callback = $overrides['unique_filename_callback'];
242 * This may not have orignially been intended to be overrideable,
243 * but historically has been.
245 if ( isset( $overrides['upload_error_strings'] ) ) {
246 $upload_error_strings = $overrides['upload_error_strings'];
248 // Courtesy of php.net, the strings that describe the error indicated in $_FILES[{form field}]['error'].
249 $upload_error_strings = array(
251 __( 'The uploaded file exceeds the upload_max_filesize directive in php.ini.' ),
252 __( 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.' ),
253 __( 'The uploaded file was only partially uploaded.' ),
254 __( 'No file was uploaded.' ),
256 __( 'Missing a temporary folder.' ),
257 __( 'Failed to write file to disk.' ),
258 __( 'File upload stopped by extension.' )
262 // All tests are on by default. Most can be turned off by $overrides[{test_name}] = false;
263 $test_form = isset( $overrides['test_form'] ) ? $overrides['test_form'] : true;
264 $test_size = isset( $overrides['test_size'] ) ? $overrides['test_size'] : true;
266 // If you override this, you must provide $ext and $type!!
267 $test_type = isset( $overrides['test_type'] ) ? $overrides['test_type'] : true;
268 $mimes = isset( $overrides['mimes'] ) ? $overrides['mimes'] : false;
270 // A correct form post will pass this test.
271 if ( $test_form && ( ! isset( $_POST['action'] ) || ( $_POST['action'] != $action ) ) ) {
272 return call_user_func( $upload_error_handler, $file, __( 'Invalid form submission.' ) );
274 // A successful upload will pass this test. It makes no sense to override this one.
275 if ( isset( $file['error'] ) && $file['error'] > 0 ) {
276 return call_user_func( $upload_error_handler, $file, $upload_error_strings[ $file['error'] ] );
279 $test_file_size = 'wp_handle_upload' === $action ? $file['size'] : filesize( $file['tmp_name'] );
280 // A non-empty file will pass this test.
281 if ( $test_size && ! ( $test_file_size > 0 ) ) {
282 if ( is_multisite() ) {
283 $error_msg = __( 'File is empty. Please upload something more substantial.' );
285 $error_msg = __( 'File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.' );
287 return call_user_func( $upload_error_handler, $file, $error_msg );
290 // A properly uploaded file will pass this test. There should be no reason to override this one.
291 $test_uploaded_file = 'wp_handle_upload' === $action ? @ is_uploaded_file( $file['tmp_name'] ) : @ is_file( $file['tmp_name'] );
292 if ( ! $test_uploaded_file ) {
293 return call_user_func( $upload_error_handler, $file, __( 'Specified file failed upload test.' ) );
296 // A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter.
298 $wp_filetype = wp_check_filetype_and_ext( $file['tmp_name'], $file['name'], $mimes );
299 $ext = empty( $wp_filetype['ext'] ) ? '' : $wp_filetype['ext'];
300 $type = empty( $wp_filetype['type'] ) ? '' : $wp_filetype['type'];
301 $proper_filename = empty( $wp_filetype['proper_filename'] ) ? '' : $wp_filetype['proper_filename'];
303 // Check to see if wp_check_filetype_and_ext() determined the filename was incorrect
304 if ( $proper_filename ) {
305 $file['name'] = $proper_filename;
307 if ( ( ! $type || !$ext ) && ! current_user_can( 'unfiltered_upload' ) ) {
308 return call_user_func( $upload_error_handler, $file, __( 'Sorry, this file type is not permitted for security reasons.' ) );
311 $type = $file['type'];
318 * A writable uploads dir will pass this test. Again, there's no point
319 * overriding this one.
321 if ( ! ( ( $uploads = wp_upload_dir( $time ) ) && false === $uploads['error'] ) ) {
322 return call_user_func( $upload_error_handler, $file, $uploads['error'] );
325 $filename = wp_unique_filename( $uploads['path'], $file['name'], $unique_filename_callback );
327 // Move the file to the uploads dir.
328 $new_file = $uploads['path'] . "/$filename";
329 if ( 'wp_handle_upload' === $action ) {
330 $move_new_file = @ move_uploaded_file( $file['tmp_name'], $new_file );
332 $move_new_file = @ rename( $file['tmp_name'], $new_file );
335 if ( false === $move_new_file ) {
336 if ( 0 === strpos( $uploads['basedir'], ABSPATH ) ) {
337 $error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir'];
339 $error_path = basename( $uploads['basedir'] ) . $uploads['subdir'];
341 return $upload_error_handler( $file, sprintf( __('The uploaded file could not be moved to %s.' ), $error_path ) );
344 // Set correct file permissions.
345 $stat = stat( dirname( $new_file ));
346 $perms = $stat['mode'] & 0000666;
347 @ chmod( $new_file, $perms );
350 $url = $uploads['url'] . "/$filename";
352 if ( is_multisite() ) {
353 delete_transient( 'dirsize_cache' );
357 * Filter the data array for the uploaded file.
361 * @param array $upload {
362 * Array of upload data.
364 * @type string $file Filename of the newly-uploaded file.
365 * @type string $url URL of the uploaded file.
366 * @type string $type File type.
368 * @param string $context The type of upload action. Values include 'upload' or 'sideload'.
370 return apply_filters( 'wp_handle_upload', array(
374 ), 'wp_handle_sideload' === $action ? 'sideload' : 'upload' ); }
377 * Wrapper for _wp_handle_upload(), passes 'wp_handle_upload' action.
381 * @see _wp_handle_upload()
383 * @param array $file Reference to a single element of $_FILES. Call the function once for
384 * each uploaded file.
385 * @param array|bool $overrides Optional. An associative array of names=>values to override default
386 * variables. Default false.
387 * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.
388 * @return array On success, returns an associative array of file attributes. On failure, returns
389 * $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
391 function wp_handle_upload( &$file, $overrides = false, $time = null ) {
393 * $_POST['action'] must be set and its value must equal $overrides['action']
396 $action = 'wp_handle_upload';
397 if ( isset( $overrides['action'] ) ) {
398 $action = $overrides['action'];
401 return _wp_handle_upload( $file, $overrides, $time, $action );
405 * Wrapper for _wp_handle_upload(), passes 'wp_handle_sideload' action
409 * @see _wp_handle_upload()
411 * @param array $file An array similar to that of a PHP $_FILES POST array
412 * @param array|bool $overrides Optional. An associative array of names=>values to override default
413 * variables. Default false.
414 * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.
415 * @return array On success, returns an associative array of file attributes. On failure, returns
416 * $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
418 function wp_handle_sideload( &$file, $overrides = false, $time = null ) {
420 * $_POST['action'] must be set and its value must equal $overrides['action']
423 $action = 'wp_handle_sideload';
424 if ( isset( $overrides['action'] ) ) {
425 $action = $overrides['action'];
427 return _wp_handle_upload( $file, $overrides, $time, $action );
432 * Downloads a url to a local temporary file using the WordPress HTTP Class.
433 * Please note, That the calling function must unlink() the file.
437 * @param string $url the URL of the file to download
438 * @param int $timeout The timeout for the request to download the file default 300 seconds
439 * @return mixed WP_Error on failure, string Filename on success.
441 function download_url( $url, $timeout = 300 ) {
442 //WARNING: The file is not automatically deleted, The script must unlink() the file.
444 return new WP_Error('http_no_url', __('Invalid URL Provided.'));
446 $tmpfname = wp_tempnam($url);
448 return new WP_Error('http_no_file', __('Could not create Temporary file.'));
450 $response = wp_safe_remote_get( $url, array( 'timeout' => $timeout, 'stream' => true, 'filename' => $tmpfname ) );
452 if ( is_wp_error( $response ) ) {
457 if ( 200 != wp_remote_retrieve_response_code( $response ) ){
459 return new WP_Error( 'http_404', trim( wp_remote_retrieve_response_message( $response ) ) );
462 $content_md5 = wp_remote_retrieve_header( $response, 'content-md5' );
463 if ( $content_md5 ) {
464 $md5_check = verify_file_md5( $tmpfname, $content_md5 );
465 if ( is_wp_error( $md5_check ) ) {
475 * Calculates and compares the MD5 of a file to its expected value.
479 * @param string $filename The filename to check the MD5 of.
480 * @param string $expected_md5 The expected MD5 of the file, either a base64 encoded raw md5, or a hex-encoded md5
481 * @return bool|object WP_Error on failure, true on success, false when the MD5 format is unknown/unexpected
483 function verify_file_md5( $filename, $expected_md5 ) {
484 if ( 32 == strlen( $expected_md5 ) )
485 $expected_raw_md5 = pack( 'H*', $expected_md5 );
486 elseif ( 24 == strlen( $expected_md5 ) )
487 $expected_raw_md5 = base64_decode( $expected_md5 );
489 return false; // unknown format
491 $file_md5 = md5_file( $filename, true );
493 if ( $file_md5 === $expected_raw_md5 )
496 return new WP_Error( 'md5_mismatch', sprintf( __( 'The checksum of the file (%1$s) does not match the expected checksum value (%2$s).' ), bin2hex( $file_md5 ), bin2hex( $expected_raw_md5 ) ) );
500 * Unzips a specified ZIP file to a location on the Filesystem via the WordPress Filesystem Abstraction.
501 * Assumes that WP_Filesystem() has already been called and set up. Does not extract a root-level __MACOSX directory, if present.
503 * Attempts to increase the PHP Memory limit to 256M before uncompressing,
504 * However, The most memory required shouldn't be much larger than the Archive itself.
508 * @param string $file Full path and filename of zip archive
509 * @param string $to Full path on the filesystem to extract archive to
510 * @return mixed WP_Error on failure, True on success
512 function unzip_file($file, $to) {
513 global $wp_filesystem;
515 if ( ! $wp_filesystem || !is_object($wp_filesystem) )
516 return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
518 // Unzip can use a lot of memory, but not this much hopefully
519 /** This filter is documented in wp-admin/admin.php */
520 @ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', WP_MAX_MEMORY_LIMIT ) );
522 $needed_dirs = array();
523 $to = trailingslashit($to);
525 // Determine any parent dir's needed (of the upgrade directory)
526 if ( ! $wp_filesystem->is_dir($to) ) { //Only do parents if no children exist
527 $path = preg_split('![/\\\]!', untrailingslashit($to));
528 for ( $i = count($path); $i >= 0; $i-- ) {
529 if ( empty($path[$i]) )
532 $dir = implode('/', array_slice($path, 0, $i+1) );
533 if ( preg_match('!^[a-z]:$!i', $dir) ) // Skip it if it looks like a Windows Drive letter.
536 if ( ! $wp_filesystem->is_dir($dir) )
537 $needed_dirs[] = $dir;
539 break; // A folder exists, therefor, we dont need the check the levels below this
544 * Filter whether to use ZipArchive to unzip archives.
548 * @param bool $ziparchive Whether to use ZipArchive. Default true.
550 if ( class_exists( 'ZipArchive' ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) {
551 $result = _unzip_file_ziparchive($file, $to, $needed_dirs);
552 if ( true === $result ) {
554 } elseif ( is_wp_error($result) ) {
555 if ( 'incompatible_archive' != $result->get_error_code() )
559 // Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file.
560 return _unzip_file_pclzip($file, $to, $needed_dirs);
564 * This function should not be called directly, use unzip_file instead. Attempts to unzip an archive using the ZipArchive class.
565 * Assumes that WP_Filesystem() has already been called and set up.
571 * @param string $file Full path and filename of zip archive
572 * @param string $to Full path on the filesystem to extract archive to
573 * @param array $needed_dirs A partial list of required folders needed to be created.
574 * @return mixed WP_Error on failure, True on success
576 function _unzip_file_ziparchive($file, $to, $needed_dirs = array() ) {
577 global $wp_filesystem;
579 $z = new ZipArchive();
581 $zopen = $z->open( $file, ZIPARCHIVE::CHECKCONS );
582 if ( true !== $zopen )
583 return new WP_Error( 'incompatible_archive', __( 'Incompatible Archive.' ), array( 'ziparchive_error' => $zopen ) );
585 $uncompressed_size = 0;
587 for ( $i = 0; $i < $z->numFiles; $i++ ) {
588 if ( ! $info = $z->statIndex($i) )
589 return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) );
591 if ( '__MACOSX/' === substr($info['name'], 0, 9) ) // Skip the OS X-created __MACOSX directory
594 $uncompressed_size += $info['size'];
596 if ( '/' == substr($info['name'], -1) ) // directory
597 $needed_dirs[] = $to . untrailingslashit($info['name']);
599 $needed_dirs[] = $to . untrailingslashit(dirname($info['name']));
603 * disk_free_space() could return false. Assume that any falsey value is an error.
604 * A disk that has zero free bytes has bigger problems.
605 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer.
607 if ( defined( 'DOING_CRON' ) && DOING_CRON ) {
608 $available_space = @disk_free_space( WP_CONTENT_DIR );
609 if ( $available_space && ( $uncompressed_size * 2.1 ) > $available_space )
610 return new WP_Error( 'disk_full_unzip_file', __( 'Could not copy files. You may have run out of disk space.' ), compact( 'uncompressed_size', 'available_space' ) );
613 $needed_dirs = array_unique($needed_dirs);
614 foreach ( $needed_dirs as $dir ) {
615 // Check the parent folders of the folders all exist within the creation array.
616 if ( untrailingslashit($to) == $dir ) // Skip over the working directory, We know this exists (or will exist)
618 if ( strpos($dir, $to) === false ) // If the directory is not within the working directory, Skip it
621 $parent_folder = dirname($dir);
622 while ( !empty($parent_folder) && untrailingslashit($to) != $parent_folder && !in_array($parent_folder, $needed_dirs) ) {
623 $needed_dirs[] = $parent_folder;
624 $parent_folder = dirname($parent_folder);
629 // Create those directories if need be:
630 foreach ( $needed_dirs as $_dir ) {
631 if ( ! $wp_filesystem->mkdir($_dir, FS_CHMOD_DIR) && ! $wp_filesystem->is_dir($_dir) ) // Only check to see if the Dir exists upon creation failure. Less I/O this way.
632 return new WP_Error( 'mkdir_failed_ziparchive', __( 'Could not create directory.' ), substr( $_dir, strlen( $to ) ) );
636 for ( $i = 0; $i < $z->numFiles; $i++ ) {
637 if ( ! $info = $z->statIndex($i) )
638 return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) );
640 if ( '/' == substr($info['name'], -1) ) // directory
643 if ( '__MACOSX/' === substr($info['name'], 0, 9) ) // Don't extract the OS X-created __MACOSX directory files
646 $contents = $z->getFromIndex($i);
647 if ( false === $contents )
648 return new WP_Error( 'extract_failed_ziparchive', __( 'Could not extract file from archive.' ), $info['name'] );
650 if ( ! $wp_filesystem->put_contents( $to . $info['name'], $contents, FS_CHMOD_FILE) )
651 return new WP_Error( 'copy_failed_ziparchive', __( 'Could not copy file.' ), $info['name'] );
660 * This function should not be called directly, use unzip_file instead. Attempts to unzip an archive using the PclZip library.
661 * Assumes that WP_Filesystem() has already been called and set up.
667 * @param string $file Full path and filename of zip archive
668 * @param string $to Full path on the filesystem to extract archive to
669 * @param array $needed_dirs A partial list of required folders needed to be created.
670 * @return mixed WP_Error on failure, True on success
672 function _unzip_file_pclzip($file, $to, $needed_dirs = array()) {
673 global $wp_filesystem;
675 mbstring_binary_safe_encoding();
677 require_once(ABSPATH . 'wp-admin/includes/class-pclzip.php');
679 $archive = new PclZip($file);
681 $archive_files = $archive->extract(PCLZIP_OPT_EXTRACT_AS_STRING);
683 reset_mbstring_encoding();
685 // Is the archive valid?
686 if ( !is_array($archive_files) )
687 return new WP_Error('incompatible_archive', __('Incompatible Archive.'), $archive->errorInfo(true));
689 if ( 0 == count($archive_files) )
690 return new WP_Error( 'empty_archive_pclzip', __( 'Empty archive.' ) );
692 $uncompressed_size = 0;
694 // Determine any children directories needed (From within the archive)
695 foreach ( $archive_files as $file ) {
696 if ( '__MACOSX/' === substr($file['filename'], 0, 9) ) // Skip the OS X-created __MACOSX directory
699 $uncompressed_size += $file['size'];
701 $needed_dirs[] = $to . untrailingslashit( $file['folder'] ? $file['filename'] : dirname($file['filename']) );
705 * disk_free_space() could return false. Assume that any falsey value is an error.
706 * A disk that has zero free bytes has bigger problems.
707 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer.
709 if ( defined( 'DOING_CRON' ) && DOING_CRON ) {
710 $available_space = @disk_free_space( WP_CONTENT_DIR );
711 if ( $available_space && ( $uncompressed_size * 2.1 ) > $available_space )
712 return new WP_Error( 'disk_full_unzip_file', __( 'Could not copy files. You may have run out of disk space.' ), compact( 'uncompressed_size', 'available_space' ) );
715 $needed_dirs = array_unique($needed_dirs);
716 foreach ( $needed_dirs as $dir ) {
717 // Check the parent folders of the folders all exist within the creation array.
718 if ( untrailingslashit($to) == $dir ) // Skip over the working directory, We know this exists (or will exist)
720 if ( strpos($dir, $to) === false ) // If the directory is not within the working directory, Skip it
723 $parent_folder = dirname($dir);
724 while ( !empty($parent_folder) && untrailingslashit($to) != $parent_folder && !in_array($parent_folder, $needed_dirs) ) {
725 $needed_dirs[] = $parent_folder;
726 $parent_folder = dirname($parent_folder);
731 // Create those directories if need be:
732 foreach ( $needed_dirs as $_dir ) {
733 // Only check to see if the dir exists upon creation failure. Less I/O this way.
734 if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) )
735 return new WP_Error( 'mkdir_failed_pclzip', __( 'Could not create directory.' ), substr( $_dir, strlen( $to ) ) );
739 // Extract the files from the zip
740 foreach ( $archive_files as $file ) {
741 if ( $file['folder'] )
744 if ( '__MACOSX/' === substr($file['filename'], 0, 9) ) // Don't extract the OS X-created __MACOSX directory files
747 if ( ! $wp_filesystem->put_contents( $to . $file['filename'], $file['content'], FS_CHMOD_FILE) )
748 return new WP_Error( 'copy_failed_pclzip', __( 'Could not copy file.' ), $file['filename'] );
754 * Copies a directory from one location to another via the WordPress Filesystem Abstraction.
755 * Assumes that WP_Filesystem() has already been called and setup.
759 * @param string $from source directory
760 * @param string $to destination directory
761 * @param array $skip_list a list of files/folders to skip copying
762 * @return mixed WP_Error on failure, True on success.
764 function copy_dir($from, $to, $skip_list = array() ) {
765 global $wp_filesystem;
767 $dirlist = $wp_filesystem->dirlist($from);
769 $from = trailingslashit($from);
770 $to = trailingslashit($to);
772 foreach ( (array) $dirlist as $filename => $fileinfo ) {
773 if ( in_array( $filename, $skip_list ) )
776 if ( 'f' == $fileinfo['type'] ) {
777 if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE) ) {
778 // If copy failed, chmod file to 0644 and try again.
779 $wp_filesystem->chmod( $to . $filename, FS_CHMOD_FILE );
780 if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE) )
781 return new WP_Error( 'copy_failed_copy_dir', __( 'Could not copy file.' ), $to . $filename );
783 } elseif ( 'd' == $fileinfo['type'] ) {
784 if ( !$wp_filesystem->is_dir($to . $filename) ) {
785 if ( !$wp_filesystem->mkdir($to . $filename, FS_CHMOD_DIR) )
786 return new WP_Error( 'mkdir_failed_copy_dir', __( 'Could not create directory.' ), $to . $filename );
789 // generate the $sub_skip_list for the subdirectory as a sub-set of the existing $skip_list
790 $sub_skip_list = array();
791 foreach ( $skip_list as $skip_item ) {
792 if ( 0 === strpos( $skip_item, $filename . '/' ) )
793 $sub_skip_list[] = preg_replace( '!^' . preg_quote( $filename, '!' ) . '/!i', '', $skip_item );
796 $result = copy_dir($from . $filename, $to . $filename, $sub_skip_list);
797 if ( is_wp_error($result) )
805 * Initialises and connects the WordPress Filesystem Abstraction classes.
806 * This function will include the chosen transport and attempt connecting.
808 * Plugins may add extra transports, And force WordPress to use them by returning
809 * the filename via the {@see 'filesystem_method_file'} filter.
813 * @param array $args Optional. Connection args, These are passed directly to
814 * the `WP_Filesystem_*()` classes. Default false.
815 * @param string $context Optional. Context for {@see get_filesystem_method()}.
817 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable.
819 * @return null|boolean false on failure, true on success.
821 function WP_Filesystem( $args = false, $context = false, $allow_relaxed_file_ownership = false ) {
822 global $wp_filesystem;
824 require_once(ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php');
826 $method = get_filesystem_method( $args, $context, $allow_relaxed_file_ownership );
831 if ( ! class_exists("WP_Filesystem_$method") ) {
834 * Filter the path for a specific filesystem method class file.
838 * @see get_filesystem_method()
840 * @param string $path Path to the specific filesystem method class file.
841 * @param string $method The filesystem method to use.
843 $abstraction_file = apply_filters( 'filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method );
845 if ( ! file_exists($abstraction_file) )
848 require_once($abstraction_file);
850 $method = "WP_Filesystem_$method";
852 $wp_filesystem = new $method($args);
854 //Define the timeouts for the connections. Only available after the construct is called to allow for per-transport overriding of the default.
855 if ( ! defined('FS_CONNECT_TIMEOUT') )
856 define('FS_CONNECT_TIMEOUT', 30);
857 if ( ! defined('FS_TIMEOUT') )
858 define('FS_TIMEOUT', 30);
860 if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
863 if ( !$wp_filesystem->connect() )
864 return false; //There was an error connecting to the server.
866 // Set the permission constants if not already set.
867 if ( ! defined('FS_CHMOD_DIR') )
868 define('FS_CHMOD_DIR', ( fileperms( ABSPATH ) & 0777 | 0755 ) );
869 if ( ! defined('FS_CHMOD_FILE') )
870 define('FS_CHMOD_FILE', ( fileperms( ABSPATH . 'index.php' ) & 0777 | 0644 ) );
876 * Determines which Filesystem Method to use.
878 * The priority of the Transports are: Direct, SSH2, FTP PHP Extension,
879 * FTP Sockets (Via Sockets class, or `fsockopen()`).
881 * Note that the return value of this function can be overridden in 2 ways
883 * - By defining FS_METHOD in your `wp-config.php` file
884 * - By using the filesystem_method filter
886 * Valid values for these are: 'direct', 'ssh2', 'ftpext' or 'ftpsockets'.
888 * Plugins may also define a custom transport handler, See the WP_Filesystem
889 * function for more information.
893 * @todo Properly mark arguments as optional.
895 * @param array $args Connection details.
896 * @param string $context Full path to the directory that is tested for being writable.
897 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable.
898 * @return string The transport to use, see description for valid return values.
900 function get_filesystem_method( $args = array(), $context = false, $allow_relaxed_file_ownership = false ) {
901 $method = defined('FS_METHOD') ? FS_METHOD : false; // Please ensure that this is either 'direct', 'ssh2', 'ftpext' or 'ftpsockets'
904 $context = WP_CONTENT_DIR;
907 // If the directory doesn't exist (wp-content/languages) then use the parent directory as we'll create it.
908 if ( WP_LANG_DIR == $context && ! is_dir( $context ) ) {
909 $context = dirname( $context );
912 $context = trailingslashit( $context );
916 $temp_file_name = $context . 'temp-write-test-' . time();
917 $temp_handle = @fopen($temp_file_name, 'w');
918 if ( $temp_handle ) {
920 // Attempt to determine the file owner of the WordPress files, and that of newly created files
921 $wp_file_owner = $temp_file_owner = false;
922 if ( function_exists('fileowner') ) {
923 $wp_file_owner = @fileowner( __FILE__ );
924 $temp_file_owner = @fileowner( $temp_file_name );
927 if ( $wp_file_owner !== false && $wp_file_owner === $temp_file_owner ) {
928 // WordPress is creating files as the same owner as the WordPress files,
929 // this means it's safe to modify & create new files via PHP.
931 $GLOBALS['_wp_filesystem_direct_method'] = 'file_owner';
932 } else if ( $allow_relaxed_file_ownership ) {
933 // The $context directory is writable, and $allow_relaxed_file_ownership is set, this means we can modify files
934 // safely in this directory. This mode doesn't create new files, only alter existing ones.
936 $GLOBALS['_wp_filesystem_direct_method'] = 'relaxed_ownership';
939 @fclose($temp_handle);
940 @unlink($temp_file_name);
944 if ( ! $method && isset($args['connection_type']) && 'ssh' == $args['connection_type'] && extension_loaded('ssh2') && function_exists('stream_get_contents') ) $method = 'ssh2';
945 if ( ! $method && extension_loaded('ftp') ) $method = 'ftpext';
946 if ( ! $method && ( extension_loaded('sockets') || function_exists('fsockopen') ) ) $method = 'ftpsockets'; //Sockets: Socket extension; PHP Mode: FSockopen / fwrite / fread
949 * Filter the filesystem method to use.
953 * @param string $method Filesystem method to return.
954 * @param array $args An array of connection details for the method.
955 * @param string $context Full path to the directory that is tested for being writable.
956 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable.
958 return apply_filters( 'filesystem_method', $method, $args, $context, $allow_relaxed_file_ownership );
962 * Displays a form to the user to request for their FTP/SSH details in order
963 * to connect to the filesystem.
965 * All chosen/entered details are saved, Excluding the Password.
967 * Hostnames may be in the form of hostname:portnumber (eg: wordpress.org:2467)
968 * to specify an alternate FTP/SSH port.
970 * Plugins may override this form by returning true|false via the
971 * {@see 'request_filesystem_credentials'} filter.
975 * @todo Properly mark optional arguments as such
977 * @param string $form_post the URL to post the form to
978 * @param string $type the chosen Filesystem method in use
979 * @param boolean $error if the current request has failed to connect
980 * @param string $context The directory which is needed access to, The write-test will be performed on this directory by get_filesystem_method()
981 * @param string $extra_fields Extra POST fields which should be checked for to be included in the post.
982 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable.
983 * @return boolean False on failure. True on success.
985 function request_filesystem_credentials($form_post, $type = '', $error = false, $context = false, $extra_fields = null, $allow_relaxed_file_ownership = false ) {
988 * Filter the filesystem credentials form output.
990 * Returning anything other than an empty string will effectively short-circuit
991 * output of the filesystem credentials form, returning that value instead.
995 * @param mixed $output Form output to return instead. Default empty.
996 * @param string $form_post URL to POST the form to.
997 * @param string $type Chosen type of filesystem.
998 * @param bool $error Whether the current request has failed to connect.
1000 * @param string $context Full path to the directory that is tested for
1002 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable.
1003 * @param array $extra_fields Extra POST fields.
1005 $req_cred = apply_filters( 'request_filesystem_credentials', '', $form_post, $type, $error, $context, $extra_fields, $allow_relaxed_file_ownership );
1006 if ( '' !== $req_cred )
1009 if ( empty($type) ) {
1010 $type = get_filesystem_method( array(), $context, $allow_relaxed_file_ownership );
1013 if ( 'direct' == $type )
1016 if ( is_null( $extra_fields ) )
1017 $extra_fields = array( 'version', 'locale' );
1019 $credentials = get_option('ftp_credentials', array( 'hostname' => '', 'username' => ''));
1021 // If defined, set it to that, Else, If POST'd, set it to that, If not, Set it to whatever it previously was(saved details in option)
1022 $credentials['hostname'] = defined('FTP_HOST') ? FTP_HOST : (!empty($_POST['hostname']) ? wp_unslash( $_POST['hostname'] ) : $credentials['hostname']);
1023 $credentials['username'] = defined('FTP_USER') ? FTP_USER : (!empty($_POST['username']) ? wp_unslash( $_POST['username'] ) : $credentials['username']);
1024 $credentials['password'] = defined('FTP_PASS') ? FTP_PASS : (!empty($_POST['password']) ? wp_unslash( $_POST['password'] ) : '');
1026 // Check to see if we are setting the public/private keys for ssh
1027 $credentials['public_key'] = defined('FTP_PUBKEY') ? FTP_PUBKEY : (!empty($_POST['public_key']) ? wp_unslash( $_POST['public_key'] ) : '');
1028 $credentials['private_key'] = defined('FTP_PRIKEY') ? FTP_PRIKEY : (!empty($_POST['private_key']) ? wp_unslash( $_POST['private_key'] ) : '');
1030 // Sanitize the hostname, Some people might pass in odd-data:
1031 $credentials['hostname'] = preg_replace('|\w+://|', '', $credentials['hostname']); //Strip any schemes off
1033 if ( strpos($credentials['hostname'], ':') ) {
1034 list( $credentials['hostname'], $credentials['port'] ) = explode(':', $credentials['hostname'], 2);
1035 if ( ! is_numeric($credentials['port']) )
1036 unset($credentials['port']);
1038 unset($credentials['port']);
1041 if ( ( defined('FTP_SSH') && FTP_SSH ) || ( defined('FS_METHOD') && 'ssh2' == FS_METHOD ) )
1042 $credentials['connection_type'] = 'ssh';
1043 else if ( (defined('FTP_SSL') && FTP_SSL) && 'ftpext' == $type ) //Only the FTP Extension understands SSL
1044 $credentials['connection_type'] = 'ftps';
1045 else if ( !empty($_POST['connection_type']) )
1046 $credentials['connection_type'] = wp_unslash( $_POST['connection_type'] );
1047 else if ( !isset($credentials['connection_type']) ) //All else fails (And it's not defaulted to something else saved), Default to FTP
1048 $credentials['connection_type'] = 'ftp';
1052 ( !empty($credentials['password']) && !empty($credentials['username']) && !empty($credentials['hostname']) ) ||
1053 ( 'ssh' == $credentials['connection_type'] && !empty($credentials['public_key']) && !empty($credentials['private_key']) )
1055 $stored_credentials = $credentials;
1056 if ( !empty($stored_credentials['port']) ) //save port as part of hostname to simplify above code.
1057 $stored_credentials['hostname'] .= ':' . $stored_credentials['port'];
1059 unset($stored_credentials['password'], $stored_credentials['port'], $stored_credentials['private_key'], $stored_credentials['public_key']);
1060 if ( ! defined( 'WP_INSTALLING' ) ) {
1061 update_option( 'ftp_credentials', $stored_credentials );
1063 return $credentials;
1065 $hostname = isset( $credentials['hostname'] ) ? $credentials['hostname'] : '';
1066 $username = isset( $credentials['username'] ) ? $credentials['username'] : '';
1067 $public_key = isset( $credentials['public_key'] ) ? $credentials['public_key'] : '';
1068 $private_key = isset( $credentials['private_key'] ) ? $credentials['private_key'] : '';
1069 $port = isset( $credentials['port'] ) ? $credentials['port'] : '';
1070 $connection_type = isset( $credentials['connection_type'] ) ? $credentials['connection_type'] : '';
1073 $error_string = __('<strong>ERROR:</strong> There was an error connecting to the server, Please verify the settings are correct.');
1074 if ( is_wp_error($error) )
1075 $error_string = esc_html( $error->get_error_message() );
1076 echo '<div id="message" class="error"><p>' . $error_string . '</p></div>';
1080 if ( extension_loaded('ftp') || extension_loaded('sockets') || function_exists('fsockopen') )
1081 $types[ 'ftp' ] = __('FTP');
1082 if ( extension_loaded('ftp') ) //Only this supports FTPS
1083 $types[ 'ftps' ] = __('FTPS (SSL)');
1084 if ( extension_loaded('ssh2') && function_exists('stream_get_contents') )
1085 $types[ 'ssh' ] = __('SSH2');
1088 * Filter the connection types to output to the filesystem credentials form.
1092 * @param array $types Types of connections.
1093 * @param array $credentials Credentials to connect with.
1094 * @param string $type Chosen filesystem method.
1095 * @param object $error Error object.
1096 * @param string $context Full path to the directory that is tested
1097 * for being writable.
1099 $types = apply_filters( 'fs_ftp_connection_types', $types, $credentials, $type, $error, $context );
1102 <script type="text/javascript">
1105 jQuery("#ssh").click(function () {
1106 jQuery("#ssh_keys").show();
1108 jQuery("#ftp, #ftps").click(function () {
1109 jQuery("#ssh_keys").hide();
1111 jQuery('form input[value=""]:first').focus();
1115 <form action="<?php echo esc_url( $form_post ) ?>" method="post">
1117 <h3><?php _e('Connection Information') ?></h3>
1119 $label_user = __('Username');
1120 $label_pass = __('Password');
1121 _e('To perform the requested action, WordPress needs to access your web server.');
1123 if ( ( isset( $types['ftp'] ) || isset( $types['ftps'] ) ) ) {
1124 if ( isset( $types['ssh'] ) ) {
1125 _e('Please enter your FTP or SSH credentials to proceed.');
1126 $label_user = __('FTP/SSH Username');
1127 $label_pass = __('FTP/SSH Password');
1129 _e('Please enter your FTP credentials to proceed.');
1130 $label_user = __('FTP Username');
1131 $label_pass = __('FTP Password');
1135 _e('If you do not remember your credentials, you should contact your web host.');
1137 <table class="form-table">
1139 <th scope="row"><label for="hostname"><?php _e('Hostname') ?></label></th>
1140 <td><input name="hostname" type="text" id="hostname" value="<?php echo esc_attr($hostname); if ( !empty($port) ) echo ":$port"; ?>"<?php disabled( defined('FTP_HOST') ); ?> size="40" /></td>
1144 <th scope="row"><label for="username"><?php echo $label_user; ?></label></th>
1145 <td><input name="username" type="text" id="username" value="<?php echo esc_attr($username) ?>"<?php disabled( defined('FTP_USER') ); ?> size="40" /></td>
1149 <th scope="row"><label for="password"><?php echo $label_pass; ?></label></th>
1150 <td><div><input name="password" type="password" id="password" value="<?php if ( defined('FTP_PASS') ) echo '*****'; ?>"<?php disabled( defined('FTP_PASS') ); ?> size="40" /></div>
1151 <div><em><?php if ( ! defined('FTP_PASS') ) _e( 'This password will not be stored on the server.' ); ?></em></div></td>
1154 <?php if ( isset($types['ssh']) ) : ?>
1155 <tr id="ssh_keys" style="<?php if ( 'ssh' != $connection_type ) echo 'display:none' ?>">
1156 <th scope="row"><?php _e('Authentication Keys') ?>
1157 <div class="key-labels textright">
1158 <label for="public_key"><?php _e('Public Key:') ?></label ><br />
1159 <label for="private_key"><?php _e('Private Key:') ?></label>
1161 <td><br /><input name="public_key" type="text" id="public_key" value="<?php echo esc_attr($public_key) ?>"<?php disabled( defined('FTP_PUBKEY') ); ?> size="40" />
1162 <br /><input name="private_key" type="text" id="private_key" value="<?php echo esc_attr($private_key) ?>"<?php disabled( defined('FTP_PRIKEY') ); ?> size="40" />
1163 <div><?php _e('Enter the location on the server where the keys are located. If a passphrase is needed, enter that in the password field above.') ?></div></td>
1168 <th scope="row"><?php _e('Connection Type') ?></th>
1170 <fieldset><legend class="screen-reader-text"><span><?php _e('Connection Type') ?></span></legend>
1172 $disabled = disabled( (defined('FTP_SSL') && FTP_SSL) || (defined('FTP_SSH') && FTP_SSH), true, false );
1173 foreach ( $types as $name => $text ) : ?>
1174 <label for="<?php echo esc_attr($name) ?>">
1175 <input type="radio" name="connection_type" id="<?php echo esc_attr($name) ?>" value="<?php echo esc_attr($name) ?>"<?php checked($name, $connection_type); echo $disabled; ?> />
1178 <?php endforeach; ?>
1185 foreach ( (array) $extra_fields as $field ) {
1186 if ( isset( $_POST[ $field ] ) )
1187 echo '<input type="hidden" name="' . esc_attr( $field ) . '" value="' . esc_attr( wp_unslash( $_POST[ $field ] ) ) . '" />';
1189 submit_button( __( 'Proceed' ), 'button', 'upgrade' );