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<?php
/**
* Functions for reading, writing, modifying, and deleting files on the file system.
* Includes functionality for theme-specific files as well as operations for uploading,
* archiving, and rendering output when necessary.
*
* @package WordPress
* @subpackage Administration
*/
/** The descriptions for theme files. */
$wp_file_descriptions = array(
'index.php' => __( 'Main Index Template' ),
'style.css' => __( 'Stylesheet' ),
'editor-style.css' => __( 'Visual Editor Stylesheet' ),
'editor-style-rtl.css' => __( 'Visual Editor RTL Stylesheet' ),
'rtl.css' => __( 'RTL Stylesheet' ),
'comments.php' => __( 'Comments' ),
'comments-popup.php' => __( 'Popup Comments' ),
'footer.php' => __( 'Footer' ),
'header.php' => __( 'Header' ),
'sidebar.php' => __( 'Sidebar' ),
'archive.php' => __( 'Archives' ),
'author.php' => __( 'Author Template' ),
'tag.php' => __( 'Tag Template' ),
'category.php' => __( 'Category Template' ),
'page.php' => __( 'Page Template' ),
'search.php' => __( 'Search Results' ),
'searchform.php' => __( 'Search Form' ),
'single.php' => __( 'Single Post' ),
'404.php' => __( '404 Template' ),
'link.php' => __( 'Links Template' ),
'functions.php' => __( 'Theme Functions' ),
'attachment.php' => __( 'Attachment Template' ),
'image.php' => __('Image Attachment Template'),
'video.php' => __('Video Attachment Template'),
'audio.php' => __('Audio Attachment Template'),
'application.php' => __('Application Attachment Template'),
'my-hacks.php' => __( 'my-hacks.php (legacy hacks support)' ),
'.htaccess' => __( '.htaccess (for rewrite rules )' ),
// Deprecated files
'wp-layout.css' => __( 'Stylesheet' ),
'wp-comments.php' => __( 'Comments Template' ),
'wp-comments-popup.php' => __( 'Popup Comments Template' ),
);
/**
* Get the description for standard WordPress theme files and other various standard
* WordPress files
*
* @since 1.5.0
*
* @uses $wp_file_descriptions
* @param string $file Filesystem path or filename
* @return string Description of file from $wp_file_descriptions or basename of $file if description doesn't exist
*/
function get_file_description( $file ) {
global $wp_file_descriptions;
if ( isset( $wp_file_descriptions[basename( $file )] ) ) {
return $wp_file_descriptions[basename( $file )];
}
elseif ( file_exists( $file ) && is_file( $file ) ) {
$template_data = implode( '', file( $file ) );
if ( preg_match( '|Template Name:(.*)$|mi', $template_data, $name ))
return sprintf( __( '%s Page Template' ), _cleanup_header_comment($name[1]) );
}
return trim( basename( $file ) );
}
/**
* Get the absolute filesystem path to the root of the WordPress installation
*
* @since 1.5.0
*
* @return string Full filesystem path to the root of the WordPress installation
*/
function get_home_path() {
$home = set_url_scheme( get_option( 'home' ), 'http' );
$siteurl = set_url_scheme( get_option( 'siteurl' ), 'http' );
if ( ! empty( $home ) && 0 !== strcasecmp( $home, $siteurl ) ) {
$wp_path_rel_to_home = str_ireplace( $home, '', $siteurl ); /* $siteurl - $home */
$pos = strripos( str_replace( '\\', '/', $_SERVER['SCRIPT_FILENAME'] ), trailingslashit( $wp_path_rel_to_home ) );
$home_path = substr( $_SERVER['SCRIPT_FILENAME'], 0, $pos );
$home_path = trailingslashit( $home_path );
} else {
$home_path = ABSPATH;
}
return str_replace( '\\', '/', $home_path );
}
/**
* Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep.
* The depth of the recursiveness can be controlled by the $levels param.
*
* @since 2.6.0
*
* @param string $folder Optional. Full path to folder. Default empty.
* @param int $levels Optional. Levels of folders to follow, Default 100 (PHP Loop limit).
* @return bool|array False on failure, Else array of files
*/
function list_files( $folder = '', $levels = 100 ) {
if ( empty($folder) )
return false;
if ( ! $levels )
return false;
$files = array();
if ( $dir = @opendir( $folder ) ) {
while (($file = readdir( $dir ) ) !== false ) {
if ( in_array($file, array('.', '..') ) )
continue;
if ( is_dir( $folder . '/' . $file ) ) {
$files2 = list_files( $folder . '/' . $file, $levels - 1);
if ( $files2 )
$files = array_merge($files, $files2 );
else
$files[] = $folder . '/' . $file . '/';
} else {
$files[] = $folder . '/' . $file;
}
}
}
@closedir( $dir );
return $files;
}
/**
* Returns a filename of a Temporary unique file.
* Please note that the calling function must unlink() this itself.
*
* The filename is based off the passed parameter or defaults to the current unix timestamp,
* while the directory can either be passed as well, or by leaving it blank, default to a writable temporary directory.
*
* @since 2.6.0
*
* @param string $filename Optional. Filename to base the Unique file off. Default empty.
* @param string $dir Optional. Directory to store the file in. Default empty.
* @return string a writable filename
*/
function wp_tempnam( $filename = '', $dir = '' ) {
if ( empty( $dir ) ) {
$dir = get_temp_dir();
}
if ( empty( $filename ) || '.' == $filename || '/' == $filename ) {
$filename = time();
}
// Use the basename of the given file without the extension as the name for the temporary directory
$temp_filename = basename( $filename );
$temp_filename = preg_replace( '|\.[^.]*$|', '', $temp_filename );
// If the folder is falsey, use it's parent directory name instead
if ( ! $temp_filename ) {
return wp_tempnam( dirname( $filename ), $dir );
}
$temp_filename .= '.tmp';
$temp_filename = $dir . wp_unique_filename( $dir, $temp_filename );
touch( $temp_filename );
return $temp_filename;
}
/**
* Make sure that the file that was requested to edit, is allowed to be edited
*
* Function will die if if you are not allowed to edit the file
*
* @since 1.5.0
*
* @param string $file file the users is attempting to edit
* @param array $allowed_files Array of allowed files to edit, $file must match an entry exactly
* @return string|null
*/
function validate_file_to_edit( $file, $allowed_files = '' ) {
$code = validate_file( $file, $allowed_files );
if (!$code )
return $file;
switch ( $code ) {
case 1 :
wp_die( __( 'Sorry, that file cannot be edited.' ) );
// case 2 :
// wp_die( __('Sorry, can’t call files with their real path.' ));
case 3 :
wp_die( __( 'Sorry, that file cannot be edited.' ) );
}
}
/**
* Handle PHP uploads in WordPress, sanitizing file names, checking extensions for mime type,
* and moving the file to the appropriate directory within the uploads directory.
*
* @since 4.0.0
*
* @see wp_handle_upload_error
*
* @param array $file Reference to a single element of $_FILES. Call the function once for each uploaded file.
* @param array|false $overrides An associative array of names => values to override default variables. Default false.
* @param string $time Time formatted in 'yyyy/mm'.
* @param string $action Expected value for $_POST['action'].
* @return array On success, returns an associative array of file attributes. On failure, returns
* $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
*/
function _wp_handle_upload( &$file, $overrides, $time, $action ) {
// The default error handler.
if ( ! function_exists( 'wp_handle_upload_error' ) ) {
function wp_handle_upload_error( &$file, $message ) {
return array( 'error' => $message );
}
}
/**
* Filter the data for a file before it is uploaded to WordPress.
*
* The dynamic portion of the hook name, `$action`, refers to the post action.
*
* @since 2.9.0 as 'wp_handle_upload_prefilter'.
* @since 4.0.0 Converted to a dynamic hook with `$action`.
*
* @param array $file An array of data for a single file.
*/
$file = apply_filters( "{$action}_prefilter", $file );
// You may define your own function and pass the name in $overrides['upload_error_handler']
$upload_error_handler = 'wp_handle_upload_error';
if ( isset( $overrides['upload_error_handler'] ) ) {
$upload_error_handler = $overrides['upload_error_handler'];
}
// You may have had one or more 'wp_handle_upload_prefilter' functions error out the file. Handle that gracefully.
if ( isset( $file['error'] ) && ! is_numeric( $file['error'] ) && $file['error'] ) {
return $upload_error_handler( $file, $file['error'] );
}
// Install user overrides. Did we mention that this voids your warranty?
// You may define your own function and pass the name in $overrides['unique_filename_callback']
$unique_filename_callback = null;
if ( isset( $overrides['unique_filename_callback'] ) ) {
$unique_filename_callback = $overrides['unique_filename_callback'];
}
/*
* This may not have orignially been intended to be overrideable,
* but historically has been.
*/
if ( isset( $overrides['upload_error_strings'] ) ) {
$upload_error_strings = $overrides['upload_error_strings'];
} else {
// Courtesy of php.net, the strings that describe the error indicated in $_FILES[{form field}]['error'].
$upload_error_strings = array(
false,
__( 'The uploaded file exceeds the upload_max_filesize directive in php.ini.' ),
__( 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.' ),
__( 'The uploaded file was only partially uploaded.' ),
__( 'No file was uploaded.' ),
'',
__( 'Missing a temporary folder.' ),
__( 'Failed to write file to disk.' ),
__( 'File upload stopped by extension.' )
);
}
// All tests are on by default. Most can be turned off by $overrides[{test_name}] = false;
$test_form = isset( $overrides['test_form'] ) ? $overrides['test_form'] : true;
$test_size = isset( $overrides['test_size'] ) ? $overrides['test_size'] : true;
// If you override this, you must provide $ext and $type!!
$test_type = isset( $overrides['test_type'] ) ? $overrides['test_type'] : true;
$mimes = isset( $overrides['mimes'] ) ? $overrides['mimes'] : false;
// A correct form post will pass this test.
if ( $test_form && ( ! isset( $_POST['action'] ) || ( $_POST['action'] != $action ) ) ) {
return call_user_func( $upload_error_handler, $file, __( 'Invalid form submission.' ) );
}
// A successful upload will pass this test. It makes no sense to override this one.
if ( isset( $file['error'] ) && $file['error'] > 0 ) {
return call_user_func( $upload_error_handler, $file, $upload_error_strings[ $file['error'] ] );
}
$test_file_size = 'wp_handle_upload' === $action ? $file['size'] : filesize( $file['tmp_name'] );
// A non-empty file will pass this test.
if ( $test_size && ! ( $test_file_size > 0 ) ) {
if ( is_multisite() ) {
$error_msg = __( 'File is empty. Please upload something more substantial.' );
} else {
$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.' );
}
return call_user_func( $upload_error_handler, $file, $error_msg );
}
// A properly uploaded file will pass this test. There should be no reason to override this one.
$test_uploaded_file = 'wp_handle_upload' === $action ? @ is_uploaded_file( $file['tmp_name'] ) : @ is_file( $file['tmp_name'] );
if ( ! $test_uploaded_file ) {
return call_user_func( $upload_error_handler, $file, __( 'Specified file failed upload test.' ) );
}
// A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter.
if ( $test_type ) {
$wp_filetype = wp_check_filetype_and_ext( $file['tmp_name'], $file['name'], $mimes );
$ext = empty( $wp_filetype['ext'] ) ? '' : $wp_filetype['ext'];
$type = empty( $wp_filetype['type'] ) ? '' : $wp_filetype['type'];
$proper_filename = empty( $wp_filetype['proper_filename'] ) ? '' : $wp_filetype['proper_filename'];
// Check to see if wp_check_filetype_and_ext() determined the filename was incorrect
if ( $proper_filename ) {
$file['name'] = $proper_filename;
}
if ( ( ! $type || !$ext ) && ! current_user_can( 'unfiltered_upload' ) ) {
return call_user_func( $upload_error_handler, $file, __( 'Sorry, this file type is not permitted for security reasons.' ) );
}
if ( ! $type ) {
$type = $file['type'];
}
} else {
$type = '';
}
/*
* A writable uploads dir will pass this test. Again, there's no point
* overriding this one.
*/
if ( ! ( ( $uploads = wp_upload_dir( $time ) ) && false === $uploads['error'] ) ) {
return call_user_func( $upload_error_handler, $file, $uploads['error'] );
}
$filename = wp_unique_filename( $uploads['path'], $file['name'], $unique_filename_callback );
// Move the file to the uploads dir.
$new_file = $uploads['path'] . "/$filename";
if ( 'wp_handle_upload' === $action ) {
$move_new_file = @ move_uploaded_file( $file['tmp_name'], $new_file );
} else {
$move_new_file = @ rename( $file['tmp_name'], $new_file );
}
if ( false === $move_new_file ) {
if ( 0 === strpos( $uploads['basedir'], ABSPATH ) ) {
$error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir'];
} else {
$error_path = basename( $uploads['basedir'] ) . $uploads['subdir'];
}
return $upload_error_handler( $file, sprintf( __('The uploaded file could not be moved to %s.' ), $error_path ) );
}
// Set correct file permissions.
$stat = stat( dirname( $new_file ));
$perms = $stat['mode'] & 0000666;
@ chmod( $new_file, $perms );
// Compute the URL.
$url = $uploads['url'] . "/$filename";
if ( is_multisite() ) {
delete_transient( 'dirsize_cache' );
}
/**
* Filter the data array for the uploaded file.
*
* @since 2.1.0
*
* @param array $upload {
* Array of upload data.
*
* @type string $file Filename of the newly-uploaded file.
* @type string $url URL of the uploaded file.
* @type string $type File type.
* }
* @param string $context The type of upload action. Values include 'upload' or 'sideload'.
*/
return apply_filters( 'wp_handle_upload', array(
'file' => $new_file,
'url' => $url,
'type' => $type
), 'wp_handle_sideload' === $action ? 'sideload' : 'upload' ); }
/**
* Wrapper for _wp_handle_upload(), passes 'wp_handle_upload' action.
*
* @since 2.0.0
*
* @see _wp_handle_upload()
*
* @param array $file Reference to a single element of $_FILES. Call the function once for
* each uploaded file.
* @param array|bool $overrides Optional. An associative array of names=>values to override default
* variables. Default false.
* @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.
* @return array On success, returns an associative array of file attributes. On failure, returns
* $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
*/
function wp_handle_upload( &$file, $overrides = false, $time = null ) {
/*
* $_POST['action'] must be set and its value must equal $overrides['action']
* or this:
*/
$action = 'wp_handle_upload';
if ( isset( $overrides['action'] ) ) {
$action = $overrides['action'];
}
return _wp_handle_upload( $file, $overrides, $time, $action );
}
/**
* Wrapper for _wp_handle_upload(), passes 'wp_handle_sideload' action
*
* @since 2.6.0
*
* @see _wp_handle_upload()
*
* @param array $file An array similar to that of a PHP $_FILES POST array
* @param array|bool $overrides Optional. An associative array of names=>values to override default
* variables. Default false.
* @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.
* @return array On success, returns an associative array of file attributes. On failure, returns
* $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
*/
function wp_handle_sideload( &$file, $overrides = false, $time = null ) {
/*
* $_POST['action'] must be set and its value must equal $overrides['action']
* or this:
*/
$action = 'wp_handle_sideload';
if ( isset( $overrides['action'] ) ) {
$action = $overrides['action'];
}
return _wp_handle_upload( $file, $overrides, $time, $action );
}
/**
* Downloads a url to a local temporary file using the WordPress HTTP Class.
* Please note, That the calling function must unlink() the file.
*
* @since 2.5.0
*
* @param string $url the URL of the file to download
* @param int $timeout The timeout for the request to download the file default 300 seconds
* @return mixed WP_Error on failure, string Filename on success.
*/
function download_url( $url, $timeout = 300 ) {
//WARNING: The file is not automatically deleted, The script must unlink() the file.
if ( ! $url )
return new WP_Error('http_no_url', __('Invalid URL Provided.'));
$tmpfname = wp_tempnam($url);
if ( ! $tmpfname )
return new WP_Error('http_no_file', __('Could not create Temporary file.'));
$response = wp_safe_remote_get( $url, array( 'timeout' => $timeout, 'stream' => true, 'filename' => $tmpfname ) );
if ( is_wp_error( $response ) ) {
unlink( $tmpfname );
return $response;
}
if ( 200 != wp_remote_retrieve_response_code( $response ) ){
unlink( $tmpfname );
return new WP_Error( 'http_404', trim( wp_remote_retrieve_response_message( $response ) ) );
}
$content_md5 = wp_remote_retrieve_header( $response, 'content-md5' );
if ( $content_md5 ) {
$md5_check = verify_file_md5( $tmpfname, $content_md5 );
if ( is_wp_error( $md5_check ) ) {
unlink( $tmpfname );
return $md5_check;
}
}
return $tmpfname;
}
/**
* Calculates and compares the MD5 of a file to its expected value.
*
* @since 3.7.0
*
* @param string $filename The filename to check the MD5 of.
* @param string $expected_md5 The expected MD5 of the file, either a base64 encoded raw md5, or a hex-encoded md5
* @return bool|object WP_Error on failure, true on success, false when the MD5 format is unknown/unexpected
*/
function verify_file_md5( $filename, $expected_md5 ) {
if ( 32 == strlen( $expected_md5 ) )
$expected_raw_md5 = pack( 'H*', $expected_md5 );
elseif ( 24 == strlen( $expected_md5 ) )
$expected_raw_md5 = base64_decode( $expected_md5 );
else
return false; // unknown format
$file_md5 = md5_file( $filename, true );
if ( $file_md5 === $expected_raw_md5 )
return true;
return new WP_Error( 'md5_mismatch', sprintf( __( 'The checksum of the file (%1$s) does not match the expected checksum value (%2$s).' ), bin2hex( $file_md5 ), bin2hex( $expected_raw_md5 ) ) );
}
/**
* Unzips a specified ZIP file to a location on the Filesystem via the WordPress Filesystem Abstraction.
* Assumes that WP_Filesystem() has already been called and set up. Does not extract a root-level __MACOSX directory, if present.
*
* Attempts to increase the PHP Memory limit to 256M before uncompressing,
* However, The most memory required shouldn't be much larger than the Archive itself.
*
* @since 2.5.0
*
* @param string $file Full path and filename of zip archive
* @param string $to Full path on the filesystem to extract archive to
* @return mixed WP_Error on failure, True on success
*/
function unzip_file($file, $to) {
global $wp_filesystem;
if ( ! $wp_filesystem || !is_object($wp_filesystem) )
return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
// Unzip can use a lot of memory, but not this much hopefully
/** This filter is documented in wp-admin/admin.php */
@ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', WP_MAX_MEMORY_LIMIT ) );
$needed_dirs = array();
$to = trailingslashit($to);
// Determine any parent dir's needed (of the upgrade directory)
if ( ! $wp_filesystem->is_dir($to) ) { //Only do parents if no children exist
$path = preg_split('![/\\\]!', untrailingslashit($to));
for ( $i = count($path); $i >= 0; $i-- ) {
if ( empty($path[$i]) )
continue;
$dir = implode('/', array_slice($path, 0, $i+1) );
if ( preg_match('!^[a-z]:$!i', $dir) ) // Skip it if it looks like a Windows Drive letter.
continue;
if ( ! $wp_filesystem->is_dir($dir) )
$needed_dirs[] = $dir;
else
break; // A folder exists, therefor, we dont need the check the levels below this
}
}
/**
* Filter whether to use ZipArchive to unzip archives.
*
* @since 3.0.0
*
* @param bool $ziparchive Whether to use ZipArchive. Default true.
*/
if ( class_exists( 'ZipArchive' ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) {
$result = _unzip_file_ziparchive($file, $to, $needed_dirs);
if ( true === $result ) {
return $result;
} elseif ( is_wp_error($result) ) {
if ( 'incompatible_archive' != $result->get_error_code() )
return $result;
}
}
// Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file.
return _unzip_file_pclzip($file, $to, $needed_dirs);
}
/**
* This function should not be called directly, use unzip_file instead. Attempts to unzip an archive using the ZipArchive class.
* Assumes that WP_Filesystem() has already been called and set up.
*
* @since 3.0.0
* @see unzip_file
* @access private
*
* @param string $file Full path and filename of zip archive
* @param string $to Full path on the filesystem to extract archive to
* @param array $needed_dirs A partial list of required folders needed to be created.
* @return mixed WP_Error on failure, True on success
*/
function _unzip_file_ziparchive($file, $to, $needed_dirs = array() ) {
global $wp_filesystem;
$z = new ZipArchive();
$zopen = $z->open( $file, ZIPARCHIVE::CHECKCONS );
if ( true !== $zopen )
return new WP_Error( 'incompatible_archive', __( 'Incompatible Archive.' ), array( 'ziparchive_error' => $zopen ) );
$uncompressed_size = 0;
for ( $i = 0; $i < $z->numFiles; $i++ ) {
if ( ! $info = $z->statIndex($i) )
return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) );
if ( '__MACOSX/' === substr($info['name'], 0, 9) ) // Skip the OS X-created __MACOSX directory
continue;
$uncompressed_size += $info['size'];
if ( '/' == substr($info['name'], -1) ) // directory
$needed_dirs[] = $to . untrailingslashit($info['name']);
else
$needed_dirs[] = $to . untrailingslashit(dirname($info['name']));
}
/*
* disk_free_space() could return false. Assume that any falsey value is an error.
* A disk that has zero free bytes has bigger problems.
* Require we have enough space to unzip the file and copy its contents, with a 10% buffer.
*/
if ( defined( 'DOING_CRON' ) && DOING_CRON ) {
$available_space = @disk_free_space( WP_CONTENT_DIR );
if ( $available_space && ( $uncompressed_size * 2.1 ) > $available_space )
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' ) );
}
$needed_dirs = array_unique($needed_dirs);
foreach ( $needed_dirs as $dir ) {
// Check the parent folders of the folders all exist within the creation array.
if ( untrailingslashit($to) == $dir ) // Skip over the working directory, We know this exists (or will exist)
continue;
if ( strpos($dir, $to) === false ) // If the directory is not within the working directory, Skip it
continue;
$parent_folder = dirname($dir);
while ( !empty($parent_folder) && untrailingslashit($to) != $parent_folder && !in_array($parent_folder, $needed_dirs) ) {
$needed_dirs[] = $parent_folder;
$parent_folder = dirname($parent_folder);
}
}
asort($needed_dirs);
// Create those directories if need be:
foreach ( $needed_dirs as $_dir ) {
// Only check to see if the Dir exists upon creation failure. Less I/O this way.
if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) ) {
return new WP_Error( 'mkdir_failed_ziparchive', __( 'Could not create directory.' ), substr( $_dir, strlen( $to ) ) );
}
}
unset($needed_dirs);
for ( $i = 0; $i < $z->numFiles; $i++ ) {
if ( ! $info = $z->statIndex($i) )
return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) );
if ( '/' == substr($info['name'], -1) ) // directory
continue;
if ( '__MACOSX/' === substr($info['name'], 0, 9) ) // Don't extract the OS X-created __MACOSX directory files
continue;
$contents = $z->getFromIndex($i);
if ( false === $contents )
return new WP_Error( 'extract_failed_ziparchive', __( 'Could not extract file from archive.' ), $info['name'] );
if ( ! $wp_filesystem->put_contents( $to . $info['name'], $contents, FS_CHMOD_FILE) )
return new WP_Error( 'copy_failed_ziparchive', __( 'Could not copy file.' ), $info['name'] );
}
$z->close();
return true;
}
/**
* This function should not be called directly, use unzip_file instead. Attempts to unzip an archive using the PclZip library.
* Assumes that WP_Filesystem() has already been called and set up.
*
* @since 3.0.0
* @see unzip_file
* @access private
*
* @param string $file Full path and filename of zip archive
* @param string $to Full path on the filesystem to extract archive to
* @param array $needed_dirs A partial list of required folders needed to be created.
* @return mixed WP_Error on failure, True on success
*/
function _unzip_file_pclzip($file, $to, $needed_dirs = array()) {
global $wp_filesystem;
mbstring_binary_safe_encoding();
require_once(ABSPATH . 'wp-admin/includes/class-pclzip.php');
$archive = new PclZip($file);
$archive_files = $archive->extract(PCLZIP_OPT_EXTRACT_AS_STRING);
reset_mbstring_encoding();
// Is the archive valid?
if ( !is_array($archive_files) )
return new WP_Error('incompatible_archive', __('Incompatible Archive.'), $archive->errorInfo(true));
if ( 0 == count($archive_files) )
return new WP_Error( 'empty_archive_pclzip', __( 'Empty archive.' ) );
$uncompressed_size = 0;
// Determine any children directories needed (From within the archive)
foreach ( $archive_files as $file ) {
if ( '__MACOSX/' === substr($file['filename'], 0, 9) ) // Skip the OS X-created __MACOSX directory
continue;
$uncompressed_size += $file['size'];
$needed_dirs[] = $to . untrailingslashit( $file['folder'] ? $file['filename'] : dirname($file['filename']) );
}
/*
* disk_free_space() could return false. Assume that any falsey value is an error.
* A disk that has zero free bytes has bigger problems.
* Require we have enough space to unzip the file and copy its contents, with a 10% buffer.
*/
if ( defined( 'DOING_CRON' ) && DOING_CRON ) {
$available_space = @disk_free_space( WP_CONTENT_DIR );
if ( $available_space && ( $uncompressed_size * 2.1 ) > $available_space )
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' ) );
}
$needed_dirs = array_unique($needed_dirs);
foreach ( $needed_dirs as $dir ) {
// Check the parent folders of the folders all exist within the creation array.
if ( untrailingslashit($to) == $dir ) // Skip over the working directory, We know this exists (or will exist)
continue;
if ( strpos($dir, $to) === false ) // If the directory is not within the working directory, Skip it
continue;
$parent_folder = dirname($dir);
while ( !empty($parent_folder) && untrailingslashit($to) != $parent_folder && !in_array($parent_folder, $needed_dirs) ) {
$needed_dirs[] = $parent_folder;
$parent_folder = dirname($parent_folder);
}
}
asort($needed_dirs);
// Create those directories if need be:
foreach ( $needed_dirs as $_dir ) {
// Only check to see if the dir exists upon creation failure. Less I/O this way.
if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) )
return new WP_Error( 'mkdir_failed_pclzip', __( 'Could not create directory.' ), substr( $_dir, strlen( $to ) ) );
}
unset($needed_dirs);
// Extract the files from the zip
foreach ( $archive_files as $file ) {
if ( $file['folder'] )
continue;
if ( '__MACOSX/' === substr($file['filename'], 0, 9) ) // Don't extract the OS X-created __MACOSX directory files
continue;
if ( ! $wp_filesystem->put_contents( $to . $file['filename'], $file['content'], FS_CHMOD_FILE) )
return new WP_Error( 'copy_failed_pclzip', __( 'Could not copy file.' ), $file['filename'] );
}
return true;
}
/**
* Copies a directory from one location to another via the WordPress Filesystem Abstraction.
* Assumes that WP_Filesystem() has already been called and setup.
*
* @since 2.5.0
*
* @param string $from source directory
* @param string $to destination directory
* @param array $skip_list a list of files/folders to skip copying
* @return mixed WP_Error on failure, True on success.
*/
function copy_dir($from, $to, $skip_list = array() ) {
global $wp_filesystem;
$dirlist = $wp_filesystem->dirlist($from);
$from = trailingslashit($from);
$to = trailingslashit($to);
foreach ( (array) $dirlist as $filename => $fileinfo ) {
if ( in_array( $filename, $skip_list ) )
continue;
if ( 'f' == $fileinfo['type'] ) {
if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE) ) {
// If copy failed, chmod file to 0644 and try again.
$wp_filesystem->chmod( $to . $filename, FS_CHMOD_FILE );
if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE) )
return new WP_Error( 'copy_failed_copy_dir', __( 'Could not copy file.' ), $to . $filename );
}
} elseif ( 'd' == $fileinfo['type'] ) {
if ( !$wp_filesystem->is_dir($to . $filename) ) {
if ( !$wp_filesystem->mkdir($to . $filename, FS_CHMOD_DIR) )
return new WP_Error( 'mkdir_failed_copy_dir', __( 'Could not create directory.' ), $to . $filename );
}
// generate the $sub_skip_list for the subdirectory as a sub-set of the existing $skip_list
$sub_skip_list = array();
foreach ( $skip_list as $skip_item ) {
if ( 0 === strpos( $skip_item, $filename . '/' ) )
$sub_skip_list[] = preg_replace( '!^' . preg_quote( $filename, '!' ) . '/!i', '', $skip_item );
}
$result = copy_dir($from . $filename, $to . $filename, $sub_skip_list);
if ( is_wp_error($result) )
return $result;
}
}
return true;
}
/**
* Initialises and connects the WordPress Filesystem Abstraction classes.
* This function will include the chosen transport and attempt connecting.
*
* Plugins may add extra transports, And force WordPress to use them by returning
* the filename via the {@see 'filesystem_method_file'} filter.
*
* @since 2.5.0
*
* @param array $args Optional. Connection args, These are passed directly to
* the `WP_Filesystem_*()` classes. Default false.
* @param string $context Optional. Context for {@see get_filesystem_method()}.
* Default false.
* @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable.
* Default false.
* @return null|boolean false on failure, true on success.
*/
function WP_Filesystem( $args = false, $context = false, $allow_relaxed_file_ownership = false ) {
global $wp_filesystem;
require_once(ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php');
$method = get_filesystem_method( $args, $context, $allow_relaxed_file_ownership );
if ( ! $method )
return false;
if ( ! class_exists("WP_Filesystem_$method") ) {
/**
* Filter the path for a specific filesystem method class file.
*
* @since 2.6.0
*
* @see get_filesystem_method()
*
* @param string $path Path to the specific filesystem method class file.
* @param string $method The filesystem method to use.
*/
$abstraction_file = apply_filters( 'filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method );
if ( ! file_exists($abstraction_file) )
return;
require_once($abstraction_file);
}
$method = "WP_Filesystem_$method";
$wp_filesystem = new $method($args);
//Define the timeouts for the connections. Only available after the construct is called to allow for per-transport overriding of the default.
if ( ! defined('FS_CONNECT_TIMEOUT') )
define('FS_CONNECT_TIMEOUT', 30);
if ( ! defined('FS_TIMEOUT') )
define('FS_TIMEOUT', 30);
if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
return false;
if ( !$wp_filesystem->connect() )
return false; //There was an error connecting to the server.
// Set the permission constants if not already set.
if ( ! defined('FS_CHMOD_DIR') )
define('FS_CHMOD_DIR', ( fileperms( ABSPATH ) & 0777 | 0755 ) );
if ( ! defined('FS_CHMOD_FILE') )
define('FS_CHMOD_FILE', ( fileperms( ABSPATH . 'index.php' ) & 0777 | 0644 ) );
return true;
}
/**
* Determines which method to use for reading, writing, modifying, or deleting
* files on the filesystem.
*
* The priority of the transports are: Direct, SSH2, FTP PHP Extension, FTP Sockets
* (Via Sockets class, or `fsockopen()`). Valid values for these are: 'direct', 'ssh2',
* 'ftpext' or 'ftpsockets'.
*
* The return value can be overridden by defining the `FS_METHOD` constant in `wp-config.php`,
* or filtering via {@see 'filesystem_method'}.
*
* @link https://codex.wordpress.org/Editing_wp-config.php#WordPress_Upgrade_Constants
*
* Plugins may define a custom transport handler, See WP_Filesystem().
*
* @since 2.5.0
*
* @param array $args Optional. Connection details. Default empty array.
* @param string $context Optional. Full path to the directory that is tested
* for being writable. Default false.
* @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable.
* Default false.
* @return string The transport to use, see description for valid return values.
*/
function get_filesystem_method( $args = array(), $context = false, $allow_relaxed_file_ownership = false ) {
$method = defined('FS_METHOD') ? FS_METHOD : false; // Please ensure that this is either 'direct', 'ssh2', 'ftpext' or 'ftpsockets'
if ( ! $context ) {
$context = WP_CONTENT_DIR;
}
// If the directory doesn't exist (wp-content/languages) then use the parent directory as we'll create it.
if ( WP_LANG_DIR == $context && ! is_dir( $context ) ) {
$context = dirname( $context );
}
$context = trailingslashit( $context );
if ( ! $method ) {
$temp_file_name = $context . 'temp-write-test-' . time();
$temp_handle = @fopen($temp_file_name, 'w');
if ( $temp_handle ) {
// Attempt to determine the file owner of the WordPress files, and that of newly created files
$wp_file_owner = $temp_file_owner = false;
if ( function_exists('fileowner') ) {
$wp_file_owner = @fileowner( __FILE__ );
$temp_file_owner = @fileowner( $temp_file_name );
}
if ( $wp_file_owner !== false && $wp_file_owner === $temp_file_owner ) {
// WordPress is creating files as the same owner as the WordPress files,
// this means it's safe to modify & create new files via PHP.
$method = 'direct';
$GLOBALS['_wp_filesystem_direct_method'] = 'file_owner';
} elseif ( $allow_relaxed_file_ownership ) {
// The $context directory is writable, and $allow_relaxed_file_ownership is set, this means we can modify files
// safely in this directory. This mode doesn't create new files, only alter existing ones.
$method = 'direct';
$GLOBALS['_wp_filesystem_direct_method'] = 'relaxed_ownership';
}
@fclose($temp_handle);
@unlink($temp_file_name);
}
}
if ( ! $method && isset($args['connection_type']) && 'ssh' == $args['connection_type'] && extension_loaded('ssh2') && function_exists('stream_get_contents') ) $method = 'ssh2';
if ( ! $method && extension_loaded('ftp') ) $method = 'ftpext';
if ( ! $method && ( extension_loaded('sockets') || function_exists('fsockopen') ) ) $method = 'ftpsockets'; //Sockets: Socket extension; PHP Mode: FSockopen / fwrite / fread
/**
* Filter the filesystem method to use.
*
* @since 2.6.0
*
* @param string $method Filesystem method to return.
* @param array $args An array of connection details for the method.
* @param string $context Full path to the directory that is tested for being writable.
* @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable.
*/
return apply_filters( 'filesystem_method', $method, $args, $context, $allow_relaxed_file_ownership );
}
/**
* Displays a form to the user to request for their FTP/SSH details in order
* to connect to the filesystem.
*
* All chosen/entered details are saved, Excluding the Password.
*
* Hostnames may be in the form of hostname:portnumber (eg: wordpress.org:2467)
* to specify an alternate FTP/SSH port.
*
* Plugins may override this form by returning true|false via the
* {@see 'request_filesystem_credentials'} filter.
*
* @since 2.5.
*
* @todo Properly mark optional arguments as such
*
* @param string $form_post the URL to post the form to
* @param string $type the chosen Filesystem method in use
* @param boolean $error if the current request has failed to connect
* @param string $context The directory which is needed access to, The write-test will be performed on this directory by get_filesystem_method()
* @param array $extra_fields Extra POST fields which should be checked for to be included in the post.
* @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable.
* @return boolean False on failure. True on success.
*/
function request_filesystem_credentials($form_post, $type = '', $error = false, $context = false, $extra_fields = null, $allow_relaxed_file_ownership = false ) {
/**
* Filter the filesystem credentials form output.
*
* Returning anything other than an empty string will effectively short-circuit
* output of the filesystem credentials form, returning that value instead.
*
* @since 2.5.0
*
* @param mixed $output Form output to return instead. Default empty.
* @param string $form_post URL to POST the form to.
* @param string $type Chosen type of filesystem.
* @param bool $error Whether the current request has failed to connect.
* Default false.
* @param string $context Full path to the directory that is tested for
* being writable.
* @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable.
* @param array $extra_fields Extra POST fields.
*/
$req_cred = apply_filters( 'request_filesystem_credentials', '', $form_post, $type, $error, $context, $extra_fields, $allow_relaxed_file_ownership );
if ( '' !== $req_cred )
return $req_cred;
if ( empty($type) ) {
$type = get_filesystem_method( array(), $context, $allow_relaxed_file_ownership );
}
if ( 'direct' == $type )
return true;
if ( is_null( $extra_fields ) )
$extra_fields = array( 'version', 'locale' );
$credentials = get_option('ftp_credentials', array( 'hostname' => '', 'username' => ''));
// 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)
$credentials['hostname'] = defined('FTP_HOST') ? FTP_HOST : (!empty($_POST['hostname']) ? wp_unslash( $_POST['hostname'] ) : $credentials['hostname']);
$credentials['username'] = defined('FTP_USER') ? FTP_USER : (!empty($_POST['username']) ? wp_unslash( $_POST['username'] ) : $credentials['username']);
$credentials['password'] = defined('FTP_PASS') ? FTP_PASS : (!empty($_POST['password']) ? wp_unslash( $_POST['password'] ) : '');
// Check to see if we are setting the public/private keys for ssh
$credentials['public_key'] = defined('FTP_PUBKEY') ? FTP_PUBKEY : (!empty($_POST['public_key']) ? wp_unslash( $_POST['public_key'] ) : '');
$credentials['private_key'] = defined('FTP_PRIKEY') ? FTP_PRIKEY : (!empty($_POST['private_key']) ? wp_unslash( $_POST['private_key'] ) : '');
// Sanitize the hostname, Some people might pass in odd-data:
$credentials['hostname'] = preg_replace('|\w+://|', '', $credentials['hostname']); //Strip any schemes off
if ( strpos($credentials['hostname'], ':') ) {
list( $credentials['hostname'], $credentials['port'] ) = explode(':', $credentials['hostname'], 2);
if ( ! is_numeric($credentials['port']) )
unset($credentials['port']);
} else {
unset($credentials['port']);
}
if ( ( defined( 'FTP_SSH' ) && FTP_SSH ) || ( defined( 'FS_METHOD' ) && 'ssh2' == FS_METHOD ) ) {
$credentials['connection_type'] = 'ssh';
} elseif ( ( defined( 'FTP_SSL' ) && FTP_SSL ) && 'ftpext' == $type ) { //Only the FTP Extension understands SSL
$credentials['connection_type'] = 'ftps';
} elseif ( ! empty( $_POST['connection_type'] ) ) {
$credentials['connection_type'] = wp_unslash( $_POST['connection_type'] );
} elseif ( ! isset( $credentials['connection_type'] ) ) { //All else fails (And it's not defaulted to something else saved), Default to FTP
$credentials['connection_type'] = 'ftp';
}
if ( ! $error &&
(
( !empty($credentials['password']) && !empty($credentials['username']) && !empty($credentials['hostname']) ) ||
( 'ssh' == $credentials['connection_type'] && !empty($credentials['public_key']) && !empty($credentials['private_key']) )
) ) {
$stored_credentials = $credentials;
if ( !empty($stored_credentials['port']) ) //save port as part of hostname to simplify above code.
$stored_credentials['hostname'] .= ':' . $stored_credentials['port'];
unset($stored_credentials['password'], $stored_credentials['port'], $stored_credentials['private_key'], $stored_credentials['public_key']);
if ( ! defined( 'WP_INSTALLING' ) ) {
update_option( 'ftp_credentials', $stored_credentials );
}
return $credentials;
}
$hostname = isset( $credentials['hostname'] ) ? $credentials['hostname'] : '';
$username = isset( $credentials['username'] ) ? $credentials['username'] : '';
$public_key = isset( $credentials['public_key'] ) ? $credentials['public_key'] : '';
$private_key = isset( $credentials['private_key'] ) ? $credentials['private_key'] : '';
$port = isset( $credentials['port'] ) ? $credentials['port'] : '';
$connection_type = isset( $credentials['connection_type'] ) ? $credentials['connection_type'] : '';
if ( $error ) {
$error_string = __('<strong>ERROR:</strong> There was an error connecting to the server, Please verify the settings are correct.');
if ( is_wp_error($error) )
$error_string = esc_html( $error->get_error_message() );
echo '<div id="message" class="error"><p>' . $error_string . '</p></div>';
}
$types = array();
if ( extension_loaded('ftp') || extension_loaded('sockets') || function_exists('fsockopen') )
$types[ 'ftp' ] = __('FTP');
if ( extension_loaded('ftp') ) //Only this supports FTPS
$types[ 'ftps' ] = __('FTPS (SSL)');
if ( extension_loaded('ssh2') && function_exists('stream_get_contents') )
$types[ 'ssh' ] = __('SSH2');
/**
* Filter the connection types to output to the filesystem credentials form.
*
* @since 2.9.0
*
* @param array $types Types of connections.
* @param array $credentials Credentials to connect with.
* @param string $type Chosen filesystem method.
* @param object $error Error object.
* @param string $context Full path to the directory that is tested
* for being writable.
*/
$types = apply_filters( 'fs_ftp_connection_types', $types, $credentials, $type, $error, $context );
?>
<script type="text/javascript">
<!--
jQuery(function($){
jQuery("#ssh").click(function () {
jQuery("#ssh_keys").show();
});
jQuery("#ftp, #ftps").click(function () {
jQuery("#ssh_keys").hide();
});
jQuery('#request-filesystem-credentials-form input[value=""]:first').focus();
});
-->
</script>
<form action="<?php echo esc_url( $form_post ) ?>" method="post">
<div id="request-filesystem-credentials-form" class="request-filesystem-credentials-form">
<h3 id="request-filesystem-credentials-title"><?php _e( 'Connection Information' ) ?></h3>
<p id="request-filesystem-credentials-desc"><?php
$label_user = __('Username');
$label_pass = __('Password');
_e('To perform the requested action, WordPress needs to access your web server.');
echo ' ';
if ( ( isset( $types['ftp'] ) || isset( $types['ftps'] ) ) ) {
if ( isset( $types['ssh'] ) ) {
_e('Please enter your FTP or SSH credentials to proceed.');
$label_user = __('FTP/SSH Username');
$label_pass = __('FTP/SSH Password');
} else {
_e('Please enter your FTP credentials to proceed.');
$label_user = __('FTP Username');
$label_pass = __('FTP Password');
}
echo ' ';
}
_e('If you do not remember your credentials, you should contact your web host.');
?></p>
<label for="hostname">
<span class="field-title"><?php _e( 'Hostname' ) ?></span>
<input name="hostname" type="text" id="hostname" aria-describedby="request-filesystem-credentials-desc" class="code" placeholder="<?php esc_attr_e( 'example: www.wordpress.org' ) ?>" value="<?php echo esc_attr($hostname); if ( !empty($port) ) echo ":$port"; ?>"<?php disabled( defined('FTP_HOST') ); ?> />
</label>
<div class="ftp-username">
<label for="username">
<span class="field-title"><?php echo $label_user; ?></span>
<input name="username" type="text" id="username" value="<?php echo esc_attr($username) ?>"<?php disabled( defined('FTP_USER') ); ?> />
</label>
</div>
<div class="ftp-password">
<label for="password">
<span class="field-title"><?php echo $label_pass; ?></span>
<input name="password" type="password" id="password" value="<?php if ( defined('FTP_PASS') ) echo '*****'; ?>"<?php disabled( defined('FTP_PASS') ); ?> />
<em><?php if ( ! defined('FTP_PASS') ) _e( 'This password will not be stored on the server.' ); ?></em>
</label>
</div>
<?php if ( isset($types['ssh']) ) : ?>
<h4><?php _e('Authentication Keys') ?></h4>
<label for="public_key">
<span class="field-title"><?php _e('Public Key:') ?></span>
<input name="public_key" type="text" id="public_key" aria-describedby="auth-keys-desc" value="<?php echo esc_attr($public_key) ?>"<?php disabled( defined('FTP_PUBKEY') ); ?> />
</label>
<label for="private_key">
<span class="field-title"><?php _e('Private Key:') ?></span>
<input name="private_key" type="text" id="private_key" value="<?php echo esc_attr($private_key) ?>"<?php disabled( defined('FTP_PRIKEY') ); ?> />
</label>
<span id="auth-keys-desc"><?php _e('Enter the location on the server where the public and private keys are located. If a passphrase is needed, enter that in the password field above.') ?></span>
<?php endif; ?>
<h4><?php _e('Connection Type') ?></h4>
<fieldset><legend class="screen-reader-text"><span><?php _e('Connection Type') ?></span></legend>
<?php
$disabled = disabled( (defined('FTP_SSL') && FTP_SSL) || (defined('FTP_SSH') && FTP_SSH), true, false );
foreach ( $types as $name => $text ) : ?>
<label for="<?php echo esc_attr($name) ?>">
<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; ?> />
<?php echo $text ?>
</label>
<?php endforeach; ?>
</fieldset>
<?php
foreach ( (array) $extra_fields as $field ) {
if ( isset( $_POST[ $field ] ) )
echo '<input type="hidden" name="' . esc_attr( $field ) . '" value="' . esc_attr( wp_unslash( $_POST[ $field ] ) ) . '" />';
}
?>
<p class="request-filesystem-credentials-action-buttons">
<button class="button cancel-button" data-js-action="close" type="button"><?php _e( 'Cancel' ); ?></button>
<?php submit_button( __( 'Proceed' ), 'button', 'upgrade', false ); ?>
</p>
</div>
</form>
<?php
return false;
}
/**
* Print the filesystem credentials modal when needed.
*
* @since 4.2.0
*/
function wp_print_request_filesystem_credentials_modal() {
$filesystem_method = get_filesystem_method();
ob_start();
$filesystem_credentials_are_stored = request_filesystem_credentials( self_admin_url() );
ob_end_clean();
$request_filesystem_credentials = ( $filesystem_method != 'direct' && ! $filesystem_credentials_are_stored );
if ( ! $request_filesystem_credentials ) {
return;
}
?>
<div id="request-filesystem-credentials-dialog" class="notification-dialog-wrap request-filesystem-credentials-dialog">
<div class="notification-dialog-background"></div>
<div class="notification-dialog" role="dialog" aria-labelledby="request-filesystem-credentials-title" tabindex="0">
<div class="request-filesystem-credentials-dialog-content">
<?php request_filesystem_credentials( site_url() ); ?>
<div>
</div>
</div>
<?php
}
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