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<?php
class WPMDB_Filesystem {
private $wp_filesystem;
private $credentials;
private $use_filesystem = false;
private $chmod_dir;
private $chmod_file;
/**
* Pass `true` when instantiating to skip using WP_Filesystem
*
* @param bool $force_no_fs
*/
public function __construct( $force_no_fs = false ) {
if ( ! $force_no_fs && function_exists( 'request_filesystem_credentials' ) ) {
if ( ( defined( 'WPMDB_WP_FILESYSTEM' ) && WPMDB_WP_FILESYSTEM ) || ! defined( 'WPMDB_WP_FILESYSTEM' ) ) {
$this->maybe_init_wp_filesystem();
}
}
// Set default permissions
if ( defined( 'FS_CHMOD_DIR' ) ) {
$this->chmod_dir = FS_CHMOD_DIR;
} else {
$this->chmod_dir = ( fileperms( ABSPATH ) & 0777 | 0755 );
}
if ( defined( 'FS_CHMOD_FILE' ) ) {
$this->chmod_file = FS_CHMOD_FILE;
} else {
$this->chmod_file = ( fileperms( ABSPATH . 'index.php' ) & 0777 | 0644 );
}
}
/**
* Getter for the instantiated WP_Filesystem
*
* @return WP_Filesystem|false
*
* This should be used carefully since $wp_filesystem won't always have a value.
*/
public function get_wp_filesystem() {
if ( $this->use_filesystem ) {
return $this->wp_filesystem;
} else {
return false;
}
}
/**
* Is WP_Filesystem being used?
*
* @return bool
*/
public function using_wp_filesystem() {
return $this->use_filesystem;
}
/**
* Attempts to use the correct path for the FS method being used
*
* @param string $abs_path
*
* @return string
*/
public function get_sanitized_path( $abs_path ) {
if ( $this->using_wp_filesystem() ) {
return str_replace( ABSPATH, $this->wp_filesystem->abspath(), $abs_path );
}
return $abs_path;
}
/**
* Attempt to initiate WP_Filesystem
*
* If this fails, $use_filesystem is set to false and all methods in this class should use native php fallbacks
* Thwarts `request_filesystem_credentials()` attempt to display a form for obtaining creds from users
*
* TODO: provide notice and input in wp-admin for users when this fails
*/
public function maybe_init_wp_filesystem() {
ob_start();
$this->credentials = request_filesystem_credentials( '', '', false, false, null );
$ob_contents = ob_get_contents();
ob_end_clean();
if ( wp_filesystem( $this->credentials ) ) {
global $wp_filesystem;
$this->wp_filesystem = $wp_filesystem;
$this->use_filesystem = true;
}
}
/**
* Create file if not exists then set mtime and atime on file
*
* @param string $abs_path
* @param int $time
* @param int $atime
*
* @return bool
*/
public function touch( $abs_path, $time = 0, $atime = 0 ) {
if ( 0 == $time ) {
$time = time();
}
if ( 0 == $atime ) {
$atime = time();
}
$return = @touch( $abs_path, $time, $atime );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->touch( $abs_path, $time, $atime );
}
return $return;
}
/**
* file_put_contents with chmod
*
* @param string $abs_path
* @param string $contents
*
* @return bool
*/
public function put_contents( $abs_path, $contents ) {
$return = @file_put_contents( $abs_path, $contents );
$this->chmod( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->put_contents( $abs_path, $contents, $this->chmod_file );
}
return (bool) $return;
}
/**
* Does the specified file or dir exist
*
* @param string $abs_path
*
* @return bool
*/
public function file_exists( $abs_path ) {
$return = file_exists( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->exists( $abs_path );
}
return (bool) $return;
}
/**
* Get a file's size
*
* @param string $abs_path
*
* @return int
*/
public function filesize( $abs_path ) {
$return = filesize( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->size( $abs_path );
}
return $return;
}
/**
* Get the contents of a file as a string
*
* @param string $abs_path
*
* @return string
*/
public function get_contents( $abs_path ) {
$return = @file_get_contents( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->get_contents( $abs_path );
}
return $return;
}
/**
* Delete a file
*
* @param string $abs_path
*
* @return bool
*/
public function unlink( $abs_path ) {
$return = @unlink( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->delete( $abs_path, false, false );
}
return $return;
}
/**
* chmod a file
*
* @param string $abs_path
* @param int $perms
*
* @return bool
*
* Leave $perms blank to use $this->chmod_file/DIR or pass value like 0777
*/
public function chmod( $abs_path, $perms = null ) {
if ( is_null( $perms ) ) {
$perms = $this->is_file( $abs_path ) ? $this->chmod_file : $this->chmod_dir;
}
$return = @chmod( $abs_path, $perms );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->chmod( $abs_path, $perms, false );
}
return $return;
}
/**
* Is the specified path a directory?
*
* @param string $abs_path
*
* @return bool
*/
public function is_dir( $abs_path ) {
$return = is_dir( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->is_dir( $abs_path );
}
return $return;
}
/**
* Is the specified path a file?
*
* @param string $abs_path
*
* @return bool
*/
public function is_file( $abs_path ) {
$return = is_file( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->is_file( $abs_path );
}
return $return;
}
/**
* Is the specified path readable
*
* @param string $abs_path
*
* @return bool
*/
public function is_readable( $abs_path ) {
$return = is_readable( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->is_readable( $abs_path );
}
return $return;
}
/**
* Is the specified path writable
*
* @param string $abs_path
*
* @return bool
*/
public function is_writable( $abs_path ) {
$return = is_writable( $abs_path );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
$return = $this->wp_filesystem->is_writable( $abs_path );
}
return $return;
}
/**
* Recursive mkdir
*
* @param string $abs_path
* @param int $perms
*
* @return bool
*/
public function mkdir( $abs_path, $perms = null ) {
if ( is_null( $perms ) ) {
$perms = $this->chmod_dir;
}
if ( $this->is_dir( $abs_path ) ) {
$this->chmod( $perms );
return true;
}
try {
$mkdirp = wp_mkdir_p( $abs_path );
} catch ( Exception $e ) {
$mkdirp = false;
}
if ( $mkdirp ) {
$this->chmod( $perms );
return true;
}
$return = @mkdir( $abs_path, $perms, true );
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
if ( $this->is_dir( $abs_path ) ) {
return true;
}
// WP_Filesystem doesn't offer a recursive mkdir()
$abs_path = str_replace( '//', '/', $abs_path );
$abs_path = rtrim( $abs_path, '/' );
if ( empty( $abs_path ) ) {
$abs_path = '/';
}
$dirs = explode( '/', ltrim( $abs_path, '/' ) );
$current_dir = '';
foreach ( $dirs as $dir ) {
$current_dir .= '/' . $dir;
if ( ! $this->is_dir( $current_dir ) ) {
$this->wp_filesystem->mkdir( $current_dir, $perms );
}
}
$return = $this->is_dir( $abs_path );
}
return $return;
}
/**
* Delete a directory
*
* @param string $abs_path
* @param bool $recursive
*
* @return bool
*/
public function rmdir( $abs_path, $recursive = false ) {
if ( ! $this->is_dir( $abs_path ) ) {
return false;
}
// taken from WP_Filesystem_Direct
if ( ! $recursive ) {
$return = @rmdir( $abs_path );
} else {
// At this point it's a folder, and we're in recursive mode
$abs_path = trailingslashit( $abs_path );
$filelist = $this->scandir( $abs_path );
$return = true;
if ( is_array( $filelist ) ) {
foreach ( $filelist as $filename => $fileinfo ) {
if ( 'd' === $fileinfo['type'] ) {
$return = $this->rmdir( $abs_path . $filename, $recursive );
} else {
$return = $this->unlink( $abs_path . $filename );
}
}
}
if ( file_exists( $abs_path ) && ! @rmdir( $abs_path ) ) {
$return = false;
}
}
if ( ! $return && $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
return $this->wp_filesystem->rmdir( $abs_path, $recursive );
}
return $return;
}
/**
* Get a list of files/folders under specified directory
*
* @param $abs_path
*
* @return array|bool
*/
public function scandir( $abs_path ) {
$dirlist = @scandir( $abs_path );
if ( false === $dirlist ) {
if ( $this->use_filesystem ) {
$abs_path = $this->get_sanitized_path( $abs_path );
return $this->wp_filesystem->dirlist( $abs_path, true, false );
}
return false;
}
$return = array();
// normalize return to look somewhat like the return value for WP_Filesystem::dirlist
foreach ( $dirlist as $entry ) {
if ( '.' === $entry || '..' === $entry ) {
continue;
}
$return[ $entry ] = array(
'name' => $entry,
'type' => $this->is_dir( $abs_path . '/' . $entry ) ? 'd' : 'f',
);
}
return $return;
}
/**
* Light wrapper for move_uploaded_file with chmod
*
* @param string $file
* @param string $destination
* @param int $perms
*
* @return bool
*
* TODO: look into replicating more functionality from wp_handle_upload()
*/
public function move_uploaded_file( $file, $destination, $perms = null ) {
$return = @move_uploaded_file( $file, $destination );
if ( $return ) {
$this->chmod( $destination, $perms );
}
return $return;
}
/**
* Copy a file
*
* @param string $source_abs_path
* @param string $destination_abs_path
* @param bool $overwrite
* @param mixed $perms
*
* @return bool
*
* Taken from WP_Filesystem_Direct
*/
public function copy( $source_abs_path, $destination_abs_path, $overwrite = true, $perms = false ) {
// error if source file doesn't exist
if ( ! $this->file_exists( $source_abs_path ) ) {
return false;
}
if ( ! $overwrite && $this->file_exists( $destination_abs_path ) ) {
return false;
}
$return = @copy( $source_abs_path, $destination_abs_path );
if ( $perms && $return ) {
$this->chmod( $destination_abs_path, $perms );
}
if ( ! $return && $this->use_filesystem ) {
$source_abs_path = $this->get_sanitized_path( $source_abs_path );
$destination_abs_path = $this->get_sanitized_path( $destination_abs_path );
$return = $this->wp_filesystem->copy( $source_abs_path, $destination_abs_path, $overwrite, $perms );
}
return $return;
}
/**
* Move a file
*
* @param string $source_abs_path
* @param string $destination_abs_path
* @param bool $overwrite
*
* @return bool
*/
public function move( $source_abs_path, $destination_abs_path, $overwrite = true ) {
// error if source file doesn't exist
if ( ! $this->file_exists( $source_abs_path ) ) {
return false;
}
// Try using rename first. if that fails (for example, source is read only) try copy.
// Taken in part from WP_Filesystem_Direct
if ( ! $overwrite && $this->file_exists( $destination_abs_path ) ) {
return false;
} elseif ( @rename( $source_abs_path, $destination_abs_path ) ) {
return true;
} else {
if ( $this->copy( $source_abs_path, $destination_abs_path, $overwrite ) && $this->file_exists( $destination_abs_path ) ) {
$this->unlink( $source_abs_path );
return true;
} else {
$return = false;
}
}
if ( ! $return && $this->use_filesystem ) {
$source_abs_path = $this->get_sanitized_path( $source_abs_path );
$destination_abs_path = $this->get_sanitized_path( $destination_abs_path );
$return = $this->wp_filesystem->move( $source_abs_path, $destination_abs_path, $overwrite );
}
return $return;
}
}
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