File "class-file-system.php"
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MIME-type: text/x-php
Charset: utf-8
<?php
namespace Smush\Core;
class File_System {
public function file_get_contents( $path, $use_include_path = false, $context = null, $offset = 0, $length = null ) {
if ( ! $this->is_valid_path( $path ) ) {
return false;
}
if ( str_starts_with( $path, ABSPATH ) && ! file_exists( $path ) ) {
return false;
}
$args = array( $path, $use_include_path, $context, $offset );
if ( ! is_null( $length ) ) {
// Even though the default value of $length is 'null', an empty string is returned when 'null' is passed as $length. So, we only include it when a non-null value is provided.
$args[] = $length;
}
return call_user_func_array( 'file_get_contents', $args );
}
public function file_exists( $path ) {
return $this->validate_and_call( 'file_exists', $path );
}
public function unlink( $path ) {
return $this->validate_and_call( 'unlink', $path );
}
public function copy( $source, $destination ) {
return $this->validate_and_call( 'copy', $source, $destination );
}
public function is_file( $file ) {
return $this->validate_and_call( 'is_file', $file );
}
public function is_dir( $path ) {
return $this->validate_and_call( 'is_dir', $path );
}
public function filesize( $file ) {
return $this->validate_and_call( 'filesize', $file );
}
public function getimagesize( $path ) {
return $this->validate_and_call( 'getimagesize', $path );
}
private function validate_and_call( $callback, ...$args ) {
foreach ( $args as $arg ) {
if ( ! $this->is_valid_path( $arg ) ) {
return false;
}
}
return call_user_func_array( $callback, $args );
}
private function is_valid_path( $path ) {
return false === stripos( $path, 'phar://' );
}
public function get_wp_filesystem() {
global $wp_filesystem;
if ( is_null( $wp_filesystem ) ) {
// These aren't included when applying a config from the Hub.
if ( ! function_exists( 'WP_Filesystem' ) ) {
require_once ABSPATH . 'wp-admin/includes/file.php';
}
WP_Filesystem();
}
return $wp_filesystem;
}
}