defender-security / src / helper / class-file.php

class-file.php in Defender Security – Malware Scanner, Login Security & Firewall 5.4.0, at src/helper/class-file.php

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1	<?php
2	/**
3	* File related helper utilities.
4	*
5	* @package WP_Defender\Helper
6	*/
7
8	namespace WP_Defender\Helper;
9
10	use WP_Error;
11
12	/**
13	* Handles file related tasks.
14	*/
15	class File {
16
17	/**
18	* Check is two files identical.
19	*
20	* @param string $local_file File path of the local file for content comparison.
21	* @param string $remote_file Url of the remote file for content comparison.
22	*
23	* @return bool\|string\|WP_Error If remote fetch fails return WP_Error object or
24	* true for identical file content or false for non-identical file content.
25	*/
26	public function is_identical_content( string $local_file, string $remote_file ) {
27	wp_raise_memory_limit();
28
29	$local_file_content = file( $local_file, FILE_IGNORE_NEW_LINES );
30
31	$tmp = download_url( $remote_file );
32
33	if ( is_wp_error( $tmp ) ) {
34	return $tmp;
35	}
36
37	$remote_file_content = file( $tmp, FILE_IGNORE_NEW_LINES );
38
39	wp_delete_file( $tmp );
40
41	return $local_file_content === $remote_file_content;
42	}
43
44	/**
45	* Deny access for the provided directory.
46	*
47	* @param string $directory File path to the directory.
48	*
49	* @since 4.2.0
50	*/
51	public function maybe_dir_access_deny( string $directory ) {
52	global $wp_filesystem;
53	// Initialize the WP filesystem, no more using 'file-put-contents' function.
54	if ( empty( $wp_filesystem ) ) {
55	require_once ABSPATH . '/wp-admin/includes/file.php';
56	WP_Filesystem();
57	}
58	$files = array(
59	array(
60	'base' => $directory,
61	'file' => '.htaccess',
62	'content' => 'deny from all',
63	),
64	array(
65	'base' => $directory,
66	'file' => 'index.html',
67	'content' => '',
68	),
69	);
70
71	foreach ( $files as $file ) {
72	$file_path = trailingslashit( $file['base'] ) . $file['file'];
73	if ( ! is_null( $file_path ) && ! file_exists( $file_path ) ) {
74	$wp_filesystem->put_contents( $file_path, $file['content'] );
75	}
76	}
77	}
78	}
79