wfUtils.php — Wordfence Security – Firewall, Malware Scan, and Login Security 1.4.2

wordfence / lib / wfUtils.php

wordfence / lib Last commit date

wfUtils.php

150 lines

1	<?php
2	class wfUtils {
3	private static $reverseLookupCache = array();
4	public static function makeTimeAgo($secs, $noSeconds = false) {
5	if($secs < 1){
6	return "a moment";
7	}
8	$months = floor($secs / (86400 * 30));
9	$days = floor($secs / 86400);
10	$hours = floor($secs / 3600);
11	$minutes = floor($secs / 60);
12	if($months) {
13	$days -= $months * 30;
14	return self::pluralize($months, 'month', $days, 'day');
15	} else if($days) {
16	$hours -= $days * 24;
17	return self::pluralize($days, 'day', $hours, 'hour');
18	} else if($hours) {
19	$minutes -= $hours * 60;
20	return self::pluralize($hours, 'hour', $minutes, 'min');
21	} else if($minutes) {
22	$secs -= $minutes * 60;
23	return self::pluralize($minutes, 'min');
24	} else {
25	if($noSeconds){
26	return "less than a minute";
27	} else {
28	return floor($secs) . " secs";
29	}
30	}
31	}
32	public static function pluralize($m1, $t1, $m2 = false, $t2 = false) {
33	if($m1 != 1) {
34	$t1 = $t1 . 's';
35	}
36	if($m2 != 1) {
37	$t2 = $t2 . 's';
38	}
39	if($m1 && $m2){
40	return "$m1 $t1 $m2 $t2";
41	} else {
42	return "$m1 $t1";
43	}
44	}
45	public static function formatBytes($bytes, $precision = 2) {
46	$units = array('B', 'KB', 'MB', 'GB', 'TB');
47
48	$bytes = max($bytes, 0);
49	$pow = floor(($bytes ? log($bytes) : 0) / log(1024));
50	$pow = min($pow, count($units) - 1);
51
52	// Uncomment one of the following alternatives
53	$bytes /= pow(1024, $pow);
54	// $bytes /= (1 << (10 * $pow));
55
56	return round($bytes, $precision) . ' ' . $units[$pow];
57	}
58	public static function inet_ntoa($ip){
59	$long = 4294967295 - ($ip - 1);
60	return long2ip(-$long);
61	}
62	public static function inet_aton($ip){
63	return sprintf("%u", ip2long($ip));
64	}
65	public static function getBaseURL(){
66	return plugins_url() . '/wordfence/';
67	}
68	public static function getPluginBaseDir(){
69	return ABSPATH . 'wp-content/plugins/';
70	}
71	public static function getIP(){
72	$ip = 0;
73	if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])){
74	$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
75	}
76	if((! $ip) && isset($_SERVER['REMOTE_ADDR'])){
77	$ip = $_SERVER['REMOTE_ADDR'];
78	}
79	return $ip;
80	}
81	public static function getRequestedURL(){
82	return ($_SERVER['HTTPS'] ? 'https' : 'http') . '://' . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
83	}
84	public static function reverseLookup($IP){
85	if(! isset(self::$reverseLookupCache[$IP])){
86	$ptr = implode(".", array_reverse(explode(".",$IP))) . ".in-addr.arpa";
87	$host = dns_get_record($ptr, DNS_PTR);
88	if($host == null){
89	self::$reverseLookupCache[$IP] = '';
90	} else {
91	self::$reverseLookupCache[$IP] = $host[0]['target'];
92	}
93	}
94	return self::$reverseLookupCache[$IP];
95	}
96	public static function editUserLink($userID){
97	return get_admin_url() . 'user-edit.php?user_id=' . $userID;
98	}
99	public static function wdie($err){
100	$trace=debug_backtrace(); $caller=array_shift($trace);
101	error_log("Wordfence error in " . $caller['file'] . " line " . $caller['line'] . ": $err");
102	exit();
103	}
104	public static function tmpl($file, $data){
105	extract($data);
106	ob_start();
107	include $file;
108	return ob_get_contents() . (ob_end_clean() ? "" : "");
109	}
110	public static function bigRandomHex(){
111	return dechex(rand(0, 2147483647)) . dechex(rand(0, 2147483647)) . dechex(rand(0, 2147483647));
112	}
113	public static function encrypt($str){
114	$key = wfConfig::get('encKey');
115	if(! $key){
116	error_log("Wordfence error: No encryption key found!");
117	exit();
118	}
119	$db = new wfDB();
120	return $db->querySingle("select HEX(AES_ENCRYPT('%s', '%s')) as val", $str, $key);
121	}
122	public static function decrypt($str){
123	$key = wfConfig::get('encKey');
124	if(! $key){
125	error_log("Wordfence error: No encryption key found!");
126	exit();
127	}
128	$db = new wfDB();
129	return $db->querySingle("select AES_DECRYPT(UNHEX('%s'), '%s') as val", $str, $key);
130	}
131	public static function logCaller(){
132	$trace=debug_backtrace();
133	$caller=array_shift($trace);
134	$c2 = array_shift($trace);
135	error_log("Caller for " . $caller['file'] . " line " . $caller['line'] . " is " . $c2['file'] . ' line ' . $c2['line']);
136	}
137	public static function getWPVersion(){
138	global $wp_version;
139	global $wordfence_wp_version;
140	if(isset($wordfence_wp_version)){
141	return $wordfence_wp_version;
142	} else {
143	return $wp_version;
144	}
145	}
146	}
147
148
149	?>
150