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<?php

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if (!defined('ABSPATH') && !defined('MCDATAPATH')) exit;

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if (!class_exists('BVProtectUtils_V565')) :

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class BVProtectUtils_V565 {

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public static function getIP($ip_header) {

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$ip = null;

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if (is_array($ip_header)) {

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if ((array_key_exists('hdr', $ip_header) && is_string($ip_header['hdr'])) &&

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(array_key_exists('pos', $ip_header) && is_int($ip_header['pos']))) {

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if (array_key_exists($ip_header['hdr'], $_SERVER) && is_string($_SERVER[$ip_header['hdr']])) {

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$_ips = preg_split("/(,| |\t)/", $_SERVER[$ip_header['hdr']]);

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if (array_key_exists($ip_header['pos'], $_ips)) {

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$ip = $_ips[$ip_header['pos']];

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}

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}

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}

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} elseif (array_key_exists('REMOTE_ADDR', $_SERVER)) {

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$ip = $_SERVER['REMOTE_ADDR'];

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}

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if (is_string($ip)) {

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$ip = trim($ip);

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if (BVHelper::safePregMatch('/^\[([0-9a-fA-F:]+)\](:[0-9]+)$/', $ip, $matches)) {

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$ip = $matches[1];

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} elseif (BVHelper::safePregMatch('/^([0-9.]+)(:[0-9]+)$/', $ip, $matches)) {

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$ip = $matches[1];

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}

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}

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return self::isValidIP($ip) ? $ip : '127.0.0.1';

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}

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public static function isIPv6($ip) {

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return (false === filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) ? false : true;

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}

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public static function hasIPv6Support() {

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return defined('AF_INET6');

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}

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public static function isValidIP($ip) {

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return filter_var($ip, FILTER_VALIDATE_IP) !== false;

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}

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public static function bvInetPton($ip) {

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$pton = self::isValidIP($ip) ? (self::hasIPv6Support() ? inet_pton($ip) : self::_bvInetPton($ip)) : false;

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return $pton;

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}

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public static function _bvInetPton($ip) {

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if (BVHelper::safePregMatch('/^(?:\d{1,3}(?:\.|$)){4}/', $ip)) {

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$octets = explode('.', $ip);

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$bin = chr($octets[0]) . chr($octets[1]) . chr($octets[2]) . chr($octets[3]);

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return $bin;

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}

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if (BVHelper::safePregMatch('/^((?:[\da-f]{1,4}(?::|)){0,8})(::)?((?:[\da-f]{1,4}(?::|)){0,8})$/i', $ip)) {

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if ($ip === '::') {

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return "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";

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}

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$colon_count = substr_count($ip, ':');

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$dbl_colon_pos = strpos($ip, '::');

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if ($dbl_colon_pos !== false) {

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$ip = str_replace('::', str_repeat(':0000',

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(($dbl_colon_pos === 0 || $dbl_colon_pos === strlen($ip) - 2) ? 9 : 8) - $colon_count) . ':', $ip);

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$ip = trim($ip, ':');

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}

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$ip_groups = explode(':', $ip);

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$ipv6_bin = '';

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foreach ($ip_groups as $ip_group) {

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$ipv6_bin .= pack('H*', str_pad($ip_group, 4, '0', STR_PAD_LEFT));

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}

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return strlen($ipv6_bin) === 16 ? $ipv6_bin : false;

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}

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if (BVHelper::safePregMatch('/^(?:\:(?:\:0{1,4}){0,4}\:|(?:0{1,4}\:){5})ffff\:(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$/i', $ip, $matches)) {

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$octets = explode('.', $matches[1]);

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return chr($octets[0]) . chr($octets[1]) . chr($octets[2]) . chr($octets[3]);

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}

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return false;

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}

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public static function isIPInRange($start_ip_range, $end_ip_range, $ip) {

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$bin_ip = null;

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if ($ip) {

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$bin_ip = self::bvInetPton($ip);

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}

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if ($bin_ip && $bin_ip >= self::bvInetPton($start_ip_range)

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&& $bin_ip <= self::bvInetPton($end_ip_range)) {

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return true;

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}

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return false;

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}

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public static function isPrivateIP($ip) {

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$private_ip_ranges = array(

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array("10.0.0.0", "10.255.255.255"),

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array("172.16.0.0", "172.31.255.255"),

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array("192.168.0.0", "192.168.255.255"),

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array("127.0.0.1", "127.255.255.255"),

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array("::1","::1"),

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array("fc00::","fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")

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);

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$result = false;

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foreach ($private_ip_ranges as $ip_range) {

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$result = self::isIPInRange($ip_range[0], $ip_range[1], $ip);

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if($result) {

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return $result;

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}

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}

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return $result;

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}

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public static function rrmdir($dir) {

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if (is_dir($dir)) {

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$objects = scandir($dir);

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foreach ($objects as $object) {

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if ($object != "." && $object != "..") {

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if (is_dir($dir . "/" . $object) && !is_link($dir . "/" . $object)) {

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BVProtectUtils_V565::rrmdir($dir . "/" . $object);

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} else {

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unlink($dir . "/" . $object);

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}

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}

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}

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rmdir($dir);

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}

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}

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public static function getLength($val) {

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$length = 0;

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if (is_array($val)) {

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foreach ($val as $e) {

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$length += BVProtectUtils_V565::getLength($e);

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}

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return $length;

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} else {

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return strlen((string) $val);

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}

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}

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public static function parseFile($fname) {

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$result = array();

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if (file_exists($fname)) {

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$content = file_get_contents($fname);

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if (($content !== false) && is_string($content)) {

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$result = json_decode($content, true);

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if (!is_array($result)) {

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$result = array();

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}

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}

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}

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return $result;

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}

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public static function fileRemovePattern($fname, $pattern, $regex_pattern = false) {

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if (!file_exists($fname)) return;

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$content = file_get_contents($fname);

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if ($content) {

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if ($regex_pattern) {

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$modified_content = preg_replace($pattern, "", $content);

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} else {

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$modified_content = str_replace($pattern, "", $content);

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}

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if ($content !== $modified_content) {

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file_put_contents($fname, $modified_content);

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}

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}

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}

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public static function havePluginsLoaded() {

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return (function_exists('did_action') && (did_action('plugins_loaded') > 0));

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}

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public static function haveMupluginsLoaded() {

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return (function_exists('did_action') && (did_action('muplugins_loaded') > 0));

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}

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public static function isWPVersionCompatible($required) {

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global $wp_version;

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// Strip off any -alpha, -RC, -beta, -src suffixes.

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list( $version ) = explode( '-', $wp_version );

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return empty( $required ) || version_compare( $version, $required, '>=' );

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}

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public static function preInitWPHook($hook_name, $function_name, $priority, $accepted_args) {

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global $wp_filter;

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// Check if $wp_filter is not initialized or not an array

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if (!isset($wp_filter) || !is_array($wp_filter)) {

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$wp_filter = array();

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}

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// Check if the hook exists in $wp_filter

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if (!isset($wp_filter[$hook_name])) {

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$wp_filter[$hook_name] = array();

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}

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// Check if the priority exists for the hook

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if (!isset($wp_filter[$hook_name][$priority])) {

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$wp_filter[$hook_name][$priority] = array();

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}

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// Add the filter function information to the $wp_filter array

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$wp_filter[$hook_name][$priority][] = array(

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'function' => $function_name,

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'accepted_args' => $accepted_args,

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);

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}

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public static function signMessage($message, $key, $algorithm = 'sha256') {

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if (!is_string($message) || !is_string($key)) {

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return false;

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}

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return hash_hmac($algorithm, $message, $key);

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}

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public static function verifyMessage($message, $signature, $key, $algorithm = 'sha256') {

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if (!is_string($message) || !is_string($signature) || !is_string($key)) {

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return false;

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}

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$calc_signature = self::signMessage($message, $key, $algorithm);

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return hash_equals($calc_signature, $signature);

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}

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public static function safeDecodeJSON($str, $associative = true, $depth = 512) {

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$decoded_data = @json_decode($str, $associative, $depth);

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if (isset($decoded_data)) {

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return $decoded_data;

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}

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}

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}

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endif;

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