<?php
/**
*
* @ This file is created by http://DeZender.Net
* @ deZender (PHP7 Decoder for ionCube Encoder)
*
* @ Version			:	4.0.8.2
* @ Author			:	DeZender
* @ Release on		:	02.01.2019
* @ Official site	:	http://DeZender.Net
*
*/

class AntiFlood
{
	const OPTION_COUNTER_RESET_SECONDS = 'COUNTER_RESET_SECONDS';
	const OPTION_BAN_REMOVE_SECONDS = 'BAN_REMOVE_SECONDS';
	const OPTION_MAX_REQUESTS = 'MAX_REQUESTS';
	const OPTION_DATA_PATH = 'DATA_PATH';

	private $options;
	private $ip;

	public function __construct($overrideOptions = [])
	{
		$this->options = array_merge(['COUNTER_RESET_SECONDS' => 2, 'MAX_REQUESTS' => 5, 'BAN_REMOVE_SECONDS' => 60, 'DATA_PATH' => '/tmp/antiflood_' . str_replace(['www.', '.'], ['', '_'], $_SERVER['SERVER_NAME'])], $overrideOptions);
		@mkdir($this->options['DATA_PATH']);
		$this->ip = $_SERVER['REMOTE_ADDR'];
	}

	public function isBanned()
	{
		$controlLockFile = $this->options['DATA_PATH'] . '/' . str_replace('.', '_', $this->ip);

		if (file_exists($controlLockFile)) {
			if ($this->options['BAN_REMOVE_SECONDS'] < (time() - filemtime($controlLockFile))) {
				unlink($controlLockFile);
			}
			else {
				touch($controlLockFile);
				return true;
			}
		}

		$controlFile = $this->options['DATA_PATH'] . '/ctrl';
		$control = [];

		if (file_exists($controlFile)) {
			$fh = fopen($controlFile, 'r');
			$fileContentsArr = (0 < filesize($controlFile) ? json_decode(fread($fh, filesize($controlFile)), true) : []);
			$control = array_merge($control, $fileContentsArr);
			fclose($fh);
		}

		if (isset($control[$this->ip])) {
			if ((time() - $control[$this->ip]['t']) < $this->options['COUNTER_RESET_SECONDS']) {
				$control[$this->ip]['c']++;
			}
			else {
				$control[$this->ip]['c'] = 1;
			}
		}
		else {
			$control[$this->ip]['c'] = 1;
		}

		$control[$this->ip]['t'] = time();

		if ($this->options['MAX_REQUESTS'] < $control[$this->ip]['c']) {
			$fh = fopen($controlLockFile, 'w');
			fwrite($fh, '');
			fclose($fh);
		}

		$fh = fopen($controlFile, 'w');
		fwrite($fh, json_encode($control));
		fclose($fh);
		return false;
	}
}

class Signatures
{
	static public function generateSignature($data)
	{
		return hash_hmac('sha256', $data, Constants::IG_SIG_KEY);
	}

	static public function signData($data, $exclude = [])
	{
		$result = [];

		foreach ($exclude as $key) {
			if (isset($data[$key])) {
				$result[$key] = $data[$key];
				unset($data[$key]);
			}
		}

		foreach ($data as &$value) {
			if (is_scalar($value)) {
				$value = (string) $value;
			}
		}

		unset($value);
		$data = json_encode((object) Utils::reorderByHashCode($data));
		$result['ig_sig_key_version'] = Constants::SIG_KEY_VERSION;
		$result['signed_body'] = self::generateSignature($data) . '.' . $data;
		return Utils::reorderByHashCode($result);
	}

	static public function generateDeviceId()
	{
		$megaRandomHash = md5(number_format(microtime(true), 7, '', ''));
		return 'android-' . substr($megaRandomHash, 16);
	}

	static public function generateUUID($keepDashes = true)
	{
		$uuid = sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x', mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 4095) | 16384, mt_rand(0, 16383) | 32768, mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535));
		return $keepDashes ? $uuid : str_replace('-', '', $uuid);
	}
}

class Utils
{
	const BOUNDARY_CHARS = '-_1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
	const BOUNDARY_LENGTH = 30;

	static protected $_lastUploadId;

	static public function generateMultipartBoundary()
	{
		$result = '';
		$max = strlen('-_1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ') - 1;

		for ($i = 0; $i < 30; ++$i) {
			$result .= '-_1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'[mt_rand(0, $max)];
		}

		return $result;
	}

	static public function hashCode($string)
	{
		$result = 0;
		$len = strlen($string);

		for ($i = 0; $i < $len; ++$i) {
			$result = ((-1 * $result) + ($result << 5) + ord($string[$i])) & 4294967295.0;
		}

		if (4 < PHP_INT_SIZE) {
			if (2147483647 < $result) {
				$result -= 4294967296.0;
			}
			else if ($result < -2147483648.0) {
				$result += 4294967296.0;
			}
		}

		return $result;
	}

	static public function reorderByHashCode($data)
	{
		$hashCodes = [];

		foreach ($data as $key => $value) {
			$hashCodes[$key] = self::hashCode($key);
		}

		uksort($data, function($a, $b) use($hashCodes) {
			$a = $hashCodes[$a];
			$b = $hashCodes[$b];

			if ($a < $b) {
				return -1;
			}
			else if ($b < $a) {
				return 1;
			}
			else {
				return 0;
			}
		});
		return $data;
	}

	static public function generateUploadId($useNano = false)
	{
		$result = NULL;

		if (!$useNano) {
			while (true) {
				$result = number_format(round(microtime(true) * 1000), 0, '', '');
				if ((self::$_lastUploadId !== NULL) && ($result === self::$_lastUploadId)) {
					usleep(1000);
					continue;
				}

				self::$_lastUploadId = $result;
				break;
			}
		}
		else {
			$result = number_format(microtime(true) - strtotime('Last Monday'), 6, '', '');
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