ops-Gazelle/classes/ajax_start.php

<?php
use Gazelle\Util\{Crypto, Irc};

require_once(__DIR__.'/config.php');
require_once(__DIR__.'/classloader.php');

$Debug = new DEBUG;
$Cache = new CACHE($MemcachedServers);

$SSL = $_SERVER['SERVER_PORT'] === '443';

if (isset($_COOKIE['session'])) {
    $LoginCookie = Crypto::decrypt($_COOKIE['session'], ENCKEY);
}
if (isset($LoginCookie)) {
    list($SessionID, $UserID) = explode("|~|", Crypto::decrypt($LoginCookie, ENCKEY));

    if (!$UserID || !$SessionID) {
        die('Not logged in!');
    }

    if (!$Enabled = $Cache->get_value("enabled_$UserID")) {
        require(SERVER_ROOT.'/classes/mysql.class.php'); //Require the database wrapper
        $DB = new DB_MYSQL; //Load the database wrapper
        $DB->query("
            SELECT Enabled
            FROM users_main
            WHERE ID = '$UserID'");
        list($Enabled) = $DB->next_record();
        $Cache->cache_value("enabled_$UserID", $Enabled, 0);
    }
} else {
    die('Not logged in!');
}

function error($Error) {
    die($Error);
}

function is_number($Str) {
    if ($Str < 0) {
        return false;
    }
    // We're converting input to a int, then string and comparing to original
    return ($Str == strval(intval($Str)) ? true : false);
}

function display_str($Str) {
    if ($Str != '') {
        $Str = make_utf8($Str);
        $Str = mb_convert_encoding($Str, 'HTML-ENTITIES', 'UTF-8');
        $Str = preg_replace("/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,5};)/m", '&amp;', $Str);

        $Replace = [
            "'",'"',"<",">",
            '&#128;','&#130;','&#131;','&#132;','&#133;','&#134;','&#135;','&#136;','&#137;','&#138;','&#139;','&#140;','&#142;','&#145;','&#146;','&#147;','&#148;','&#149;','&#150;','&#151;','&#152;','&#153;','&#154;','&#155;','&#156;','&#158;','&#159;'
        ];

        $With = [
            '&#39;','&quot;','&lt;','&gt;',
            '&#8364;','&#8218;','&#402;','&#8222;','&#8230;','&#8224;','&#8225;','&#710;','&#8240;','&#352;','&#8249;','&#338;','&#381;','&#8216;','&#8217;','&#8220;','&#8221;','&#8226;','&#8211;','&#8212;','&#732;','&#8482;','&#353;','&#8250;','&#339;','&#382;','&#376;'
        ];

        $Str = str_replace($Replace, $With, $Str);
    }
    return $Str;
}

function make_utf8($Str) {
    if ($Str != '') {
        if (is_utf8($Str)) {
            $Encoding = 'UTF-8';
        }
        if (empty($Encoding)) {
            $Encoding = mb_detect_encoding($Str, 'UTF-8, ISO-8859-1');
        }
        if (empty($Encoding)) {
            $Encoding = 'ISO-8859-1';
        }
        if ($Encoding == 'UTF-8') {
            return $Str;
        } else {
            return @mb_convert_encoding($Str, 'UTF-8', $Encoding);
        }
    }
}

function is_utf8($Str) {
    return preg_match('%^(?:
        [\x09\x0A\x0D\x20-\x7E]             // ASCII
        | [\xC2-\xDF][\x80-\xBF]            // non-overlong 2-byte
        | \xE0[\xA0-\xBF][\x80-\xBF]        // excluding overlongs
        | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} // straight 3-byte
        | \xED[\x80-\x9F][\x80-\xBF]        // excluding surrogates
        | \xF0[\x90-\xBF][\x80-\xBF]{2}     // planes 1-3
        | [\xF1-\xF3][\x80-\xBF]{3}         // planes 4-15
        | \xF4[\x80-\x8F][\x80-\xBF]{2}     // plane 16
        )*$%xs', $Str
    );
}

function display_array($Array, $DontEscape = []) {
    foreach ($Array as $Key => $Val) {
        if (!in_array($Key, $DontEscape)) {
            $Array[$Key] = display_str($Val);
        }
    }
    return $Array;
}

function make_secret($Length = 32) {
    $NumBytes = (int) round($Length / 2);
    $Secret = bin2hex(openssl_random_pseudo_bytes($NumBytes));
    return substr($Secret, 0, $Length);
}

// Send a message to an IRC bot listening on SOCKET_LISTEN_PORT
function send_irc($Raw) {
    \Gazelle\Util\Irc::sendRaw($Raw);
}