Gazelle/classes/ajax_start.php

<?
require 'config.php'; //The config contains all site wide configuration information as well as memcached rules
require(SERVER_ROOT.'/classes/class_debug.php');
require(SERVER_ROOT.'/classes/class_cache.php'); //Require the caching class
require(SERVER_ROOT.'/classes/class_encrypt.php'); //Require the caching class

$Debug = new DEBUG;
$Cache = NEW CACHE; //Load the caching class
$Enc = NEW CRYPT; //Load the encryption class

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

if (isset($_COOKIE['session'])) { $LoginCookie=$Enc->decrypt($_COOKIE['session']); }
if(isset($LoginCookie)) {
	list($SessionID, $UserID)=explode("|~|",$Enc->decrypt($LoginCookie));
	
	if(!$UserID || !$SessionID) {
		die('Not logged in!');
	}
	
	if(!$Enabled = $Cache->get_value('enabled_'.$UserID)){
		require(SERVER_ROOT.'/classes/class_mysql.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 = array(
			"'",'"',"<",">",
			'&#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=array(
			'&#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, $DontEscape = array()) {
	foreach ($Array as $Key => $Val) {
		if(!in_array($Key, $DontEscape)) {
			$Array[$Key] = display_str($Val);
		}
	}
	return $Array;
}

function make_secret($Length = 32) {
	$Secret = '';
	$Chars='abcdefghijklmnopqrstuvwxyz0123456789';
	for($i=0; $i<$Length; $i++) {
		$Rand = mt_rand(0, strlen($Chars)-1);
		$Secret .= substr($Chars, $Rand, 1);
	}
	return str_shuffle($Secret);
}

// Send a message to an IRC bot listening on SOCKET_LISTEN_PORT
function send_irc($Raw) {
	$IRCSocket = fsockopen(SOCKET_LISTEN_ADDRESS, SOCKET_LISTEN_PORT);
	$Raw = str_replace(array("\n", "\r"), '', $Raw);
	fwrite($IRCSocket, $Raw);
	fclose($IRCSocket);
}