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index.php
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index.php
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<?php
use cvweiss\redistools\RedisSessionHandler;
use cvweiss\redistools\RedisTtlCounter;
$pageLoadMS = microtime(true);
$uri = @$_SERVER['REQUEST_URI'];
$isApiRequest = substr($uri, 0, 5) == "/api/";
if ($uri == "/kill/-1/") {
header("Location: /keepstar1.html");
exit();
}
// Some killboards and bots are idiots
if (strpos($uri, "_detail") !== false) {
header('HTTP/1.1 404 This is not an EDK killboard.');
exit();
}
// Check to ensure we have a trailing slash, helps with caching
if (substr($uri, -1) != '/' && strpos($uri, 'ccpcallback') === false && strpos($uri, 'patreon') === false && strpos($uri, 'brsave') === false && strpos($uri, "ccp") === false && strpos($uri, "related/") === false) {
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET');
// Is there q question mark in the URL? cut it off, doesn't belong
if (strpos($uri, '?') !== false) {
/* Facebook and other media sites like to add tracking to the URL... remove it */
$s = explode('?', $uri);
$uri = $s[0];
header("Location: $uri", true, 302);
exit();
}
if ($isApiRequest) header("HTTP/1.1 200 Missing trailing slash");
else header("Location: $uri/", true, 302);
exit();
}
// http requests should already be prevented, but use this just in case
// also prevents sessions from being created without ssl
if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] != 'https') {
header("Location: https://zkillboard.com$uri");
die();
}
// Include Init
require_once 'init.php';
$ip = IP::get();
$agent = @$_SERVER['HTTP_USER_AGENT'];
if ($redis->get("zkb:memused") > 115) {
header('HTTP/1.1 202 API temporarily disabled because of resource limitations');
exit();
}
$timer = new Timer();
// Starting Slim Framework
$app = new \Slim\Slim($config);
$ipE = explode(',', $ip);
$ip = $ipE[0];
if (false && $redis->get("IP:ban:$ip") == "true") {
header("Location: /html/banned.html", true, 302);
return;
}
if (in_array($ip, $blackList)) {
header('HTTP/1.1 403 Blacklisted');
die();
}
header('X-Frame-Options: DENY');
header("Content-Security-Policy: frame-ancestors 'none'");
$limit = 10;
if (substr($uri, 0, 5) == "/api/") $limit = 1;
$noLimits = ['/cache/', '/post/', '/autocomplete/', '/crestmail/', '/comment/', '/killlistrow/', '/comment/', '/related/', '/sponsor', '/crestmail', '/account/', '/logout', '/ccp', '/auto', '/killlistrow/', '/challenge/', '/api/prices/'];
$noLimit = false;
foreach ($noLimits as $noLimitTxt) $noLimit |= (substr($uri, 0, strlen($noLimitTxt)) === $noLimitTxt);
$rateLimitKey = "ratelimit:" . $ip . ":" . time();
$sem = sem_get(3173);
sem_acquire($sem);
$count = (int) $redis->get($rateLimitKey);
//$nlt = ($noLimit ? "no limit" : "limited");
//if ($ip == "2a01:7e00::f03c:91ff:fe28:f395") Log::log($rateLimitKey . " ($nlt) $count $limit");
if ($noLimit == false && $count >= $limit) {
//Log::log("$ip $uri $count>=$limit Rate limited $agent");
header('HTTP/1.1 429 Too many requests.');
sem_release($sem);
die("<html><head><meta http-equiv='refresh' content='1'></head><body>Rate limited - because of abuse all IPs are restricted to 1 request per second now. I don't care if it wasn't you - I won't make any exceptions.</body></html>");
} else if ($noLimit !== false) {
$redis->incr($rateLimitKey, 1);
$redis->expire($rateLimitKey, 1);
}
sem_release($sem);
// Scrape Checker
$ipKey = "ip::$ip";
if (false && $redis->get("ip::redirect::$ip") != null) {
$redis->incr("ip::redirect::$ip:challenges");
$redis->expire("ip::redirect::$ip:challenges", 3600);
if ($redis->get("ip::redirect::$ip:challenges") > 10) {
header("Location: /html/banned.html", true, 302);
Log::log("Banning $ip for failing to pass challenges. User Agent: " . @$_SERVER['HTTP_USER_AGENT']);
$redis->setex("IP:ban:$ip", 9600, "true");
return;
}
header("Location: /challenge/", true, 302);
return;
}
if (false && !$isApiRequest && !$noLimit && $redis->get("ip::challenge_safe::$ip") != "true") {
$redis->incr($ipKey, ($uri == '/navbar/' ? -1 : 1));
$redis->expire($ipKey, 300);
$count = $redis->get($ipKey);
if (!in_array($ip, $whiteList) && $count > 40) {
$host = gethostbyaddr($ip);
$host2 = gethostbyname($host);
$isValidBot = false;
foreach ($validBots as $bot) {
$isValidBot |= strpos($host, $bot) !== false;
}
if ($ip != $host2 || !$isValidBot) {
if ($redis->get("ip::redirect::$ip") == false) Log::log("Challenging $ip $host $uri");
$redis->setex("ip::redirect::$ip", 9600, $uri);
header("Location: /challenge/", true, 302);
return;
}
}
}
setcookie(session_name(), session_id(), time() + $cookie_time, '/', '.zkillboard.com', true, true);
$request = $isApiRequest ? new RedisTtlCounter('ttlc:apiRequests', 300) : new RedisTtlCounter('ttlc:nonApiRequests', 300);
if ($isApiRequest || $uri == '/navbar/') $request->add(uniqid());
$uvisitors = new RedisTtlCounter('ttlc:unique_visitors', 300);
if ($uri == '/navbar/') $uvisitors->add($ip);
$visitors = new RedisTtlCounter('ttlc:visitors', 300);
$visitors->add($ip);
$requests = new RedisTtlCounter('ttlc:requests', 300);
$requests->add(uniqid());
// Theme
$theme = UserConfig::get('theme', 'cyborg');
$app->config(array('templates.path' => $baseDir.'templates/'));
// Error handling
$app->error(function (\Exception $e) use ($app) { include 'view/error.php'; });
// Load the routes - always keep at the bottom of the require list ;)
include 'routes.php';
// Load twig stuff
include 'twig.php';
include 'analyticsLoad.php';
// Run the thing!
$app->run();