json-api/shared/ratelimits.php

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953 B
PHP
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2019-09-14 17:38:35 +02:00
<?php
function checkIfUserIsRateLimited($resource, $timeLimit = 10, $currentResLimit = 1) {
$clientIP = $_SERVER['REMOTE_ADDR'];
$ipHash = hash('sha256', "ratelimits-$clientIP");
$info = @file_get_contents('cache/'.$ipHash.'.json');
$info = json_decode($info, 1);
if(!isset($info['resource'])) {
$info['resource'] = $resource;
}
if(!isset($info['lastAccess'])) {
$info['lastAccess'] = 0;
}
$lastAccess = $info['lastAccess'];
$accessedRes = $info['resource'];
$blockAccessTime = $lastAccess + $timeLimit;
if($blockAccessTime > microtime(1) && $accessedRes != $resource) {
return true;
}
$info['lastAccess'] = microtime(1);
$info['resource'] = $resource;
@file_put_contents('cache/'.$ipHash.'.json', json_encode($info)."\n");
if($lastAccess + $currentResLimit > microtime(1) && $accessedRes == $resource) {
return true;
}
return false;
}