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pezcurrel 2024-08-27 19:36:09 +02:00
parent 008864ede1
commit fcd2064983
1 changed files with 26 additions and 0 deletions
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web/lib/ckratelimit.php Normal file
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<?php
function ckratelimit($headers) {
$aaheaders=[];
array_shift($headers);
foreach ($headers as $header)
if (preg_match('#^([^:]+): (.*)$#',$header,$matches)===1)
$aaheaders[strtolower($matches[1])]=$matches[2];
//$aaheaders['x-ratelimit-remaining']=0;
//print_r($aaheaders);
if (!isset($aaheaders['date'])) return ['ok'=>false,'error'=>'no «date» header'];
if (!isset($aaheaders['x-ratelimit-reset'])) return ['ok'=>false,'error'=>'no «x-ratelimit-reset» header'];
if (!isset($aaheaders['x-ratelimit-remaining'])) return ['ok'=>false,'error'=>'no «x-ratelimit-remaining» header'];
if (preg_match('#^\d+$#',$aaheaders['x-ratelimit-remaining'])!==1) return ['ok'=>false,'error'=>'«x-ratelimit-remaining» header is not an integer'];
$remaining=$aaheaders['x-ratelimit-remaining']+0;
$date=@strtotime($aaheaders['date']);
if (!is_int($date)) return ['ok'=>false,'error'=>'«date» header could not be converted to a unix timestamp'];
$reset=@strtotime($aaheaders['x-ratelimit-reset']);
if (!is_int($reset)) return ['ok'=>false,'error'=>'«x-ratelimit-reset» header could not be converted to a unix timestamp'];
// don't do the one on the line below, since it happens lots of times
//if ($reset<$date) return ['ok'=>false,'error'=>'the unix timestamp parsed from «x-ratelimit-reset» header is less than the unix timestamp parsed from «date» header'];
if ($remaining==0)
return ['ok'=>true,'sleep'=>$reset-$date+1,'remaining'=>$remaining];
else
return ['ok'=>true,'sleep'=>0,'remaining'=>$remaining];
}
?>