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Create SSL.class.php

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Namhyeon Go 2020-04-17 17:50:16 +09:00 committed by GitHub
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<?php
// https://stackoverflow.com/questions/3464113/is-it-possible-to-read-ssl-information-in-php-from-any-website
class SSL {
public $domain, $validFrom, $validTo, $issuer, $validity, $validitytot, $crtValRemaining;
private static function instantiate($url, $info) {
$obj = new static;
$obj->domain = $url;
$obj->validFrom = $info['validFrom'];
$obj->validTo = $info['validTo'];
$obj->issuer = $info['issuer'];
$obj->validity = $info['validity'];
$obj->validitytot = $info['validitytot'];
$obj->crtValRemaining = $info['crtValRemaining'];
return $obj;
}
public static function getSSLinfo($url) {
$ssl_info = [];
$certinfo = static::getCertificateDetails($url);
$validFrom_time_t_m = static::dateFormatMonth($certinfo['validFrom_time_t']);
$validTo_time_t_m = static::dateFormatMonth($certinfo['validTo_time_t']);
$validFrom_time_t = static::dateFormat($certinfo['validFrom_time_t']);
$validTo_time_t = static::dateFormat($certinfo['validTo_time_t']);
$current_t = static::dateFormat(time());
$ssl_info['validFrom'] = $validFrom_time_t_m;
$ssl_info['validTo'] = $validTo_time_t_m;
$ssl_info['issuer'] = $certinfo['issuer']['O'];
$ssl_info['validity'] = static::diffDate($current_t, $validTo_time_t)." days";
$ssl_info['validitytot'] = (static::diffDate($validFrom_time_t, $validTo_time_t)-1).' days';
$ssl_info['crtValRemaining'] =$certinfo['validTo_time_t'];
return static::instantiate($url, $ssl_info); // return an object
}
private static function getCertificateDetails($url) {
$urlStr = strtolower(trim($url));
$parsed = parse_url($urlStr);// add http://
if (empty($parsed['scheme'])) {
$urlStr = 'http://' . ltrim($urlStr, '/');
}
$orignal_parse = parse_url($urlStr, PHP_URL_HOST);
$get = stream_context_create(array("ssl" => array("capture_peer_cert" => TRUE)));
$read = stream_socket_client("ssl://".$orignal_parse.":443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $get);
$cert = stream_context_get_params($read);
$certinfo = openssl_x509_parse($cert['options']['ssl']['peer_certificate']);
return $certinfo;
}
private static function dateFormat($stamp) {
return strftime("%Y-%m-%d", $stamp);
}
private static function dateFormatMonth($stamp) {
return strftime("%Y-%b-%d", $stamp);
}
private static function diffDate($from, $to) {
$date1=date_create($from);
$date2=date_create($to);
$diff=date_diff($date1,$date2);
return ltrim($diff->format("%R%a"), "+");
}
}