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retrieve SSL cert and parse it, check the issuer, the expiration date and the SAN

pull/63/head
Nicolas Roman 1 year ago
parent
commit
69936f67db
1 changed files with 64 additions and 0 deletions
  1. +64
    -0
      lib/letsencrypt.php

+ 64
- 0
lib/letsencrypt.php View File

@ -120,4 +120,68 @@ class LetsEncrypt
return true;
}
/**
* Retrieve the SSL certificate from the URL
* @param string $url
* @return Array|false $cont list of parameters of the certificate, or false
*/
public function getCertificate($url)
{
$stream = stream_context_create(array("ssl" => array("capture_peer_cert" => true)));
$read = fopen($url, "rb", false, $stream);
$cont = stream_context_get_params($read);
return $cont;
}
/**
* Parse the certificat arguments and extract data
* @param Array $certificateParameters certificat arguments
* @return Array $infosCert contains only the issuer, domains and expiration date
*/
public function parseCertificate($certificateParameters)
{
$infosCert = array();
$parsedParameters = openssl_x509_parse($certificateParameters["options"]["ssl"]["peer_certificate"]);
$issuer = $parsedParameters["issuer"]["O"];
$includedDomains = $parsedParameters["extensions"]["subjectAltName"];
$validUntil = $parsedParameters["validTo_time_t"];
array_push($infosCert, $issuer);
array_push($infosCert, $includedDomains);
array_push($infosCert, $validUntil);
return $infosCert;
}
/**
* Check wether the certificat is issued by Let's Encrypt or not
* @param string $issuer name of the certificat issuer
* @return boolean
*/
public function isCertIssuedByLetsEncrypt($issuer)
{
return ($issuer === "Let's Encrypt") ? true : false;
}
/**
* Check wether the certificat is valid or not
* @param string $timestampCertValidUntil certificat expiration date in timestamp
* @return boolean
*/
public function isCertValid($timestampCertValidUntil)
{
$currentDate = time();
return ($timestampCertValidUntil > $currentDate) ? true : false;
}
public function isDomainIncludedInCert($domainRequested, $san)
{
$san = preg_replace('/DNS:| DNS:/', '', $san);
$sanArray = explode(',', $san);
return (in_array($domainRequested, $sanArray)) ? true : false;
}
}

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