/home/techb158/immovalet.ca/Client/stripe-php/lib
Edit: /home/techb158/immovalet.ca/Client/stripe-php/lib/WebhookSignature.php (4369B)
0) && ((time() - $timestamp) > $tolerance)) {
throw new Error\SignatureVerification(
"Timestamp outside the tolerance zone",
$header,
$payload
);
}
return true;
}
/**
* Extracts the timestamp in a signature header.
*
* @param string $header the signature header
* @return int the timestamp contained in the header, or -1 if no valid
* timestamp is found
*/
private static function getTimestamp($header)
{
$items = explode(",", $header);
foreach ($items as $item) {
$itemParts = explode("=", $item, 2);
if ($itemParts[0] == "t") {
if (!is_numeric($itemParts[1])) {
return -1;
}
return intval($itemParts[1]);
}
}
return -1;
}
/**
* Extracts the signatures matching a given scheme in a signature header.
*
* @param string $header the signature header
* @param string $scheme the signature scheme to look for.
* @return array the list of signatures matching the provided scheme.
*/
private static function getSignatures($header, $scheme)
{
$signatures = [];
$items = explode(",", $header);
foreach ($items as $item) {
$itemParts = explode("=", $item, 2);
if ($itemParts[0] == $scheme) {
array_push($signatures, $itemParts[1]);
}
}
return $signatures;
}
/**
* Computes the signature for a given payload and secret.
*
* The current scheme used by Stripe ("v1") is HMAC/SHA-256.
*
* @param string $payload the payload to sign.
* @param string $secret the secret used to generate the signature.
* @return string the signature as a string.
*/
private static function computeSignature($payload, $secret)
{
return hash_hmac("sha256", $payload, $secret);
}
}