Viewing file:  Webhook.php (3.02 KB) -rwxr-xr-x
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<?php
namespace Telnyx;
abstract class Webhook
{
const DEFAULT_TOLERANCE = 300;
/**
* Alias for constructEvent().
* Returns an Event instance using the current HTTPS request. Throws an
* Exception\UnexpectedValueException if the payload is not valid JSON, and
* an Exception\SignatureVerificationException if the signature
* verification fails for any reason.
*
* @param string $public_key secret used to generate the signature
* @param int $tolerance maximum difference allowed between the header's
* timestamp and the current time
*
* @throws Exception\UnexpectedValueException if the payload is not valid JSON,
* @throws Exception\SignatureVerificationException if the verification fails
*
* @return Event the Event instance
*/
public static function constructFromRequest($public_key = '', $tolerance = self::DEFAULT_TOLERANCE)
{
if (!isset($_SERVER['HTTP_TELNYX_SIGNATURE_ED25519']) || !isset($_SERVER['HTTP_TELNYX_TIMESTAMP'])) {
throw Exception\SignatureVerificationException::factory(
'Unable to extract timestamp and signatures from header'
);
}
$payload = @file_get_contents('php://input');
$sig_header = $_SERVER['HTTP_TELNYX_SIGNATURE_ED25519'];
$timestamp_header = $_SERVER['HTTP_TELNYX_TIMESTAMP'];
return \Telnyx\Webhook::constructEvent(
$payload, $sig_header, $timestamp_header, $public_key, $tolerance
);
}
/**
* Returns an Event instance using the provided JSON payload. Throws an
* Exception\UnexpectedValueException if the payload is not valid JSON, and
* an Exception\SignatureVerificationException if the signature
* verification fails for any reason.
*
* @param string $payload the payload sent by Telnyx
* @param string $signature_header the contents of the signature header sent by Telnyx
* @param string $timestamp the timestamp from the header sent by Telnyx
* @param string $public_key secret used to generate the signature
* @param int $tolerance maximum difference allowed between the header's
* timestamp and the current time
*
* @throws Exception\UnexpectedValueException if the payload is not valid JSON,
* @throws Exception\SignatureVerificationException if the verification fails
*
* @return Event the Event instance
*/
public static function constructEvent($payload, $signature_header, $timestamp, $public_key = '', $tolerance = self::DEFAULT_TOLERANCE)
{
WebhookSignature::verifyHeader($payload, $signature_header, $timestamp, $public_key, $tolerance);
$data = \json_decode($payload, true);
$jsonError = \json_last_error();
if (null === $data && \JSON_ERROR_NONE !== $jsonError) {
$msg = "Invalid payload: {$payload} "
. "(json_last_error() was {$jsonError})";
throw new Exception\UnexpectedValueException($msg);
}
return Event::constructFrom($data);
}
}
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