/**
* Create a signed Amazon CloudFront Cookie.
*
* @param string $url URL to sign (can include query string
* and wildcards). Not required
* when passing a custom $policy.
* @param string|integer|null $expires UTC Unix timestamp used when signing
* with a canned policy. Not required
* when passing a custom $policy.
* @param string $policy JSON policy. Use this option when
* creating a signed cookie for a custom
* policy.
*
* @return array The authenticated cookie parameters
* @throws \InvalidArgumentException if the URL provided is invalid
* @link http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/private-content-signed-cookies.html
*/
public function getSignedCookie($url = null, $expires = null, $policy = null)
{
if ($url) {
$this->validateUrl($url);
}
$cookieParameters = [];
$signature = $this->signer->getSignature($url, $expires, $policy);
foreach ($signature as $key => $value) {
$cookieParameters["CloudFront-{$key}"] = $value;
}
return $cookieParameters;
}
