File: application/modules/extensions/aws/Aws/CloudFront/CookieSigner.php

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File: application/modules/extensions/aws/Aws/CloudFront/CookieSigner.php
Role: Application script
Content type: text/plain
Description: Application script
Class: Pretty PHP S3 Files Manager
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Last change:
Date: 4 years ago
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<?php
namespace Aws\CloudFront;

class
CookieSigner
{
   
/** @var Signer */
   
private $signer;

    private static
$schemes = [
       
'http' => true,
       
'https' => true,
    ];

   
/**
     * @param $keyPairId string ID of the key pair
     * @param $privateKey string Path to the private key used for signing
     *
     * @throws \RuntimeException if the openssl extension is missing
     * @throws \InvalidArgumentException if the private key cannot be found.
     */
   
public function __construct($keyPairId, $privateKey)
    {
       
$this->signer = new Signer($keyPairId, $privateKey);
    }

   
/**
     * 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;
    }

    private function
validateUrl($url)
    {
       
$scheme = str_replace('*', '', explode('://', $url)[0]);
        if (empty(
self::$schemes[strtolower($scheme)])) {
            throw new \
InvalidArgumentException('Invalid or missing URI scheme');
        }
    }
}


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