spaces.php

aws/Aws/CloudFront/CookieSigner.php

@@ -0,0 +1,65 @@
+<?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');
+        }
+    }
+}