composer update

vendor/aws/aws-sdk-php/src/functions.php

@@ -274,6 +274,25 @@ function default_http_handler()
     throw new \RuntimeException('Unknown Guzzle version: ' . $version);
 }
 
+/**
+ * Gets the default user agent string depending on the Guzzle version
+ *
+ * @return string
+ */
+function default_user_agent()
+{
+    $version = (string) ClientInterface::VERSION;
+    if ($version[0] === '5') {
+        return \GuzzleHttp\Client::getDefaultUserAgent();
+    }
+
+    if ($version[0] === '6') {
+        return \GuzzleHttp\default_user_agent();
+    }
+
+    throw new \RuntimeException('Unknown Guzzle version: ' . $version);
+}
+
 /**
  * Serialize a request for a command but do not send it.
  *
@@ -353,3 +372,18 @@ function manifest($service = null)
         "The service \"{$service}\" is not provided by the AWS SDK for PHP."
     );
 }
+
+/**
+ * Checks if supplied parameter is a valid hostname
+ *
+ * @param string $hostname
+ * @return bool
+ */
+function is_valid_hostname($hostname)
+{
+    return (
+        preg_match("/^([a-z\d](-*[a-z\d])*)(\.([a-z\d](-*[a-z\d])*))*\.?$/i", $hostname)
+        && preg_match("/^.{1,253}$/", $hostname)
+        && preg_match("/^[^\.]{1,63}(\.[^\.]{0,63})*$/", $hostname)
+    );
+}