1 files changed, 121 insertions, 0 deletions
diff --git a/public/system/library/response.php b/public/system/library/response.php
new file mode 100644
index 0000000..e36d3c3
--- /dev/null
+++ b/public/system/library/response.php
@@ -0,0 +1,121 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Response class
+*/
+class Response {
+	private $headers = array();
+	private $level = 0;
+	private $output;
+
+	/**
+	 * Constructor
+	 *
+	 * @param	string	$header
+	 *
+ 	*/
+	public function addHeader($header) {
+		$this->headers[] = $header;
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	string	$url
+	 * @param	int		$status
+	 *
+ 	*/
+	public function redirect($url, $status = 302) {
+		header('Location: ' . str_replace(array('&amp;', "\n", "\r"), array('&', '', ''), $url), true, $status);
+		exit();
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	int		$level
+ 	*/
+	public function setCompression($level) {
+		$this->level = $level;
+	}
+	
+	/**
+	 * 
+	 *
+	 * @return	array
+ 	*/
+	public function getOutput() {
+		return $this->output;
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	string	$output
+ 	*/	
+	public function setOutput($output) {
+		$this->output = $output;
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	string	$data
+	 * @param	int		$level
+	 * 
+	 * @return	string
+ 	*/
+	private function compress($data, $level = 0) {
+		if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false)) {
+			$encoding = 'gzip';
+		}
+
+		if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'x-gzip') !== false)) {
+			$encoding = 'x-gzip';
+		}
+
+		if (!isset($encoding) || ($level < -1 || $level > 9)) {
+			return $data;
+		}
+
+		if (!extension_loaded('zlib') || ini_get('zlib.output_compression')) {
+			return $data;
+		}
+
+		if (headers_sent()) {
+			return $data;
+		}
+
+		if (connection_status()) {
+			return $data;
+		}
+
+		$this->addHeader('Content-Encoding: ' . $encoding);
+
+		return gzencode($data, (int)$level);
+	}
+	
+	/**
+	 * 
+ 	*/
+	public function output() {
+		if ($this->output) {
+			$output = $this->level ? $this->compress($this->output, $this->level) : $this->output;
+			
+			if (!headers_sent()) {
+				foreach ($this->headers as $header) {
+					header($header, true);
+				}
+			}
+			
+			echo $output;
+		}
+	}
+}