[ticket/10824] Add json sanitizer class

PHPBB3-10824

phpBB/phpbb/json_sanitizer.php

@@ -0,0 +1,41 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb;
+
+/**
+* JSON sanitizer class
+*/
+class json_sanitizer
+{
+	/**
+	 * Sanitize json data
+	 *
+	 * @param array $data Data to sanitize
+	 *
+	 * @return array Sanitized data
+	 */
+	static public function sanitize($data)
+	{
+		if (!empty($data))
+		{
+			$json_sanitizer = function (&$value, $key) {
+				$type_cast_helper = new \phpbb\request\type_cast_helper();
+				$type_cast_helper->set_var($value, $value, gettype($value), true);
+			};
+			array_walk_recursive($data, $json_sanitizer);
+		}
+
+		return $data;
+	}
+}