From 466039ab97e67a23168798731084d4127c7f30a1 Mon Sep 17 00:00:00 2001
From: Derek Allard <derek.allard@ellislab.com>
Date: Mon, 11 Feb 2008 12:46:24 +0000
Subject: added Path Helper

---
 system/helpers/path_helper.php | 70 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 system/helpers/path_helper.php

(limited to 'system/helpers')

diff --git a/system/helpers/path_helper.php b/system/helpers/path_helper.php
new file mode 100644
index 000000000..30d26d6ee
--- /dev/null
+++ b/system/helpers/path_helper.php
@@ -0,0 +1,70 @@
+<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package		CodeIgniter
+ * @author		ExpressionEngine Dev Team
+ * @copyright	Copyright (c) 2006, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CodeIgniter Path Helpers
+ *
+ * @package		CodeIgniter
+ * @subpackage	Helpers
+ * @category	Helpers
+ * @author		ExpressionEngine Dev Team
+ * @link		http://codeigniter.com/user_guide/helpers/xml_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Set Realpath
+ *
+ * @access	public
+ * @param	string
+ * @param	bool	checks to see if the path exists
+ * @return	string
+ */	
+if (! function_exists('set_realpath'))
+{
+	function set_realpath($path, $check_existance = TRUE)
+	{
+		// Security check to make sure the path is NOT a URL.  No remote file inclusion!
+		if (preg_match("#^(http:\/\/|https:\/\/|www\.|ftp|[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})#i", $path))
+		{
+			show_error('The path you submitted must be a local server path, not a URL');
+		}
+	
+		// Resolve the path
+		if (function_exists('realpath') AND @realpath($path) !== FALSE)
+		{
+			$path = realpath($path).'/';
+		}
+	
+		// Add a trailing slash
+		$path = preg_replace("#([^/])/*$#", "\\1/", $path);
+	
+		// Make sure the path exists
+		if ($check_existance == TRUE)
+		{
+			if ( ! is_dir($path))
+			{
+				show_error('Not a valid path: '.$path);
+			}
+		}
+	
+		return $path;
+	}
+}
+
+?>
\ No newline at end of file
-- 
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