1 files changed, 15 insertions, 0 deletions

diff --git a/inc/functions.inc.php b/inc/functions.inc.php
index a72a589..6642e51 100644
--- a/inc/functions.inc.php
+++ b/inc/functions.inc.php
@@ -30,6 +30,21 @@ function validate_get($value, $type) {
         return $value;
 }
 
+function validateRRDPath($base, $path) {
+        $realpath = realpath(sprintf('%s/%s', $base, $path));
+
+        if (strpos($realpath, $base) === false)
+                return false;
+
+        if (strpos($realpath, $base) !== 0)
+                return false;
+
+        if (!preg_match('/\.rrd$/', $realpath))
+                return false;
+
+        return $realpath;
+}
+
 function crc32hex($str) {
         return sprintf("%x",crc32($str));
 }