Add a max_level to _sanitize_for_dump() so that we don't blow the stack.

modules/gallery/libraries/MY_Kohana_Exception.php

@@ -41,16 +41,21 @@ public static function dump($value, $length=128, $max_level=5) {
    * data, such as session ids and passwords / hashes.
    */
   public static function safe_dump($value, $key, $length=128, $max_level=5) {
-    return parent::dump(self::_sanitize_for_dump($value, $key), $length, $max_level);
+    return parent::dump(self::_sanitize_for_dump($value, $key, $max_level), $length, $max_level);
   }
 
   /**
    * Elides sensitive data which shouldn't be echoed to the client,
    * such as passwords, and other secrets.
    */
-  /* Visible for testing*/ static function _sanitize_for_dump($value, $key=null) {
+  /* Visible for testing*/ static function _sanitize_for_dump($value, $key=null, $max_level) {
     // Better elide too much than letting something through.
     // Note: unanchored match is intended.
+    if (!$max_level) {
+      // Too much recursion; give up.  We gave it our best shot.
+      return $value;
+    }
+
     $sensitive_info_pattern =
       '/(password|pass|email|hash|private_key|session_id|session|g3sid|csrf|secret)/i';
     if (preg_match($sensitive_info_pattern, $key) ||
@@ -63,7 +68,7 @@ public static function safe_dump($value, $key, $length=128, $max_level=5) {
       } else if ($value instanceof User_Model) {
         return get_class($value) . ' object for "' . $value->name . '" - details omitted for display';
       }
-      return self::_sanitize_for_dump((array) $value, $key);
+      return self::_sanitize_for_dump((array) $value, $key, $max_level - 1);
     } else if (is_array($value)) {
       $result = array();
       foreach ($value as $k => $v) {
@@ -78,7 +83,7 @@ public static function safe_dump($value, $key, $length=128, $max_level=5) {
         if (is_object($v)) {
           $key_for_display .= ' (type: ' . get_class($v) . ')';
         }
-        $result[$key_for_display] = self::_sanitize_for_dump($v, $actual_key);
+        $result[$key_for_display] = self::_sanitize_for_dump($v, $actual_key, $max_level - 1);
       }
     } else {
       $result = $value;