From 5df4fe56d509a5c9702506a79f32dcd81d7adc41 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Sun, 02 Jun 2013 08:44:09 -0400
Subject: [PATCH] Fix backward copat. with cached values serialized but not base64-encoded (#1489142)

---
 program/lib/Roundcube/rcube_db.php |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/program/lib/Roundcube/rcube_db.php b/program/lib/Roundcube/rcube_db.php
index 645b85a..2d1e32e 100644
--- a/program/lib/Roundcube/rcube_db.php
+++ b/program/lib/Roundcube/rcube_db.php
@@ -835,9 +835,14 @@
      */
     public static function decode($input, $serialized = false)
     {
+        // use Base64 encoding to workaround issues with invalid
+        // or null characters in serialized string (#1489142)
         if ($serialized) {
-            // use Base64 encoding to workaround issues with invalid
-            // or null characters in serialized string (#1489142)
+            // Keep backward compatybility where base64 wasn't used
+            if (strpos(substr($input, 0, 16), ':') !== false) {
+                return self::decode(@unserialize($input));
+            }
+
             return @unserialize(base64_decode($input));
         }
 

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