From e48f8945b32ab5b67f1cdeb53a37d3d196e31e4d Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 20 May 2016 05:19:01 -0400
Subject: [PATCH] Fix bug where message list columns could be in wrong order after column drag-n-drop and list sorting

---
 program/lib/Roundcube/rcube_cache_shared.php |   56 ++++++++++++++++++++++++++++++++++----------------------
 1 files changed, 34 insertions(+), 22 deletions(-)

diff --git a/program/lib/Roundcube/rcube_cache_shared.php b/program/lib/Roundcube/rcube_cache_shared.php
index 3f0f20e..32ce4e8 100644
--- a/program/lib/Roundcube/rcube_cache_shared.php
+++ b/program/lib/Roundcube/rcube_cache_shared.php
@@ -161,7 +161,7 @@
         // Remove all keys
         if ($key === null) {
             $this->cache         = array();
-            $this->cache_changed = false;
+            $this->cache_changed = true;
             $this->cache_changes = array();
             $this->cache_sums    = array();
         }
@@ -237,6 +237,9 @@
         }
 
         $this->write_index();
+
+        // reset internal cache index, thanks to this we can force index reload
+        $this->index = null;
     }
 
 
@@ -255,7 +258,15 @@
         }
 
         if ($this->type != 'db') {
-            if ($this->type == 'memcache') {
+            $this->load_index();
+
+            // Consistency check (#1490390)
+            if (!in_array($key, $this->index)) {
+                // we always check if the key exist in the index
+                // to have data in consistent state. Keeping the index consistent
+                // is needed for keys delete operation when we delete all keys or by prefix.
+            }
+            else if ($this->type == 'memcache') {
                 $data = $this->db->get($this->ckey($key));
             }
             else if ($this->type == 'apc') {
@@ -330,7 +341,15 @@
         }
 
         if ($this->type == 'memcache' || $this->type == 'apc') {
-            return $this->add_record($this->ckey($key), $data);
+            $result = $this->add_record($this->ckey($key), $data);
+
+            // make sure index will be updated
+            if ($result && !array_key_exists($key, $this->cache_sums)) {
+                $this->cache_changed    = true;
+                $this->cache_sums[$key] = true;
+            }
+
+            return $result;
         }
 
         $key_exists = array_key_exists($key, $this->cache_sums);
@@ -426,13 +445,12 @@
     /**
      * Adds entry into memcache/apc DB.
      *
-     * @param string  $key   Cache key name
-     * @param mxied   $data  Serialized cache data
-     * @param bollean $index Enables immediate index update
+     * @param string $key  Cache key name
+     * @param mixed  $data Serialized cache data
      *
      * @param boolean True on success, False on failure
      */
-    private function add_record($key, $data, $index=false)
+    private function add_record($key, $data)
     {
         if ($this->type == 'memcache') {
             $result = $this->db->replace($key, $data, MEMCACHE_COMPRESSED, $this->ttl);
@@ -445,17 +463,6 @@
                 apc_delete($key);
             }
             $result = apc_store($key, $data, $this->ttl);
-        }
-
-        // Update index
-        if ($index && $result) {
-            $this->load_index();
-
-            if (array_search($key, $this->index) === false) {
-                $this->index[] = $key;
-                $data = serialize($this->index);
-                $this->add_record($this->ikey(), $data);
-            }
         }
 
         return $result;
@@ -500,10 +507,15 @@
 
         // Make sure index contains new keys
         foreach ($this->cache as $key => $value) {
-            if ($value !== null) {
-                if (array_search($key, $this->index) === false) {
-                    $this->index[] = $key;
-                }
+            if ($value !== null && !in_array($key, $this->index)) {
+                $this->index[] = $key;
+            }
+        }
+
+        // new keys added using self::write()
+        foreach ($this->cache_sums as $key => $value) {
+            if ($value === true && !in_array($key, $this->index)) {
+                $this->index[] = $key;
             }
         }
 

--
Gitblit v1.9.1