From 2965a981b7ec22866fbdf2d567d87e2d068d3617 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Fri, 31 Jul 2015 16:04:08 -0400
Subject: [PATCH] Allow to search and import missing PGP pubkeys from keyservers using Publickey.js

---
 program/lib/Roundcube/rcube_cache_shared.php |  102 +++++++++++++++++++++++----------------------------
 1 files changed, 46 insertions(+), 56 deletions(-)

diff --git a/program/lib/Roundcube/rcube_cache_shared.php b/program/lib/Roundcube/rcube_cache_shared.php
index 2c771ee..bd5fb6e 100644
--- a/program/lib/Roundcube/rcube_cache_shared.php
+++ b/program/lib/Roundcube/rcube_cache_shared.php
@@ -263,20 +263,18 @@
                 // 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') {
+            else {
                 $ckey = $this->ckey($key);
-                $data = $this->db->get($ckey);
+
+                if ($this->type == 'memcache') {
+                    $data = $this->db->get($ckey);
+                }
+                else if ($this->type == 'apc') {
+                    $data = apc_fetch($ckey);
+                }
 
                 if ($this->debug) {
                     $this->debug('get', $ckey, $data);
-                }
-            }
-            else if ($this->type == 'apc') {
-                $ckey = $this->ckey($key);
-                $data = apc_fetch($ckey);
-
-                if ($this->debug) {
-                    $this->debug('fetch', $ckey, $data);
                 }
             }
 
@@ -351,8 +349,16 @@
             $result = $this->add_record($this->ckey($key), $data);
 
             // make sure index will be updated
-            if ($result && !array_key_exists($key, $this->cache_sums)) {
-                $this->cache_sums[$key] = true;
+            if ($result) {
+                if (!array_key_exists($key, $this->cache_sums)) {
+                    $this->cache_sums[$key] = true;
+                }
+
+                $this->load_index();
+
+                if (!$this->index_changed && !in_array($key, $this->index)) {
+                    $this->index_changed = true;
+                }
             }
 
             return $result;
@@ -411,22 +417,29 @@
             // Remove all keys
             if ($key === null) {
                 foreach ($this->index as $key) {
-                    $this->delete_record($key, false);
+                    $this->delete_record($this->ckey($key));
                 }
+
                 $this->index = array();
             }
             // Remove keys by name prefix
             else if ($prefix_mode) {
-                foreach ($this->index as $k) {
+                foreach ($this->index as $idx => $k) {
                     if (strpos($k, $key) === 0) {
-                        $this->delete_record($k);
+                        $this->delete_record($this->ckey($k));
+                        unset($this->index[$idx]);
                     }
                 }
             }
             // Remove one key by name
             else {
-                $this->delete_record($key);
+                $this->delete_record($this->ckey($key));
+                if (($idx = array_search($key, $this->index)) !== false) {
+                    unset($this->index[$idx]);
+                }
             }
+
+            $this->index_changed = true;
 
             return;
         }
@@ -460,26 +473,21 @@
     {
         if ($this->type == 'memcache') {
             $result = $this->db->replace($key, $data, MEMCACHE_COMPRESSED, $this->ttl);
+
             if (!$result) {
                 $result = $this->db->set($key, $data, MEMCACHE_COMPRESSED, $this->ttl);
-            }
-            if ($this->debug) {
-                $this->debug('set', $key, $data, $result);
             }
         }
         else if ($this->type == 'apc') {
             if (apc_exists($key)) {
                 apc_delete($key);
             }
-            $result = apc_store($key, $data, $this->ttl);
 
-            if ($this->debug) {
-                $this->debug('store', $key, $data, $result);
-            }
+            $result = apc_store($key, $data, $this->ttl);
         }
 
-        if ($result) {
-            $this->index_changed = true;
+        if ($this->debug) {
+            $this->debug('set', $key, $data, $result);
         }
 
         return $result;
@@ -488,36 +496,26 @@
 
     /**
      * Deletes entry from memcache/apc DB.
+     *
+     * @param string $key Cache key name
+     *
+     * @param boolean True on success, False on failure
      */
-    private function delete_record($key, $index=true)
+    private function delete_record($key)
     {
         if ($this->type == 'memcache') {
-            $ckey = $this->ckey($key);
             // #1488592: use 2nd argument
             $result = $this->db->delete($ckey, 0);
-
-            if ($this->debug) {
-                $this->debug('delete', $ckey, null, $result);
-            }
         }
         else {
-            $ckey   = $this->ckey($key);
             $result = apc_delete($ckey);
-
-            if ($this->debug) {
-                $this->debug('delete', $ckey, null, $result);
-            }
         }
 
-        if ($result) {
-            $this->index_changed = true;
+        if ($this->debug) {
+            $this->debug('delete', $ckey, null, $result);
         }
 
-        if ($index) {
-            if (($idx = array_search($key, $this->index)) !== false) {
-                unset($this->index[$idx]);
-            }
-        }
+        return $result;
     }
 
 
@@ -526,11 +524,7 @@
      */
     private function write_index()
     {
-        if (!$this->db) {
-            return;
-        }
-
-        if ($this->type == 'db') {
+        if (!$this->db || $this->type == 'db') {
             return;
         }
 
@@ -560,7 +554,7 @@
      */
     private function load_index()
     {
-        if (!$this->db) {
+        if (!$this->db || $this->type == 'db') {
             return;
         }
 
@@ -572,17 +566,13 @@
 
         if ($this->type == 'memcache') {
             $data = $this->db->get($index_key);
-
-            if ($this->debug) {
-                $this->debug('get', $index_key, $data);
-            }
         }
         else if ($this->type == 'apc') {
             $data = apc_fetch($index_key);
+        }
 
-            if ($this->debug) {
-                $this->debug('fetch', $index_key, $data);
-            }
+        if ($this->debug) {
+            $this->debug('get', $index_key, $data);
         }
 
         $this->index = $data ? unserialize($data) : array();

--
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