From ee8d18f0f9dafd2b148a28a2647f62559c76a960 Mon Sep 17 00:00:00 2001
From: Silvio Rhatto <rhatto@riseup.net>
Date: Fri, 16 Oct 2015 11:59:13 -0300
Subject: Cached bookmarks: remove $cacheFolder

---
 data/config.default.php                  |  7 +------
 data/templates/default/bookmarks.tpl.php | 19 ++++++++++++++-----
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/data/config.default.php b/data/config.default.php
index dd220ac..95df176 100644
--- a/data/config.default.php
+++ b/data/config.default.php
@@ -788,14 +788,9 @@ $allowUnittestMode = false;
  * copy exists.
  *
  * You should download SemanticScuttle bookmarks using a tool like
- * https://git.sarava.org/?p=httruta.git
+ * https://git.fluxo.info/?p=httruta.git
  */
 
-/**
- * Set to the filesystem folder where your bookmark cache resides.
- */
-$cacheFolder = null;
-
 /**
  * Set to the base public URL of you cache folder.
  */
diff --git a/data/templates/default/bookmarks.tpl.php b/data/templates/default/bookmarks.tpl.php
index 35bbcdb..27b27ee 100644
--- a/data/templates/default/bookmarks.tpl.php
+++ b/data/templates/default/bookmarks.tpl.php
@@ -339,15 +339,24 @@ if ($currenttag!= '') {
 
     // Local cache
     $cacheLink = null;
-    if ($GLOBALS['cacheFolder'] != null && $GLOBALS['cacheUrl'] != null) {
+    if ($GLOBALS['cacheUrl'] != null) {
       // Hashing discussion at http://linuxprocess.free.fr/MHonArc/Oct-2005/msg00016.html
       $assetHash = sha1($row['bAddress'] . "\n");
       $assetHash = substr($assetHash, 0, 2) . '/' . substr($assetHash, 2, 2) . '/' . $assetHash;
-      $assetFile = $GLOBALS['cacheFolder'] . '/' . $assetHash;
+      $assetLink = $GLOBALS['cacheUrl'] . '/' . $assetHash;
 
-      if (file_exists($assetFile)) {
-        $assetLink = $GLOBALS['cacheUrl'] . '/' . $assetHash;
-        $cacheLink = "| <a href=\"$assetLink\">Cache</a>";
+      // Check if the link exists
+      if ($fp = curl_init($assetLink)) {
+        curl_setopt($fp, CURLOPT_NOBODY, true);
+        curl_exec($fp);
+
+        $retcode = curl_getinfo($fp, CURLINFO_HTTP_CODE);
+
+        if ($retcode == 200) {
+          $cacheLink = "| <a href=\"$assetLink\">Cache</a>";
+        }
+
+        curl_close($fp);
       }
     }
 
-- 
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