From c89365f10e1703a08f33b1798bcaecd169aa8861 Mon Sep 17 00:00:00 2001
From: plegall <plg@piwigo.org>
Date: Thu, 14 Jun 2012 21:46:47 +0000
Subject: feature 2632: add a test on upgrade.php, if a remote site is detected
 downgrade to 2.3.4

git-svn-id: http://piwigo.org/svn/trunk@15680 68402e56-0260-453c-a942-63ccdbb3a9ee
---
 admin/include/updates.class.php |  8 ++++----
 upgrade.php                     | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+), 4 deletions(-)

diff --git a/admin/include/updates.class.php b/admin/include/updates.class.php
index 524b627a7..3a81fbb0f 100644
--- a/admin/include/updates.class.php
+++ b/admin/include/updates.class.php
@@ -359,11 +359,11 @@ class updates
     }
   }
 
-  function upgrade_to($upgrade_to, &$step)
+  function upgrade_to($upgrade_to, &$step, $check_current_version=true)
   {
     global $page, $conf, $template;
 
-    if (!version_compare($_POST['upgrade_to'], PHPWG_VERSION, '>'))
+    if ($check_current_version and !version_compare($upgrade_to, PHPWG_VERSION, '>'))
     {
       redirect(get_root_url().'admin.php?page=plugin-'.basename(dirname(__FILE__)));
     }
@@ -371,14 +371,14 @@ class updates
     if ($step == 2)
     {
       preg_match('/(\d+\.\d+)\.(\d+)/', PHPWG_VERSION, $matches);
-      $code =  $matches[1].'.x_to_'.$_POST['upgrade_to'];
+      $code =  $matches[1].'.x_to_'.$upgrade_to;
       $dl_code = str_replace(array('.', '_'), '', $code);
       $remove_path = $code;
       $obsolete_list = 'obsolete.list';
     }
     else
     {
-      $code = $_POST['upgrade_to'];
+      $code = $upgrade_to;
       $dl_code = $code;
       $remove_path = version_compare($code, '2.0.8', '>=') ? 'piwigo' : 'piwigo-'.$code;
       $obsolete_list = PHPWG_ROOT_PATH.'install/obsolete.list';
diff --git a/upgrade.php b/upgrade.php
index 7bee609aa..b0edd7609 100644
--- a/upgrade.php
+++ b/upgrade.php
@@ -229,6 +229,44 @@ $template->assign(array(
   )
 );
 
+// +-----------------------------------------------------------------------+
+// | Remote sites are not compatible with Piwigo 2.4+                      |
+// +-----------------------------------------------------------------------+
+
+$has_remote_site = false;
+
+$query = 'SELECT galleries_url FROM '.SITES_TABLE.';';
+$result = pwg_query($query);
+while ($row = pwg_db_fetch_assoc($result))
+{
+  if (url_is_remote($row['galleries_url']))
+  {
+    $has_remote_site = true;
+  }
+}
+
+if ($has_remote_site)
+{
+  include_once(PHPWG_ROOT_PATH.'admin/include/updates.class.php');
+  include_once(PHPWG_ROOT_PATH.'admin/include/pclzip.lib.php');
+
+  $page['errors'] = array();
+  $step = 3;
+  updates::upgrade_to('2.3.4', $step, false);
+
+  if (!empty($page['errors']))
+  {
+    echo '<ul>';
+    foreach ($page['errors'] as $error)
+    {
+      echo '<li>'.$error.'</li>';
+    }
+    echo '</ul>';
+  }
+
+  exit();
+}
+
 // +-----------------------------------------------------------------------+
 // |                            upgrade choice                             |
 // +-----------------------------------------------------------------------+
-- 
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