From 29eb5a62847349897716c316c8e409e5209f8535 Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Fri, 8 Jun 2007 05:50:58 +0000
Subject: - Patch #146910 by dww: only allow enabling modules with the same
 Drupal core compatibility version.

---
 update.php | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'update.php')

diff --git a/update.php b/update.php
index 2dcda2914..21c33ff82 100644
--- a/update.php
+++ b/update.php
@@ -701,6 +701,37 @@ function update_create_batch_table() {
   return $ret;
 }
 
+/**
+ * Disable anything in the {system} table that is not compatible with the
+ * current version of Drupal core.
+ */
+function update_fix_compatibility() {
+  $ret = array();
+  $incompatible = array();
+  $themes = system_theme_data();
+  $modules = module_rebuild_cache();
+  $query = db_query("SELECT name, type, status FROM {system} WHERE status = 1 AND type IN ('module','theme')");
+  while ($result = db_fetch_object($query)) {
+    $name = $result->name;
+    $file = array();
+    if ($result->type == 'module' && isset($modules[$name])) {
+      $file = $modules[$name];
+    }
+    else if ($result->type == 'theme' && isset($themes[$name])) {
+      $file = $themes[$name];
+    }
+    if (!isset($file)
+        || !isset($file->info['core'])
+        || $file->info['core'] != DRUPAL_CORE_COMPATIBILITY) {
+      $incompatible[] = $name;
+    }
+  }
+  if (!empty($incompatible)) {
+    $ret[] = update_sql("UPDATE {system} SET status = 0 WHERE name IN ('". implode("','", $incompatible) ."')");
+  }
+  return $ret;
+}
+
 /**
  * Add the update task list to the current page.
  */
@@ -747,6 +778,7 @@ if (($access_check == FALSE) || ($user->uid == 1)) {
   update_fix_watchdog_115();
   update_fix_watchdog();
   update_fix_sessions();
+  update_fix_compatibility();
 
   $op = isset($_REQUEST['op']) ? $_REQUEST['op'] : '';
   switch ($op) {
-- 
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