Cron has to be executed with the correct user - fixes 13912 and others

diff --git a/cron.php b/cron.php
index 676cb62bb56ffa678695f1996bd3f503433eaa6e..c6236897227818dfd1d55b6110005771acfa12f9 100644 (file)
--- a/cron.php
+++ b/cron.php
@@ -73,6 +73,22 @@ try {
                // set to run indefinitely if needed
                set_time_limit(0);
 
+               // the cron job must be executed with the right user
+               if (!OC_Util::runningOnWindows())  {
+                       if (!function_exists('posix_getuid')) {
+                               echo "The posix extensions are required - see http://php.net/manual/en/book.posix.php" . PHP_EOL;
+                               exit(0);
+                       }
+                       $user = posix_getpwuid(posix_getuid());
+                       $configUser = posix_getpwuid(fileowner(OC::$SERVERROOT . '/config/config.php'));
+                       if ($user['name'] !== $configUser['name']) {
+                               echo "Console has to be executed with the same user as the web server is operated" . PHP_EOL;
+                               echo "Current user: " . $user['name'] . PHP_EOL;
+                               echo "Web server user: " . $configUser['name'] . PHP_EOL;
+                               exit(0);
+                       }
+               }
+
                $config = OC::$server->getConfig();
                $instanceId = $config->getSystemValue('instanceid');
                $lockFileName = 'owncloud-server-' . $instanceId . '-cron.lock';