-// Checks if an update is available for Shaarli.
-// (at most once a day, and only for registered user.)
-// Output: '' = no new version.
-// other= the available version.
-function checkUpdate()
-{
- if (!isLoggedIn()) return ''; // Do not check versions for visitors.
- if (empty($GLOBALS['config']['ENABLE_UPDATECHECK'])) return ''; // Do not check if the user doesn't want to.
-
- // Get latest version number at most once a day.
- if (!is_file($GLOBALS['config']['UPDATECHECK_FILENAME']) || (filemtime($GLOBALS['config']['UPDATECHECK_FILENAME'])<time()-($GLOBALS['config']['UPDATECHECK_INTERVAL'])))
- {
- $version = shaarli_version;
- list($headers, $data) = get_http_url('https://raw.githubusercontent.com/shaarli/Shaarli/master/shaarli_version.php', 2);
- if (strpos($headers[0], '200 OK') !== false) {
- $version = str_replace(' */ ?>', '', str_replace('<?php /* ', '', $data));
- }
- // If failed, never mind. We don't want to bother the user with that.
- file_put_contents($GLOBALS['config']['UPDATECHECK_FILENAME'],$version); // touch file date
- }
- // Compare versions:
- $newestversion=file_get_contents($GLOBALS['config']['UPDATECHECK_FILENAME']);
- if (version_compare($newestversion,shaarli_version)==1) return $newestversion;
- return '';
-}
-