show a notification in the admin panel if a newer version is available

diff --git a/mod/admin.php b/mod/admin.php
index 4f0622532f45d3f02a073c0255efbecb409dd980..1e3005ea01017800036f305f8a94688578ee3663 100644 (file)
--- a/mod/admin.php
+++ b/mod/admin.php
@@ -615,6 +615,17 @@ function admin_page_summary(App $a) {
                $showwarning = true;
                $warningtext[] = sprintf(t('Your DB still runs with MyISAM tables. You should change the engine type to InnoDB. As Friendica will use InnoDB only features in the future, you should change this! See <a href="%s">here</a> for a guide that may be helpful converting the table engines. You may also use the command <tt>php include/dbstructure.php toinnodb</tt> of your Friendica installation for an automatic conversion.<br />'), 'https://dev.mysql.com/doc/refman/5.7/en/converting-tables-to-innodb.html');
        }
+       // Check if github.com/friendica/master/VERSION is higher then
+       // the local version of Friendica.
+       $gitversion = Cache::get("git_friendica_version");
+       if (! isset($gitversion)) {
+               $gitversion = dbesc(trim(fetch_url("https://raw.githubusercontent.com/friendica/friendica/master/VERSION")));
+               Cache::set("git_friendica_version", $gitversion, CACHE_WEEK);
+       }
+       if ( version_compare(FRIENDICA_VERSION, $gitversion)<0) {
+               $warningtext[] = t('There is a new version of friendica available.');
+               $showwarning = true;
+       }
 
        if (Config::get('system', 'dbupdate', DB_UPDATE_NOT_CHECKED) == DB_UPDATE_NOT_CHECKED) {
                require_once("include/dbstructure.php");