Allow user info to be retrieved without groups

Some parts of dokuwiki (e.g. recent changes, old revisions) can
requests lots of user info (to provide editor names) without
requiring any group information.

This change also implements caching of user info by authmysql &
authpgsql plugins to avoid repeated querying of the DB to retrieve
the same user information.

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/plugins/auth.php b/lib/plugins/auth.php
index b04735639..f9e5cded9 100644
--- a/lib/plugins/auth.php
+++ b/lib/plugins/auth.php
@@ -15,6 +15,9 @@ if(!defined('DOKU_INC')) die();
 class DokuWiki_Auth_Plugin extends DokuWiki_Plugin {
     public $success = true;
 
+    const  IGNORE_GROUPS = false;
+    const  REQUIRE_GROUPS = true;
+
     /**
      * Possible things an auth backend module may be able to
      * do. The things a backend can do need to be set to true
@@ -234,9 +237,10 @@ class DokuWiki_Auth_Plugin extends DokuWiki_Plugin {
      *
      * @author  Andreas Gohr <andi@splitbrain.org>
      * @param   string $user the user name
+     * @param   bool $requireGroups whether or not the returned data must include groups
      * @return  array containing user data or false
      */
-    public function getUserData($user) {
+    public function getUserData($user, $requireGroups=true) {
         if(!$this->cando['external']) msg("no valid authorisation system in use", -1);
         return false;
     }