Index: lib/grouplib.php
===================================================================
RCS file: /globalcvs/ou-moodle/lib/grouplib.php,v
retrieving revision 1.6
diff -u -r1.6 grouplib.php
--- lib/grouplib.php	17 Mar 2008 11:18:06 -0000	1.6
+++ lib/grouplib.php	2 May 2008 11:37:30 -0000
@@ -92,7 +92,7 @@
 
 /**
  * Gets array of all groups in a specified course.
- * @param int $courseid The id of the course.
+ * @param int $courseid The id of the course or 0 for any..
  * @param mixed $userid optional user id or array of ids, returns only groups of the user.
  * @param int $groupingid optional returns only groups in the specified grouping.
  * @return array | false Returns an array of the group objects or false if no records
@@ -127,10 +127,19 @@
         $groupingfrom  = "";
         $groupingwhere = "";
     }
+    
+    if(!empty($courseid)) {
+        if(empty($userid) && empty($groupingid)) {
+            // The list would be too large as sites may have tens of thousands
+            // of groups (or more) - require some kind of restriction
+            error('Cannot request list of all groups across entire site');
+        }
+        $coursewhere = "AND g.courseid = '$courseid'";
+    }
 
     return get_records_sql("SELECT $fields
                               FROM {$CFG->prefix}groups g $userfrom $groupingfrom
-                             WHERE g.courseid = $courseid $userwhere $groupingwhere
+                             WHERE $coursewhere $userwhere $groupingwhere
                           ORDER BY name ASC");
 }