Protect group from license borrowing

classes/webservice.php

@@ -97,6 +97,12 @@ class webservice {
      */
     protected $instanceusers;
 
+    /**
+     * Zoom group to protect from licenses redefining
+     * @var array
+     */
+    protected $protectedgroup;
+
     /**
      * Maximum limit of paid users
      * @var int
@@ -151,6 +157,7 @@ public function __construct() {
             if (!empty($config->utmost)) {
                 $this->recyclelicenses = $config->utmost;
                 $this->instanceusers = !empty($config->instanceusers);
+                $this->protectedgroup = $config->protectedgrp;
             }
 
             if ($this->recyclelicenses) {
@@ -461,7 +468,8 @@ private function get_least_recently_active_paid_user_id() {
         $userslist = $this->list_users();
 
         foreach ($userslist as $user) {
-            if ($user->type != ZOOM_USER_TYPE_BASIC && isset($user->last_login_time)) {
+            if ($user->type != ZOOM_USER_TYPE_BASIC && isset($user->last_login_time)
+                && !in_array($this->protectedgroup,$user->group_ids ?? array(),true)) { // needle: 'PROTECTED' zoom group
                 // Count the user if we're including all users or if the user is on this instance.
                 if (!$this->instanceusers || core_user::get_user_by_email($user->email)) {
                     $usertimes[$user->id] = strtotime($user->last_login_time);
@@ -476,6 +484,15 @@ private function get_least_recently_active_paid_user_id() {
         return false;
     }
 
+    /**
+     * Get a list of Zoom groups
+     *
+     * @return stdClass The call's result in JSON format.
+     */
+    public function get_groups() {
+        return $this->make_call('/groups');
+    }
+
     /**
      * Gets a user's settings.
      *

lang/en/zoom.php

@@ -320,6 +320,8 @@
 $string['privacy:metadata:zoom_meeting_participants:user_email'] = 'The email of the participant';
 $string['privacy:metadata:zoom_meeting_view'] = 'The database table to track users that view the meeting recordings';
 $string['privacy:metadata:zoom_meeting_view:userid'] = 'The id of the user that viewed the recording';
+$string['protectedgrp'] = 'Protect group';
+$string['protectedgrp_desc'] = 'Select a Zoom group to protect member users from license redefining';
 $string['recording'] = 'Recording';
 $string['recordingadd'] = 'Add Recording';
 $string['recordingdate'] = 'Recording Date';

settings.php

@@ -26,6 +26,7 @@
 
 require_once($CFG->dirroot . '/mod/zoom/locallib.php');
 require_once($CFG->libdir . '/environmentlib.php');
+require_once($CFG->dirroot . '/mod/zoom/classes/webservice.php');
 
 if ($ADMIN->fulltree) {
     require_once($CFG->dirroot . '/mod/zoom/classes/invitation.php');
@@ -171,6 +172,19 @@
         1
     );
     $settings->add($recycleonjoin);
+
+    // Only call to the web services and load the setting if the connection is OK
+    if ($status == 'connectionok') {
+        $zoomgrps[] = null;
+        $groupobj = zoom_webservice()->get_groups();
+        foreach ($groupobj->groups as $group) {
+            $zoomgrps[$group->id] = $group->name;
+        }
+        $protectedgrp = new admin_setting_configselect('zoom/protectedgrp',
+            get_string('protectedgrp','mod_zoom'),
+            get_string('protectedgrp_desc','mod_zoom'),0,$zoomgrps);
+        $settings->add($protectedgrp);   
+    }
 
     // Global settings.
     $settings->add(new admin_setting_heading(