SettingsCheckAccess.php

<?php
 
namespace Bitrix\Im\V2\Controller\Filter;
 
use Bitrix\Im\V2\Entity\User\User;
use Bitrix\Im\V2\Settings\SettingsError;
use Bitrix\Main\Engine\ActionFilter\Base;
use Bitrix\Main\Event;
use Bitrix\Main\EventResult;
 
class SettingsCheckAccess extends Base
{
    public function onBeforeAction(Event $event)
    {
        $userId = (int)$this->getAction()->getArguments()['userId'];
        $currentUserId = User::getCurrent()->getId();
        if (
            $userId !== $currentUserId
            && !User::getCurrent()->isAdmin()
        )
        {
            $this->addError(new SettingsError(SettingsError::ACCESS_DENIED));
 
            return new EventResult(EventResult::ERROR, null, null, $this);
        }
 
        return null;
    }
}