messageaccess.php

См. документацию.

<?php
 
namespace Bitrix\Mail\Helper;
 
use Bitrix\Main;
use Bitrix\Mail\MailboxTable;
use Bitrix\Mail\MailMessageTable;

class MessageAccess
{
    public static function createToken($mailBoxId, $messageId, $entityType, $entityId, $ufId = '0'): string
    {
        return md5(sprintf(
            '%u:%u:%u:%s:%s:%u', // '%u:%u:%u:%s:%s:%u'
            time(),
            $mailBoxId,
            $messageId,
            $entityType,
            $ufId,
            $entityId
        ));
    }
 
    public static function createSecret(): string
    {
        return bin2hex(\Bitrix\Main\Security\Random::getBytes(16));
    }
 
    public static function isMailboxOwner(int $mailboxId, int $userId): bool
    {
        return Message::isMailboxOwner($mailboxId, $userId);
    }
 
    public static function isMessageOwner(\Bitrix\Mail\Item\Message $message, $userId): bool
    {
        return \Bitrix\Mail\MessageAccess::createForMessage($message, $userId)->isOwner();
    }
 
    public static function checkAccessForChat(int $chatId, int $userId): bool
    {
        if (Main\Loader::includeModule('im'))
        {
            $data = \CIMChat::GetChatData(['ID' => $chatId]);
            $userInChat = $data['userInChat'][$chatId] ?? [];
            if (in_array($userId, $userInChat, true))
            {
                return true;
            }
        }
 
        return false;
    }
 
    public static function checkAccessForCalendarEvent(int $calendarEventId, int $userId): bool
    {
        if (Main\Loader::includeModule('calendar'))
        {
            $attendeeIds = [];
            $entry = \CCalendarEvent::getEventForViewInterface($calendarEventId);
 
            if ($entry && isset($entry['ATTENDEE_LIST']))
            {
                foreach($entry['ATTENDEE_LIST'] as $attendee)
                {
                    $attendeeId = (int)$attendee['id'];
                    if ($attendeeId > 0)
                    {
                        $attendeeIds[] = $attendeeId;
                    }
                }
            }
 
            if (in_array($userId, $attendeeIds, true))
            {
                return true;
            }
        }
 
        return false;
    }
}