cookie.php

См. документацию.

<?php
 
namespace Bitrix\Main\Web;
 
use Bitrix\Main\Config;
use Bitrix\Main\SiteDomainTable;
 
class Cookie extends Http\Cookie
{
    public const SPREAD_SITES = 1;
    public const SPREAD_DOMAIN = 2;
 
    protected $spread;
    protected $originalName;

    public function __construct($name, $value, $expires = null, $addPrefix = true)
    {
        $this->name = ($addPrefix ? static::generateCookieName($name) : $name);
        $this->originalName = $name;
        $this->value = $value;
        $this->expires = ($expires === null ? time() + 31104000 : $expires); //60*60*24*30*12
        $this->spread = static::SPREAD_DOMAIN | static::SPREAD_SITES;
        $this->setDefaultsFromConfig();
    }
 
    protected static function generateCookieName($name)
    {
        static $cookiePrefix = null;
 
        if ($cookiePrefix === null)
        {
            $cookiePrefix = Config\Option::get("main", "cookie_name", "BITRIX_SM") . "_";
            $cookiePrefix = static::normalizeName($cookiePrefix);
        }
        if (!str_starts_with($name, $cookiePrefix))
        {
            $name = $cookiePrefix . $name;
        }
 
        return $name;
    }
 
    protected function setDefaultsFromConfig()
    {
        $cookiesSettings = Config\Configuration::getValue('cookies');
 
        $this->secure = ($cookiesSettings['secure'] ?? false);
        $this->httpOnly = ($cookiesSettings['http_only'] ?? true);
        if (isset($cookiesSettings['samesite']))
        {
            $this->sameSite = $cookiesSettings['samesite'];
        }
    }
 
    public function getDomain(): ?string
    {
        if ($this->domain === null)
        {
            $this->domain = static::getCookieDomain();
        }
 
        return $this->domain;
    }
 
    public function getOriginalName(): string
    {
        return $this->originalName;
    }
 
    public function setSpread($spread)
    {
        $this->spread = $spread;
 
        return $this;
    }
 
    public function getSpread()
    {
        return $this->spread;
    }

    public static function getCookieDomain()
    {
        static $domain = null;
 
        if ($domain !== null)
        {
            return $domain;
        }
 
        $request = \Bitrix\Main\Context::getCurrent()->getRequest();
        $httpHost = $request->getHttpHost();
 
        $recordset = SiteDomainTable::getList([
            'order' => ['DOMAIN_LENGTH' => 'ASC'],
            'cache' => ['ttl' => 86400],
        ]);
 
        while ($record = $recordset->fetch())
        {
            if (strcasecmp(mb_substr('.' . $httpHost, -(mb_strlen($record['DOMAIN']) + 1)), "." . $record['DOMAIN']) == 0)
            {
                $domain = $record['DOMAIN'];
 
                return $domain;
            }
        }
 
        $domain = '';
 
        return $domain;
    }

    public static function normalizeName(string $name): string
    {
        // cookie name cannot contain "=", ",", ";", " ", "\t", "\r", "\n", "\013", or "\014"
        return preg_replace("/[=,; \\t\\r\\n\\013\\014]/", '', $name);
    }
}