<?php
declare(strict_types=1);
/**
* Pimcore
*
* This source file is available under two different licenses:
* - GNU General Public License version 3 (GPLv3)
* - Pimcore Enterprise License (PEL)
* Full copyright and license information is available in
* LICENSE.md which is distributed with this source code.
*
* @copyright Copyright (c) Pimcore GmbH (http://www.pimcore.org)
* @license http://www.pimcore.org/license GPLv3 and PEL
*/
namespace Pimcore\Targeting\Storage;
use Pimcore\Targeting\Model\VisitorInfo;
use Pimcore\Targeting\Storage\Cookie\CookieSaveHandlerInterface;
use Pimcore\Targeting\Storage\Traits\TimestampsTrait;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
/**
* Stores data as cookie in the client's browser
*
* NOTE: using this storage without signed cookies is inherently insecure and can open vulnerabilities by injecting
* malicious data into the client cookie. Use only for testing!
*/
class CookieStorage implements TargetingStorageInterface
{
use TimestampsTrait;
const COOKIE_NAME_SESSION = '_pc_tss'; // tss = targeting session storage
const COOKIE_NAME_VISITOR = '_pc_tvs'; // tvs = targeting visitor storage
const STORAGE_KEY_CREATED_AT = '_c';
const STORAGE_KEY_UPDATED_AT = '_u';
/**
* @var CookieSaveHandlerInterface
*/
private $saveHandler;
/**
* @var RequestStack
*/
private $requestStack;
/**
* @var EventDispatcherInterface
*/
private $eventDispatcher;
/**
* @var array
*/
private $data = [];
/**
* @var bool
*/
private $changed = false;
/**
* @var array
*/
private $scopeCookieMapping = [
self::SCOPE_SESSION => self::COOKIE_NAME_SESSION,
self::SCOPE_VISITOR => self::COOKIE_NAME_VISITOR,
];
public function __construct(
CookieSaveHandlerInterface $saveHandler,
RequestStack $requestHelper,
EventDispatcherInterface $eventDispatcher
) {
$this->saveHandler = $saveHandler;
$this->requestStack = $requestHelper;
$this->eventDispatcher = $eventDispatcher;
}
public function all(VisitorInfo $visitorInfo, string $scope): array
{
$this->loadData($visitorInfo, $scope);
$blacklist = [
self::STORAGE_KEY_CREATED_AT,
self::STORAGE_KEY_UPDATED_AT,
self::STORAGE_KEY_META_ENTRY,
];
// filter internal values
$result = array_filter($this->data[$scope], function ($key) use ($blacklist) {
return !in_array($key, $blacklist, true);
}, ARRAY_FILTER_USE_KEY);
return $result;
}
public function has(VisitorInfo $visitorInfo, string $scope, string $name): bool
{
$this->loadData($visitorInfo, $scope);
return isset($this->data[$scope][$name]);
}
public function get(VisitorInfo $visitorInfo, string $scope, string $name, $default = null)
{
$this->loadData($visitorInfo, $scope);
if (isset($this->data[$scope][$name])) {
return $this->data[$scope][$name];
}
return $default;
}
public function set(VisitorInfo $visitorInfo, string $scope, string $name, $value)
{
$this->loadData($visitorInfo, $scope);
$this->data[$scope][$name] = $value;
$this->updateTimestamps($scope);
$this->addSaveListener($visitorInfo);
}
public function clear(VisitorInfo $visitorInfo, string $scope = null)
{
if (null === $scope) {
$this->data = null;
} else {
if (isset($this->data[$scope])) {
unset($this->data[$scope]);
}
}
$this->addSaveListener($visitorInfo);
}
public function migrateFromStorage(TargetingStorageInterface $storage, VisitorInfo $visitorInfo, string $scope)
{
$values = $storage->all($visitorInfo, $scope);
$this->loadData($visitorInfo, $scope);
foreach ($values as $name => $value) {
$this->data[$scope][$name] = $value;
}
// update created/updated at from storage
$this->updateTimestamps(
$scope,
$storage->getCreatedAt($visitorInfo, $scope),
$storage->getUpdatedAt($visitorInfo, $scope)
);
$this->addSaveListener($visitorInfo);
}
public function getCreatedAt(VisitorInfo $visitorInfo, string $scope)
{
$this->loadData($visitorInfo, $scope);
if (!isset($this->data[$scope][self::STORAGE_KEY_CREATED_AT])) {
return null;
}
return \DateTimeImmutable::createFromFormat('U', (string)$this->data[$scope][self::STORAGE_KEY_CREATED_AT]);
}
public function getUpdatedAt(VisitorInfo $visitorInfo, string $scope)
{
$this->loadData($visitorInfo, $scope);
if (!isset($this->data[$scope][self::STORAGE_KEY_UPDATED_AT])) {
return null;
}
return \DateTimeImmutable::createFromFormat('U', (string)$this->data[$scope][self::STORAGE_KEY_CREATED_AT]);
}
private function loadData(VisitorInfo $visitorInfo, string $scope): array
{
if (!isset($this->scopeCookieMapping[$scope])) {
throw new \InvalidArgumentException(sprintf('Scope "%s" is not supported', $scope));
}
if (isset($this->data[$scope]) && null !== $this->data[$scope]) {
return $this->data[$scope];
}
$request = $visitorInfo->getRequest();
$this->data[$scope] = $this->saveHandler->load($request, $scope, $this->scopeCookieMapping[$scope]);
return $this->data[$scope];
}
private function addSaveListener(VisitorInfo $visitorInfo)
{
if ($this->changed) {
return;
}
$this->changed = true;
// adds a response listener setting the storage cookie
$listener = function (FilterResponseEvent $event) use ($visitorInfo) {
// only handle event for the visitor info which triggered the save
if ($event->getRequest() !== $visitorInfo->getRequest()) {
return;
}
$response = $event->getResponse();
foreach (array_keys($this->scopeCookieMapping) as $scope) {
$this->saveHandler->save(
$response,
$scope,
$this->scopeCookieMapping[$scope],
$this->expiryFor($scope),
$this->data[$scope] ?? null
);
}
};
$this->eventDispatcher->addListener(KernelEvents::RESPONSE, $listener);
}
private function updateTimestamps(
string $scope,
\DateTimeInterface $createdAt = null,
\DateTimeInterface $updatedAt = null
) {
$timestamps = $this->normalizeTimestamps($createdAt, $updatedAt);
if (!isset($this->data[$scope][self::STORAGE_KEY_CREATED_AT])) {
$this->data[$scope][self::STORAGE_KEY_CREATED_AT] = $timestamps['createdAt']->getTimestamp();
$this->data[$scope][self::STORAGE_KEY_UPDATED_AT] = $timestamps['updatedAt']->getTimestamp();
} else {
$this->data[$scope][self::STORAGE_KEY_UPDATED_AT] = $timestamps['updatedAt']->getTimestamp();
}
}
protected function expiryFor(string $scope)
{
$expiry = 0;
if (self::SCOPE_VISITOR === $scope) {
$expiry = new \DateTime('+1 year');
} elseif (self::SCOPE_SESSION === $scope) {
$expiry = new \DateTime('+30 minutes');
}
return $expiry;
}
}