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<?php |
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/* For licensing terms, see /license.txt */ |
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declare(strict_types=1); |
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namespace Chamilo\CoreBundle\EventSubscriber; |
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use Chamilo\CoreBundle\Entity\Course; |
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use Chamilo\CoreBundle\Entity\TrackELogin; |
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use Chamilo\CoreBundle\Entity\User; |
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use Chamilo\CoreBundle\Settings\SettingsManager; |
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use DateTime; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Symfony\Bundle\SecurityBundle\Security; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpKernel\Event\RequestEvent; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface; |
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use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken; |
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/** |
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* Auto-login as an anonymous User entity ONLY within a public course context. |
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* Keeps the anonymous session alive while the user stays around the course |
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* (including auxiliary/XHR calls that may not carry cid), and clears it |
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* when navigating away (top-level document navigation), |
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* except for whitelisted paths still considered within the course context. |
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*/ |
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class AnonymousUserSubscriber implements EventSubscriberInterface |
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{ |
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private const FIREWALL_NAME = 'main'; |
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private const MAX_ANONYMOUS_USERS = 5; |
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// Session flags for the “active public course” context |
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private const S_ACTIVE_CID = '_active_public_cid'; |
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private const S_ACTIVE_PUBLIC = '_active_public_flag'; |
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private const S_ACTIVE_EXPIRES_AT = '_active_public_expires_at'; |
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private const S_SECURITY_TOKEN = '_security_'.self::FIREWALL_NAME; |
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// TTL (in seconds) for the “public course anonymous session” window |
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private const ACTIVE_TTL_SECONDS = 600; // 10 minutes |
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/** |
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* Whitelist: only preserve the anonymous context on the contact pages. |
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* NOTE: We intentionally avoid whitelisting all LP paths here to keep scope tight. |
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*/ |
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private const ANON_WHITELIST_PREFIXES = [ |
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'/contact', |
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'/main/lp/contact', |
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]; |
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public function __construct( |
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private readonly Security $security, |
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private readonly EntityManagerInterface $em, |
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private readonly SettingsManager $settings, |
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private readonly TokenStorageInterface $tokenStorage, |
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) {} |
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public static function getSubscribedEvents(): array |
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{ |
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return [ KernelEvents::REQUEST => 'onKernelRequest' ]; |
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} |
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public function onKernelRequest(RequestEvent $event): void |
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{ |
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if (!$event->isMainRequest()) { |
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return; |
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} |
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$request = $event->getRequest(); |
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$hasSession = $request->hasSession(); |
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$currentUser = $this->security->getUser(); |
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// In a public course scope? |
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$cid = $this->extractCid($request); |
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if ($cid > 0 && $this->isCoursePublic($cid)) { |
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// Renew active context (TTL) |
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if ($hasSession) { |
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$this->rememberActivePublicCid($request, (int) $cid); |
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} |
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// Real (non-anonymous) user → nothing to do |
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if ($currentUser instanceof User && $currentUser->getStatus() !== User::ANONYMOUS) { |
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return; |
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} |
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// Already an anonymous entity user → nothing to do |
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if ($currentUser instanceof User && $currentUser->getStatus() === User::ANONYMOUS) { |
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return; |
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} |
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// Login as anonymous entity user |
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$this->loginAnonymousEntity($request); |
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return; |
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} |
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// Not in a public course (or no cid on this request) |
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if (!$hasSession) { |
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return; |
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} |
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$session = $request->getSession(); |
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$activeCid = (int) ($session->get(self::S_ACTIVE_CID, 0)); |
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$isActive = (bool) ($session->get(self::S_ACTIVE_PUBLIC, false)); |
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$expiresAt = (int) ($session->get(self::S_ACTIVE_EXPIRES_AT, 0)); |
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$now = time(); |
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// There is an active context and it has not expired |
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if ($activeCid > 0 && $isActive && $expiresAt > $now) { |
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if ($this->isTopLevelNavigation($request)) { |
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// Top-level navigation: keep anonymous if whitelisted, otherwise clear |
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if ($this->isWhitelistedPath($request)) { |
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$this->rememberActivePublicCid($request, $activeCid); |
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return; |
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} |
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$this->clearAnon($request); |
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return; |
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} |
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// Not a top-level navigation (XHR/assets). |
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// If it's a whitelisted path, renew TTL to avoid accidental expiration. |
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if ($this->isWhitelistedPath($request)) { |
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$this->rememberActivePublicCid($request, $activeCid); |
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} |
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return; |
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} |
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// No active context (or expired): for an ANONYMOUS user, clear only on top-level navigation outside whitelist |
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if ($currentUser instanceof User && $currentUser->getStatus() === User::ANONYMOUS) { |
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if ($this->isTopLevelNavigation($request) && !$this->isWhitelistedPath($request)) { |
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$this->clearAnon($request); |
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} |
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} |
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} |
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/** |
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* Extract course id from: |
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* - Query ?cid=... |
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* - Path /course/{id}/... |
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* - Path /api/courses/{id} |
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*/ |
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private function extractCid(Request $request): int |
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{ |
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$cid = $request->query->get('cid'); |
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if (is_numeric($cid) && (int) $cid > 0) { |
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return (int) $cid; |
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} |
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$path = $request->getPathInfo(); |
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if (preg_match('#^/course/(\d+)(?:/|$)#', $path, $m)) { |
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return (int) $m[1]; |
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} |
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if (preg_match('#^/api/courses/(\d+)(?:/|$)#', $path, $m)) { |
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return (int) $m[1]; |
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} |
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return 0; |
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} |
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private function isCoursePublic(int $cid): bool |
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{ |
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/** @var Course|null $course */ |
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$course = $this->em->getRepository(Course::class)->find($cid); |
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return $course?->isPublic() ?? false; |
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} |
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/** Store/renew the active public course context in session. */ |
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private function rememberActivePublicCid(Request $request, int $cid): void |
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{ |
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$session = $request->getSession(); |
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$session->set(self::S_ACTIVE_CID, $cid); |
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$session->set(self::S_ACTIVE_PUBLIC, true); |
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$session->set(self::S_ACTIVE_EXPIRES_AT, time() + self::ACTIVE_TTL_SECONDS); |
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} |
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/** Log in as an anonymous entity User (create/reuse and set a UsernamePasswordToken). */ |
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private function loginAnonymousEntity(Request $request): void |
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{ |
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$userIp = $request->getClientIp() ?: '127.0.0.1'; |
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$anonId = $this->getOrCreateAnonymousUserId($userIp); |
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if (null === $anonId) { |
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return; |
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} |
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// Register login if it doesn't exist yet |
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$trackRepo = $this->em->getRepository(TrackELogin::class); |
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if (!$trackRepo->findOneBy(['userIp' => $userIp, 'user' => $anonId])) { |
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$trackLogin = (new TrackELogin()) |
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->setUserIp($userIp) |
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->setLoginDate(new DateTime()) |
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->setUser($this->em->getReference(User::class, $anonId)); |
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$this->em->persist($trackLogin); |
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$this->em->flush(); |
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} |
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// Set token |
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$userRepo = $this->em->getRepository(User::class); |
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$user = $userRepo->find($anonId); |
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if (!$user) { |
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return; |
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} |
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if ($request->hasSession()) { |
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$request->getSession()->set('_user', [ |
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'user_id' => $user->getId(), |
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'username' => $user->getUsername(), |
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'firstname' => $user->getFirstname(), |
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'lastname' => $user->getLastname(), |
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'firstName' => $user->getFirstname(), |
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'lastName' => $user->getLastname(), |
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'email' => $user->getEmail(), |
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'official_code' => $user->getOfficialCode(), |
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'picture_uri' => $user->getPictureUri(), |
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'status' => $user->getStatus(), |
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'active' => $user->isActive(), |
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'theme' => $user->getTheme(), |
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'language' => $user->getLocale(), |
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'created_at' => $user->getCreatedAt()->format('Y-m-d H:i:s'), |
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'expiration_date' => $user->getExpirationDate() ? $user->getExpirationDate()->format('Y-m-d H:i:s') : null, |
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'last_login' => $user->getLastLogin() ? $user->getLastLogin()->format('Y-m-d H:i:s') : null, |
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'is_anonymous' => true, |
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]); |
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} |
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$roles = $user->getRoles(); |
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$this->tokenStorage->setToken(new UsernamePasswordToken($user, self::FIREWALL_NAME, $roles)); |
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} |
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/** Clear token and session flags. */ |
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private function clearAnon(Request $request): void |
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{ |
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$this->tokenStorage->setToken(null); |
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if ($request->hasSession()) { |
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$session = $request->getSession(); |
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$session->remove('_user'); |
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$session->remove(self::S_SECURITY_TOKEN); |
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$session->remove(self::S_ACTIVE_CID); |
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$session->remove(self::S_ACTIVE_PUBLIC); |
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$session->remove(self::S_ACTIVE_EXPIRES_AT); |
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} |
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} |
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/** |
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* Consider it “top-level document navigation” if: |
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* - It is NOT an XHR (no `X-Requested-With: XMLHttpRequest`) |
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* - and browser sends `Sec-Fetch-Mode: navigate` and `Sec-Fetch-Dest: document` |
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* - or the Accept header includes `text/html` |
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*/ |
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private function isTopLevelNavigation(Request $request): bool |
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{ |
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if ($request->isXmlHttpRequest()) { |
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return false; |
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} |
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$mode = (string) $request->headers->get('Sec-Fetch-Mode', ''); |
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$dest = (string) $request->headers->get('Sec-Fetch-Dest', ''); |
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if ($mode === 'navigate' && $dest === 'document') { |
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return true; |
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} |
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$accept = (string) $request->headers->get('Accept', ''); |
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return str_contains($accept, 'text/html'); |
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} |
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/** |
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* Only contact-related paths preserve the anonymous context (tight scope). |
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* Examples matched: |
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* - /contact |
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* - /contact/ |
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* - /main/lp/contact |
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* - /main/lp/contact/... |
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*/ |
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private function isWhitelistedPath(Request $request): bool |
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{ |
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$path = $request->getPathInfo() ?? '/'; |
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foreach (self::ANON_WHITELIST_PREFIXES as $prefix) { |
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if ($path === $prefix || str_starts_with($path, $prefix.'/')) { |
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return true; |
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} |
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} |
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return false; |
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} |
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private function getOrCreateAnonymousUserId(string $userIp): ?int |
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{ |
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$userRepo = $this->em->getRepository(User::class); |
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$trackRepo = $this->em->getRepository(TrackELogin::class); |
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$autoProv = 'true' === $this->settings->getSetting('security.anonymous_autoprovisioning'); |
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if (!$autoProv) { |
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$u = $userRepo->findOneBy(['status' => User::ANONYMOUS], ['createdAt' => 'ASC']); |
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return $u ? $u->getId() : $this->createAnonymousUser()->getId(); |
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} |
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$max = (int) $this->settings->getSetting('admin.max_anonymous_users') ?: self::MAX_ANONYMOUS_USERS; |
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$list = $userRepo->findBy(['status' => User::ANONYMOUS], ['createdAt' => 'ASC']); |
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// Reuse by IP if there is a previous login record |
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foreach ($list as $u) { |
|
304
|
|
|
if ($trackRepo->findOneBy(['userIp' => $userIp, 'user' => $u])) { |
|
305
|
|
|
return $u->getId(); |
|
306
|
|
|
} |
|
307
|
|
|
} |
|
308
|
|
|
|
|
309
|
|
|
// Trim excess anonymous users |
|
310
|
|
|
while (\count($list) >= $max) { |
|
311
|
|
|
$oldest = array_shift($list); |
|
312
|
|
|
if ($oldest) { |
|
313
|
|
|
$this->em->remove($oldest); |
|
314
|
|
|
$this->em->flush(); |
|
315
|
|
|
} |
|
316
|
|
|
} |
|
317
|
|
|
|
|
318
|
|
|
return $this->createAnonymousUser()->getId(); |
|
319
|
|
|
} |
|
320
|
|
|
|
|
321
|
|
|
private function createAnonymousUser(): User |
|
322
|
|
|
{ |
|
323
|
|
|
$uniqueId = uniqid('anon_'); |
|
324
|
|
|
$email = $uniqueId.'@localhost.local'; |
|
325
|
|
|
|
|
326
|
|
|
if ('true' === $this->settings->getSetting('profile.login_is_email')) { |
|
327
|
|
|
$uniqueId = $email; |
|
328
|
|
|
} |
|
329
|
|
|
|
|
330
|
|
|
$anonymousUser = (new User()) |
|
331
|
|
|
->setSkipResourceNode(true) |
|
332
|
|
|
->setLastname('Doe') |
|
333
|
|
|
->setFirstname('Anonymous') |
|
334
|
|
|
->setUsername('anon_'.$uniqueId) |
|
335
|
|
|
->setStatus(User::ANONYMOUS) |
|
336
|
|
|
->setPlainPassword('anon') |
|
337
|
|
|
->setEmail($email) |
|
338
|
|
|
->setOfficialCode('anonymous') |
|
339
|
|
|
->setCreatorId(1) |
|
340
|
|
|
->addRole('ROLE_ANONYMOUS'); |
|
341
|
|
|
|
|
342
|
|
|
$this->em->persist($anonymousUser); |
|
343
|
|
|
$this->em->flush(); |
|
344
|
|
|
|
|
345
|
|
|
return $anonymousUser; |
|
346
|
|
|
} |
|
347
|
|
|
} |
|
348
|
|
|
|