TYPO3 v15 dev-main snapshot ()

.gitignore

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+/vendor/

Classes/Aspect/FileMetadataOverlayAspect.php

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+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Aspect;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Attribute\AsEventListener;
+use TYPO3\CMS\Core\Domain\Repository\PageRepository;
+use TYPO3\CMS\Core\Http\ApplicationType;
+use TYPO3\CMS\Core\Resource\Event\EnrichFileMetaDataEvent;
+
+/**
+ * This class deals with metadata translation as an event listener which reacts on an event MetadataRepository.
+ *
+ * The listener injects user permissions and mount points into the storage
+ * based on user or group configuration.
+ *
+ * @internal this is a concrete TYPO3 Event Listener and solely used for EXT:frontend and not part of TYPO3's Core API.
+ */
+final readonly class FileMetadataOverlayAspect
+{
+    public function __construct(
+        private PageRepository $pageRepository,
+    ) {}
+
+    /**
+     * Do translation and workspace overlay
+     */
+    #[AsEventListener('typo3-frontend/overlay')]
+    public function languageAndWorkspaceOverlay(EnrichFileMetaDataEvent $event): void
+    {
+        // Should only be in Frontend, but not in eID context
+        if (!($GLOBALS['TYPO3_REQUEST'] ?? null) instanceof ServerRequestInterface
+            || !ApplicationType::fromRequest($GLOBALS['TYPO3_REQUEST'])->isFrontend()
+            || isset($_REQUEST['eID'])
+        ) {
+            return;
+        }
+        $overlaidMetaData = $event->getRecord();
+        $this->pageRepository->versionOL('sys_file_metadata', $overlaidMetaData);
+        // getLanguageOverlay also calls versionOL() on the language overlaid record
+        $overlaidMetaData = $this->pageRepository->getLanguageOverlay('sys_file_metadata', $overlaidMetaData);
+        if ($overlaidMetaData !== null) {
+            $event->setRecord($overlaidMetaData);
+        }
+    }
+}

Classes/Aspect/PreviewAspect.php

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+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Aspect;
+
+use TYPO3\CMS\Core\Context\AspectInterface;
+use TYPO3\CMS\Core\Context\Exception\AspectPropertyNotFoundException;
+
+/**
+ * The aspect contains information on whether TYPO3 is currently in preview mode
+ *
+ * Allowed properties:
+ * - isPreview
+ */
+final readonly class PreviewAspect implements AspectInterface
+{
+    public function __construct(
+        private bool $isPreview = false
+    ) {}
+
+    public function isPreview(): bool
+    {
+        return $this->isPreview;
+    }
+
+    /**
+     * Get a property from aspect
+     *
+     * @throws AspectPropertyNotFoundException
+     */
+    public function get(string $name): bool
+    {
+        if ($name == 'isPreview') {
+            return $this->isPreview;
+        }
+        throw new AspectPropertyNotFoundException('Property "' . $name . '" not found in Aspect "' . __CLASS__ . '".', 1563375558);
+    }
+}

Classes/Authentication/FrontendBackendUserAuthentication.php

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+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Authentication;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
+
+/**
+ * TYPO3 backend user authentication in the Frontend rendering.
+ *
+ * @internal This class is a TYPO3 Backend implementation and is not considered part of the Public TYPO3 API.
+ */
+class FrontendBackendUserAuthentication extends BackendUserAuthentication
+{
+    /**
+     * Form field with login name.
+     *
+     * @var string
+     * @internal
+     */
+    protected $formfield_uname = '';
+
+    /**
+     * Form field with password.
+     *
+     * @var string
+     * @internal
+     */
+    protected $formfield_uident = '';
+
+    /**
+     * Formfield_status should be set to "". The value this->formfield_status is set to empty in order to
+     * disable login-attempts to the backend account through this script
+     *
+     * @var string
+     * @internal
+     */
+    protected $formfield_status = '';
+
+    /**
+     * Decides if the writelog() function is called at login and logout.
+     *
+     * @var bool
+     */
+    public $writeStdLog = false;
+
+    /**
+     * If the writelog() functions is called if a login-attempt has be tried without success.
+     *
+     * @var bool
+     */
+    public $writeAttemptLog = false;
+
+    /**
+     * Implementing the access checks that the TYPO3 CMS bootstrap script does before a user is ever logged in.
+     * Used in the frontend.
+     *
+     * @return bool Returns TRUE if access is OK
+     */
+    public function backendCheckLogin(?ServerRequestInterface $request = null)
+    {
+        if (empty($this->user['uid'])) {
+            return false;
+        }
+        // Check Hardcoded lock on BE
+        if ($GLOBALS['TYPO3_CONF_VARS']['BE']['adminOnly'] < 0) {
+            return false;
+        }
+        return $this->isUserAllowedToLogin();
+    }
+
+    /**
+     * If a user is in a workspace, but previews the live workspace (GET keyword "LIVE") even if the user
+     * has no editing permissions for this, it should still be visible, even though "be_users.workspace_perms" is set to "0".
+     * If this ain't true, users without the live permission cannot see the live page, only the preview of the workspace of the user.
+     */
+    protected function hasEditAccessToLiveWorkspace(): bool
+    {
+        return true;
+    }
+}

Classes/Authentication/FrontendUserAuthentication.php

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+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Authentication;
+
+use Psr\EventDispatcher\EventDispatcherInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Authentication\AbstractUserAuthentication;
+use TYPO3\CMS\Core\Authentication\GroupResolver;
+use TYPO3\CMS\Core\Authentication\LoginType;
+use TYPO3\CMS\Core\Context\UserAspect;
+use TYPO3\CMS\Core\Database\ConnectionPool;
+use TYPO3\CMS\Core\Http\SetCookieService;
+use TYPO3\CMS\Core\Session\UserSession;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Extension class for Front End User Authentication.
+ */
+class FrontendUserAuthentication extends AbstractUserAuthentication
+{
+    /**
+     * Login type, used for services.
+     * @var string
+     */
+    public $loginType = 'FE';
+
+    /**
+     * Form field with login-name
+     * @var string
+     * @internal
+     */
+    protected $formfield_uname = 'user';
+
+    /**
+     * Form field with password
+     * @var string
+     * @internal
+     */
+    protected $formfield_uident = 'pass';
+
+    /**
+     * Form field with status: *'login', 'logout'. If empty login is not verified.
+     * @var string
+     * @internal
+     */
+    protected $formfield_status = 'logintype';
+
+    /**
+     * form field with 0 or 1
+     * 1 = permanent login enabled
+     * 0 = session is valid for a browser session only
+     * @var string
+     * @internal
+     */
+    protected $formfield_permanent = 'permalogin';
+
+    /**
+     * Table in database with user data
+     * @var string
+     */
+    public $user_table = 'fe_users';
+
+    /**
+     * Column for login-name
+     * @var string
+     */
+    public $username_column = 'username';
+
+    /**
+     * Column for password
+     * @var string
+     */
+    public $userident_column = 'password';
+
+    /**
+     * Column for user-id
+     * @var string
+     */
+    public $userid_column = 'uid';
+
+    /**
+     * Column name for last login timestamp
+     * @var string
+     * @internal
+     */
+    protected $lastLogin_column = 'lastlogin';
+
+    /**
+     * @var string
+     */
+    public $usergroup_column = 'usergroup';
+
+    /**
+     * @var string
+     */
+    public $usergroup_table = 'fe_groups';
+
+    /**
+     * Enable field columns of user table
+     * @var array
+     */
+    public $enablecolumns = [
+        'deleted' => 'deleted',
+        'disabled' => 'disable',
+        'starttime' => 'starttime',
+        'endtime' => 'endtime',
+    ];
+
+    /**
+     * @var array
+     */
+    public $groupData = [
+        'title' => [],
+        'uid' => [],
+        'pid' => [],
+    ];
+
+    /**
+     * @var bool
+     */
+    protected $userData_change = false;
+
+    /**
+     * @var bool
+     * @internal
+     */
+    protected $is_permanent = false;
+
+    /**
+     * Will force the session cookie to be set every time (lifetime must be 0).
+     * @var bool
+     */
+    protected $forceSetCookie = false;
+
+    /**
+     * Will prevent the setting of the session cookie (takes precedence over forceSetCookie)
+     * Disable cookie by default, will be activated if saveSessionData() is called,
+     * a user is logging-in or an existing session is found
+     * @var bool
+     * @internal
+     */
+    protected $dontSetCookie = true;
+
+    public function __construct()
+    {
+        $this->name = self::getCookieName();
+        parent::__construct();
+        $this->checkPid = (bool)($GLOBALS['TYPO3_CONF_VARS']['FE']['checkFeUserPid'] ?? true);
+    }
+
+    /**
+     * Returns the configured cookie name
+     */
+    public static function getCookieName(): string
+    {
+        $configuredCookieName = trim((string)($GLOBALS['TYPO3_CONF_VARS']['FE']['cookieName'] ?? ''));
+        return $configuredCookieName !== '' ? $configuredCookieName : 'fe_typo_user';
+    }
+
+    /**
+     * Determine whether a session cookie needs to be set (lifetime=0)
+     *
+     * @return bool
+     * @internal
+     */
+    protected function isSetSessionCookie()
+    {
+        return SetCookieService::create($this->name, $this->loginType)->isSetSessionCookie($this->userSession, $this->forceSetCookie);
+    }
+
+    /**
+     * Determine whether a non-session cookie needs to be set (lifetime>0)
+     *
+     * @return bool
+     * @internal
+     */
+    protected function isRefreshTimeBasedCookie()
+    {
+        return SetCookieService::create($this->name, $this->loginType)->isRefreshTimeBasedCookie($this->userSession);
+    }
+
+    /**
+     * Returns an info array with Login/Logout data submitted by a form or params
+     *
+     * @return array
+     * @see AbstractUserAuthentication::getLoginFormData()
+     */
+    public function getLoginFormData(ServerRequestInterface $request)
+    {
+        $loginData = parent::getLoginFormData($request);
+        // Needed in order to fetch users which are already logged-in due to fetching from session
+        if (LoginType::tryFrom($loginData['status'] ?? '') !== LoginType::LOGIN) {
+            $this->checkPid_value = null;
+        }
+
+        if ($GLOBALS['TYPO3_CONF_VARS']['FE']['permalogin'] == 0 || $GLOBALS['TYPO3_CONF_VARS']['FE']['permalogin'] == 1) {
+            $isPermanent = $request->getParsedBody()[$this->formfield_permanent] ?? '';
+            if (strlen((string)$isPermanent) != 1) {
+                $isPermanent = $GLOBALS['TYPO3_CONF_VARS']['FE']['permalogin'];
+            } elseif (!$isPermanent) {
+                // To make sure the user gets a session cookie and doesn't keep a possibly existing time based cookie,
+                // we need to force setting the session cookie here
+                $this->forceSetCookie = true;
+            }
+            $isPermanent = (bool)$isPermanent;
+        } elseif ($GLOBALS['TYPO3_CONF_VARS']['FE']['permalogin'] == 2) {
+            $isPermanent = true;
+        } else {
+            $isPermanent = false;
+        }
+        $loginData['permanent'] = $isPermanent;
+        $this->is_permanent = $isPermanent;
+        return $loginData;
+    }
+
+    /**
+     * Creates a user session record and returns its values.
+     * However, as the FE user cookie is normally not set, this has to be done
+     * before the parent class is doing the rest.
+     *
+     * @param array $tempuser User data array
+     * @return UserSession The session data for the newly created session.
+     */
+    public function createUserSession(array $tempuser): UserSession
+    {
+        // At this point we do not know if we need to set a session or a permanent cookie
+        // So we force the cookie to be set after authentication took place, which will
+        // then call setSessionCookie(), which will set a cookie with correct settings.
+        $this->dontSetCookie = false;
+        $tempUserId = (int)($tempuser[$this->userid_column] ?? 0);
+        $session = $this->userSessionManager->elevateToFixatedUserSession(
+            $this->userSession,
+            $tempUserId,
+            (bool)$this->is_permanent
+        );
+        // Updating lastLogin_column carrying information about last login.
+        $this->updateLoginTimestamp($tempUserId);
+        return $session;
+    }
+
+    /**
+     * Will select all fe_groups records that the current fe_user is member of.
+     *
+     * @param ServerRequestInterface $request
+     */
+    public function fetchGroupData(ServerRequestInterface $request)
+    {
+        $this->userGroups = [];
+        $this->groupData = [
+            'title' => [],
+            'uid' => [],
+            'pid' => [],
+        ];
+
+        $groupDataArr = [];
+        if (is_array($this->user)) {
+            $this->logger->debug('Get usergroups for user', [
+                $this->userid_column => $this->getUserId(),
+                $this->username_column => $this->getUserName(),
+            ]);
+            $groupDataArr = GeneralUtility::makeInstance(GroupResolver::class)->resolveGroupsForUser($this->user, $this->usergroup_table);
+        }
+        // Fire an event for any kind of user (even when no specific user is here, using hideLogin feature)
+        $dispatcher = GeneralUtility::makeInstance(EventDispatcherInterface::class);
+        $event = $dispatcher->dispatch(new ModifyResolvedFrontendGroupsEvent($this, $groupDataArr, $request));
+        $groupDataArr = $event->getGroups();
+
+        if (empty($groupDataArr)) {
+            $this->logger->debug('No usergroups found');
+        } else {
+            $this->logger->debug('{count} usergroup records found', ['count' => count($groupDataArr)]);
+        }
+        foreach ($groupDataArr as $groupData) {
+            $groupId = (int)$groupData['uid'];
+            $this->groupData['title'][$groupId] = $groupData['title'] ?? '';
+            $this->groupData['uid'][$groupId] = $groupData['uid'] ?? 0;
+            $this->groupData['pid'][$groupId] = $groupData['pid'] ?? 0;
+            $this->userGroups[$groupId] = $groupData;
+        }
+        // Sort information
+        ksort($this->groupData['title']);
+        ksort($this->groupData['uid']);
+        ksort($this->groupData['pid']);
+    }
+
+    /**
+     * Initializes the front-end user groups for the context API,
+     * based on the user groups and the logged-in state.
+     *
+     * @param bool $respectUserGroups used to disable the inclusion of the users' groups
+     */
+    public function createUserAspect(bool $respectUserGroups = true): UserAspect
+    {
+        $userGroups = [0];
+        $isUserAndGroupSet = is_array($this->user) && !empty($this->userGroups);
+        if ($isUserAndGroupSet) {
+            // group -2 is not an existing group, but denotes a 'default' group when a user IS logged in.
+            // This is used to let elements be shown for all logged in users!
+            $userGroups[] = -2;
+            $groupsFromUserRecord = array_keys($this->userGroups);
+        } else {
+            // group -1 is not an existing group, but denotes a 'default' group when not logged in.
+            // This is used to let elements be hidden, when a user is logged in!
+            $userGroups[] = -1;
+            if ($respectUserGroups) {
+                // For cases where logins are not banned from a branch usergroups can be set based on IP masks so we should add the usergroups uids.
+                $groupsFromUserRecord = array_keys($this->userGroups);
+            } else {
+                // Set to blank since we will NOT risk any groups being set when no logins are allowed!
+                $groupsFromUserRecord = [];
+            }
+        }
+        // Make unique and sort the groups
+        $groupsFromUserRecord = array_unique($groupsFromUserRecord);
+        if ($respectUserGroups && !empty($groupsFromUserRecord)) {
+            sort($groupsFromUserRecord);
+            $userGroups = array_merge($userGroups, $groupsFromUserRecord);
+        }
+
+        // For every 60 seconds the is_online timestamp for a logged-in user is updated
+        if ($isUserAndGroupSet) {
+            $this->updateOnlineTimestamp();
+        }
+
+        $this->logger->debug('Valid frontend usergroups: {groups}', ['groups' => implode(',', $userGroups)]);
+        return new UserAspect($this, $userGroups);
+    }
+
+    /*****************************************
+     *
+     * Session data management functions
+     *
+     ****************************************/
+    /**
+     * Will write UC and session data.
+     * If the flag $this->userData_change has been set, the function ->writeUC is called (which will save persistent user session data)
+     *
+     * @see getKey()
+     * @see setKey()
+     */
+    public function storeSessionData()
+    {
+        // Saves UC and SesData if changed.
+        if ($this->userData_change) {
+            $this->writeUC();
+        }
+
+        if ($this->userSession->dataWasUpdated()) {
+            if (!$this->userSession->hasData()) {
+                // Remove session-data
+                $this->removeSessionData();
+                // Remove cookie if not logged in as the session data is removed as well
+                if (empty($this->user['uid']) && $this->isCookieSet()) {
+                    $this->removeCookie();
+                }
+            } elseif (!$this->userSessionManager->isSessionPersisted($this->userSession)) {
+                // Create a new session entry in the backend
+                $this->userSession = $this->userSessionManager->fixateAnonymousSession($this->userSession, (bool)$this->is_permanent);
+                // Now set the cookie (= fix the session)
+                $this->setSessionCookie();
+            } else {
+                // Update session data of an already fixated session
+                $this->userSession = $this->userSessionManager->updateSession($this->userSession);
+            }
+        }
+    }
+
+    /**
+     * Removes data of the current session.
+     */
+    public function removeSessionData()
+    {
+        $this->userSession->overrideData([]);
+        if ($this->userSessionManager->isSessionPersisted($this->userSession)) {
+            // Remove session record if $this->user is empty or in case the session is anonymous
+            if (empty($this->user) || $this->userSession->isAnonymous()) {
+                $this->userSessionManager->removeSession($this->userSession);
+            } else {
+                $this->userSession = $this->userSessionManager->updateSession($this->userSession);
+            }
+        }
+    }
+
+    /**
+     * Regenerate the session ID and transfer the session to new ID
+     * Call this method whenever a user proceeds to a higher authorization level
+     * e.g. when an anonymous session is now authenticated.
+     * Forces cookie to be set
+     */
+    protected function regenerateSessionId()
+    {
+        parent::regenerateSessionId();
+        // We force the cookie to be set later in the authentication process
+        $this->dontSetCookie = false;
+    }
+
+    /**
+     * Returns session data for the fe_user; Either persistent data following the fe_users uid/profile (requires login)
+     * or current-session based (not available when browse is closed, but does not require login)
+     *
+     * @param string $type Session data type; Either "user" (persistent, bound to fe_users profile) or "ses" (temporary, bound to current session cookie)
+     * @param string $key Key from the data array to return; The session data (in either case) is an array ($this->uc / $this->sessionData) and this value determines which key to return the value for.
+     * @return mixed Returns whatever value there was in the array for the key, $key
+     * @see setKey()
+     */
+    public function getKey($type, $key)
+    {
+        if (!$key) {
+            return null;
+        }
+        $value = null;
+        switch ($type) {
+            case 'user':
+                $value = $this->uc[$key] ?? null;
+                break;
+            case 'ses':
+                $value = $this->getSessionData($key);
+                break;
+        }
+        return $value;
+    }
+
+    /**
+     * Saves session data, either persistent or bound to current session cookie. Please see getKey() for more details.
+     * When a value is set the flag $this->userData_change will be set so that the final call to ->storeSessionData() will know if a change has occurred and needs to be saved to the database.
+     * Notice: Simply calling this function will not save the data to the database! The actual saving is done in storeSessionData() which is called as some of the last things in \TYPO3\CMS\Frontend\Http\RequestHandler.
+     *
+     * @param string $type Session data type; Either "user" (persistent, bound to fe_users profile) or "ses" (temporary, bound to current session cookie)
+     * @param string $key Key from the data array to store incoming data in; The session data (in either case) is an array ($this->uc / $this->sessionData) and this value determines in which key the $data value will be stored.
+     * @param mixed $data The data value to store in $key
+     * @see setKey()
+     * @see storeSessionData()
+     */
+    public function setKey($type, $key, $data)
+    {
+        if (!$key) {
+            return;
+        }
+        switch ($type) {
+            case 'user':
+                if ($this->user['uid'] ?? 0) {
+                    if ($data === null) {
+                        unset($this->uc[$key]);
+                    } else {
+                        $this->uc[$key] = $data;
+                    }
+                    $this->userData_change = true;
+                }
+                break;
+            case 'ses':
+                $this->setSessionData($key, $data);
+                break;
+        }
+    }
+
+    /**
+     * Saves the tokens so that they can be used by a later incarnation of this class.
+     *
+     * @param string $key
+     * @param mixed $data
+     */
+    public function setAndSaveSessionData($key, $data)
+    {
+        $this->setSessionData($key, $data);
+        $this->storeSessionData();
+    }
+
+    /**
+     * Update the field "is_online" every 60 seconds of a logged-in user
+     *
+     * @internal
+     */
+    public function updateOnlineTimestamp()
+    {
+        if (!is_array($this->user)
+            || !($this->user['uid'] ?? 0)
+            || $this->user['uid'] === PHP_INT_MAX // Simulated preview user (flagged with PHP_INT_MAX uid)
+            || ($this->user['is_online'] ?? 0) >= $GLOBALS['EXEC_TIME'] - 60) {
+            return;
+        }
+        $dbConnection = GeneralUtility::makeInstance(ConnectionPool::class)->getConnectionForTable($this->user_table);
+        $dbConnection->update(
+            $this->user_table,
+            ['is_online' => $GLOBALS['EXEC_TIME']],
+            ['uid' => (int)$this->user['uid']]
+        );
+        $this->user['is_online'] = $GLOBALS['EXEC_TIME'];
+    }
+}

Classes/Authentication/ModifyResolvedFrontendGroupsEvent.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Authentication;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * Event listener to allow to add custom Frontend Groups to a (frontend) request
+ * regardless if a user is logged in or not.
+ */
+final class ModifyResolvedFrontendGroupsEvent
+{
+    public function __construct(
+        private readonly FrontendUserAuthentication $user,
+        private array $groups,
+        private readonly ServerRequestInterface $request
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function getUser(): FrontendUserAuthentication
+    {
+        return $this->user;
+    }
+
+    public function getGroups(): array
+    {
+        return $this->groups;
+    }
+
+    public function setGroups(array $groups): void
+    {
+        $this->groups = $groups;
+    }
+}

Classes/Cache/CacheInstruction.php

@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Cache;
+
+/**
+ * This class contains cache details and is created or updated in middlewares of the
+ * Frontend rendering chain and added as Request attribute "frontend.cache.instruction".
+ *
+ * Its main goal is to *disable* the Frontend cache mechanisms in various scenarios, for
+ * instance when the admin panel is used to simulate access times, or when security
+ * mechanisms like cHash evaluation do not match.
+ */
+final class CacheInstruction
+{
+    private bool $allowCaching = true;
+    private array $disabledCacheReasons = [];
+
+    /**
+     * Instruct the core Frontend rendering to disable Frontend caching. Extensions with
+     * custom middlewares may set this.
+     *
+     * Note multiple cache layers are involved during Frontend rendering: For instance multiple
+     * TypoScript layers, the page cache and potentially others. Those caches are read from and
+     * written to within various middlewares. Depending on the position of a call to this method
+     * within the middleware stack, it can happen that some or all caches have already been
+     * read of written.
+     *
+     * Extensions that use this method should keep an eye on their middleware positions in the
+     * stack to estimate the performance impact of this call. It's of course best to not use
+     * the 'disable cache' mechanic at all, but to handle caching properly in extensions.
+     */
+    public function disableCache(string $reason): void
+    {
+        if (empty($reason)) {
+            throw new \RuntimeException(
+                'A non-empty reason must be given to disable cache. At least mention the extension name that triggers it.',
+                1701528694
+            );
+        }
+        $this->allowCaching = false;
+        $this->disabledCacheReasons[] = $reason;
+    }
+
+    public function isCachingAllowed(): bool
+    {
+        return $this->allowCaching;
+    }
+
+    /**
+     * @internal Typically only consumed by extensions like EXT:adminpanel
+     */
+    public function getDisabledCacheReasons(): array
+    {
+        return $this->disabledCacheReasons;
+    }
+}

Classes/Cache/CacheLifetimeCalculator.php

@@ -0,0 +1,272 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Cache;
+
+use Psr\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\DependencyInjection\Attribute\Autoconfigure;
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface;
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Database\Connection;
+use TYPO3\CMS\Core\Database\ConnectionPool;
+use TYPO3\CMS\Core\Database\Query\Restriction\EndTimeRestriction;
+use TYPO3\CMS\Core\Database\Query\Restriction\StartTimeRestriction;
+use TYPO3\CMS\Core\Schema\Capability\TcaSchemaCapability;
+use TYPO3\CMS\Core\Schema\TcaSchemaFactory;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\Event\ModifyCacheLifetimeForPageEvent;
+use TYPO3\CMS\Frontend\Event\ModifyCacheLifetimeForRowEvent;
+
+/**
+ * Calculates the max lifetime the given page should be stored in TYPO3's page cache.
+ *
+ * The "lifetime" is the number of seconds from the current time, it is not a full time/timestamp
+ * Example: If the lifetime is "3600" (=1h), the page will be cached for 1h.
+ *
+ * @internal This class is not part of the TYPO3 Core API
+ */
+#[Autoconfigure(public: true)]
+class CacheLifetimeCalculator
+{
+    protected const defaultCacheTimeout = 365 * 86400; // 1 year
+
+    public function __construct(
+        #[Autowire(service: 'cache.runtime')]
+        protected readonly FrontendInterface $runtimeCache,
+        protected readonly EventDispatcherInterface $eventDispatcher,
+        protected readonly ConnectionPool $connectionPool,
+        protected readonly TcaSchemaFactory $tcaSchemaFactory,
+    ) {}
+
+    /**
+     * Get the cache lifetime in seconds for the given record.
+     */
+    public function calculateLifetimeForRow(string $tableName, array $record, int $defaultCacheTimeoutInSeconds = 0): int
+    {
+        $cachedCacheLifetimeIdentifier = sprintf('calculateLifetimeForRow_%s_%d', $tableName, ($record['uid'] ?? 0));
+        $cachedCacheLifetime = $this->runtimeCache->get($cachedCacheLifetimeIdentifier);
+        if ($cachedCacheLifetime !== false) {
+            return (int)$cachedCacheLifetime;
+        }
+
+        $cacheTimeout = $defaultCacheTimeoutInSeconds ?: self::defaultCacheTimeout;
+
+        if ($this->tcaSchemaFactory->has($tableName)) {
+            $schema = $this->tcaSchemaFactory->get($tableName);
+            // If the record has a starttime or endtime, we have to adjust the cache timeout
+            foreach ([TcaSchemaCapability::RestrictionStartTime, TcaSchemaCapability::RestrictionEndTime] as $capability) {
+                if (!$schema->hasCapability($capability)) {
+                    continue;
+                }
+                $timeField = $schema->getCapability($capability)->getFieldName();
+                if (array_key_exists($timeField, $record) && $record[$timeField] > 0 && ((int)$record[$timeField] - $GLOBALS['ACCESS_TIME']) > 0) {
+                    $cacheTimeout = min($cacheTimeout, (int)$record[$timeField] - $GLOBALS['ACCESS_TIME']);
+                }
+            }
+        }
+
+        // Get the time, rounded to the minute (do not pollute MySQL cache!)
+        // It is ok that we do not take seconds into account here because this
+        // value will be subtracted later. So we never get the time "before"
+        // the cache change.
+        $currentTimestamp = (int)$GLOBALS['ACCESS_TIME'];
+        $cacheTimeout = min($currentTimestamp, $cacheTimeout);
+
+        $event = new ModifyCacheLifetimeForRowEvent(
+            $cacheTimeout,
+            $tableName,
+            $record
+        );
+        $event = $this->eventDispatcher->dispatch($event);
+        $cacheTimeout = $event->cacheLifetime;
+        $this->runtimeCache->set($cachedCacheLifetimeIdentifier, (string)$cacheTimeout);
+        return $cacheTimeout;
+    }
+
+    /**
+     * Get the cache lifetime in seconds for the given page.
+     */
+    public function calculateLifetimeForPage(int $pageId, array $pageRecord, array $renderingInstructions, Context $context): int
+    {
+        $cachedCacheLifetimeIdentifier = 'cacheLifeTimeForPage_' . $pageId;
+        $cachedCacheLifetime = $this->runtimeCache->get($cachedCacheLifetimeIdentifier);
+        if ($cachedCacheLifetime !== false) {
+            return (int)$cachedCacheLifetime;
+        }
+        if ($pageRecord['cache_timeout'] ?? false) {
+            // Cache period was set for the page:
+            $cacheTimeout = (int)$pageRecord['cache_timeout'];
+        } else {
+            // Cache period was set via TypoScript "config.cache_period", otherwise it's the default of 24 hours
+            $cacheTimeout = (int)($renderingInstructions['cache_period'] ?? self::defaultCacheTimeout);
+        }
+
+        $cacheTimeout = $this->calculateLifetimeForRow('pages', $pageRecord, $cacheTimeout);
+
+        // Calculate the timeout time for records on the page and adjust cache timeout if necessary
+        // Get the configuration
+        $tablesToConsider = $this->getCurrentPageCacheConfiguration($pageId, $renderingInstructions);
+
+        // Get the time, rounded to the minute (do not pollute MySQL cache!)
+        // It is ok that we do not take seconds into account here because this
+        // value will be subtracted later. So we never get the time "before"
+        // the cache change.
+        $currentTimestamp = (int)$GLOBALS['ACCESS_TIME'];
+        $cacheTimeout = min($this->calculatePageCacheLifetime($tablesToConsider, $currentTimestamp), $cacheTimeout);
+
+        $event = new ModifyCacheLifetimeForPageEvent(
+            $cacheTimeout,
+            $pageId,
+            $pageRecord,
+            $renderingInstructions,
+            $context
+        );
+        $event = $this->eventDispatcher->dispatch($event);
+        $cacheTimeout = $event->getCacheLifetime();
+        $this->runtimeCache->set($cachedCacheLifetimeIdentifier, (string)$cacheTimeout);
+        return $cacheTimeout;
+    }
+
+    /**
+     * Calculates page cache timeout according to the records with starttime/endtime on the page.
+     *
+     * @return int Page cache timeout or PHP_INT_MAX if the timeout cannot be determined
+     */
+    protected function calculatePageCacheLifetime(array $tablesToConsider, int $currentTimestamp): int
+    {
+        $result = PHP_INT_MAX;
+        // Find timeout by checking every table
+        foreach ($tablesToConsider as $tableDef) {
+            $result = min($result, $this->getFirstTimeValueForRecord($tableDef, $currentTimestamp));
+        }
+        // We return + 1 second just to ensure that cache is definitely regenerated
+        return $result === PHP_INT_MAX ? PHP_INT_MAX : $result - $currentTimestamp + 1;
+    }
+
+    /**
+     * Obtains a list of table/pid pairs to consider for page caching.
+     *
+     * TS configuration looks like this:
+     *
+     * The cache lifetime of all pages takes starttime and endtime of news records of page 14 into account:
+     * config.cache.all = tt_news:14
+     *
+     * The cache lifetime of the current page allows to take records (e.g. fe_users) into account:
+     * config.cache.all = fe_users:current
+     *
+     * The cache lifetime of page 42 takes starttime and endtime of news records of page 15 and addresses of page 16 into account:
+     * config.cache.42 = tt_news:15,tt_address:16
+     *
+     * @return array Array of 'tablename:pid' pairs. There is at least a current page id in the array
+     * @see calculatePageCacheLifetime()
+     */
+    protected function getCurrentPageCacheConfiguration(int $currentPageId, array $renderingInstructions): array
+    {
+        $result = ['tt_content:' . $currentPageId];
+        if (isset($renderingInstructions['cache.'][$currentPageId])) {
+            $result = array_merge($result, GeneralUtility::trimExplode(',', str_replace(':current', ':' . $currentPageId, $renderingInstructions['cache.'][$currentPageId])));
+        }
+        if (isset($renderingInstructions['cache.']['all'])) {
+            $result = array_merge($result, GeneralUtility::trimExplode(',', str_replace(':current', ':' . $currentPageId, $renderingInstructions['cache.']['all'])));
+        }
+        return array_unique($result);
+    }
+
+    /**
+     * Find the minimum starttime or endtime value in the table and pid that is greater than the current time.
+     *
+     * @param string $tableDef Table definition (format tablename:pid)
+     * @param int $currentTimestamp the UNIX timestamp of the current time
+     * @throws \InvalidArgumentException
+     * @return int Value of the next start/stop time or PHP_INT_MAX if not found
+     * @see calculatePageCacheLifetime()
+     */
+    protected function getFirstTimeValueForRecord(string $tableDef, int $currentTimestamp): int
+    {
+        $result = PHP_INT_MAX;
+        [$tableName, $pid] = GeneralUtility::trimExplode(':', $tableDef);
+        if (empty($tableName) || !isset($pid)) {
+            throw new \InvalidArgumentException('Unexpected value for parameter $tableDef. Expected <tablename>:<pid>, got \'' . htmlspecialchars($tableDef) . '\'.', 1307190365);
+        }
+
+        $queryBuilder = $this->connectionPool->getQueryBuilderForTable($tableName);
+        $queryBuilder->getRestrictions()
+            ->removeByType(StartTimeRestriction::class)
+            ->removeByType(EndTimeRestriction::class);
+        $timeFields = [];
+        $timeConditions = $queryBuilder->expr()->or();
+        if ($this->tcaSchemaFactory->has($tableName)) {
+            $schema = $this->tcaSchemaFactory->get($tableName);
+            // If the record has a starttime or endtime, we have to adjust the cache timeout
+            foreach ([TcaSchemaCapability::RestrictionStartTime, TcaSchemaCapability::RestrictionEndTime] as $capability) {
+                if (!$schema->hasCapability($capability)) {
+                    continue;
+                }
+                $timeField = $schema->getCapability($capability)->getFieldName();
+                $queryBuilder->addSelectLiteral(
+                    'MIN('
+                    . 'CASE WHEN '
+                    . $queryBuilder->expr()->lte(
+                        $timeField,
+                        $queryBuilder->createNamedParameter($currentTimestamp, Connection::PARAM_INT)
+                    )
+                    . ' THEN NULL ELSE ' . $queryBuilder->quoteIdentifier($timeField) . ' END'
+                    . ') AS ' . $queryBuilder->quoteIdentifier($timeField)
+                );
+                $timeConditions = $timeConditions->with(
+                    $queryBuilder->expr()->gt(
+                        $timeField,
+                        $queryBuilder->createNamedParameter($currentTimestamp, Connection::PARAM_INT)
+                    )
+                );
+                $timeFields[] = $timeField;
+            }
+        }
+
+        // if starttime or endtime are defined, evaluate them
+        if ($timeFields !== []) {
+            // find the timestamp, when the current page's content changes the next time
+            $row = $queryBuilder
+                ->from($tableName)
+                ->where(
+                    $queryBuilder->expr()->eq(
+                        'pid',
+                        $queryBuilder->createNamedParameter($pid, Connection::PARAM_INT)
+                    ),
+                    $timeConditions
+                )
+                ->executeQuery()
+                ->fetchAssociative();
+
+            if ($row) {
+                foreach ($timeFields as $timeField) {
+                    // if a MIN value is found, take it into account for the
+                    // cache lifetime we have to filter out start/endtimes < $currentTimestamp,
+                    // as the SQL query also returns rows with starttime < $currentTimestamp
+                    // and endtime > $currentTimestamp (and using a starttime from the past
+                    // would be wrong)
+                    if ($row[$timeField] !== null && (int)$row[$timeField] > $currentTimestamp) {
+                        $result = min($result, (int)$row[$timeField]);
+                    }
+                }
+            }
+        }
+
+        return $result;
+    }
+}

Classes/Cache/MetaDataState.php

@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Cache;
+
+use Symfony\Component\DependencyInjection\Attribute\Autoconfigure;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\DirectiveHashCollection;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\ModelService;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\PolicyRegistry;
+
+/**
+ * Meta-data class handling cacheable states for generic frontend functionality.
+ *
+ * @internal
+ */
+#[Autoconfigure(public: true)]
+readonly class MetaDataState
+{
+    public function __construct(
+        private ModelService $modelService,
+        private PolicyRegistry $policyRegistry,
+        private DirectiveHashCollection $directiveHashCollection,
+    ) {}
+
+    public function getState(): array
+    {
+        return [
+            'PolicyRegistry::$mutationCollections' => json_encode($this->policyRegistry->getMutationCollections()),
+            'HashCollection' => json_encode($this->directiveHashCollection),
+        ];
+    }
+
+    public function updateState(array $state): void
+    {
+        foreach ($state as $name => $value) {
+            switch ($name) {
+                case 'PolicyRegistry::$mutationCollections':
+                    $this->updatePolicyRegistryMutationCollections($value);
+                    break;
+                case 'HashCollection':
+                    $this->updateHashCollection($value);
+                    break;
+            }
+        }
+    }
+
+    private function updatePolicyRegistryMutationCollections(mixed $value): void
+    {
+        $array = $this->decodeJsonString($value);
+        if (is_array($array)) {
+            $this->policyRegistry->setMutationsCollections(
+                ...array_map($this->modelService->buildMutationCollectionFromArray(...), $array)
+            );
+        }
+    }
+
+    private function updateHashCollection(mixed $value): void
+    {
+        $array = $this->decodeJsonString($value);
+        if (is_array($array)) {
+            $this->directiveHashCollection->updateFromJson($array);
+        }
+    }
+
+    private function decodeJsonString(mixed $value): ?array
+    {
+        if (!is_string($value) || $value === '') {
+            return null;
+        }
+        try {
+            $array = json_decode($value, true, 512, \JSON_THROW_ON_ERROR);
+        } catch (\JsonException) {
+            return null;
+        }
+        return is_array($array) ? $array : null;
+    }
+}

Classes/Cache/NonceValueSubstitution.php

@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Cache;
+
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\ConsumableNonce;
+
+/**
+ * Substitutes a cached nonce value with the actual nonce value that
+ * is valid for the current request, and which is issued as HTTP CSP
+ * header during the frontend rendering process.
+ */
+class NonceValueSubstitution
+{
+    /**
+     * @param array{content: string, nonce: string} $context
+     */
+    public function substituteNonce(array $context): ?string
+    {
+        $currentNonce = $GLOBALS['TYPO3_REQUEST']?->getAttribute('nonce');
+        if (!$currentNonce instanceof ConsumableNonce
+            || empty($context['content'])
+            || empty($context['nonce'])
+            || $currentNonce->value === $context['nonce']
+            || !str_contains($context['content'], $context['nonce'])
+        ) {
+            return null;
+        }
+        return str_replace($context['nonce'], $currentNonce->consumeInline(self::class), $context['content']);
+    }
+}

Classes/Category/Collection/CategoryCollection.php

@@ -0,0 +1,191 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Category\Collection;
+
+use TYPO3\CMS\Core\Category\Collection\CategoryCollection as CoreCategoryCollection;
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Database\Connection;
+use TYPO3\CMS\Core\Database\ConnectionPool;
+use TYPO3\CMS\Core\Database\Query\Restriction\FrontendRestrictionContainer;
+use TYPO3\CMS\Core\Domain\Repository\PageRepository;
+use TYPO3\CMS\Core\Schema\Capability\TcaSchemaCapability;
+use TYPO3\CMS\Core\Schema\TcaSchemaFactory;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Extend category collection for the frontend, to collect related records
+ * while respecting language, enable fields, etc.
+ *
+ * @internal this is a concrete TYPO3 hook implementation and solely used for EXT:frontend and not part of TYPO3's Core API.
+ */
+class CategoryCollection extends CoreCategoryCollection
+{
+    /**
+     * Creates a new collection objects and reconstitutes the
+     * given database record to the new object.
+     *
+     * Overrides the parent method to create a *frontend* category collection.
+     *
+     * @param array $collectionRecord Database record
+     * @param bool $fillItems Populates the entries directly on load, might be bad for memory on large collections
+     * @return CategoryCollection
+     */
+    public static function create(array $collectionRecord, $fillItems = false)
+    {
+        $collection = GeneralUtility::makeInstance(
+            __CLASS__,
+            $collectionRecord['table_name'],
+            $collectionRecord['field_name']
+        );
+        $collection->fromArray($collectionRecord);
+        if ($fillItems) {
+            $collection->loadContents();
+        }
+        return $collection;
+    }
+
+    /**
+     * Loads the collection with the given id from persistence
+     * For memory reasons, only data for the collection itself is loaded by default.
+     * Entries can be loaded on first access or straightaway using the $fillItems flag.
+     *
+     * Overrides the parent method because of the call to "self::create()" which otherwise calls up
+     * \TYPO3\CMS\Core\Category\Collection\CategoryCollection
+     *
+     * @param int $id Id of database record to be loaded
+     * @param bool $fillItems Populates the entries directly on load, might be bad for memory on large collections
+     * @param string $tableName the table name
+     * @param string $fieldName Name of the categories relation field
+     * @return CategoryCollection
+     */
+    public static function load($id, $fillItems = false, $tableName = '', $fieldName = '')
+    {
+        $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
+            ->getQueryBuilderForTable(static::$storageTableName);
+        $queryBuilder->setRestrictions(GeneralUtility::makeInstance(FrontendRestrictionContainer::class));
+
+        $collectionRecord = $queryBuilder
+            ->select('*')
+            ->from(static::$storageTableName)
+            ->where(
+                $queryBuilder->expr()->eq(
+                    'uid',
+                    $queryBuilder->createNamedParameter($id, Connection::PARAM_INT)
+                )
+            )
+            ->setMaxResults(1)
+            ->executeQuery()
+            ->fetchAssociative();
+
+        if ($collectionRecord === false) {
+            return GeneralUtility::makeInstance(
+                self::class,
+                $tableName,
+                $fieldName
+            );
+        }
+
+        $collectionRecord['table_name'] = $tableName;
+        $collectionRecord['field_name'] = $fieldName;
+
+        return self::create($collectionRecord, $fillItems);
+    }
+
+    /**
+     * Gets the collected records in this collection, by
+     * looking up the MM relations of this record to the
+     * table name defined in the local field 'table_name'.
+     *
+     * Overrides its parent method to implement usage of language,
+     * enable fields, etc. Also performs overlays.
+     *
+     * @return array
+     */
+    protected function getCollectedRecords()
+    {
+        $relatedRecords = [];
+
+        $queryBuilder = $this->getCollectedRecordsQueryBuilder();
+        $queryBuilder->setRestrictions(GeneralUtility::makeInstance(FrontendRestrictionContainer::class));
+        $context = GeneralUtility::makeInstance(Context::class);
+        $pageRepository = GeneralUtility::makeInstance(PageRepository::class, $context);
+        $languageId = $context->getPropertyFromAspect('language', 'contentId', 0);
+        $table = $this->getItemTableName();
+
+        // If language handling is defined for item table, add language condition
+        $schemaFactory = GeneralUtility::makeInstance(TcaSchemaFactory::class);
+        if ($schemaFactory->has($table) && $schemaFactory->get($table)->isLanguageAware()) {
+            $schema = $schemaFactory->get($table);
+            $languageCapability = $schema->getCapability(TcaSchemaCapability::Language);
+            // Consider default or "all" language
+            $languageField = sprintf(
+                '%s.%s',
+                $table,
+                $languageCapability->getLanguageField()->getName()
+            );
+
+            $languageConstraint = $queryBuilder->expr()->in(
+                $languageField,
+                $queryBuilder->createNamedParameter([0, -1], Connection::PARAM_INT_ARRAY)
+            );
+
+            // If not in default language, also consider items in current language with no original
+            if ($languageId > 0) {
+                $transOrigPointerField = sprintf(
+                    '%s.%s',
+                    $table,
+                    $languageCapability->getTranslationOriginPointerField()->getName()
+                );
+
+                $languageConstraint = $queryBuilder->expr()->or(
+                    $languageConstraint,
+                    $queryBuilder->expr()->and(
+                        $queryBuilder->expr()->eq(
+                            $languageField,
+                            $queryBuilder->createNamedParameter($languageId, Connection::PARAM_INT)
+                        ),
+                        $queryBuilder->expr()->eq(
+                            $transOrigPointerField,
+                            $queryBuilder->createNamedParameter(0, Connection::PARAM_INT)
+                        )
+                    )
+                );
+            }
+
+            $queryBuilder->andWhere($languageConstraint);
+        }
+
+        // Get the related records from the database
+        $result = $queryBuilder->executeQuery();
+
+        while ($record = $result->fetchAssociative()) {
+            // Overlay the record for workspaces
+            $pageRepository->versionOL($table, $record);
+
+            // Overlay the record for translations
+            if (is_array($record)) {
+                $record = $pageRepository->getLanguageOverlay($table, $record);
+            }
+
+            // Record may have been unset during the overlay process
+            if (is_array($record)) {
+                $relatedRecords[] = $record;
+            }
+        }
+
+        return $relatedRecords;
+    }
+}

Classes/Content/ContentAreaResolver.php

@@ -0,0 +1,107 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Content;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Backend\View\BackendLayout\BackendLayout;
+use TYPO3\CMS\Core\Attribute\AsEventListener;
+use TYPO3\CMS\Core\Page\ContentArea;
+use TYPO3\CMS\Core\Page\ContentAreaClosure;
+use TYPO3\CMS\Core\Page\ContentSlideMode;
+use TYPO3\CMS\Core\Page\ResolveContentAreasEvent;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+
+final readonly class ContentAreaResolver
+{
+    public function __construct(private RecordCollector $recordCollector) {}
+
+    #[AsEventListener]
+    public function __invoke(ResolveContentAreasEvent $event): void
+    {
+        $layout = $event->getBackendLayout();
+        $fullStructure = $layout->getStructure()['__config'];
+        $contentAreas = $this->collectContentAreasRecursive($fullStructure, $layout);
+        $event->setContentAreas($contentAreas);
+    }
+
+    /**
+     * Find all arrays recursively from where one of the columns within the array is called "colPos"
+     *
+     * @param array<mixed>|array{
+     *     colPos: string|int,
+     *     name?: string|int,
+     *     slideMode?: string,
+     *     identifier?: string|int,
+     *     allowedContentTypes?: string,
+     *     disallowedContentTypes?: string,
+     * } $structure
+     * @param array<string, ContentAreaClosure> $contentAreas
+     * @return array<string, ContentAreaClosure>
+     */
+    private function collectContentAreasRecursive(array $structure, BackendLayout $layout, array $contentAreas = []): array
+    {
+        if (isset($structure['colPos'])) {
+            $name = (string)($structure['name'] ?? '');
+            $colPos = (int)$structure['colPos'];
+            $slideMode = ContentSlideMode::tryFrom($structure['slideMode'] ?? null);
+            $allowedContentTypes = GeneralUtility::trimExplode(',', $structure['allowedContentTypes'] ?? '', true);
+            $disallowedContentTypes = GeneralUtility::trimExplode(',', $structure['disallowedContentTypes'] ?? '', true);
+            $identifier = (string)($structure['identifier'] ?? '');
+            if ($identifier === '') {
+                throw new \RuntimeException(
+                    'No identifier given for column with colPos "' . $colPos . '" in page layout "' . $layout->getIdentifier() . '". Setting an identifier is mandatory.',
+                    1780173420
+                );
+            }
+            $contentAreas[$identifier] = new ContentAreaClosure(
+                function (ServerRequestInterface $request) use ($identifier, $name, $colPos, $slideMode, $allowedContentTypes, $disallowedContentTypes, $structure): ContentArea {
+                    $cObj = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+                    $cObj->setRequest($request);
+                    $records = $this->recordCollector->collect(
+                        'tt_content',
+                        [
+                            'where' => '{#colPos}=' . $colPos,
+                            'orderBy' => 'sorting',
+                        ],
+                        $slideMode,
+                        $cObj
+                    );
+                    return new ContentArea(
+                        identifier: $identifier,
+                        name: $name,
+                        colPos: $colPos,
+                        slideMode: $slideMode,
+                        allowedContentTypes: $allowedContentTypes,
+                        disallowedContentTypes: $disallowedContentTypes,
+                        configuration: $structure,
+                        records: $records
+                    );
+                }
+            );
+            // Content Areas cannot be nested. Bubble up and find further areas next to this.
+            return $contentAreas;
+        }
+        foreach ($structure as $value) {
+            if (is_array($value)) {
+                $contentAreas = $this->collectContentAreasRecursive($value, $layout, $contentAreas);
+            }
+        }
+        return $contentAreas;
+    }
+}

Classes/Content/RecordCollector.php

@@ -0,0 +1,89 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Content;
+
+use TYPO3\CMS\Core\Domain\Persistence\RecordIdentityMap;
+use TYPO3\CMS\Core\Domain\RecordFactory;
+use TYPO3\CMS\Core\Domain\RecordInterface;
+use TYPO3\CMS\Core\Page\ContentSlideMode;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+
+/**
+ * Executes a SQL query, and retrieves TCA-based records for Frontend rendering.
+ */
+readonly class RecordCollector
+{
+    public function __construct(
+        protected RecordFactory $recordFactory
+    ) {}
+
+    public function collect(
+        string $table,
+        array $select,
+        ContentSlideMode $slideMode,
+        ContentObjectRenderer $contentObjectRenderer,
+        ?RecordIdentityMap $recordIdentityMap = null,
+    ): array {
+        $slideCollectReverse = false;
+        $collect = false;
+        switch ($slideMode) {
+            case ContentSlideMode::Slide:
+                $slide = true;
+                break;
+            case ContentSlideMode::Collect:
+                $slide = true;
+                $collect = true;
+                break;
+            case ContentSlideMode::CollectReverse:
+                $slide = true;
+                $collect = true;
+                $slideCollectReverse = true;
+                break;
+            default:
+                $slide = false;
+        }
+        $again = false;
+        $totalRecords = [];
+
+        do {
+            $recordsOnPid = $contentObjectRenderer->getRecords($table, $select);
+            $recordsOnPid = array_map(
+                fn(array $record): RecordInterface => $this->recordFactory->createResolvedRecordFromDatabaseRow($table, $record, null, $recordIdentityMap),
+                $recordsOnPid
+            );
+
+            if ($slideCollectReverse) {
+                $totalRecords = array_merge($totalRecords, $recordsOnPid);
+            } else {
+                $totalRecords = array_merge($recordsOnPid, $totalRecords);
+            }
+            if ($slide) {
+                $select['pidInList'] = $contentObjectRenderer->getSlidePids($select['pidInList'] ?? '', $select['pidInList.'] ?? []);
+                if (isset($select['pidInList.'])) {
+                    unset($select['pidInList.']);
+                }
+                $again = $select['pidInList'] !== '';
+            }
+        } while ($again && $slide && ($recordsOnPid === [] || $collect));
+
+        foreach ($totalRecords as $record) {
+            $contentObjectRenderer->lastChanged($record);
+        }
+        return $totalRecords;
+    }
+}

Classes/ContentObject/AbstractContentObject.php

@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Domain\Repository\PageRepository;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\Exception\ContentRenderingException;
+
+/**
+ * Contains an abstract class for all tslib content class implementations.
+ */
+abstract class AbstractContentObject
+{
+    /**
+     * Always set via setRequest() by ContentObjectFactory after instantiation
+     */
+    protected ServerRequestInterface $request;
+
+    protected ?ContentObjectRenderer $cObj = null;
+
+    /**
+     * Renders the content object.
+     *
+     * @param mixed $conf Array of TypoScript properties (marked as "mixed" currently because we don't know what we're receiving)
+     * @return string
+     * @throws ContentRenderingException
+     * @throws \Exception
+     */
+    abstract public function render($conf = []);
+
+    public function getContentObjectRenderer(): ContentObjectRenderer
+    {
+        return $this->cObj;
+    }
+
+    public function setRequest(ServerRequestInterface $request): void
+    {
+        $this->request = $request;
+    }
+
+    public function setContentObjectRenderer(ContentObjectRenderer $cObj): void
+    {
+        $this->cObj = $cObj;
+        // Provide the ContentObjectRenderer to the request as well, for code
+        // that only passes the request to more underlying layers, like Extbase does.
+        // Also makes sure the request in a Fluid RenderingContext also has the current
+        // content object available.
+        $this->request = $this->request->withAttribute('currentContentObject', $cObj);
+    }
+
+    protected function getPageRepository(): PageRepository
+    {
+        return GeneralUtility::makeInstance(PageRepository::class);
+    }
+}

Classes/ContentObject/CaseContentObject.php

@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/**
+ * Contains CASE class object.
+ */
+class CaseContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject, CASE
+     *
+     * @param mixed $conf Array of TypoScript properties (marked as "mixed" currently because we don't know what we're receiving)
+     * @return string Output
+     */
+    public function render($conf = []): string
+    {
+        if (!empty($conf['if.']) && !$this->cObj->checkIf($conf['if.'])) {
+            return '';
+        }
+
+        $setCurrent = $this->cObj->stdWrapValue('setCurrent', $conf);
+        if ($setCurrent) {
+            $this->cObj->data[$this->cObj->currentValKey] = $setCurrent;
+        }
+        $key = $this->cObj->stdWrapValue('key', $conf, null);
+        $key = isset($conf[$key]) && (string)$conf[$key] !== '' ? $key : 'default';
+        // If no "default" property is available, then an empty string is returned
+        if ($key === 'default' && !isset($conf['default'])) {
+            $theValue = '';
+        } else {
+            $theValue = $this->cObj->cObjGetSingle($conf[$key], $conf[$key . '.'] ?? [], $key);
+        }
+        if (isset($conf['stdWrap.'])) {
+            $theValue = $this->cObj->stdWrap($theValue, $conf['stdWrap.']);
+        }
+        return $theValue;
+    }
+}

Classes/ContentObject/ContentContentObject.php

@@ -0,0 +1,135 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\EventDispatcher\EventDispatcherInterface;
+use TYPO3\CMS\Core\TimeTracker\TimeTracker;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\Event\ModifyRecordsAfterFetchingContentEvent;
+
+/**
+ * Contains CONTENT class object.
+ */
+class ContentContentObject extends AbstractContentObject
+{
+    public function __construct(
+        private readonly TimeTracker $timeTracker,
+        private readonly EventDispatcherInterface $eventDispatcher,
+    ) {}
+
+    /**
+     * Rendering the cObject, CONTENT
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        if (!empty($conf['if.']) && !$this->cObj->checkIf($conf['if.'])) {
+            return '';
+        }
+
+        $theValue = '';
+        $conf['table'] = trim((string)$this->cObj->stdWrapValue('table', $conf));
+        $conf['select.'] = !empty($conf['select.']) ? $conf['select.'] : [];
+        $renderObjName = ($conf['renderObj'] ?? false) ? $conf['renderObj'] : '<' . $conf['table'];
+        $renderObjKey = ($conf['renderObj'] ?? false) ? 'renderObj' : '';
+        $renderObjConf = $conf['renderObj.'] ?? [];
+        $slide = (int)$this->cObj->stdWrapValue('slide', $conf);
+        if (!$slide) {
+            $slide = 0;
+        }
+        $slideCollect = (int)$this->cObj->stdWrapValue('collect', $conf['slide.'] ?? []);
+        if (!$slideCollect) {
+            $slideCollect = 0;
+        }
+        $slideCollectReverse = (bool)$this->cObj->stdWrapValue('collectReverse', $conf['slide.'] ?? []);
+        $slideCollectFuzzy = (bool)$this->cObj->stdWrapValue('collectFuzzy', $conf['slide.'] ?? []);
+        if (!$slideCollect) {
+            $slideCollectFuzzy = true;
+        }
+        $again = false;
+        $tmpValue = '';
+
+        do {
+            $cobjValue = '';
+            $modifyRecordsEvent = $this->eventDispatcher->dispatch(
+                new ModifyRecordsAfterFetchingContentEvent(
+                    $this->cObj->getRecords($conf['table'], $conf['select.']),
+                    $theValue,
+                    $slide,
+                    $slideCollect,
+                    $slideCollectReverse,
+                    $slideCollectFuzzy,
+                    $conf
+                )
+            );
+
+            $records = $modifyRecordsEvent->getRecords();
+            $theValue = $modifyRecordsEvent->getFinalContent();
+            $slide = $modifyRecordsEvent->getSlide();
+            $slideCollect = $modifyRecordsEvent->getSlideCollect();
+            $slideCollectReverse = $modifyRecordsEvent->getSlideCollectReverse();
+            $slideCollectFuzzy = $modifyRecordsEvent->getSlideCollectFuzzy();
+            $conf = $modifyRecordsEvent->getConfiguration();
+
+            if ($records !== []) {
+                $this->timeTracker->setTSlogMessage('NUMROWS: ' . count($records));
+
+                $cObj = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+                $cObj->setParent($this->cObj->data, $this->cObj->currentRecord);
+
+                foreach ($records as $row) {
+                    $this->cObj->lastChanged($row['tstamp'] ?? 0);
+                    $cObj->setRequest($this->request);
+                    $cObj->start($row, $conf['table']);
+                    $tmpValue = $cObj->cObjGetSingle($renderObjName, $renderObjConf, $renderObjKey);
+                    $cobjValue .= $tmpValue;
+                }
+            }
+            if ($slideCollectReverse) {
+                $theValue = $cobjValue . $theValue;
+            } else {
+                $theValue .= $cobjValue;
+            }
+            if ($slideCollect > 0) {
+                $slideCollect--;
+            }
+            if ($slide) {
+                if ($slide > 0) {
+                    $slide--;
+                }
+                $conf['select.']['pidInList'] = $this->cObj->getSlidePids(
+                    $conf['select.']['pidInList'] ?? '',
+                    $conf['select.']['pidInList.'] ?? [],
+                );
+                if (isset($conf['select.']['pidInList.'])) {
+                    unset($conf['select.']['pidInList.']);
+                }
+                $again = (string)$conf['select.']['pidInList'] !== '';
+            }
+        } while ($again && $slide && ((string)$tmpValue === '' && $slideCollectFuzzy || $slideCollect));
+
+        $wrap = $this->cObj->stdWrapValue('wrap', $conf);
+        if ($wrap) {
+            $theValue = $this->cObj->wrap($theValue, $wrap);
+        }
+        if (isset($conf['stdWrap.'])) {
+            $theValue = $this->cObj->stdWrap($theValue, $conf['stdWrap.']);
+        }
+        return $theValue;
+    }
+}

Classes/ContentObject/ContentDataProcessor.php

@@ -0,0 +1,101 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\Container\ContainerInterface;
+use Symfony\Component\DependencyInjection\Attribute\Autoconfigure;
+use TYPO3\CMS\Core\Utility\ArrayUtility;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\DataProcessing\DataProcessorRegistry;
+
+/**
+ * A class that contains methods that can be used to use the dataProcessing functionality
+ */
+#[Autoconfigure(public: true)]
+readonly class ContentDataProcessor
+{
+    public function __construct(
+        private ContainerInterface $container,
+        private DataProcessorRegistry $dataProcessorRegistry,
+    ) {}
+
+    /**
+     * Check for the availability of processors, defined in TypoScript, and use them for data processing
+     *
+     * @param array $configuration Configuration array
+     * @param array $variables the variables to be processed
+     * @return array the processed data and variables as key/value store
+     * @throws \UnexpectedValueException If a processor class does not exist
+     */
+    public function process(ContentObjectRenderer $cObject, array $configuration, array $variables)
+    {
+        if (
+            !empty($configuration['dataProcessing.'])
+            && is_array($configuration['dataProcessing.'])
+        ) {
+            $processors = $configuration['dataProcessing.'];
+            $processorKeys = ArrayUtility::filterAndSortByNumericKeys($processors);
+
+            foreach ($processorKeys as $key) {
+                $dataProcessor = $this->dataProcessorRegistry->getDataProcessor($processors[$key])
+                    ?? $this->getDataProcessor($processors[$key]);
+                $processorConfiguration = $processors[$key . '.'] ?? [];
+                $variables = $dataProcessor->process(
+                    $cObject,
+                    $configuration,
+                    $processorConfiguration,
+                    $variables
+                );
+            }
+        }
+
+        return $variables;
+    }
+
+    private function getDataProcessor(string $serviceName): DataProcessorInterface
+    {
+        if (!$this->container->has($serviceName)) {
+            // assume serviceName is the class name if it is not available in the container
+            return $this->instantiateDataProcessor($serviceName);
+        }
+
+        $dataProcessor = $this->container->get($serviceName);
+        if (!$dataProcessor instanceof DataProcessorInterface) {
+            throw new \UnexpectedValueException(
+                'Processor with service name "' . $serviceName . '" '
+                . 'must implement interface "' . DataProcessorInterface::class . '"',
+                1635927108
+            );
+        }
+        return $dataProcessor;
+    }
+
+    private function instantiateDataProcessor(string $className): DataProcessorInterface
+    {
+        if (!class_exists($className)) {
+            throw new \UnexpectedValueException('Processor class or service name "' . $className . '" does not exist!', 1427455378);
+        }
+
+        if (!in_array(DataProcessorInterface::class, class_implements($className) ?: [], true)) {
+            throw new \UnexpectedValueException(
+                'Processor with class name "' . $className . '" '
+                . 'must implement interface "' . DataProcessorInterface::class . '"',
+                1427455377
+            );
+        }
+        return GeneralUtility::makeInstance($className);
+    }
+}

Classes/ContentObject/ContentObjectArrayContentObject.php

@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\Log\LogLevel;
+use TYPO3\CMS\Core\TimeTracker\TimeTracker;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Contains COA class object.
+ */
+class ContentObjectArrayContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject, COBJ_ARRAY / COA
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        if (empty($conf)) {
+            $this->getTimeTracker()->setTSlogMessage('No elements in this content object array (COBJ_ARRAY, COA).', LogLevel::WARNING);
+            return '';
+        }
+        if (!empty($conf['if.']) && !$this->cObj->checkIf($conf['if.'])) {
+            return '';
+        }
+
+        $content = $this->cObj->cObjGet($conf);
+        $wrap = $this->cObj->stdWrapValue('wrap', $conf);
+        if ($wrap) {
+            $content = $this->cObj->wrap($content, $wrap);
+        }
+        if (isset($conf['stdWrap.'])) {
+            $content = $this->cObj->stdWrap($content, $conf['stdWrap.']);
+        }
+        return $content;
+    }
+
+    /**
+     * @return TimeTracker
+     */
+    protected function getTimeTracker()
+    {
+        return GeneralUtility::makeInstance(TimeTracker::class);
+    }
+}

Classes/ContentObject/ContentObjectArrayInternalContentObject.php

@@ -0,0 +1,55 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\Log\LogLevel;
+use TYPO3\CMS\Core\TimeTracker\TimeTracker;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\StringUtility;
+
+/**
+ * Contains COA_INT class object.
+ */
+class ContentObjectArrayInternalContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject, COA_INT
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        if (empty($conf)) {
+            $this->getTimeTracker()->setTSlogMessage('No elements in this content object array (COA_INT).', LogLevel::WARNING);
+            return '';
+        }
+        $substKey = 'INT_SCRIPT.' . md5(StringUtility::getUniqueId());
+        $pageParts = $this->request->getAttribute('frontend.page.parts');
+        $pageParts->addNotCachedContentElement([
+            'substKey' => $substKey,
+            'conf' => $conf,
+            'cObjData' => serialize($this->cObj->getState()),
+            'type' => 'COA',
+        ]);
+        return '<!--' . $substKey . '-->';
+    }
+
+    protected function getTimeTracker(): TimeTracker
+    {
+        return GeneralUtility::makeInstance(TimeTracker::class);
+    }
+}

Classes/ContentObject/ContentObjectFactory.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\Container\ContainerInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Frontend\ContentObject\Exception\ContentRenderingException;
+
+/**
+ * Registry to create cObjects (e.g. TEXT)
+ * @internal
+ */
+class ContentObjectFactory
+{
+    public function __construct(private ContainerInterface $contentObjectLocator) {}
+
+    public function getContentObject(string $name, ServerRequestInterface $request, ContentObjectRenderer $contentObjectRenderer): ?AbstractContentObject
+    {
+        if (!$this->contentObjectLocator->has($name)) {
+            return null;
+        }
+
+        $contentObject = $this->contentObjectLocator->get($name);
+        if (!($contentObject instanceof AbstractContentObject)) {
+            throw new ContentRenderingException(sprintf('Registered content object class name "%s" must be an instance of AbstractContentObject, but is not!', get_class($contentObject)), 1422564295);
+        }
+
+        $contentObject->setRequest($request);
+        $contentObject->setContentObjectRenderer($contentObjectRenderer);
+
+        return $contentObject;
+    }
+}

Classes/ContentObject/ContentObjectGetPublicUrlForFileHookInterface.php

@@ -0,0 +1,34 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use TYPO3\CMS\Core\Resource\File;
+
+/**
+ * Interface for hooks to fetch the public URL of files
+ */
+interface ContentObjectGetPublicUrlForFileHookInterface
+{
+    /**
+     * Post-processes a public URL.
+     *
+     * @param \TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer $parent The current content object (context)
+     * @param array $configuration TypoScript configuration
+     * @param File $file The file object to be used
+     * @param string $pubicUrl Reference to the public URL
+     */
+    public function postProcess(ContentObjectRenderer $parent, array $configuration, File $file, &$pubicUrl);
+}

Classes/ContentObject/DataProcessorInterface.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/**
+ * Interface for data processor classes processing data from
+ * ContentObjectRenderer, used e.g. with the FLUIDTEMPLATE content object
+ */
+interface DataProcessorInterface
+{
+    /**
+     * Process content object data
+     *
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(
+        ContentObjectRenderer $cObj,
+        array $contentObjectConfiguration,
+        array $processorConfiguration,
+        array $processedData
+    );
+}

Classes/ContentObject/Event/AfterContentObjectRendererInitializedEvent.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+
+/**
+ * Listeners are able to modify the initialized ContentObjectRenderer instance
+ */
+final readonly class AfterContentObjectRendererInitializedEvent
+{
+    public function __construct(
+        private ContentObjectRenderer $contentObjectRenderer
+    ) {}
+
+    public function getContentObjectRenderer(): ContentObjectRenderer
+    {
+        return $this->contentObjectRenderer;
+    }
+}

Classes/ContentObject/Event/AfterGetDataResolvedEvent.php

@@ -0,0 +1,58 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+
+/**
+ * Listeners are able to modify the resolved ContentObjectRenderer->getData() result
+ */
+final class AfterGetDataResolvedEvent
+{
+    public function __construct(
+        private readonly string $parameterString,
+        private readonly array $alternativeFieldArray,
+        private mixed $result,
+        private readonly ContentObjectRenderer $contentObjectRenderer
+    ) {}
+
+    public function getResult(): mixed
+    {
+        return $this->result;
+    }
+
+    public function setResult(mixed $result): void
+    {
+        $this->result = $result;
+    }
+
+    public function getParameterString(): string
+    {
+        return $this->parameterString;
+    }
+
+    public function getAlternativeFieldArray(): array
+    {
+        return $this->alternativeFieldArray;
+    }
+
+    public function getContentObjectRenderer(): ContentObjectRenderer
+    {
+        return $this->contentObjectRenderer;
+    }
+}

Classes/ContentObject/Event/AfterImageResourceResolvedEvent.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+use TYPO3\CMS\Core\Imaging\ImageResource;
+use TYPO3\CMS\Core\Resource\File;
+use TYPO3\CMS\Core\Resource\FileReference;
+
+/**
+ * Listeners are able to modify the resolved ContentObjectRenderer->getImgResource() result
+ */
+final class AfterImageResourceResolvedEvent
+{
+    public function __construct(
+        private readonly string|File|FileReference $file,
+        private readonly array $fileArray,
+        private ?ImageResource $imageResource
+    ) {}
+
+    public function getFile(): string|File|FileReference
+    {
+        return $this->file;
+    }
+
+    public function getFileArray(): array
+    {
+        return $this->fileArray;
+    }
+
+    public function getImageResource(): ?ImageResource
+    {
+        return $this->imageResource;
+    }
+
+    public function setImageResource(?ImageResource $imageResource): void
+    {
+        $this->imageResource = $imageResource;
+    }
+}

Classes/ContentObject/Event/AfterStdWrapFunctionsExecutedEvent.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+/**
+ * Event is called after the content has been modified by the rest of the stdWrap functions
+ */
+final class AfterStdWrapFunctionsExecutedEvent extends EnhanceStdWrapEvent {}

Classes/ContentObject/Event/AfterStdWrapFunctionsInitializedEvent.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+/**
+ * Event is dispatched after stdWrap functions have been initialized,
+ * but before any content gets modified or replaced.
+ */
+final class AfterStdWrapFunctionsInitializedEvent extends EnhanceStdWrapEvent {}

Classes/ContentObject/Event/BeforeStdWrapContentStoredInCacheEvent.php

@@ -0,0 +1,89 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+
+/**
+ * Listeners to this Event are able to modify the final stdWrap content
+ * and corresponding cache tags, before being stored in cache.
+ *
+ * Additionally, listeners are also able to change the cache key to be used
+ * as well as the lifetime. Therefore, the whole configuration is available.
+ */
+final class BeforeStdWrapContentStoredInCacheEvent
+{
+    public function __construct(
+        private ?string $content,
+        private array $tags,
+        private string $key,
+        private ?int $lifetime,
+        private readonly array $configuration,
+        private readonly ContentObjectRenderer $contentObjectRenderer
+    ) {}
+
+    public function getContent(): ?string
+    {
+        return $this->content;
+    }
+
+    public function setContent(string $content): void
+    {
+        $this->content = $content;
+    }
+
+    public function getTags(): array
+    {
+        return $this->tags;
+    }
+
+    public function setTags(array $tags): void
+    {
+        $this->tags = $tags;
+    }
+
+    public function getKey(): string
+    {
+        return $this->key;
+    }
+
+    public function setKey(string $key): void
+    {
+        $this->key = $key;
+    }
+
+    public function getLifetime(): ?int
+    {
+        return $this->lifetime;
+    }
+
+    public function setLifetime(?int $lifetime): void
+    {
+        $this->lifetime = $lifetime;
+    }
+
+    public function getConfiguration(): array
+    {
+        return $this->configuration;
+    }
+
+    public function getContentObjectRenderer(): ContentObjectRenderer
+    {
+        return $this->contentObjectRenderer;
+    }
+}

Classes/ContentObject/Event/BeforeStdWrapFunctionsExecutedEvent.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+/**
+ * Event is called directly after the recursive stdWrap function call but still before the content gets modified
+ */
+final class BeforeStdWrapFunctionsExecutedEvent extends EnhanceStdWrapEvent {}

Classes/ContentObject/Event/BeforeStdWrapFunctionsInitializedEvent.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+/**
+ * Event is dispatched before any stdWrap function is initialized / called
+ */
+final class BeforeStdWrapFunctionsInitializedEvent extends EnhanceStdWrapEvent {}

Classes/ContentObject/Event/EnhanceStdWrapEvent.php

@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+
+/**
+ * Listeners to this Event are able to modify the stdWrap processing, enhancing the functionality and
+ * manipulating the final result / content. This is the parent Event, which allows the corresponding
+ * listeners to be called on each step, see child Events:
+ *
+ * @see BeforeStdWrapFunctionsInitializedEvent
+ * @see AfterStdWrapFunctionsInitializedEvent
+ * @see BeforeStdWrapFunctionsExecutedEvent
+ * @see AfterStdWrapFunctionsExecutedEvent
+ *
+ * Note: The class is declared abstract to prevent it from being dispatched directly.
+ *       Only child classes are to be dispatched to prevent duplicate executions.
+ */
+abstract class EnhanceStdWrapEvent
+{
+    public function __construct(
+        private ?string $content,
+        private readonly array $configuration,
+        private readonly ContentObjectRenderer $contentObjectRenderer
+    ) {}
+
+    public function getContent(): ?string
+    {
+        return $this->content;
+    }
+
+    public function setContent(string $content): void
+    {
+        $this->content = $content;
+    }
+
+    public function getConfiguration(): array
+    {
+        return $this->configuration;
+    }
+
+    public function getContentObjectRenderer(): ContentObjectRenderer
+    {
+        return $this->contentObjectRenderer;
+    }
+}

Classes/ContentObject/Event/ModifyImageSourceCollectionEvent.php

@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+
+/**
+ * Listeners are able to enrich the final source collection result
+ */
+final class ModifyImageSourceCollectionEvent
+{
+    public function __construct(
+        private string $sourceCollection,
+        private readonly string $fullSourceCollection,
+        private readonly array $sourceConfiguration,
+        private readonly array $sourceRenderConfiguration,
+        private readonly ContentObjectRenderer $contentObjectRenderer
+    ) {}
+
+    public function setSourceCollection(string $sourceCollection): void
+    {
+        $this->sourceCollection = $sourceCollection;
+    }
+
+    public function getSourceCollection(): string
+    {
+        return $this->sourceCollection;
+    }
+
+    public function getFullSourceCollection(): string
+    {
+        return $this->fullSourceCollection;
+    }
+
+    public function getSourceConfiguration(): array
+    {
+        return $this->sourceConfiguration;
+    }
+
+    public function getSourceRenderConfiguration(): array
+    {
+        return $this->sourceRenderConfiguration;
+    }
+
+    public function getContentObjectRenderer(): ContentObjectRenderer
+    {
+        return $this->contentObjectRenderer;
+    }
+}

Classes/ContentObject/Event/ModifyRecordsAfterFetchingContentEvent.php

@@ -0,0 +1,110 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Event;
+
+/**
+ * Event which is fired after ContentContentObject has pulled records from database.
+ *
+ * Therefore, allows listeners to completely manipulate the fetched
+ * records, prior to being further processed by the content object.
+ *
+ * Additionally, the event also allows to manipulate the configuration
+ * and options, such as the "value" or "slide".
+ */
+final class ModifyRecordsAfterFetchingContentEvent
+{
+    public function __construct(
+        private array $records,
+        private string $finalContent,
+        private int $slide,
+        private int $slideCollect,
+        private bool $slideCollectReverse,
+        private bool $slideCollectFuzzy,
+        private array $configuration,
+    ) {}
+
+    public function getRecords(): array
+    {
+        return $this->records;
+    }
+
+    public function setRecords(array $records): void
+    {
+        $this->records = $records;
+    }
+
+    public function getFinalContent(): string
+    {
+        return $this->finalContent;
+    }
+
+    public function setFinalContent(string $finalContent): void
+    {
+        $this->finalContent = $finalContent;
+    }
+
+    public function getSlide(): int
+    {
+        return $this->slide;
+    }
+
+    public function setSlide(int $slide): void
+    {
+        $this->slide = $slide;
+    }
+
+    public function getSlideCollect(): int
+    {
+        return $this->slideCollect;
+    }
+
+    public function setSlideCollect(int $slideCollect): void
+    {
+        $this->slideCollect = $slideCollect;
+    }
+
+    public function getSlideCollectReverse(): bool
+    {
+        return $this->slideCollectReverse;
+    }
+
+    public function setSlideCollectReverse(bool $slideCollectReverse): void
+    {
+        $this->slideCollectReverse = $slideCollectReverse;
+    }
+
+    public function getSlideCollectFuzzy(): bool
+    {
+        return $this->slideCollectFuzzy;
+    }
+
+    public function setSlideCollectFuzzy(bool $slideCollectFuzzy): void
+    {
+        $this->slideCollectFuzzy = $slideCollectFuzzy;
+    }
+
+    public function getConfiguration(): array
+    {
+        return $this->configuration;
+    }
+
+    public function setConfiguration(array $configuration): void
+    {
+        $this->configuration = $configuration;
+    }
+}

Classes/ContentObject/Exception/ContentRenderingException.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Exception;
+
+use TYPO3\CMS\Core\Error\Exception;
+
+/**
+ * @internal this is a concrete TYPO3 implementation and solely used for EXT:frontend and not part of TYPO3's Core API.
+ */
+class ContentRenderingException extends Exception {}

Classes/ContentObject/Exception/ExceptionHandlerInterface.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Exception;
+
+use TYPO3\CMS\Frontend\ContentObject\AbstractContentObject;
+
+/**
+ * Interface ExceptionHandlerInterface
+ */
+interface ExceptionHandlerInterface
+{
+    /**
+     * Handles exceptions thrown during rendering of content objects
+     * The handler can decide whether to re-throw the exception or
+     * return a nice error message for production context.
+     *
+     * @param array $contentObjectConfiguration
+     * @return string
+     */
+    public function handle(\Exception $exception, ?AbstractContentObject $contentObject = null, $contentObjectConfiguration = []);
+
+    /**
+     * Used to pass the TypoScript configuration to the exception handler
+     */
+    public function setConfiguration(array $configuration): void;
+}

Classes/ContentObject/Exception/ProductionExceptionHandler.php

@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Exception;
+
+use Psr\Log\LoggerInterface;
+use Symfony\Component\DependencyInjection\Attribute\Autoconfigure;
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Core\RequestId;
+use TYPO3\CMS\Core\Crypto\Random;
+use TYPO3\CMS\Core\Error\AbstractExceptionHandler;
+use TYPO3\CMS\Core\Http\ImmediateResponseException;
+use TYPO3\CMS\Frontend\ContentObject\AbstractContentObject;
+
+/**
+ * Exception handler class for content object rendering
+ * @internal this is a concrete TYPO3 implementation and solely used for EXT:frontend and not part of TYPO3's Core API.
+ */
+#[Autoconfigure(public: true, shared: false)]
+class ProductionExceptionHandler implements ExceptionHandlerInterface
+{
+    protected array $configuration = [];
+
+    public function __construct(
+        protected Context $context,
+        protected Random $random,
+        protected LoggerInterface $logger,
+        protected RequestId $requestId
+    ) {}
+
+    public function setConfiguration(array $configuration): void
+    {
+        $this->configuration = $configuration;
+    }
+
+    /**
+     * Handles exceptions thrown during rendering of content objects
+     * The handler can decide whether to re-throw the exception or
+     * return a nice error message for production context.
+     *
+     * @param array $contentObjectConfiguration
+     * @throws \Exception
+     */
+    public function handle(\Exception $exception, ?AbstractContentObject $contentObject = null, $contentObjectConfiguration = []): string
+    {
+        // ImmediateResponseException (and the derived PropagateResponseException) should work similar to
+        // exit / die and must therefore not be handled by this ExceptionHandler.
+        if ($exception instanceof ImmediateResponseException) {
+            throw $exception;
+        }
+
+        if (!empty($this->configuration['ignoreCodes.'])
+            && in_array($exception->getCode(), array_map('intval', $this->configuration['ignoreCodes.']), true)
+        ) {
+            throw $exception;
+        }
+
+        $errorMessage = $this->configuration['errorMessage'] ?? 'Oops, an error occurred! Request: {requestId}';
+
+        // $code and it's placeholder %s for b/w compatibility
+        $code = $this->context->getAspect('date')->getDateTime()->format('YmdHis') . $this->random->generateRandomHexString(8);
+        $errorMessage = str_replace('%s', '{code}', $errorMessage);
+
+        // Log exception except HMAC validation exceptions caused by potentially forged requests
+        if (!in_array($exception->getCode(), AbstractExceptionHandler::IGNORED_HMAC_EXCEPTION_CODES, true)) {
+            $this->logger->alert($errorMessage, ['exception' => $exception, 'code' => $code, 'requestId' => $this->requestId]);
+        }
+
+        // Return interpolated error message
+        return str_replace(['{code}', '{requestId}'], [$code, (string)$this->requestId], $errorMessage);
+    }
+}

Classes/ContentObject/FileLinkHookInterface.php

@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use TYPO3\CMS\Core\Resource\File;
+
+/**
+ * Interface for classes which hook into \TYPO3\CMS\Frontend\ContentObject and do additional getImgResource processing
+ */
+interface FileLinkHookInterface
+{
+    /**
+     * Finds alternative previewImage for given File.
+     *
+     * @return File
+     */
+    public function getPreviewImage(File $file);
+}

Classes/ContentObject/FilesContentObject.php

@@ -0,0 +1,185 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use TYPO3\CMS\Core\TypoScript\TypoScriptService;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\MathUtility;
+use TYPO3\CMS\Frontend\Resource\FileCollector;
+
+/**
+ * Contains FILES content object
+ */
+class FilesContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject FILES
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        if (!empty($conf['if.']) && !$this->cObj->checkIf($conf['if.'])) {
+            return '';
+        }
+        $register = $this->request->getAttribute('frontend.register.stack')->current();
+        // Store the original "currentFile" within a variable so it can be re-applied later-on
+        $originalFileInContentObject = $this->cObj->getCurrentFile();
+
+        $fileCollector = $this->findAndSortFiles($conf);
+        $fileObjects = $fileCollector->getFiles();
+        $availableFileObjectCount = count($fileObjects);
+
+        // optionSplit applied to conf to allow different settings per file
+        $splitConf = GeneralUtility::makeInstance(TypoScriptService::class)
+            ->explodeConfigurationForOptionSplit($conf, $availableFileObjectCount);
+
+        $start = (int)$this->cObj->stdWrapValue('begin', $conf, 0);
+        $start = MathUtility::forceIntegerInRange($start, 0, $availableFileObjectCount);
+
+        $limit = (int)$this->cObj->stdWrapValue('maxItems', $conf, $availableFileObjectCount);
+        $end = MathUtility::forceIntegerInRange($start + $limit, $start, $availableFileObjectCount);
+
+        $register->set('FILES_COUNT', min($limit, $availableFileObjectCount));
+        $fileObjectCounter = 0;
+        $keys = array_keys($fileObjects);
+
+        $content = '';
+        for ($i = $start; $i < $end; $i++) {
+            $key = $keys[$i];
+            $fileObject = $fileObjects[$key];
+            $register->set('FILE_NUM_CURRENT', $fileObjectCounter);
+            $this->cObj->setCurrentFile($fileObject);
+            $content .= $this->cObj->cObjGetSingle($splitConf[$key]['renderObj'], $splitConf[$key]['renderObj.'], 'renderObj');
+            $fileObjectCounter++;
+        }
+
+        // Reset current file within cObj to the original file after rendering output of FILES
+        // so e.g. stdWrap is not working on the last current file applied, thus avoiding side-effects
+        $this->cObj->setCurrentFile($originalFileInContentObject);
+
+        return $this->cObj->stdWrap($content, $conf['stdWrap.'] ?? []);
+    }
+
+    /**
+     * Function to check for references, collections, folders and
+     * accumulates into one etc.
+     */
+    protected function findAndSortFiles(array $conf): FileCollector
+    {
+        $fileCollector = $this->getFileCollector();
+
+        // Getting the files
+        if ((isset($conf['references']) && $conf['references']) || (isset($conf['references.']) && $conf['references.'])) {
+            /*
+            The TypoScript could look like this:
+            # all items related to the page.media field:
+            references {
+                table = pages
+                uid.data = page:uid
+                fieldName = media
+            }
+            # or: sys_file_references with uid 27:
+            references = 27
+             */
+            $referencesUidList = (string)$this->cObj->stdWrapValue('references', $conf);
+            $referencesUids = GeneralUtility::intExplode(',', $referencesUidList, true);
+            $fileCollector->addFileReferences($referencesUids);
+
+            if (!empty($conf['references.'])) {
+                $this->addFileReferences($conf, (array)$this->cObj->data, $fileCollector);
+            }
+        }
+
+        if ((isset($conf['files']) && $conf['files']) || (isset($conf['files.']) && $conf['files.'])) {
+            /*
+            The TypoScript could look like this:
+            # with sys_file UIDs:
+            files = 12,14,15# using stdWrap:
+            files.field = some_field
+             */
+            $fileUids = GeneralUtility::intExplode(',', (string)$this->cObj->stdWrapValue('files', $conf), true);
+            $fileCollector->addFiles($fileUids);
+        }
+
+        if ((isset($conf['collections']) && $conf['collections']) || (isset($conf['collections.']) && $conf['collections.'])) {
+            $collectionUids = GeneralUtility::intExplode(',', (string)$this->cObj->stdWrapValue('collections', $conf), true);
+            $fileCollector->addFilesFromFileCollections($collectionUids);
+        }
+
+        if ((isset($conf['folders']) && $conf['folders']) || (isset($conf['folders.']) && $conf['folders.'])) {
+            $folderIdentifiers = GeneralUtility::trimExplode(',', (string)$this->cObj->stdWrapValue('folders', $conf));
+            $fileCollector->addFilesFromFolders($folderIdentifiers, !empty($conf['folders.']['recursive']));
+        }
+
+        // Enable sorting for multiple fileObjects
+        $sortingProperty = (string)$this->cObj->stdWrapValue('sorting', $conf);
+        if ($sortingProperty !== '') {
+            $sortingDirection = $this->cObj->stdWrapValue('direction', $conf['sorting.'] ?? []);
+            $fileCollector->sort($sortingProperty, $sortingDirection);
+        }
+
+        return $fileCollector;
+    }
+
+    /**
+     * Handles and resolves file references.
+     *
+     * @param array $configuration TypoScript configuration
+     * @param array $element The parent element referencing to files
+     */
+    protected function addFileReferences(array $configuration, array $element, FileCollector $fileCollector): void
+    {
+        // It's important that this always stays "fieldName" and not be renamed to "field" as it would otherwise collide with the stdWrap key of that name
+        $referencesFieldName = $this->cObj->stdWrapValue('fieldName', $configuration['references.'] ?? []);
+
+        // If no reference fieldName is set, there's nothing to do
+        if (empty($referencesFieldName)) {
+            return;
+        }
+
+        $currentId = !empty($element['uid']) ? $element['uid'] : 0;
+        $tableName = $this->cObj->getCurrentTable();
+
+        // Fetch the references of the default element
+        $referencesForeignTable = (string)$this->cObj->stdWrapValue('table', $configuration['references.'], $tableName);
+        $referencesForeignUid = (int)$this->cObj->stdWrapValue('uid', $configuration['references.'], $currentId);
+
+        $pageRepository = $this->getPageRepository();
+        // Fetch element if definition has been modified via TypoScript
+        if (
+            ($referencesForeignTable !== '' && $referencesForeignTable !== $tableName)
+            || ($referencesForeignUid !== 0 && $referencesForeignUid !== $currentId)
+        ) {
+            $element = $pageRepository->getRawRecord($referencesForeignTable, $referencesForeignUid);
+            // Do versionOL() again and unset move pointers
+            $pageRepository->versionOL($referencesForeignTable, $element, true);
+            if (is_array($element)) {
+                $element = $pageRepository->getLanguageOverlay($referencesForeignTable, $element);
+            }
+        }
+
+        if (is_array($element)) {
+            $fileCollector->addFilesFromRelation($referencesForeignTable ?: $tableName, $referencesFieldName, $element);
+        }
+    }
+
+    protected function getFileCollector(): FileCollector
+    {
+        return GeneralUtility::makeInstance(FileCollector::class);
+    }
+}

Classes/ContentObject/FluidTemplateContentObject.php

@@ -0,0 +1,273 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Information\Typo3Information;
+use TYPO3\CMS\Core\TypoScript\TypoScriptService;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\View\ViewFactoryData;
+use TYPO3\CMS\Core\View\ViewFactoryInterface;
+use TYPO3\CMS\Extbase\Configuration\ConfigurationManager;
+use TYPO3\CMS\Extbase\Mvc\Web\RequestBuilder;
+use TYPO3\CMS\Fluid\View\FluidViewAdapter;
+use TYPO3\CMS\Frontend\ContentObject\Exception\ContentRenderingException;
+use TYPO3Fluid\Fluid\View\Exception\InvalidLayoutException;
+use TYPO3Fluid\Fluid\View\Exception\InvalidPartialException;
+use TYPO3Fluid\Fluid\View\Exception\InvalidTemplateResourceException;
+
+/**
+ * Contains FLUIDTEMPLATE class object
+ */
+class FluidTemplateContentObject extends AbstractContentObject
+{
+    public function __construct(
+        private readonly ContentDataProcessor $contentDataProcessor,
+        private readonly TypoScriptService $typoScriptService,
+        private readonly ViewFactoryInterface $viewFactory,
+    ) {}
+
+    /**
+     * Rendering the cObject, FLUIDTEMPLATE
+     *
+     * Configuration properties:
+     * - file string+stdWrap The FLUID template file
+     * - layoutRootPaths array of filepath+stdWrap Root paths to layouts (fallback)
+     * - partialRootPaths array of filepath+stdWrap Root paths to partials (fallback)
+     * - variable array of cObjects, the keys are the variable names in fluid
+     * - dataProcessing array of data processors which are classes to manipulate $data
+     * - extbase.pluginName
+     * - extbase.controllerExtensionName
+     * - extbase.controllerName
+     * - extbase.controllerActionName
+     *
+     * Example:
+     * 10 = FLUIDTEMPLATE
+     * 10.templateName = MyTemplate
+     * 10.templateRootPaths.10 = EXT:site_configuration/Resources/Private/Templates/
+     * 10.partialRootPaths.10 = EXT:site_configuration/Resources/Private/Partials/
+     * 10.layoutRootPaths.10 = EXT:site_configuration/Resources/Private/Layouts/
+     * 10.variables {
+     *   mylabel = TEXT
+     *   mylabel.value = Label from TypoScript coming
+     * }
+     *
+     * @param mixed $conf Array of TypoScript properties (marked as "mixed" currently because we don't know what we're receiving)
+     */
+    public function render($conf = []): string
+    {
+        if (!is_array($conf)) {
+            $conf = [];
+        }
+
+        $request = $this->buildExtbaseRequestIfNeeded($this->request, $conf);
+        $templateFilename = '';
+        $templateSource = null;
+
+        if ((!empty($conf['templateName']) || !empty($conf['templateName.']))
+            && !empty($conf['templateRootPaths.']) && is_array($conf['templateRootPaths.'])
+        ) {
+            // This is the most preferred way to render fluid: set up paths, then call render('My/Template')
+            $viewFactoryData = new ViewFactoryData(
+                templateRootPaths: $this->applyStandardWrapToFluidPaths($conf['templateRootPaths.']),
+                partialRootPaths: $this->getPartialRootPaths($conf),
+                layoutRootPaths: $this->getLayoutRootPaths($conf),
+                request: $request,
+                format: $this->cObj->stdWrapValue('format', $conf, null),
+            );
+            $templateFilename = $this->cObj->stdWrapValue('templateName', $conf);
+        } elseif (!empty($conf['template']) && !empty($conf['template.'])) {
+            // Fetch the Fluid template by template cObject "template = TEXT, template.value = <f:foo ..."
+            $templateSource = $this->cObj->cObjGetSingle($conf['template'], $conf['template.'], 'template');
+            if ($templateSource === '') {
+                throw new ContentRenderingException(
+                    'Could not find template source for ' . $conf['template'],
+                    1437420865
+                );
+            }
+            $viewFactoryData = new ViewFactoryData(
+                partialRootPaths: $this->getPartialRootPaths($conf),
+                layoutRootPaths: $this->getLayoutRootPaths($conf),
+                request: $request,
+                format: $this->cObj->stdWrapValue('format', $conf, null),
+            );
+        } else {
+            // Fetch the Fluid template by file stdWrap "file = EXT:myExt/.../Foo.html"
+            $file = (string)$this->cObj->stdWrapValue('file', $conf);
+            // Get the absolute file name
+            $templatePathAndFilename = GeneralUtility::getFileAbsFileName($file);
+            $viewFactoryData = new ViewFactoryData(
+                partialRootPaths: $this->getPartialRootPaths($conf),
+                layoutRootPaths: $this->getLayoutRootPaths($conf),
+                templatePathAndFilename: $templatePathAndFilename,
+                request: $request,
+                format: $this->cObj->stdWrapValue('format', $conf, null),
+            );
+        }
+
+        $view = $this->viewFactory->create($viewFactoryData);
+        if (!$view instanceof FluidViewAdapter) {
+            throw new ContentRenderingException(
+                'The FLUIDTEMPLATE content object only works with FluidViewAdapter view. Use a different'
+                . ' content object to render some other view',
+                1724680477
+            );
+        }
+
+        if ($templateSource) {
+            $view->getRenderingContext()->getTemplatePaths()->setTemplateSource($templateSource);
+        }
+
+        if (isset($conf['settings.'])) {
+            $settings = $this->typoScriptService->convertTypoScriptArrayToPlainArray($conf['settings.']);
+            $view->assign('settings', $settings);
+        }
+        $variables = $this->getContentObjectVariables($conf);
+        $variables = $this->contentDataProcessor->process($this->cObj, $conf, $variables);
+        $view->assignMultiple($variables);
+
+        try {
+            // View needs to be rendered before the following asset rendering because it
+            // sets the template (paths) internally.
+            $content = $view->render($templateFilename);
+        } catch (InvalidTemplateResourceException $e) {
+            // Only add a FLUIDTEMPLATE specific message in case the exception has been thrown for the given template
+            if ($e instanceof InvalidPartialException || $e instanceof InvalidLayoutException || $templateFilename === '' || $e->templateName !== 'Default/' . $templateFilename) {
+                throw $e;
+            }
+            throw new InvalidTemplateResourceException(
+                sprintf(
+                    'FLUIDTEMPLATE TypoScript object: Failed to resolve a template file for templateName "%s". See also: %s. The following paths were checked: "%s"',
+                    $templateFilename,
+                    Typo3Information::getDocsLink('t3tsref:cobj-template'),
+                    implode('", "', $e->evaluatedTemplatePaths),
+                ),
+                1772572794,
+                $e,
+                $e->templateName,
+                $e->evaluatedTemplatePaths,
+            );
+        }
+
+        if (isset($conf['stdWrap.'])) {
+            return $this->cObj->stdWrap($content, $conf['stdWrap.']);
+        }
+        return $content;
+    }
+
+    protected function getLayoutRootPaths(array $conf): ?array
+    {
+        $layoutPaths = [];
+        $layoutRootPath = (string)$this->cObj->stdWrapValue('layoutRootPath', $conf);
+        if ($layoutRootPath !== '') {
+            $layoutPaths[] = GeneralUtility::getFileAbsFileName($layoutRootPath);
+        }
+        if (isset($conf['layoutRootPaths.'])) {
+            $layoutPaths = array_replace($layoutPaths, $this->applyStandardWrapToFluidPaths($conf['layoutRootPaths.']));
+        }
+        return !empty($layoutPaths) ? $layoutPaths : null;
+    }
+
+    protected function getPartialRootPaths(array $conf): ?array
+    {
+        $partialPaths = [];
+        $partialRootPath = (string)$this->cObj->stdWrapValue('partialRootPath', $conf);
+        if ($partialRootPath !== '') {
+            $partialPaths[] = GeneralUtility::getFileAbsFileName($partialRootPath);
+        }
+        if (isset($conf['partialRootPaths.'])) {
+            $partialPaths = array_replace($partialPaths, $this->applyStandardWrapToFluidPaths($conf['partialRootPaths.']));
+        }
+        return !empty($partialPaths) ? $partialPaths : null;
+    }
+
+    /**
+     * @todo: This magic has to fall one way or the other. It has been introduced for ext:form to
+     *        mimic extbase, see https://forge.typo3.org/issues/78842. This is actively used when
+     *        rendering forms using the formvh:render strategy, see the documentation.
+     */
+    protected function buildExtbaseRequestIfNeeded(ServerRequestInterface $request, array $conf): ServerRequestInterface
+    {
+        $requestPluginName = (string)$this->cObj->stdWrapValue('pluginName', $conf['extbase.'] ?? []);
+        $requestControllerExtensionName = (string)$this->cObj->stdWrapValue('controllerExtensionName', $conf['extbase.'] ?? []);
+        $requestControllerName = (string)$this->cObj->stdWrapValue('controllerName', $conf['extbase.'] ?? []);
+        $requestControllerActionName = (string)$this->cObj->stdWrapValue('controllerActionName', $conf['extbase.'] ?? []);
+        if ($requestPluginName && $requestControllerExtensionName && $requestControllerName && $requestControllerActionName) {
+            $configurationManager = GeneralUtility::makeInstance(ConfigurationManager::class);
+            $configurationManager->setConfiguration([
+                'extensionName' => $requestControllerExtensionName,
+                'pluginName' => $requestPluginName,
+            ]);
+            if (!isset($GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['extbase']['extensions'][$requestControllerExtensionName]['plugins'][$requestPluginName]['controllers'])) {
+                $GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['extbase']['extensions'][$requestControllerExtensionName]['plugins'][$requestPluginName]['controllers'] = [
+                    $requestControllerName => [
+                        'actions' => [
+                            $requestControllerActionName,
+                        ],
+                    ],
+                ];
+            }
+            $requestBuilder = GeneralUtility::makeInstance(RequestBuilder::class);
+            $request = $requestBuilder->build($request);
+        }
+        return $request;
+    }
+
+    /**
+     * Compile rendered content objects in variables array ready to assign to the view.
+     */
+    protected function getContentObjectVariables(array $conf): array
+    {
+        $variables = [];
+        $reservedVariables = ['data', 'current'];
+        // Accumulate the variables to be process and loop them through cObjGetSingle
+        $variablesToProcess = (array)($conf['variables.'] ?? []);
+        foreach ($variablesToProcess as $variableName => $cObjType) {
+            if (is_array($cObjType)) {
+                continue;
+            }
+            if (!in_array($variableName, $reservedVariables)) {
+                $cObjConf = $variablesToProcess[$variableName . '.'] ?? [];
+                $variables[$variableName] = $this->cObj->cObjGetSingle($cObjType, $cObjConf, 'variables.' . $variableName);
+            } else {
+                throw new \InvalidArgumentException(
+                    'Cannot use reserved name "' . $variableName . '" as variable name in FLUIDTEMPLATE.',
+                    1288095720
+                );
+            }
+        }
+        $variables['data'] = $this->cObj->data;
+        $variables['current'] = $this->cObj->data[$this->cObj->currentValKey] ?? null;
+        return $variables;
+    }
+
+    protected function applyStandardWrapToFluidPaths(array $paths): array
+    {
+        $finalPaths = [];
+        foreach ($paths as $key => $path) {
+            if (str_ends_with((string)$key, '.')) {
+                if (isset($paths[substr($key, 0, -1)])) {
+                    continue;
+                }
+                $path = $this->cObj->stdWrap('', $path);
+            } elseif (isset($paths[$key . '.'])) {
+                $path = $this->cObj->stdWrap($path, $paths[$key . '.']);
+            }
+            $finalPaths[$key] = GeneralUtility::getFileAbsFileName($path);
+        }
+        return $finalPaths;
+    }
+}

Classes/ContentObject/HierarchicalMenuContentObject.php

@@ -0,0 +1,65 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\Menu\Exception\NoSuchMenuTypeException;
+use TYPO3\CMS\Frontend\ContentObject\Menu\MenuContentObjectFactory;
+
+/**
+ * Contains HMENU class object.
+ */
+class HierarchicalMenuContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject, HMENU
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        if (!empty($conf['if.']) && !$this->cObj->checkIf($conf['if.'])) {
+            return '';
+        }
+
+        $theValue = '';
+        $menuType = $conf[1] ?? '';
+        try {
+            $register = $this->request->getAttribute('frontend.register.stack')->current();
+            $menuObjectFactory = GeneralUtility::makeInstance(MenuContentObjectFactory::class);
+            $menu = $menuObjectFactory->getMenuObjectByType($menuType);
+            $countHMENU = (int)$register->get('count_HMENU', 0);
+            $countHMENU++;
+            $register->set('count_HMENU', $countHMENU);
+            $register->set('count_HMENU_MENUOBJ', 0);
+            $register->set('count_MENUOBJ', 0);
+            $menu->parent_cObj = $this->getContentObjectRenderer();
+            $menu->start(null, $this->getPageRepository(), '', $conf, 1, '', $this->request);
+            $menu->makeMenu();
+            $theValue .= $menu->writeMenu();
+        } catch (NoSuchMenuTypeException) {
+        }
+        $wrap = $this->cObj->stdWrapValue('wrap', $conf);
+        if ($wrap) {
+            $theValue = $this->cObj->wrap($theValue, $wrap);
+        }
+        if (isset($conf['stdWrap.'])) {
+            $theValue = $this->cObj->stdWrap($theValue, $conf['stdWrap.']);
+        }
+        return $theValue;
+    }
+}

Classes/ContentObject/ImageContentObject.php

@@ -0,0 +1,303 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\EventDispatcher\EventDispatcherInterface;
+use Psr\Log\LoggerInterface;
+use Psr\Log\LogLevel;
+use TYPO3\CMS\Core\Page\AssetCollector;
+use TYPO3\CMS\Core\Resource\File;
+use TYPO3\CMS\Core\Resource\FileReference;
+use TYPO3\CMS\Core\Service\MarkerBasedTemplateService;
+use TYPO3\CMS\Core\TimeTracker\TimeTracker;
+use TYPO3\CMS\Core\Type\DocType;
+use TYPO3\CMS\Core\TypoScript\TypoScriptService;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\Event\ModifyImageSourceCollectionEvent;
+use TYPO3\CMS\Frontend\Page\FrontendUrlPrefix;
+
+/**
+ * Contains IMAGE class object.
+ */
+class ImageContentObject extends AbstractContentObject
+{
+    public function __construct(
+        protected readonly MarkerBasedTemplateService $markerTemplateService,
+        protected readonly TimeTracker $timeTracker,
+        protected readonly LoggerInterface $logger,
+    ) {}
+
+    /**
+     * Rendering the cObject, IMAGE
+     *
+     * @param mixed $conf Array of TypoScript properties (marked as "mixed" currently because we don't know what we're receiving)
+     * @return string Output
+     */
+    public function render($conf = []): string
+    {
+        if (!empty($conf['if.']) && !$this->cObj->checkIf($conf['if.'])) {
+            return '';
+        }
+
+        $theValue = $this->cImage($conf['file'] ?? '', is_array($conf) ? $conf : []);
+        if (isset($conf['stdWrap.'])) {
+            $theValue = $this->cObj->stdWrap($theValue, $conf['stdWrap.']);
+        }
+        return $theValue;
+    }
+
+    /**
+     * Returns a <img> tag with the image file defined by $file and processed according to the properties in the TypoScript array.
+     * Mostly this function is a sub-function to the IMAGE function which renders the IMAGE cObject in TypoScript.
+     *
+     * @param string|File|FileReference|null $file File TypoScript resource
+     * @param array $conf TypoScript configuration properties
+     * @return string HTML <img> tag, (possibly wrapped in links and other HTML) if any image found.
+     */
+    protected function cImage($file, array $conf): string
+    {
+        $imageResource = $this->cObj->getImgResource($file, $conf['file.'] ?? []);
+        if ($imageResource === null) {
+            return '';
+        }
+        // $info['originalFile'] will be set, when the file is processed by FAL.
+        // In that case the URL is final and we must not add a prefix
+        if ($imageResource->getOriginalFile() === null && is_file($imageResource->getFullPath())) {
+            $absRefPrefix = GeneralUtility::makeInstance(FrontendUrlPrefix::class)->getUrlPrefix($this->request);
+            $source = $absRefPrefix . str_replace('%2F', '/', rawurlencode($imageResource->getPublicUrl()));
+        } else {
+            $source = $imageResource->getPublicUrl();
+        }
+        // A file whose physical resource is gone (sys_file.missing=1) resolves to
+        // an image resource without public URL. Render nothing in this case, just
+        // like for an image resource that could not be resolved at all.
+        if ($source === null) {
+            $identifier = $imageResource->getOriginalFile()?->getIdentifier() ?: $imageResource->getFullPath();
+            $this->logger->warning('The image "{file}" has no public URL, the file is probably missing, and won\'t be included in frontend output', [
+                'file' => $identifier,
+            ]);
+            $this->timeTracker->setTSlogMessage(
+                'The image "' . $identifier . '" has no public URL, the file is probably missing. It is not rendered.',
+                LogLevel::WARNING
+            );
+            return '';
+        }
+        GeneralUtility::makeInstance(AssetCollector::class)->addMedia(
+            $source,
+            $imageResource->getLegacyImageResourceInformation()
+        );
+
+        $layoutKey = (string)$this->cObj->stdWrapValue('layoutKey', $conf);
+        $imageTagTemplate = $this->getImageTagTemplate($layoutKey, $conf);
+        $sourceCollection = $this->getImageSourceCollection($layoutKey, $conf, $file);
+
+        $altParam = $this->getAltParam($conf);
+        $params = $this->cObj->stdWrapValue('params', $conf);
+        if ($params !== '' && $params[0] !== ' ') {
+            $params = ' ' . $params;
+        }
+
+        $imageTagValues = [
+            'width' =>  $imageResource->getWidth(),
+            'height' => $imageResource->getHeight(),
+            'src' => htmlspecialchars($source),
+            'params' => $params,
+            'altParams' => $altParam,
+            'sourceCollection' => $sourceCollection,
+            'selfClosingTagSlash' => DocType::createFromRequest($this->request)->isXmlCompliant() ? ' /' : '',
+        ];
+
+        $theValue = $this->markerTemplateService->substituteMarkerArray($imageTagTemplate, $imageTagValues, '###|###', true, true);
+
+        $linkWrap = (string)$this->cObj->stdWrapValue('linkWrap', $conf);
+        if ($linkWrap !== '') {
+            $theValue = $this->linkWrap($theValue, $linkWrap);
+        } elseif ($conf['imageLinkWrap'] ?? false) {
+            $originalFile = urldecode($imageResource->getFullPath());
+            $theValue = $this->cObj->imageLinkWrap($theValue, $originalFile, $conf['imageLinkWrap.']);
+        }
+        $wrap = $this->cObj->stdWrapValue('wrap', $conf);
+        if ((string)$wrap !== '') {
+            $theValue = $this->cObj->wrap($theValue, $conf['wrap']);
+        }
+        return $theValue;
+    }
+
+    /**
+     * Returns the html-template for rendering the image-Tag if no template is defined via typoscript the
+     * default <img> tag template is returned
+     *
+     * @param string $layoutKey rendering key
+     * @param array $conf TypoScript configuration properties
+     */
+    protected function getImageTagTemplate($layoutKey, $conf): string
+    {
+        if ($layoutKey && isset($conf['layout.']) && isset($conf['layout.'][$layoutKey . '.'])) {
+            return $this->cObj->stdWrapValue('element', $conf['layout.'][$layoutKey . '.']);
+        }
+        return '<img src="###SRC###" width="###WIDTH###" height="###HEIGHT###" ###PARAMS### ###ALTPARAMS### ###SELFCLOSINGTAGSLASH###>';
+    }
+
+    /**
+     * Render alternate sources for the image tag. If no source collection is given an empty string is returned.
+     *
+     * @param string $layoutKey rendering key
+     * @param array $conf TypoScript configuration properties
+     * @param string|File|FileReference|null $file
+     * @return string
+     */
+    protected function getImageSourceCollection(string $layoutKey, array $conf, $file)
+    {
+        $sourceCollection = '';
+        if ($layoutKey
+            && isset($conf['sourceCollection.']) && $conf['sourceCollection.']
+            && (
+                isset($conf['layout.'][$layoutKey . '.']['source']) && $conf['layout.'][$layoutKey . '.']['source']
+                || isset($conf['layout.'][$layoutKey . '.']['source.']) && $conf['layout.'][$layoutKey . '.']['source.']
+            )
+        ) {
+            // find active sourceCollection
+            $activeSourceCollections = [];
+            foreach ($conf['sourceCollection.'] as $sourceCollectionKey => $sourceCollectionConfiguration) {
+                if (str_ends_with($sourceCollectionKey, '.')) {
+                    if (empty($sourceCollectionConfiguration['if.']) || $this->cObj->checkIf($sourceCollectionConfiguration['if.'])) {
+                        $activeSourceCollections[] = $sourceCollectionConfiguration;
+                    }
+                }
+            }
+
+            // apply option split to configurations
+            $typoScriptService = GeneralUtility::makeInstance(TypoScriptService::class);
+            $srcLayoutOptionSplitted = $typoScriptService->explodeConfigurationForOptionSplit((array)$conf['layout.'][$layoutKey . '.'], count($activeSourceCollections));
+            $eventDispatcher = GeneralUtility::makeInstance(EventDispatcherInterface::class);
+
+            $isXmlCompliant = DocType::createFromRequest($this->request)->isXmlCompliant();
+
+            // render sources
+            foreach ($activeSourceCollections as $key => $sourceConfiguration) {
+                $sourceLayout = $this->cObj->stdWrapValue('source', $srcLayoutOptionSplitted[$key] ?? []);
+
+                $sourceRenderConfiguration = [
+                    'file' => $file,
+                    'file.' => $conf['file.'] ?? null,
+                ];
+
+                $imageQuality = $this->cObj->stdWrapValue('quality', $sourceConfiguration ?? []);
+                if ($imageQuality) {
+                    $sourceRenderConfiguration['file.']['params'] = '-quality ' . (int)$imageQuality;
+                }
+
+                $pixelDensity = (int)$this->cObj->stdWrapValue('pixelDensity', $sourceConfiguration, 1);
+                $dimensionKeys = ['width', 'height', 'maxW', 'minW', 'maxH', 'minH', 'maxWidth', 'maxHeight', 'XY'];
+                foreach ($dimensionKeys as $dimensionKey) {
+                    $dimension = (string)$this->cObj->stdWrapValue($dimensionKey, $sourceConfiguration);
+                    if ($dimension === '') {
+                        $dimension = (string)$this->cObj->stdWrapValue($dimensionKey, $conf['file.'] ?? []);
+                    }
+                    if ($dimension !== '') {
+                        if (str_contains($dimension, 'c') && ($dimensionKey === 'width' || $dimensionKey === 'height')) {
+                            $dimensionParts = explode('c', $dimension, 2);
+                            $dimension = ((int)$dimensionParts[0] * $pixelDensity) . 'c';
+                            if ($dimensionParts[1]) {
+                                $dimension .= $dimensionParts[1];
+                            }
+                        } elseif ($dimensionKey === 'XY') {
+                            $dimensionParts = GeneralUtility::intExplode(',', $dimension);
+                            $dimension = $dimensionParts[0] * $pixelDensity;
+                            if ($dimensionParts[1]) {
+                                $dimension .= ',' . $dimensionParts[1] * $pixelDensity;
+                            }
+                        } else {
+                            $dimension = (int)$dimension * $pixelDensity;
+                        }
+                        $sourceRenderConfiguration['file.'][$dimensionKey] = $dimension;
+                        // Remove the stdWrap properties for dimension as they have been processed already above.
+                        unset($sourceRenderConfiguration['file.'][$dimensionKey . '.']);
+                    }
+                }
+                $imageResource = $this->cObj->getImgResource($sourceRenderConfiguration['file'], $sourceRenderConfiguration['file.']);
+                if ($imageResource !== null) {
+                    $sourceConfiguration['width'] = $imageResource->getWidth();
+                    $sourceConfiguration['height'] = $imageResource->getHeight();
+
+                    $urlPrefix = '';
+                    // Prepend 'absRefPrefix' to file path only if file was not processed by FAL, e.g. GIFBUILDER
+                    if ($imageResource->getOriginalFile() === null && is_file($imageResource->getFullPath())) {
+                        $urlPrefix = GeneralUtility::makeInstance(FrontendUrlPrefix::class)->getUrlPrefix($this->request);
+                    }
+
+                    $sourceConfiguration['src'] = htmlspecialchars($urlPrefix . $imageResource->getPublicUrl());
+                    $sourceConfiguration['selfClosingTagSlash'] = $isXmlCompliant ? ' /' : '';
+
+                    $oneSourceCollection = $this->markerTemplateService->substituteMarkerArray($sourceLayout, $sourceConfiguration, '###|###', true, true);
+
+                    $sourceCollection .= $eventDispatcher->dispatch(
+                        new ModifyImageSourceCollectionEvent($oneSourceCollection, $sourceCollection, (array)$sourceConfiguration, $sourceRenderConfiguration, $this->cObj)
+                    )->getSourceCollection();
+                }
+            }
+        }
+        return $sourceCollection;
+    }
+
+    /**
+     * Wraps the input string by the $wrap value and implements the "linkWrap" data type as well.
+     *
+     * The "linkWrap" data type means that this function will find any integer encapsulated
+     * in {} (curly braces) in the first wrap part and substitute it with the corresponding page
+     * uid from the rootline where the found integer is pointing to the key in the rootline.
+     *
+     * @param string $content Input string
+     * @param string $wrap A string where the first two parts separated by "|" (vertical line) will be wrapped around the input string
+     */
+    protected function linkWrap(string $content, string $wrap): string
+    {
+        $wrapArr = explode('|', $wrap);
+        if (preg_match('/\\{([0-9]*)\\}/', $wrapArr[0], $reg)) {
+            $localRootLine = $this->request->getAttribute('frontend.page.information')->getLocalRootLine();
+            $uid = $localRootLine[$reg[1]]['uid'] ?? null;
+            if ($uid) {
+                $wrapArr[0] = str_replace($reg[0], $uid, $wrapArr[0]);
+            }
+        }
+        return trim($wrapArr[0]) . $content . trim($wrapArr[1] ?? '');
+    }
+
+    /**
+     * An abstraction method which creates an alt or title parameter for an HTML img, applet, area or input element and the FILE content element.
+     * From the $conf array it implements the properties "altText" and "titleText"
+     *
+     * @param array $conf TypoScript configuration properties
+     * @return string Parameter string containing alt and title parameters (if any)
+     */
+    protected function getAltParam(array $conf): string
+    {
+        $altText = trim((string)$this->cObj->stdWrapValue('altText', $conf));
+        $titleText = trim((string)$this->cObj->stdWrapValue('titleText', $conf));
+
+        // "alt":
+        $altParam = ' alt="' . htmlspecialchars($altText) . '"';
+        // "title":
+        $emptyTitleHandling = $this->cObj->stdWrapValue('emptyTitleHandling', $conf);
+        // Choices: 'keepEmpty' | 'useAlt' | 'removeAttr'
+        if ($titleText || $emptyTitleHandling === 'keepEmpty') {
+            $altParam .= ' title="' . htmlspecialchars($titleText) . '"';
+        } elseif ($emptyTitleHandling === 'useAlt') {
+            $altParam .= ' title="' . htmlspecialchars($altText) . '"';
+        }
+        return $altParam;
+    }
+}

Classes/ContentObject/ImageResourceContentObject.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/**
+ * Contains IMG_RESOURCE class object.
+ */
+class ImageResourceContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject, IMG_RESOURCE
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        $imageResource = $this->cObj->getImgResource($conf['file'] ?? '', $conf['file.'] ?? []);
+        if ($imageResource === null) {
+            return '';
+        }
+        return isset($conf['stdWrap.'])
+            ? $this->cObj->stdWrap($imageResource->getPublicUrl(), $conf['stdWrap.'])
+            : $imageResource->getPublicUrl();
+    }
+}

Classes/ContentObject/LoadRegisterContentObject.php

@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/**
+ * Implement cObj "LOAD_REGISTER":
+ * Get latest Register, clone it, set a key/value, push as new latest RegisterStack entry.
+ *
+ * Note the naming "LOAD_REGISTER" is kinda misleading since it rather "loads into" or
+ * sets a new value and pushes as key/value to the stack. "RESTORE_REGISTER" is the
+ * counterpart cObj to get rid of that state again.
+ */
+class LoadRegisterContentObject extends AbstractContentObject
+{
+    /**
+     * Does not return any content, it just sets internal data based on the TypoScript properties.
+     *
+     * @param mixed $conf Array of TypoScript properties (marked as "mixed" currently because we don't know what we're receiving)
+     * @return string Empty string
+     */
+    public function render($conf = []): string
+    {
+        $registerStack = $this->request->getAttribute('frontend.register.stack');
+        $clonedRegister = clone $registerStack->current();
+        if (is_array($conf)) {
+            $isExecuted = [];
+            foreach ($conf as $key => $value) {
+                $key = rtrim($key, '.');
+                if (!isset($isExecuted[$key])) {
+                    $registerProperties = $key . '.';
+                    if (isset($conf[$key]) && isset($conf[$registerProperties])) {
+                        $value = $this->cObj->stdWrap($conf[$key], $conf[$registerProperties]);
+                    } elseif (isset($conf[$registerProperties])) {
+                        $value = $this->cObj->stdWrap('', $conf[$registerProperties]);
+                    }
+                    $clonedRegister->set($key, $value);
+                    $isExecuted[$key] = true;
+                }
+            }
+        }
+        $registerStack->push($clonedRegister);
+        return '';
+    }
+}

Classes/ContentObject/Menu/CategoryMenuUtility.php

@@ -0,0 +1,117 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Menu;
+
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\Category\Collection\CategoryCollection;
+
+/**
+ * Utility class for menus based on category collections of pages.
+ *
+ * Returns all the relevant pages for rendering with a menu content object.
+ * @internal this is only used for internal purposes and solely used for EXT:frontend and not part of TYPO3's Core API.
+ */
+class CategoryMenuUtility
+{
+    /**
+     * @var string Name of the field used for sorting the pages
+     */
+    protected static $sortingField;
+
+    /**
+     * Collects all pages for the selected categories, sorted according to configuration.
+     *
+     * @param string $selectedCategories Comma-separated list of system categories primary keys
+     * @param array|null $configuration TypoScript configuration for the "special." keyword
+     * @param AbstractMenuContentObject $parentObject Back-reference to the calling object
+     * @return array List of selected pages
+     */
+    public function collectPages($selectedCategories, $configuration, $parentObject)
+    {
+        $selectedPages = [];
+        $categoriesPerPage = [];
+        // Determine the name of the relation field
+        $relationField = (string)$parentObject->getParentContentObject()->stdWrapValue('relation', $configuration ?? []);
+        // Get the pages for each selected category
+        $selectedCategories = GeneralUtility::intExplode(',', $selectedCategories, true);
+        foreach ($selectedCategories as $aCategory) {
+            $collection = CategoryCollection::load(
+                $aCategory,
+                true,
+                'pages',
+                $relationField
+            );
+            $categoryUid = $collection->getUid();
+            // Loop on the results, overlay each page record found
+            foreach ($collection as $pageItem) {
+                $parentObject->getSysPage()->versionOL('pages', $pageItem, true);
+                if (is_array($pageItem)) {
+                    $selectedPages[$pageItem['uid']] = $parentObject->getSysPage()->getLanguageOverlay('pages', $pageItem);
+                    // Keep a list of the categories each page belongs to
+                    if (!isset($categoriesPerPage[$pageItem['uid']])) {
+                        $categoriesPerPage[$pageItem['uid']] = [];
+                    }
+                    $categoriesPerPage[$pageItem['uid']][] = $categoryUid;
+                }
+            }
+        }
+        // Loop on the selected pages to add the categories they belong to, as comma-separated list of category uid's)
+        // (this makes them available for rendering, if needed)
+        foreach ($selectedPages as $uid => $pageRecord) {
+            $selectedPages[$uid]['_categories'] = implode(',', $categoriesPerPage[$uid]);
+        }
+
+        // Sort the pages according to the sorting property
+        self::$sortingField = (string)$parentObject->getParentContentObject()->stdWrapValue('sorting', $configuration ?? []);
+        $order = (string)$parentObject->getParentContentObject()->stdWrapValue('order', $configuration ?? []);
+        $selectedPages = $this->sortPages($selectedPages, $order);
+
+        return $selectedPages;
+    }
+
+    /**
+     * Sorts the selected pages
+     *
+     * If the sorting field is not defined or does not corresponding to an existing field
+     * of the "pages" tables, the list of pages will remain unchanged.
+     *
+     * @param array $pages List of selected pages
+     * @param string $order Order for sorting (should "asc" or "desc")
+     * @return array Sorted list of pages
+     */
+    protected function sortPages($pages, $order)
+    {
+        // Perform the sorting only if a criterion was actually defined
+        if (!empty(self::$sortingField)) {
+            // Check that the sorting field exists (checking the first record is enough)
+            $firstPage = current($pages);
+            if (isset($firstPage[self::$sortingField])) {
+                // Make sure the order property is either "asc" or "desc" (default is "asc")
+                if (!empty($order)) {
+                    $order = strtolower($order);
+                    if ($order !== 'desc') {
+                        $order = 'asc';
+                    }
+                }
+                $sortMultiplier = $order === 'asc' ? 1 : -1;
+                uasort($pages, static function (array $pageA, array $pageB) use ($sortMultiplier): int {
+                    return strnatcasecmp($pageA[self::$sortingField], $pageB[self::$sortingField]) * $sortMultiplier;
+                });
+            }
+        }
+        return $pages;
+    }
+}

Classes/ContentObject/Menu/Exception/NoSuchMenuTypeException.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Menu\Exception;
+
+use TYPO3\CMS\Frontend\Exception;
+
+/**
+ * No such menu type exception
+ */
+class NoSuchMenuTypeException extends Exception {}

Classes/ContentObject/Menu/MenuContentObjectFactory.php

@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Menu;
+
+use TYPO3\CMS\Core\SingletonInterface;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\Menu\Exception\NoSuchMenuTypeException;
+
+/**
+ * Factory for menu content objects. Allows overriding the default
+ * types like 'TMENU' with an own implementation (only one possible)
+ * and new types can be registered.
+ * @internal this is only used for internal purposes and solely used for EXT:frontend and not part of TYPO3's Core API.
+ */
+class MenuContentObjectFactory implements SingletonInterface
+{
+    /**
+     * Register of TypoScript keys to according render class
+     */
+    protected array $menuTypeToClassMapping = [
+        'TMENU' => TextMenuContentObject::class,
+    ];
+
+    /**
+     * Gets a typo script string like 'TMENU' and returns an object of this type
+     *
+     * @throws Exception\NoSuchMenuTypeException
+     */
+    public function getMenuObjectByType(string $type = ''): AbstractMenuContentObject
+    {
+        $upperCasedClassName = strtoupper($type);
+        if (array_key_exists($upperCasedClassName, $this->menuTypeToClassMapping)) {
+            /** @var AbstractMenuContentObject $object */
+            $object = GeneralUtility::makeInstance($this->menuTypeToClassMapping[$upperCasedClassName]);
+            return $object;
+        }
+        throw new NoSuchMenuTypeException(
+            'Menu type ' . (string)$type . ' has no implementing class.',
+            1363278130
+        );
+    }
+
+    /**
+     * Register new menu type or override existing type
+     *
+     * @param string $type Menu type to be used in TypoScript
+     * @param string $className Class rendering the menu
+     */
+    public function registerMenuType(string $type, string $className)
+    {
+        $this->menuTypeToClassMapping[strtoupper($type)] = $className;
+    }
+}

Classes/ContentObject/Menu/TextMenuContentObject.php

@@ -0,0 +1,166 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject\Menu;
+
+use TYPO3\CMS\Core\TypoScript\TypoScriptService;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+
+/**
+ * Extension class creating text based menus
+ */
+class TextMenuContentObject extends AbstractMenuContentObject
+{
+    /**
+     * Traverses the ->result array of menu items configuration (made by ->generate()) and renders each item.
+     * An instance of ContentObjectRenderer is also made and for each menu item rendered it is loaded with
+     * the record for that page so that any stdWrap properties that applies will have the current menu items record available.
+     *
+     * @return string The HTML for the menu including submenus
+     */
+    public function writeMenu()
+    {
+        if (empty($this->result)) {
+            return '';
+        }
+
+        $register = $this->request->getAttribute('frontend.register.stack')->current();
+        $cObjectForCurrentMenu = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+        $menuContent = [];
+        $typoScriptService = GeneralUtility::makeInstance(TypoScriptService::class);
+        $subMenuObjSuffixes = $typoScriptService->explodeConfigurationForOptionSplit(['sOSuffix' => $this->mconf['submenuObjSuffixes'] ?? null], count($this->result));
+        $explicitSpacerRenderingEnabled = ($this->mconf['SPC'] ?? false);
+        foreach ($this->result as $key => $val) {
+            $register->set('count_HMENU_MENUOBJ', (int)$register->get('count_HMENU_MENUOBJ', 0) + 1);
+            $register->set('count_MENUOBJ', (int)$register->get('count_MENUOBJ', 0) + 1);
+
+            // Initialize the cObj with the page record of the menu item
+            $cObjectForCurrentMenu->setRequest($this->request);
+            $cObjectForCurrentMenu->start($this->menuArr[$key], 'pages');
+            $this->I = [];
+            $this->I['key'] = $key;
+            $this->I['val'] = $val;
+            $this->I['title'] = $this->getPageTitle($this->menuArr[$key]['title'] ?? '', $this->menuArr[$key]['nav_title'] ?? '');
+            $this->I['title.'] = $this->I['val']['stdWrap.'] ?? [];
+            $this->I['title'] = $cObjectForCurrentMenu->stdWrapValue('title', $this->I);
+            $this->I['uid'] = $this->menuArr[$key]['uid'] ?? 0;
+            $this->I['mount_pid'] = $this->menuArr[$key]['mount_pid'] ?? 0;
+            $this->I['pid'] = $this->menuArr[$key]['pid'] ?? 0;
+            $this->I['spacer'] = $this->menuArr[$key]['isSpacer'] ?? false;
+            // Make link tag
+            $this->I['val']['additionalParams'] = $cObjectForCurrentMenu->stdWrapValue('additionalParams', $this->I['val']);
+            $linkResult = $this->link((int)$key, (string)($this->I['val']['altTarget'] ?? ''), ($this->mconf['forceTypeValue'] ?? ''));
+            if ($linkResult === null) {
+                $this->I['val']['doNotLinkIt'] = 1;
+            }
+            // Title attribute of links
+            $titleAttrValue = $cObjectForCurrentMenu->stdWrapValue('ATagTitle', $this->I['val']);
+            if ($linkResult && $titleAttrValue !== '') {
+                $linkResult = $linkResult->withAttribute('title', $titleAttrValue);
+            }
+            $this->I['linkHREF'] = $linkResult;
+            $this->I['val']['doNotLinkIt'] = (bool)$cObjectForCurrentMenu->stdWrapValue('doNotLinkIt', $this->I['val']);
+            // Compile link tag
+            if (!$this->I['spacer'] && !$this->I['val']['doNotLinkIt']) {
+                $this->setATagParts($linkResult);
+            } else {
+                $this->I['A1'] = '';
+                $this->I['A2'] = '';
+            }
+            // ATagBeforeWrap processing:
+            if ($this->I['val']['ATagBeforeWrap'] ?? false) {
+                $wrapPartsBefore = explode('|', $this->I['val']['linkWrap'] ?? '');
+                $wrapPartsAfter = ['', ''];
+            } else {
+                $wrapPartsBefore = ['', ''];
+                $wrapPartsAfter = explode('|', $this->I['val']['linkWrap'] ?? '');
+            }
+            if (($this->I['val']['stdWrap2'] ?? false) || isset($this->I['val']['stdWrap2.'])) {
+                $stdWrap2 = (string)(isset($this->I['val']['stdWrap2.']) ? $cObjectForCurrentMenu->stdWrap('|', $this->I['val']['stdWrap2.']) : '|');
+                $stdWrap2Value = (string)($this->I['val']['stdWrap2'] ?? '|');
+                $stdWrap2Value = $stdWrap2Value !== '' ? $stdWrap2Value : '|';
+                $wrapPartsStdWrap = explode($stdWrap2Value, $stdWrap2);
+            } else {
+                $wrapPartsStdWrap = ['', ''];
+            }
+            // Make before, middle and after parts
+            $this->I['parts'] = [];
+            $this->I['parts']['before'] = $this->getBeforeAfter('before', $cObjectForCurrentMenu);
+            $this->I['parts']['stdWrap2_begin'] = $wrapPartsStdWrap[0];
+            // stdWrap for doNotShowLink
+            $this->I['val']['doNotShowLink'] = $cObjectForCurrentMenu->stdWrapValue('doNotShowLink', $this->I['val']);
+            if (!$this->I['val']['doNotShowLink']) {
+                $this->I['parts']['notATagBeforeWrap_begin'] = $wrapPartsAfter[0];
+                $this->I['parts']['ATag_begin'] = $this->I['A1'];
+                $this->I['parts']['ATagBeforeWrap_begin'] = $wrapPartsBefore[0];
+                $this->I['parts']['title'] = $this->I['title'];
+                $this->I['parts']['ATagBeforeWrap_end'] = $wrapPartsBefore[1] ?? '';
+                $this->I['parts']['ATag_end'] = $this->I['A2'];
+                $this->I['parts']['notATagBeforeWrap_end'] = $wrapPartsAfter[1] ?? '';
+            }
+            $this->I['parts']['stdWrap2_end'] = $wrapPartsStdWrap[1] ?? '';
+            $this->I['parts']['after'] = $this->getBeforeAfter('after', $cObjectForCurrentMenu);
+            // Passing I to a user function
+            if ($this->mconf['IProcFunc'] ?? false) {
+                $this->I = $this->userProcess('IProcFunc', $this->I);
+            }
+            // Merge parts + beforeAllWrap
+            $this->I['theItem'] = implode('', $this->I['parts']);
+            $allWrap = $cObjectForCurrentMenu->stdWrapValue('allWrap', $this->I['val']);
+            $this->I['theItem'] = $cObjectForCurrentMenu->wrap($this->I['theItem'], $allWrap);
+            if ($this->I['val']['subst_elementUid'] ?? false) {
+                $this->I['theItem'] = str_replace('{elementUid}', (string)$this->I['uid'], $this->I['theItem']);
+            }
+            if (is_array($this->I['val']['allStdWrap.'] ?? null)) {
+                $this->I['theItem'] = $cObjectForCurrentMenu->stdWrap($this->I['theItem'], $this->I['val']['allStdWrap.']);
+            }
+            $isSpacerPage = $this->I['spacer'] ?? false;
+            // If rendering of SPACERs is enabled, also allow rendering submenus with Spacers
+            if (!$isSpacerPage || $explicitSpacerRenderingEnabled) {
+                // Add part to the accumulated result + fetch submenus
+                $this->I['theItem'] .= $this->subMenu($this->I['uid'], $subMenuObjSuffixes[$key]['sOSuffix'] ?? '', $key);
+            }
+            $part = $cObjectForCurrentMenu->stdWrapValue('wrapItemAndSub', $this->I['val']);
+            $menuContent[] = $part ? $cObjectForCurrentMenu->wrap($this->I['theItem'], $part) : $this->I['theItem'];
+        }
+
+        $menuContent = implode('', $menuContent);
+        if (is_array($this->mconf['stdWrap.'] ?? null)) {
+            $menuContent = (string)$cObjectForCurrentMenu->stdWrap($menuContent, $this->mconf['stdWrap.']);
+        }
+        return $cObjectForCurrentMenu->wrap($menuContent, $this->mconf['wrap'] ?? '');
+    }
+
+    /**
+     * Generates the before* and after* stdWrap for TMENUs
+     * Evaluates:
+     * - before.stdWrap*
+     * - beforeWrap
+     * - after.stdWrap*
+     * - afterWrap
+     *
+     * @param string $pref Can be "before" or "after" and determines which kind of stdWrap to process (basically this is the prefix of the TypoScript properties that are read from the ->I['val'] array
+     * @return string The resulting HTML
+     */
+    protected function getBeforeAfter(string $pref, ContentObjectRenderer $cObjectForCurrentMenu): string
+    {
+        $processedPref = $cObjectForCurrentMenu->stdWrapValue($pref, $this->I['val']);
+        if (isset($this->I['val'][$pref . 'Wrap'])) {
+            return $cObjectForCurrentMenu->wrap($processedPref, $this->I['val'][$pref . 'Wrap']);
+        }
+        return $processedPref;
+    }
+}

Classes/ContentObject/PageViewContentObject.php

@@ -0,0 +1,175 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use TYPO3\CMS\Core\Information\Typo3Information;
+use TYPO3\CMS\Core\Page\PageLayoutResolver;
+use TYPO3\CMS\Core\TypoScript\TypoScriptService;
+use TYPO3\CMS\Core\Utility\PathUtility;
+use TYPO3\CMS\Core\View\ViewFactoryData;
+use TYPO3\CMS\Core\View\ViewFactoryInterface;
+use TYPO3\CMS\Frontend\ContentObject\Exception\ContentRenderingException;
+use TYPO3Fluid\Fluid\View\Exception\InvalidLayoutException;
+use TYPO3Fluid\Fluid\View\Exception\InvalidPartialException;
+use TYPO3Fluid\Fluid\View\Exception\InvalidTemplateResourceException;
+
+/**
+ * PAGEVIEW Content Object.
+ *
+ * Built to render a full page with Fluid, and does the following
+ * - uses the template from the given Page Layout / Backend Layout of the current page in a folder "Pages/Mylayout.html"
+ * - paths are resolved from "paths." configuration
+ * - automatically adds templateRootPaths to the layoutRootPaths and partialRootPaths
+ * - injects pageInformation, site and siteLanguage (= language) as variables by default
+ * - adds all page settings (= TypoScript constants) into the settings variable of the View
+ *
+ * In contrast to FLUIDTEMPLATE, by design this cObject
+ * - does not handle custom layoutRootPaths and partialRootPaths
+ * - does not handle Extbase specialities
+ * - does not handle "templateName.", "template." and "file." resolving from cObject
+ */
+final class PageViewContentObject extends AbstractContentObject
+{
+    private const array reservedVariables = ['site', 'language', 'page'];
+
+    public function __construct(
+        private readonly ContentDataProcessor $contentDataProcessor,
+        private readonly TypoScriptService $typoScriptService,
+        private readonly PageLayoutResolver $pageLayoutResolver,
+        private readonly ViewFactoryInterface $viewFactory,
+    ) {}
+
+    /**
+     * Rendering the cObject, PAGEVIEW
+     *
+     * Configuration properties:
+     *  - paths array to template files
+     *  - variables array of cObjects, the keys are the variable names in fluid
+     *  - dataProcessing array of data processors which are classes to manipulate $data
+     *
+     * Example:
+     *   page.10 = PAGEVIEW
+     *   page.10.paths.10 = EXT:site_configuration/Resources/Private/Templates/
+     *   page.10.variables {
+     *     mylabel = TEXT
+     *     mylabel.value = Label from TypoScript
+     *   }
+     *
+     * @param mixed $conf Array of TypoScript properties (marked as "mixed" currently because we don't know what we're receiving)
+     * @return string The HTML output
+     * @throws ContentRenderingException
+     */
+    public function render($conf = []): string
+    {
+        if (!is_array($conf)) {
+            $conf = [];
+        }
+        if (!is_array($conf['paths.'] ?? false) || $conf['paths.'] === []) {
+            throw new ContentRenderingException(
+                'PAGEVIEW content object needs a "paths." TypoScript array',
+                1724601907
+            );
+        }
+        $paths = array_map(PathUtility::sanitizeTrailingSeparator(...), $conf['paths.']);
+        $viewFactoryData = new ViewFactoryData(
+            // @todo: Do discuss: Rename 'paths.' to 'templateRootPaths.' again?
+            templateRootPaths: array_map(static fn(string $path): string => $path . 'Pages/', $paths),
+            // @todo: We should *still* allow setting both partialRootPaths and layoutRootPaths, and only fall back to
+            //        [templateRootPaths]/Partials and [templateRootPaths]/Layouts if not set. And the fallback should be
+            //        advertised as best practice.
+            partialRootPaths: array_map(static fn(string $path): string => $path . 'Partials/', $paths),
+            layoutRootPaths: array_map(static fn(string $path): string => $path . 'Layouts/', $paths),
+            request: $this->request,
+        );
+        $view = $this->viewFactory->create($viewFactoryData);
+
+        $pageSettings = $this->request->getAttribute('frontend.typoscript')->getSettingsTree()->toArray();
+        $view->assign('settings', $this->typoScriptService->convertTypoScriptArrayToPlainArray($pageSettings));
+        $variables = $this->getContentObjectVariables($conf);
+        $variables = $this->contentDataProcessor->process($this->cObj, $conf, $variables);
+        $view->assignMultiple($variables);
+
+        // Fetch the Fluid template by the name of the Page Layout and underneath "Pages"
+        $pageInformationObject = $this->request->getAttribute('frontend.page.information');
+        $pageLayoutName = $this->pageLayoutResolver->getLayoutIdentifierForPageWithoutPrefix(
+            $pageInformationObject->getPageRecord(),
+            $pageInformationObject->getRootLine()
+        );
+        try {
+            return $view->render($pageLayoutName);
+        } catch (InvalidTemplateResourceException $e) {
+            // Only add a PAGEVIEW specific message in case the exception has been thrown for the given template.
+            if ($e instanceof InvalidPartialException || $e instanceof InvalidLayoutException || $e->templateName !== 'Default/' . $pageLayoutName) {
+                throw $e;
+            }
+            throw new InvalidTemplateResourceException(
+                sprintf(
+                    'PAGEVIEW TypoScript object: Failed to resolve a template file for page layout "%s". See also: %s. The following paths were checked: "%s"',
+                    $pageLayoutName,
+                    Typo3Information::getDocsLink('t3tsref:cobj-pageview'),
+                    implode('", "', $e->evaluatedTemplatePaths),
+                ),
+                1742058289,
+                $e,
+                $e->templateName,
+                $e->evaluatedTemplatePaths,
+            );
+        }
+    }
+
+    /**
+     * Compile rendered content objects in variables array ready to assign to the view
+     *
+     * @param array $conf Configuration array
+     * @return array the variables to be assigned
+     */
+    private function getContentObjectVariables(array $conf): array
+    {
+        $pageInformation = $this->request->getAttribute('frontend.page.information');
+        $variables = [
+            'site' => $this->request->getAttribute('site'),
+            'language' => $this->request->getAttribute('language'),
+            'page' => $pageInformation,
+        ];
+        // Accumulate the variables to be process and loop them through cObjGetSingle
+        if (is_array($conf['variables.'] ?? false) && $conf['variables.'] !== []) {
+            foreach ($conf['variables.'] as $variableName => $cObjType) {
+                if (!is_string($cObjType)) {
+                    continue;
+                }
+                if (in_array($variableName, self::reservedVariables, true)) {
+                    throw new \InvalidArgumentException(
+                        'Cannot use reserved name "' . $variableName . '" as variable name in PAGEVIEW.',
+                        1711748615
+                    );
+                }
+                $cObjConf = $conf['variables.'][$variableName . '.'] ?? [];
+                $variables[$variableName] = $this->cObj->cObjGetSingle($cObjType, $cObjConf, 'variables.' . $variableName);
+            }
+        }
+        if (!($conf['contentAs'] ?? false) && isset($variables['content'])) {
+            throw new \InvalidArgumentException(
+                'No variable name ("contentAs" option) for the content areas has been defined in PAGEVIEW, and the fallback name "content" is not available because it has been manually set.',
+                1726475574
+            );
+        }
+
+        $variables[$conf['contentAs'] ?? 'content'] = $pageInformation->getPageLayout()?->getContentAreas()->withRequest($this->request);
+        return $variables;
+    }
+}

Classes/ContentObject/RecordsContentObject.php

@@ -0,0 +1,224 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\Log\LogLevel;
+use TYPO3\CMS\Core\Database\RelationHandler;
+use TYPO3\CMS\Core\TimeTracker\TimeTracker;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\Category\Collection\CategoryCollection;
+
+/**
+ * Contains RECORDS class object.
+ */
+class RecordsContentObject extends AbstractContentObject
+{
+    /**
+     * List of all items with table and uid information
+     *
+     * @var array
+     */
+    protected $itemArray = [];
+
+    /**
+     * List of all selected records with full data, arranged per table
+     *
+     * @var array
+     */
+    protected $data = [];
+
+    public function __construct(protected readonly TimeTracker $timeTracker) {}
+
+    /**
+     * Rendering the cObject, RECORDS
+     *
+     * @param mixed $conf Array of TypoScript properties (marked as "mixed" currently because we don't know what we're receiving)
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        // Reset items and data
+        $this->itemArray = [];
+        $this->data = [];
+
+        $theValue = '';
+
+        $tables = (string)$this->cObj->stdWrapValue('tables', $conf ?? []);
+        if ($tables !== '') {
+            $tablesArray = array_unique(GeneralUtility::trimExplode(',', $tables, true));
+            // Add tables which have a configuration (note that this may create duplicate entries)
+            if (is_array($conf['conf.'] ?? false)) {
+                foreach ($conf['conf.'] as $key => $value) {
+                    if (!str_ends_with($key, '.') && !in_array($key, $tablesArray)) {
+                        $tablesArray[] = $key;
+                    }
+                }
+            }
+
+            // Get the data, depending on collection method.
+            // Property "source" is considered more precise and thus takes precedence over "categories"
+            $source = (string)$this->cObj->stdWrapValue('source', $conf ?? []);
+            $categories = (string)$this->cObj->stdWrapValue('categories', $conf ?? []);
+            if ($source !== '') {
+                $this->collectRecordsFromSource($source, $tablesArray);
+            } elseif ($categories !== '') {
+                $relationField = (string)$this->cObj->stdWrapValue('relation', $conf['categories.'] ?? []);
+                $this->collectRecordsFromCategories($categories, $tablesArray, $relationField);
+            }
+            if (!empty($this->itemArray)) {
+                $cObj = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+                $cObj->setParent($this->cObj->data, $this->cObj->currentRecord);
+                $pageRepository = $this->getPageRepository();
+                foreach ($this->itemArray as $val) {
+                    $row = $this->data[$val['table']][$val['id']] ?? null;
+                    if (!is_array($row)) {
+                        continue;
+                    }
+                    // Perform overlays if necessary (records coming from category collections are already overlaid)
+                    if ($source !== '') {
+                        // Versioning preview
+                        $pageRepository->versionOL($val['table'], $row);
+                        // Language overlay
+                        if (is_array($row)) {
+                            $row = $pageRepository->getLanguageOverlay($val['table'], $row);
+                        }
+                    }
+                    // Might be unset during the overlay process
+                    if (!is_array($row)) {
+                        continue;
+                    }
+                    if ($this->isRecordsPageAccessible($val['table'], $row, $conf)) {
+                        $renderObjName = ($conf['conf.'][$val['table']] ?? false) ? $conf['conf.'][$val['table']] : '<' . $val['table'];
+                        $renderObjKey = ($conf['conf.'][$val['table']] ?? false) ? 'conf.' . $val['table'] : '';
+                        $renderObjConf = ($conf['conf.'][$val['table'] . '.'] ?? false) ? $conf['conf.'][$val['table'] . '.'] : [];
+                        $this->cObj->lastChanged($row['tstamp'] ?? 0);
+                        $cObj->setRequest($this->request);
+                        $cObj->start($row, $val['table']);
+                        $tmpValue = $cObj->cObjGetSingle($renderObjName, $renderObjConf, $renderObjKey);
+                        $theValue .= $tmpValue;
+                    }
+                }
+            }
+        }
+        $wrap = $this->cObj->stdWrapValue('wrap', $conf);
+        if ($wrap) {
+            $theValue = $this->cObj->wrap($theValue, $wrap);
+        }
+        if (isset($conf['stdWrap.'])) {
+            $theValue = $this->cObj->stdWrap($theValue, $conf['stdWrap.']);
+        }
+        return $theValue;
+    }
+
+    /**
+     * Checks if the records page is accessible
+     */
+    protected function isRecordsPageAccessible(string $table, array $row, array $conf): bool
+    {
+        $pageId = (int)($table === 'pages' ? $row['uid'] : $row['pid']);
+        if ($pageId === $this->request->getAttribute('frontend.page.information')->getId()) {
+            // Access to current page has already been checked before rendering this content object.
+            return true;
+        }
+        if ($this->cObj->stdWrapValue('dontCheckPid', $conf)) {
+            return true;
+        }
+        $validPageId = $this->getPageRepository()->filterAccessiblePageIds([$pageId]);
+        return $validPageId !== [];
+    }
+
+    /**
+     * Collects records according to the configured source
+     *
+     * @param string $source Source of records
+     * @param array $tables List of tables
+     */
+    protected function collectRecordsFromSource($source, array $tables)
+    {
+        $loadDB = GeneralUtility::makeInstance(RelationHandler::class);
+        $loadDB->start($source, implode(',', $tables));
+        foreach ($loadDB->tableArray as $table => $v) {
+            $constraints = $this->getPageRepository()->getDefaultConstraints($table);
+            if ($constraints !== []) {
+                $loadDB->additionalWhere[$table] = implode(' AND ', $constraints);
+            }
+        }
+        $this->data = $loadDB->getFromDB();
+        reset($loadDB->itemArray);
+        $this->itemArray = $loadDB->itemArray;
+    }
+
+    /**
+     * Collects records for all selected tables and categories.
+     *
+     * @param string $selectedCategories Comma-separated list of categories
+     * @param array $tables List of tables
+     * @param string $relationField Name of the field containing the categories relation
+     */
+    protected function collectRecordsFromCategories($selectedCategories, array $tables, $relationField)
+    {
+        $selectedCategories = array_unique(GeneralUtility::intExplode(',', $selectedCategories, true));
+
+        // Loop on all selected tables
+        foreach ($tables as $table) {
+            // Get the records for each selected category
+            $tableRecords = [];
+            $categoriesPerRecord = [];
+            foreach ($selectedCategories as $aCategory) {
+                try {
+                    $collection = CategoryCollection::load(
+                        $aCategory,
+                        true,
+                        $table,
+                        $relationField
+                    );
+                    if ($collection->count() > 0) {
+                        // Add items to the collection of records for the current table
+                        foreach ($collection as $item) {
+                            $tableRecords[$item['uid']] = $item;
+                            // Keep track of all categories a given item belongs to
+                            if (!isset($categoriesPerRecord[$item['uid']])) {
+                                $categoriesPerRecord[$item['uid']] = [];
+                            }
+                            $categoriesPerRecord[$item['uid']][] = $aCategory;
+                        }
+                    }
+                } catch (\Exception $e) {
+                    $message = sprintf(
+                        'Could not get records for category id %d. Error: %s (%d)',
+                        $aCategory,
+                        $e->getMessage(),
+                        $e->getCode()
+                    );
+                    $this->timeTracker->setTSlogMessage($message, LogLevel::WARNING);
+                }
+            }
+            // Store the resulting records into the itemArray and data results array
+            if (!empty($tableRecords)) {
+                $this->data[$table] = [];
+                foreach ($tableRecords as $record) {
+                    $this->itemArray[] = [
+                        'id' => $record['uid'],
+                        'table' => $table,
+                    ];
+                    // Add to the record the categories it belongs to
+                    $record['_categories'] = implode(',', $categoriesPerRecord[$record['uid']]);
+                    $this->data[$table][$record['uid']] = $record;
+                }
+            }
+        }
+    }
+}

Classes/ContentObject/Register.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/**
+ * A simple key/value store. See class RegisterStack for more information.
+ *
+ * @internal This class is not part of the TYPO3 Core API
+ */
+final class Register
+{
+    private array $keyValues = [];
+
+    /**
+     * Unable to deal with objects, accepts simple types only.
+     * This is done by intention to not run into issues if this
+     * state needs to be serialized (cached).
+     */
+    public function set(string $key, string|int|bool|float $value): void
+    {
+        $this->keyValues[$key] = $value;
+    }
+
+    public function get(string $key, string|int|bool|float|null $default = null): string|int|bool|float|null
+    {
+        return $this->keyValues[$key] ?? $default;
+    }
+}

Classes/ContentObject/RegisterStack.php

@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/**
+ * Contains TypoScript "Register" state together with class Register.
+ *
+ * An instance of this class is created during frontend rendering and registered
+ * as Request attribute "frontend.register.stack".
+ *
+ * The TypoScript "register" is a key-value store (implemented by class Register)
+ * combined with a stack. This has probably been invented for menu rendering back
+ * then: content objects in general and TypoScript based menu rendering specifically
+ * can be nested when multiple menu depths/layers are rendered. Each of those layers
+ * may need own values within their scope.
+ *
+ * The two main usages are TypoScript data/getText to access register entries along
+ * with content objects LOAD_REGISTER and RESTORE_REGISTER which push and pop register
+ * objects from the stack and store key/value entries.
+ *
+ * There is one quirk in comparison to a "classic" stack: New Register instances are
+ * typically clones of the underlying Register instance plus new key/values, see class
+ * LoadRegisterContentObject for an implementation: Values can be set on a lower
+ * level register and is still "seen/part of" a register on top. key/values bubble up,
+ * but not down.
+ *
+ * @internal This class is not part of the TYPO3 Core API
+ */
+final class RegisterStack
+{
+    /**
+     * @var Register[]
+     */
+    private array $registerStack = [];
+
+    public function __construct()
+    {
+        $this->push(new Register());
+    }
+
+    /**
+     * Peek current Register. Does not change stack.
+     */
+    public function current(): Register
+    {
+        return array_last($this->registerStack);
+    }
+
+    /**
+     * Add a new Register instance to top of stack
+     */
+    public function push(Register $register): void
+    {
+        $this->registerStack[] = $register;
+    }
+
+    /**
+     * Remove top of stack Register and return it.
+     * Re-inits with an empty register if empty to avoid exception or nullable handling
+     * in consumers if there is for example a "RESTORE_REGISTER" cObj too much. As
+     * drawback, consumers never know if there is a leftover pop().
+     */
+    public function pop(): Register
+    {
+        $register = array_pop($this->registerStack);
+        if (empty($this->registerStack)) {
+            $this->push(new Register());
+        }
+        return $register;
+    }
+}

Classes/ContentObject/RestoreRegisterContentObject.php

@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/**
+ * Implement cObj "RESTORE_REGISTER":
+ * As the counterpart of "LOAD_REGISTER", "RESTORE_REGISTER" removes any state
+ * added by latest "LOAD_REGISTER" again.
+ */
+class RestoreRegisterContentObject extends AbstractContentObject
+{
+    /**
+     * Does not return any content, it just sets internal data based on the TypoScript properties.
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Empty string
+     */
+    public function render($conf = []): string
+    {
+        $this->request->getAttribute('frontend.register.stack')->pop();
+        return '';
+    }
+}

Classes/ContentObject/ScalableVectorGraphicsContentObject.php

@@ -0,0 +1,150 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use TYPO3\CMS\Core\Imaging\Exception\InvalidSvgException;
+use TYPO3\CMS\Core\Imaging\Svg\SvgDocumentFactory;
+use TYPO3\CMS\Core\Imaging\Svg\SvgDocumentService;
+use TYPO3\CMS\Core\SystemResource\Exception\SystemResourceDoesNotExistException;
+use TYPO3\CMS\Core\SystemResource\Exception\SystemResourceException;
+use TYPO3\CMS\Core\SystemResource\Publishing\SystemResourcePublisherInterface;
+use TYPO3\CMS\Core\SystemResource\SystemResourceFactory;
+use TYPO3\CMS\Core\SystemResource\Type\PublicResourceInterface;
+use TYPO3\CMS\Core\SystemResource\Type\SystemResourceInterface;
+
+/**
+ * Contains SVG content object.
+ */
+class ScalableVectorGraphicsContentObject extends AbstractContentObject
+{
+    public function __construct(
+        protected readonly SystemResourceFactory $resourceFactory,
+        protected readonly SystemResourcePublisherInterface $resourcePublisher,
+        protected readonly SvgDocumentFactory $svgDocumentFactory,
+        protected readonly SvgDocumentService $svgDocumentService,
+    ) {}
+
+    /**
+     * Rendering the cObject, SVG
+     *
+     * @param array $conf Array of TypoScript properties
+     */
+    public function render($conf = []): string
+    {
+        $renderMode = $this->cObj->stdWrapValue('renderMode', $conf);
+
+        if ($renderMode === 'inline') {
+            return $this->renderInline($conf);
+        }
+
+        return $this->renderObject($conf);
+    }
+
+    protected function renderInline(array $conf): string
+    {
+        $resource = $this->resolveResource($conf);
+        [$width, $height, $isDefaultWidth, $isDefaultHeight] = $this->getDimensions($conf);
+
+        $content = $svgContent = '';
+        if ($resource instanceof SystemResourceInterface) {
+            try {
+                $svgContent = $resource->getContents();
+            } catch (SystemResourceDoesNotExistException) {
+            }
+        }
+        if ($svgContent !== '') {
+            try {
+                $document = $this->svgDocumentFactory->fromStringAndSanitize($svgContent);
+                if (!$isDefaultWidth) {
+                    $document->documentElement->setAttribute('width', (string)$width);
+                }
+                if (!$isDefaultHeight) {
+                    $document->documentElement->setAttribute('height', (string)$height);
+                }
+                $content = $this->svgDocumentService->toInlineMarkup($document);
+            } catch (InvalidSvgException) {
+                $content = '';
+            }
+        } else {
+            $value = $this->cObj->stdWrapValue('value', $conf);
+            if (!empty($value)) {
+                $content = [];
+                $content[] = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="' . (int)$width . '" height="' . (int)$height . '">';
+                $content[] = $value;
+                $content[] = '</svg>';
+                $content = implode(LF, $content);
+            }
+        }
+        if (isset($conf['stdWrap.'])) {
+            $content = $this->cObj->stdWrap($content, $conf['stdWrap.']);
+        }
+        return $content;
+    }
+
+    /**
+     * Render the SVG as <object> tag
+     */
+    protected function renderObject(array $conf): string
+    {
+        $resource = $this->resolveResource($conf);
+        [$width, $height] = $this->getDimensions($conf);
+        $content = [];
+        if ($resource !== null) {
+            $uri = $this->resourcePublisher->generateUri($resource, $this->request);
+            $content[] = '<!--[if IE]>';
+            $content[] = '  <object src="' . htmlspecialchars($uri) . '" classid="image/svg+xml" width="' . (int)$width . '" height="' . (int)$height . '">';
+            $content[] = '<![endif]-->';
+            $content[] = '<!--[if !IE]>-->';
+            $content[] = '  <object data="' . htmlspecialchars($uri) . '" type="image/svg+xml" width="' . (int)$width . '" height="' . (int)$height . '">';
+            $content[] = '<!--<![endif]-->';
+            $content[] = '</object>';
+        }
+        $content = implode(LF, $content);
+        if (isset($conf['stdWrap.'])) {
+            $content = $this->cObj->stdWrap($content, $conf['stdWrap.']);
+        }
+        return $content;
+    }
+
+    protected function resolveResource(array $conf): ?PublicResourceInterface
+    {
+        try {
+            $resourceIdentifier = (string)$this->cObj->stdWrapValue('src', $conf);
+            return $this->resourceFactory->createPublicResource($resourceIdentifier);
+        } catch (SystemResourceException) {
+            return null;
+        }
+    }
+
+    protected function getDimensions(array $conf): array
+    {
+        $isDefaultWidth = false;
+        $isDefaultHeight = false;
+        $width = $this->cObj->stdWrapValue('width', $conf);
+        $height = $this->cObj->stdWrapValue('height', $conf);
+
+        if (empty($width)) {
+            $isDefaultWidth = true;
+            $width = 600;
+        }
+        if (empty($height)) {
+            $isDefaultHeight = true;
+            $height = 400;
+        }
+
+        return [$width, $height, $isDefaultWidth, $isDefaultHeight];
+    }
+}

Classes/ContentObject/TextContentObject.php

@@ -0,0 +1,48 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/**
+ * Contains TEXT class object.
+ */
+class TextContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject, TEXT
+     *
+     * @param mixed $conf Array of TypoScript properties (marked as "mixed" currently because we don't know what we're receiving)
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        if (!is_array($conf)) {
+            return '';
+        }
+        $content = '';
+        if (isset($conf['value'])) {
+            $content = $conf['value'];
+            unset($conf['value']);
+        }
+        if (isset($conf['value.'])) {
+            $content = $this->cObj->stdWrap($content, $conf['value.']);
+            unset($conf['value.']);
+        }
+        if (!empty($conf)) {
+            $content = $this->cObj->stdWrap($content, $conf);
+        }
+        return $content;
+    }
+}

Classes/ContentObject/UserContentObject.php

@@ -0,0 +1,66 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use Psr\Log\LogLevel;
+use TYPO3\CMS\Core\TimeTracker\TimeTracker;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Contains USER class object.
+ */
+class UserContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject, USER
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        if (empty($conf)) {
+            $this->getTimeTracker()->setTSlogMessage('USER without configuration.', LogLevel::WARNING);
+            return '';
+        }
+        $content = '';
+        if ($this->cObj->getUserObjectType() === false) {
+            // Render this if we are a delayed non cached object
+            $this->cObj->setUserObjectType(ContentObjectRenderer::OBJECTTYPE_USER);
+        }
+        $tempContent = $this->cObj->callUserFunction($conf['userFunc'] ?? '', $conf, '');
+        if ($this->cObj->doConvertToUserIntObject) {
+            $this->cObj->doConvertToUserIntObject = false;
+            $content = $this->cObj->cObjGetSingle('USER_INT', $conf);
+        } else {
+            $content .= $tempContent;
+            // Only executed when the element is not converted to USER_INT
+            if (isset($conf['stdWrap.'])) {
+                $content = $this->cObj->stdWrap($content, $conf['stdWrap.']);
+            }
+        }
+        $this->cObj->setUserObjectType(false);
+        return $content;
+    }
+
+    /**
+     * @return TimeTracker
+     */
+    protected function getTimeTracker()
+    {
+        return GeneralUtility::makeInstance(TimeTracker::class);
+    }
+}

Classes/ContentObject/UserInternalContentObject.php

@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+use TYPO3\CMS\Core\Utility\StringUtility;
+
+/**
+ * Contains USER_INT class object.
+ */
+class UserInternalContentObject extends AbstractContentObject
+{
+    /**
+     * Rendering the cObject, USER_INT
+     *
+     * @param array $conf Array of TypoScript properties
+     * @return string Output
+     */
+    public function render($conf = [])
+    {
+        $this->cObj->setUserObjectType(ContentObjectRenderer::OBJECTTYPE_USER_INT);
+        $substKey = 'INT_SCRIPT.' . md5(StringUtility::getUniqueId());
+        $pageParts = $this->request->getAttribute('frontend.page.parts');
+        $pageParts->addNotCachedContentElement([
+            'substKey' => $substKey,
+            'conf' => $conf,
+            'cObjData' => serialize($this->cObj->getState()),
+            'type' => 'FUNC',
+        ]);
+        $this->cObj->setUserObjectType(false);
+        return '<!--' . $substKey . '-->';
+    }
+}

Classes/Controller/ErrorController.php

@@ -0,0 +1,227 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Controller;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Symfony\Component\DependencyInjection\Attribute\Autoconfigure;
+use TYPO3\CMS\Core\Controller\ErrorPageController;
+use TYPO3\CMS\Core\Error\Http\InternalServerErrorException;
+use TYPO3\CMS\Core\Error\Http\PageNotFoundException;
+use TYPO3\CMS\Core\Error\Http\ServiceUnavailableException;
+use TYPO3\CMS\Core\Error\PageErrorHandler\PageErrorHandlerInterface;
+use TYPO3\CMS\Core\Error\PageErrorHandler\PageErrorHandlerNotConfiguredException;
+use TYPO3\CMS\Core\Http\HtmlResponse;
+use TYPO3\CMS\Core\Http\JsonResponse;
+use TYPO3\CMS\Core\Site\Entity\Site;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\Middleware\ContentSecurityPolicyHeaders;
+
+/**
+ * This controller provides actions for common HTTP error scenarios (404, 403, 500, 503) and supports custom error
+ * handling through site-specific error handlers. If no custom error handler is configured, it falls back to
+ * rendering a standard TYPO3 error page with appropriate status code and message.
+ */
+#[Autoconfigure(public: true)]
+readonly class ErrorController
+{
+    public function __construct(
+        private ContentSecurityPolicyHeaders $contentSecurityPolicyHeaders,
+    ) {}
+
+    /**
+     * Used for creating a 500 response ("Internal Server Error"), usually due to some misconfiguration.
+     * If a page unavailable handler is configured, a RedirectResponse could be returned as well.
+     *
+     * @throws InternalServerErrorException
+     */
+    public function internalErrorAction(ServerRequestInterface $request, string $message, array $reasons = []): ResponseInterface
+    {
+        if ($this->isRequestFromDevIp($request)) {
+            throw new InternalServerErrorException($message, 1607585445);
+        }
+        $errorHandler = $this->getErrorHandlerFromSite($request, 500);
+        if ($errorHandler !== null) {
+            return $errorHandler->handlePageError($request, $message, $reasons);
+        }
+        $response = $this->handleError(
+            $request,
+            500,
+            'Internal Server Error',
+            'An error occurred while processing your request. Please try again later.',
+            $message
+        );
+        return $this->contentSecurityPolicyHeaders->applyToResponse($request, $response);
+    }
+
+    /**
+     * Used for creating a 503 response ("Service Unavailable"), to be used for maintenance mode
+     * or when the server is overloaded, a RedirectResponse could be returned as well.
+     *
+     * @throws ServiceUnavailableException
+     */
+    public function unavailableAction(ServerRequestInterface $request, string $message, array $reasons = []): ResponseInterface
+    {
+        if ($this->isRequestFromDevIp($request)) {
+            throw new ServiceUnavailableException($message, 1518472181);
+        }
+        $errorHandler = $this->getErrorHandlerFromSite($request, 503);
+        if ($errorHandler !== null) {
+            return $errorHandler->handlePageError($request, $message, $reasons);
+        }
+        $response = $this->handleError(
+            $request,
+            503,
+            'Service Unavailable',
+            'The application is currently down for maintenance. Please check back shortly.',
+            $message
+        );
+        return $this->contentSecurityPolicyHeaders->applyToResponse($request, $response);
+    }
+
+    /**
+     * Used for creating a 404 response ("Page Not Found"), but if configured, a RedirectResponse could be returned
+     * as well.
+     *
+     * @throws PageNotFoundException
+     */
+    public function pageNotFoundAction(ServerRequestInterface $request, string $message, array $reasons = []): ResponseInterface
+    {
+        $errorHandler = $this->getErrorHandlerFromSite($request, 404);
+        if ($errorHandler !== null) {
+            return $errorHandler->handlePageError($request, $message, $reasons);
+        }
+        try {
+            $response = $this->handleError(
+                $request,
+                404,
+                'Page Not Found',
+                'The page did not exist or was inaccessible.',
+                $message
+            );
+            return $this->contentSecurityPolicyHeaders->applyToResponse($request, $response);
+        } catch (\RuntimeException) {
+            throw new PageNotFoundException($message, 1518472189);
+        }
+
+    }
+
+    /**
+     * Used for creating a 403 response ("Access denied"), but if configured, a RedirectResponse could be returned
+     * as well.
+     *
+     * @throws PageNotFoundException
+     */
+    public function accessDeniedAction(ServerRequestInterface $request, string $message, array $reasons = []): ResponseInterface
+    {
+        $errorHandler = $this->getErrorHandlerFromSite($request, 403);
+        if ($errorHandler !== null) {
+            return $errorHandler->handlePageError($request, $message, $reasons);
+        }
+        try {
+            $response = $this->handleError(
+                $request,
+                403,
+                'Access Denied',
+                'You do not have the necessary permissions to access this resource.',
+                $message
+            );
+            return $this->contentSecurityPolicyHeaders->applyToResponse($request, $response);
+        } catch (\RuntimeException) {
+            throw new PageNotFoundException($message, 1518472195);
+        }
+    }
+
+    /**
+     * Used for creating an error with a custom status code, but if configured, a RedirectResponse could be
+     * returned as well.
+     *
+     * @param array<string, mixed> $reasons An array of reasons for evaluation in a possible resolved the error handler
+     *
+     * @throws PageNotFoundException
+     */
+    public function customErrorAction(
+        ServerRequestInterface $request,
+        int $statusCode,
+        string $title,
+        string $message,
+        string $technicalReason = '',
+        array $reasons = [],
+        int $errorCode = 0
+    ): ResponseInterface {
+        $errorHandler = $this->getErrorHandlerFromSite($request, $statusCode);
+        if ($errorHandler !== null) {
+            return $errorHandler->handlePageError($request, $message, $reasons);
+        }
+        try {
+            return $this->handleError($request, $statusCode, $title, $message, $technicalReason, $errorCode);
+        } catch (\RuntimeException) {
+            throw new PageNotFoundException($message, 1770466857);
+        }
+    }
+
+    /**
+     * Checks whether the devIPMask matches the current visitor's IP address.
+     *
+     * @return bool False if the server error handler should be used.
+     */
+    protected function isRequestFromDevIp(ServerRequestInterface $request): bool
+    {
+        $normalizedParams = $request->getAttribute('normalizedParams');
+        return GeneralUtility::cmpIP($normalizedParams->getRemoteAddress(), $GLOBALS['TYPO3_CONF_VARS']['SYS']['devIPmask']);
+    }
+
+    /**
+     * Checks if a site is configured, and an error handler is configured for this specific status code.
+     */
+    protected function getErrorHandlerFromSite(ServerRequestInterface $request, int $statusCode): ?PageErrorHandlerInterface
+    {
+        $site = $request->getAttribute('site');
+        if ($site instanceof Site) {
+            try {
+                return $site->getErrorHandler($statusCode);
+            } catch (PageErrorHandlerNotConfiguredException $e) {
+                // No error handler found, so fallback back to the generic TYPO3 error handler.
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Handles the error by creating a response object. Acts as a fallback when no error handler is configured.
+     */
+    protected function handleError(
+        ServerRequestInterface $request,
+        int $statusCode,
+        string $title,
+        string $message,
+        string $technicalReason = '',
+        int $errorCode = 0
+    ): ResponseInterface {
+        if (str_contains($request->getHeaderLine('Accept'), 'application/json')) {
+            return new JsonResponse(['reason' => $technicalReason], $statusCode);
+        }
+        $content = GeneralUtility::makeInstance(ErrorPageController::class)->errorAction(
+            $title,
+            $message . ($technicalReason ? ' Reason: ' . $technicalReason : ''),
+            $errorCode,
+            $statusCode
+        );
+        return new HtmlResponse($content, $statusCode);
+    }
+}

Classes/Controller/ShowImageController.php

@@ -0,0 +1,245 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Controller;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Symfony\Component\DependencyInjection\Attribute\Autoconfigure;
+use TYPO3\CMS\Core\Configuration\Features;
+use TYPO3\CMS\Core\Crypto\HashAlgo;
+use TYPO3\CMS\Core\Crypto\HashService;
+use TYPO3\CMS\Core\Exception;
+use TYPO3\CMS\Core\Http\Response;
+use TYPO3\CMS\Core\Resource\File;
+use TYPO3\CMS\Core\Resource\FileInterface;
+use TYPO3\CMS\Core\Resource\Folder;
+use TYPO3\CMS\Core\Resource\ProcessedFile;
+use TYPO3\CMS\Core\Resource\ResourceFactory;
+use TYPO3\CMS\Core\Resource\Security\FileNameValidator;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\MathUtility;
+
+/**
+ * eID-Script "tx_cms_showpic"
+ *
+ * Shows a picture from FAL in enlarged format in a separate window.
+ * Picture file and settings is supplied by GET-parameters:
+ *
+ *  - file = fileUid or Combined Identifier
+ *  - encoded in a parameter Array (with weird format - see ContentObjectRenderer about ll. 1500)
+ *  - width, height = usual width an height, m/c supported
+ *  - frame
+ *  - bodyTag
+ *  - title
+ *
+ * @internal this is a concrete TYPO3 implementation and solely used for EXT:frontend and not part of TYPO3's Core API.
+ */
+#[Autoconfigure(public: true)]
+class ShowImageController
+{
+    protected const ALLOWED_PARAMETER_NAMES = ['width', 'height', 'crop', 'bodyTag', 'title'];
+
+    /**
+     * @var \Psr\Http\Message\ServerRequestInterface
+     */
+    protected $request;
+
+    /**
+     * @var File|Folder|null
+     */
+    protected $file;
+
+    /**
+     * @var string
+     */
+    protected $width;
+
+    /**
+     * @var int
+     */
+    protected $height;
+
+    /**
+     * @var string
+     */
+    protected $crop;
+
+    /**
+     * @var int|null
+     */
+    protected $frame;
+
+    /**
+     * @var string
+     */
+    protected $bodyTag = '<body>';
+
+    /**
+     * @var string
+     */
+    protected $title = 'Image';
+
+    /**
+     * @var string
+     */
+    protected $content = <<<EOF
+<!DOCTYPE html>
+<html>
+<head>
+	<title>###TITLE###</title>
+	<meta name="robots" content="noindex,follow" />
+</head>
+###BODY###
+	###IMAGE###
+</body>
+</html>
+EOF;
+
+    public function __construct(
+        protected readonly Features $features,
+        private readonly FileNameValidator $fileNameValidator,
+        private readonly ResourceFactory $resourceFactory,
+    ) {}
+
+    /**
+     * Init function, setting the input vars in the global space.
+     *
+     * @throws \InvalidArgumentException
+     * @throws \TYPO3\CMS\Core\Resource\Exception\FileDoesNotExistException
+     */
+    public function initialize()
+    {
+        $fileUid = $this->request->getQueryParams()['file'] ?? null;
+        $parametersArray = $this->request->getQueryParams()['parameters'] ?? null;
+
+        // If no file-param or parameters are given, we must exit
+        if (!$fileUid || !isset($parametersArray) || !is_array($parametersArray)) {
+            throw new \InvalidArgumentException('No valid fileUid given', 1476048455);
+        }
+
+        // rebuild the parameter array and check if the HMAC is correct
+        $parametersEncoded = implode('', $parametersArray);
+
+        /* For backwards compatibility the HMAC is transported within the md5 param */
+        $hmacParameter = $this->request->getQueryParams()['md5'] ?? null;
+        $hashService = GeneralUtility::makeInstance(HashService::class);
+        $hmac = $hashService->hmac(implode('|', [$fileUid, $parametersEncoded]), 'tx_cms_showpic', HashAlgo::SHA3_256);
+        if (!is_string($hmacParameter) || !hash_equals($hmac, $hmacParameter)) {
+            throw new \InvalidArgumentException('hash does not match', 1476048456);
+        }
+
+        // decode the parameters Array - `bodyTag` contains HTML if set and would lead
+        // to a false-positive XSS-detection, that's why parameters are base64-encoded
+        $parameters = json_decode(base64_decode($parametersEncoded), true) ?? [];
+        foreach ($parameters as $parameterName => $parameterValue) {
+            if (in_array($parameterName, static::ALLOWED_PARAMETER_NAMES, true)) {
+                $this->{$parameterName} = $parameterValue;
+            }
+        }
+
+        if (MathUtility::canBeInterpretedAsInteger($fileUid)) {
+            $this->file = $this->resourceFactory->getFileObject((int)$fileUid);
+        } else {
+            $this->file = $this->resourceFactory->retrieveFileOrFolderObject($fileUid);
+        }
+        if (!($this->file instanceof FileInterface && $this->isFileValid($this->file))) {
+            throw new Exception('File processing for local storage is denied', 1594043425);
+        }
+
+        if ($this->features->isFeatureEnabled('security.frontend.allowInsecureFrameOptionInShowImageController')) {
+            $frameValue = $this->request->getQueryParams()['frame'] ?? null;
+            if ($frameValue !== null && MathUtility::canBeInterpretedAsInteger($frameValue)) {
+                $this->frame = (int)$frameValue;
+            }
+        }
+    }
+
+    /**
+     * Main function which creates the image if needed and outputs the HTML code for the page displaying the image.
+     * Accumulates the content in $this->content
+     */
+    public function main()
+    {
+        $processedImage = $this->processImage();
+        $imageAttributes = [
+            'src' => $processedImage->getPublicUrl() ?? '',
+            'alt' => $this->file->getProperty('alternative') ?: $this->title,
+            'title' => $this->file->getProperty('title') ?: $this->title,
+            'width' => (string)$processedImage->getProperty('width'),
+            'height' => (string)$processedImage->getProperty('height'),
+        ];
+
+        $markerArray = [
+            '###TITLE###' => htmlspecialchars($this->file->getProperty('title') ?: $this->title),
+            '###IMAGE###' => sprintf('<img %s>', GeneralUtility::implodeAttributes($imageAttributes, true)),
+            '###BODY###' => $this->bodyTag,
+        ];
+
+        $this->content = str_replace(array_keys($markerArray), array_values($markerArray), $this->content);
+    }
+
+    /**
+     * Does the actual image processing
+     *
+     * @return \TYPO3\CMS\Core\Resource\ProcessedFile
+     */
+    protected function processImage()
+    {
+        $max = str_contains($this->width . $this->height, 'm') ? 'm' : '';
+        $this->height = MathUtility::forceIntegerInRange($this->height, 0);
+        $this->width = MathUtility::forceIntegerInRange((int)$this->width, 0) . $max;
+
+        $processingConfiguration = [
+            'width' => $this->width,
+            'height' => $this->height,
+            'frame' => $this->frame,
+            'crop' => $this->crop,
+        ];
+        return $this->file->process(ProcessedFile::CONTEXT_IMAGECROPSCALEMASK, $processingConfiguration);
+    }
+
+    /**
+     * Fetches the content and builds a content file out of it
+     *
+     * @param ServerRequestInterface $request the current request object
+     * @return ResponseInterface the modified response
+     */
+    public function processRequest(ServerRequestInterface $request): ResponseInterface
+    {
+        $this->request = $request;
+
+        try {
+            $this->initialize();
+            $this->main();
+            $response = new Response();
+            $response->getBody()->write($this->content);
+            return $response;
+        } catch (\InvalidArgumentException $e) {
+            // add a 410 "gone" if invalid parameters given
+            return (new Response())->withStatus(410);
+        } catch (Exception $e) {
+            return (new Response())->withStatus(404);
+        }
+    }
+
+    protected function isFileValid(FileInterface $file): bool
+    {
+        return $file->getStorage()->getDriverType() !== 'Local'
+            || $this->fileNameValidator->isValid(basename($file->getIdentifier()));
+    }
+}

Classes/DataProcessing/CommaSeparatedValueProcessor.php

@@ -0,0 +1,103 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Core\Utility\CsvUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+/**
+ * This data processor will take field data formatted as a string, where each line, separated by line feed,
+ * represents a row. By default columns are separated by the delimiter character "comma ,",
+ * and can be enclosed by the character 'quotation mark "', like the default in a regular CSV file.
+ *
+ * An example of such a field is "bodytext" in the CType "table".
+ *
+ * The table data is transformed to a multi dimensional array, taking the delimiter and enclosure into account,
+ * before it is passed to the view.
+ *
+ * Example field data:
+ *
+ * This is row 1 column 1|This is row 1 column 2|This is row 1 column 3
+ * This is row 2 column 1|This is row 2 column 2|This is row 2 column 3
+ * This is row 3 column 1|This is row 3 column 2|This is row 3 column 3
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\CommaSeparatedValueProcessor
+ * 10 {
+ *   if.isTrue.field = bodytext
+ *   fieldName = bodytext
+ *   fieldDelimiter = |
+ *   fieldEnclosure = '
+ *   maximumColumns = 2
+ *   as = table
+ * }
+ *
+ * whereas "table" can be used as a variable {table} inside Fluid for iteration.
+ *
+ * Using maximumColumns limits the amount of columns in the multi dimensional array.
+ * In the example, field data of the last column will be stripped off.
+ *
+ * Multi line cells are taken into account.
+ */
+class CommaSeparatedValueProcessor implements DataProcessorInterface
+{
+    /**
+     * Process CSV field data to split into a multi dimensional array
+     *
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData)
+    {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+
+        // The field name to process
+        $fieldName = $cObj->stdWrapValue('fieldName', $processorConfiguration);
+        if (empty($fieldName)) {
+            return $processedData;
+        }
+
+        $originalValue = (string)$cObj->data[$fieldName];
+
+        // Set the target variable
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, $fieldName);
+
+        // Set the maximum amount of columns
+        $maximumColumns = $cObj->stdWrapValue('maximumColumns', $processorConfiguration, 0);
+
+        // Set the field delimiter which is "," by default
+        $fieldDelimiter = (string)$cObj->stdWrapValue('fieldDelimiter', $processorConfiguration, ',');
+
+        // Set the field enclosure which is " by default
+        $fieldEnclosure = (string)$cObj->stdWrapValue('fieldEnclosure', $processorConfiguration, '"');
+
+        $processedData[$targetVariableName] = CsvUtility::csvToArray(
+            $originalValue,
+            $fieldDelimiter,
+            $fieldEnclosure,
+            (int)$maximumColumns
+        );
+
+        return $processedData;
+    }
+}

Classes/DataProcessing/DataProcessorRegistry.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use Symfony\Component\DependencyInjection\ServiceLocator;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+/**
+ * Registry for data processors, tagged with "data.processor"
+ * @internal
+ */
+readonly class DataProcessorRegistry
+{
+    public function __construct(private ServiceLocator $dataProcessorLocator) {}
+
+    public function getDataProcessor(string $identifer): ?DataProcessorInterface
+    {
+        if (!$this->dataProcessorLocator->has($identifer)) {
+            return null;
+        }
+
+        $dataProcessor = $this->dataProcessorLocator->get($identifer);
+        if (!($dataProcessor instanceof DataProcessorInterface)) {
+            throw new \UnexpectedValueException(
+                'Processor with alias / identifier "' . $identifer . '" '
+                . 'must implement interface "' . DataProcessorInterface::class . '"',
+                1666131903
+            );
+        }
+
+        return $dataProcessor;
+    }
+}

Classes/DataProcessing/DatabaseQueryProcessor.php

@@ -0,0 +1,98 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentDataProcessor;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+/**
+ * Fetch records from the database, using the default .select syntax from TypoScript.
+ *
+ * This way, e.g. a FLUIDTEMPLATE cObject can iterate over the array of records.
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
+ * 10 {
+ *   table = tt_address
+ *   pidInList = 123
+ *   where = company="Acme" AND first_name="Ralph"
+ *   orderBy = sorting DESC
+ *   as = addresses
+ *   dataProcessing {
+ *     10 = TYPO3\CMS\Frontend\DataProcessing\FilesProcessor
+ *     10 {
+ *       references.fieldName = image
+ *     }
+ *   }
+ * }
+ *
+ * where "as" means the variable to be containing the result-set from the DB query.
+ */
+readonly class DatabaseQueryProcessor implements DataProcessorInterface
+{
+    public function __construct(protected ContentDataProcessor $contentDataProcessor) {}
+
+    /**
+     * Fetches records from the database as an array
+     *
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     *
+     * @return array the processed data as key/value store
+     */
+    public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData)
+    {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+
+        // the table to query, if none given, exit
+        $tableName = $cObj->stdWrapValue('table', $processorConfiguration);
+        if (empty($tableName)) {
+            return $processedData;
+        }
+        if (isset($processorConfiguration['table.'])) {
+            unset($processorConfiguration['table.']);
+        }
+        if (isset($processorConfiguration['table'])) {
+            unset($processorConfiguration['table']);
+        }
+
+        // The variable to be used within the result
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, 'records');
+
+        // Execute a SQL statement to fetch the records
+        $records = $cObj->getRecords($tableName, $processorConfiguration);
+        $request = $cObj->getRequest();
+        $processedRecordVariables = [];
+        foreach ($records as $key => $record) {
+            $recordContentObjectRenderer = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+            $recordContentObjectRenderer->setRequest($request);
+            $recordContentObjectRenderer->start($record, $tableName);
+            $processedRecordVariables[$key] = ['data' => $record];
+            $processedRecordVariables[$key] = $this->contentDataProcessor->process($recordContentObjectRenderer, $processorConfiguration, $processedRecordVariables[$key]);
+        }
+
+        $processedData[$targetVariableName] = $processedRecordVariables;
+
+        return $processedData;
+    }
+}

Classes/DataProcessing/FilesProcessor.php

@@ -0,0 +1,123 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+use TYPO3\CMS\Frontend\Resource\FileCollector;
+
+/**
+ * This data processor can be used for processing data for record which contain
+ * relations to sys_file records (e.g. sys_file_reference records) or for fetching
+ * files directly from UIDs or from folders or collections.
+ *
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\FilesProcessor
+ * 10 {
+ *   references.fieldName = image
+ *   collections = 13,15
+ *   as = myfiles
+ * }
+ *
+ * whereas "myfiles" can further be used as a variable {myfiles} inside a Fluid template for iteration.
+ */
+class FilesProcessor implements DataProcessorInterface
+{
+    /**
+     * Process data of a record to resolve File objects to the view
+     *
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData)
+    {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+
+        // gather data
+        $fileCollector = GeneralUtility::makeInstance(FileCollector::class);
+
+        // references / relations
+        if (
+            (isset($processorConfiguration['references']) && $processorConfiguration['references'])
+            || (isset($processorConfiguration['references.']) && $processorConfiguration['references.'])
+        ) {
+            $referencesUidList = (string)$cObj->stdWrapValue('references', $processorConfiguration);
+            $referencesUids = GeneralUtility::intExplode(',', $referencesUidList, true);
+            $fileCollector->addFileReferences($referencesUids);
+
+            if (!empty($processorConfiguration['references.'])) {
+                $referenceConfiguration = $processorConfiguration['references.'];
+                $relationField = $cObj->stdWrapValue('fieldName', $referenceConfiguration);
+
+                // If no reference fieldName is set, there's nothing to do
+                if (!empty($relationField)) {
+                    // Fetch the references of the default element
+                    $relationTable = $cObj->stdWrapValue('table', $referenceConfiguration, $cObj->getCurrentTable());
+                    if (!empty($relationTable)) {
+                        $fileCollector->addFilesFromRelation($relationTable, $relationField, $cObj->data);
+                    }
+                }
+            }
+        }
+
+        // files
+        $files = $cObj->stdWrapValue('files', $processorConfiguration);
+        if ($files) {
+            $files = GeneralUtility::intExplode(',', (string)$files, true);
+            $fileCollector->addFiles($files);
+        }
+
+        // collections
+        $collections = $cObj->stdWrapValue('collections', $processorConfiguration);
+        if (!empty($collections)) {
+            $collections = GeneralUtility::intExplode(',', (string)$collections, true);
+            $fileCollector->addFilesFromFileCollections($collections);
+        }
+
+        // folders
+        $folders = $cObj->stdWrapValue('folders', $processorConfiguration);
+        if (!empty($folders)) {
+            $folders = GeneralUtility::trimExplode(',', (string)$folders, true);
+            $fileCollector->addFilesFromFolders($folders, (bool)$cObj->stdWrapValue('recursive', $processorConfiguration['folders.'] ?? [], false));
+        }
+
+        // make sure to sort the files
+        $sortingProperty = $cObj->stdWrapValue('sorting', $processorConfiguration);
+        if ($sortingProperty) {
+            $sortingDirection = $cObj->stdWrapValue(
+                'direction',
+                $processorConfiguration['sorting.'] ?? [],
+                'ascending'
+            );
+
+            $fileCollector->sort($sortingProperty, $sortingDirection);
+        }
+
+        // set the files into a variable, default "files"
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, 'files');
+        $processedData[$targetVariableName] = $fileCollector->getFiles();
+
+        return $processedData;
+    }
+}

Classes/DataProcessing/FlexFormProcessor.php

@@ -0,0 +1,152 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use Psr\Http\Message\ServerRequestInterface;
+use Symfony\Component\DependencyInjection\Attribute\Autoconfigure;
+use TYPO3\CMS\Core\Configuration\FlexForm\FlexFormTools;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentDataProcessor;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+use TYPO3\CMS\Frontend\Resource\FileCollector;
+
+/**
+ * This data processor converts the XML structure of a given FlexForm field
+ * into a fluid readable array.
+ *
+ * Options:
+ * fieldName      - The name of the field containing the FlexForm to be converted
+ * references     - A key / value list for fields with file references to process
+ * dataProcessing - Additional sub DataProcessors to process
+ * as             - The variable, the generated array should be assigned to
+ *
+ * Example of a minimal TypoScript configuration, which processes the field
+ * `pi_flexform` and assigns the array to the `flexFormData` variable:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\FlexFormProcessor
+ *
+ * Example of an advanced TypoScript configuration, which processes the field
+ * `my_flexform_field`, resolves its FAL references and assigns the array to the
+ * `myOutputVariable` variable:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\FlexFormProcessor
+ * 10 {
+ *   fieldName = my_flexform_field
+ *   references {
+ *       my_flex_form_group.my_flex_form_field = my_field_reference
+ *   }
+ *   dataProcessing {
+ *     10 = TYPO3\CMS\Frontend\DataProcessing\FilesProcessor
+ *     10 {
+ *        references.fieldName = media
+ *     }
+ *   }
+ *   as = myOutputVariable
+ * }
+ */
+#[Autoconfigure(public: true)]
+readonly class FlexFormProcessor implements DataProcessorInterface
+{
+    public function __construct(
+        private FlexFormTools $flexFormTools,
+    ) {}
+
+    /**
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(
+        ContentObjectRenderer $cObj,
+        array $contentObjectConfiguration,
+        array $processorConfiguration,
+        array $processedData
+    ): array {
+        // The field name to process
+        $fieldName = $cObj->stdWrapValue('fieldName', $processorConfiguration, 'pi_flexform');
+
+        if (!isset($processedData['data'][$fieldName])) {
+            return $processedData;
+        }
+
+        // Process FlexForm
+        $originalValue = $processedData['data'][$fieldName];
+        if (!is_string($originalValue)) {
+            return $processedData;
+        }
+        $flexFormData = $this->flexFormTools->convertFlexFormContentToArray($originalValue);
+
+        // Process FAL references
+        if (isset($processorConfiguration['references.']) && is_array($processorConfiguration['references.'])) {
+            $this->processFileReferences($cObj, $flexFormData, $processorConfiguration['references.']);
+        }
+
+        // Process additional DataProcessors
+        if (isset($processorConfiguration['dataProcessing.']) && is_array($processorConfiguration['dataProcessing.'])) {
+            // @todo: It looks as if data processors should retrieve the current request from the outside,
+            //        this would avoid $cObj->getRequest() here.
+            $flexFormData = $this->processAdditionalDataProcessors($flexFormData, $processorConfiguration, $cObj->getRequest());
+        }
+
+        // Set the target variable
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, 'flexFormData');
+        $processedData[$targetVariableName] = $flexFormData;
+
+        return $processedData;
+    }
+
+    /**
+     * Recursively process FAL references and replace them by FAL objects.
+     */
+    protected function processFileReferences(ContentObjectRenderer $cObj, array &$data, array $fields): void
+    {
+        foreach ($fields as $key => $field) {
+            $key = rtrim($key, '.');
+
+            if (!isset($data[$key])) {
+                continue;
+            }
+            if (is_array($field)) {
+                $this->processFileReferences($cObj, $data[$key], $field);
+            } else {
+                $fileCollector = GeneralUtility::makeInstance(FileCollector::class);
+                $fileCollector->addFilesFromRelation($cObj->getCurrentTable(), $field, $cObj->data);
+
+                $data[$key] = $fileCollector->getFiles();
+            }
+        }
+    }
+
+    /**
+     * Recursively process sub processors of a data processor
+     */
+    protected function processAdditionalDataProcessors(array $data, array $processorConfiguration, ServerRequestInterface $request): array
+    {
+        $contentObjectRenderer = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+        $contentObjectRenderer->setRequest($request);
+        $contentObjectRenderer->start([$data], '');
+        return GeneralUtility::makeInstance(ContentDataProcessor::class)->process(
+            $contentObjectRenderer,
+            $processorConfiguration,
+            $data
+        );
+    }
+}

Classes/DataProcessing/GalleryProcessor.php

@@ -0,0 +1,510 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Core\Imaging\ImageManipulation\CropVariantCollection;
+use TYPO3\CMS\Core\Resource\FileInterface;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+use TYPO3\CMS\Frontend\ContentObject\Exception\ContentRenderingException;
+
+/**
+ * This data processor will calculate rows, columns and dimensions for a gallery
+ * based on several settings and can be used for f.i. the CType "textmedia"
+ *
+ * The output will be an array which contains the rows and columns,
+ * including the file references and the calculated width and height for each media element,
+ * but also some more information of the gallery, like position, width and counters
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\GalleryProcessor
+ * 10 {
+ *   filesProcessedDataKey = files
+ *   mediaOrientation.field = imageorient
+ *   numberOfColumns.field = imagecols
+ *   equalMediaHeight.field = imageheight
+ *   equalMediaWidth.field = imagewidth
+ *   columnSpacing = 0
+ *   borderEnabled.field = imageborder
+ *   borderPadding = 0
+ *   borderWidth = 0
+ *   maxGalleryWidth = {$styles.content.mediatext.maxW}
+ *   maxGalleryWidthInText = {$styles.content.mediatext.maxWInText}
+ *   as = gallery
+ * }
+ *
+ * Output example:
+ *
+ * gallery {
+ *   position {
+ *     horizontal = center
+ *     vertical = above
+ *     noWrap = FALSE
+ *   }
+ *   width = 600
+ *   count {
+ *     files = 2
+ *     columns = 1
+ *     rows = 2
+ *   }
+ *   rows {
+ *     1 {
+ *       columns {
+ *         1 {
+ *           media = TYPO3\CMS\Core\Resource\FileReference
+ *           dimensions {
+ *             width = 600
+ *             height = 400
+ *           }
+ *         }
+ *       }
+ *     }
+ *     2 {
+ *       columns {
+ *         1 {
+ *           media = TYPO3\CMS\Core\Resource\FileReference
+ *           dimensions {
+ *             width = 600
+ *             height = 400
+ *           }
+ *         }
+ *       }
+ *     }
+ *   }
+ *   columnSpacing = 0
+ *   border {
+ *     enabled = FALSE
+ *     width = 0
+ *     padding = 0
+ *   }
+ * }
+ */
+class GalleryProcessor implements DataProcessorInterface
+{
+    /**
+     * The content object renderer
+     *
+     * @var \TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer
+     */
+    protected $contentObjectRenderer;
+
+    /**
+     * The processor configuration
+     *
+     * @var array
+     */
+    protected $processorConfiguration;
+
+    /**
+     * Matching the tt_content field towards the imageOrient option
+     *
+     * @var array
+     */
+    protected $availableGalleryPositions = [
+        'horizontal' => [
+            'center' => [0, 8],
+            'right' => [1, 9, 17, 25],
+            'left' => [2, 10, 18, 26],
+        ],
+        'vertical' => [
+            'above' => [0, 1, 2],
+            'intext' => [17, 18, 25, 26],
+            'below' => [8, 9, 10],
+        ],
+    ];
+
+    /**
+     * Storage for processed data
+     *
+     * @var array
+     */
+    protected $galleryData = [
+        'position' => [
+            'horizontal' => '',
+            'vertical' => '',
+            'noWrap' => false,
+        ],
+        'width' => 0,
+        'count' => [
+            'files' => 0,
+            'columns' => 0,
+            'rows' => 0,
+        ],
+        'columnSpacing' => 0,
+        'border' => [
+            'enabled' => false,
+            'width' => 0,
+            'padding' => 0,
+        ],
+        'rows' => [],
+    ];
+
+    /**
+     * @var int
+     */
+    protected $numberOfColumns;
+
+    /**
+     * @var int
+     */
+    protected $mediaOrientation;
+
+    /**
+     * @var int
+     */
+    protected $maxGalleryWidth;
+
+    /**
+     * @var int
+     */
+    protected $maxGalleryWidthInText;
+
+    /**
+     * @var int
+     */
+    protected $equalMediaHeight;
+
+    /**
+     * @var int
+     */
+    protected $equalMediaWidth;
+
+    /**
+     * @var int
+     */
+    protected $columnSpacing;
+
+    /**
+     * @var bool
+     */
+    protected $borderEnabled;
+
+    /**
+     * @var int
+     */
+    protected $borderWidth;
+
+    /**
+     * @var int
+     */
+    protected $borderPadding;
+
+    /**
+     * @var string
+     */
+    protected $cropVariant = 'default';
+
+    /**
+     * The (filtered) media files to be used in the gallery
+     *
+     * @var FileInterface[]
+     */
+    protected $fileObjects = [];
+
+    /**
+     * The calculated dimensions for each media element
+     *
+     * @var array
+     */
+    protected $mediaDimensions = [];
+
+    /**
+     * Process data for a gallery, for instance the CType "textmedia"
+     *
+     * @param ContentObjectRenderer $cObj The content object renderer, which contains data of the content element
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     * @throws ContentRenderingException
+     */
+    public function process(
+        ContentObjectRenderer $cObj,
+        array $contentObjectConfiguration,
+        array $processorConfiguration,
+        array $processedData
+    ) {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+
+        $this->contentObjectRenderer = $cObj;
+        $this->processorConfiguration = $processorConfiguration;
+
+        $filesProcessedDataKey = (string)$cObj->stdWrapValue(
+            'filesProcessedDataKey',
+            $processorConfiguration,
+            'files'
+        );
+        if (isset($processedData[$filesProcessedDataKey]) && is_array($processedData[$filesProcessedDataKey])) {
+            $this->fileObjects = $processedData[$filesProcessedDataKey];
+            $this->galleryData['count']['files'] = count($this->fileObjects);
+        } else {
+            throw new ContentRenderingException('No files found for key ' . $filesProcessedDataKey . ' in $processedData.', 1436809789);
+        }
+
+        $this->numberOfColumns = (int)$this->getConfigurationValue('numberOfColumns', 'imagecols');
+        $this->mediaOrientation = (int)$this->getConfigurationValue('mediaOrientation', 'imageorient');
+        $this->maxGalleryWidth = (int)$this->getConfigurationValue('maxGalleryWidth') ?: 600;
+        $this->maxGalleryWidthInText = (int)$this->getConfigurationValue('maxGalleryWidthInText') ?: 300;
+        $this->equalMediaHeight = (int)$this->getConfigurationValue('equalMediaHeight', 'imageheight');
+        $this->equalMediaWidth = (int)$this->getConfigurationValue('equalMediaWidth', 'imagewidth');
+        $this->columnSpacing = (int)$this->getConfigurationValue('columnSpacing');
+        $this->borderEnabled = (bool)$this->getConfigurationValue('borderEnabled', 'imageborder');
+        $this->borderWidth = (int)$this->getConfigurationValue('borderWidth');
+        $this->borderPadding = (int)$this->getConfigurationValue('borderPadding');
+        $this->cropVariant = $this->getConfigurationValue('cropVariant') ?: 'default';
+
+        $this->determineGalleryPosition();
+        $this->determineMaximumGalleryWidth();
+
+        $this->calculateRowsAndColumns();
+        $this->calculateMediaWidthsAndHeights();
+
+        $this->prepareGalleryData();
+
+        $targetFieldName = (string)$cObj->stdWrapValue(
+            'as',
+            $processorConfiguration,
+            'gallery'
+        );
+
+        $processedData[$targetFieldName] = $this->galleryData;
+
+        return $processedData;
+    }
+
+    /**
+     * Get configuration value from processorConfiguration
+     * with when $dataArrayKey fallback to value from cObj->data array
+     *
+     * @param string $key
+     * @param string|null $dataArrayKey
+     * @return string
+     */
+    protected function getConfigurationValue($key, $dataArrayKey = null)
+    {
+        $defaultValue = '';
+        if ($dataArrayKey && isset($this->contentObjectRenderer->data[$dataArrayKey])) {
+            $defaultValue = $this->contentObjectRenderer->data[$dataArrayKey];
+        }
+        return $this->contentObjectRenderer->stdWrapValue(
+            $key,
+            $this->processorConfiguration,
+            $defaultValue
+        );
+    }
+
+    /**
+     * Define the gallery position
+     *
+     * Gallery has a horizontal and a vertical position towards the text
+     * and a possible wrapping of the text around the gallery.
+     */
+    protected function determineGalleryPosition()
+    {
+        foreach ($this->availableGalleryPositions as $positionDirectionKey => $positionDirectionValue) {
+            foreach ($positionDirectionValue as $positionKey => $positionArray) {
+                if (in_array($this->mediaOrientation, $positionArray, true)) {
+                    $this->galleryData['position'][$positionDirectionKey] = $positionKey;
+                }
+            }
+        }
+
+        if ($this->mediaOrientation === 25 || $this->mediaOrientation === 26) {
+            $this->galleryData['position']['noWrap'] = true;
+        }
+    }
+
+    /**
+     * Get the gallery width based on vertical position
+     */
+    protected function determineMaximumGalleryWidth()
+    {
+        if ($this->galleryData['position']['vertical'] === 'intext') {
+            $this->galleryData['width'] = $this->maxGalleryWidthInText;
+        } else {
+            $this->galleryData['width'] = $this->maxGalleryWidth;
+        }
+    }
+
+    /**
+     * Calculate the amount of rows and columns
+     */
+    protected function calculateRowsAndColumns()
+    {
+        // If no columns defined, set it to 1
+        $columns = max((int)$this->numberOfColumns, 1);
+
+        // When more columns than media elements, set the columns to the amount of media elements
+        if ($columns > $this->galleryData['count']['files']) {
+            $columns = $this->galleryData['count']['files'];
+        }
+
+        if ($columns === 0) {
+            $columns = 1;
+        }
+
+        // Calculate the rows from the amount of files and the columns
+        $rows = ceil($this->galleryData['count']['files'] / $columns);
+
+        $this->galleryData['count']['columns'] = $columns;
+        $this->galleryData['count']['rows'] = (int)$rows;
+    }
+
+    /**
+     * Calculate the width/height of the media elements
+     *
+     * Based on the width of the gallery, defined equal width or height by a user, the spacing between columns and
+     * the use of a border, defined by user, where the border width and padding are taken into account
+     *
+     * File objects MUST already be filtered. They need a height and width to be shown in the gallery
+     */
+    protected function calculateMediaWidthsAndHeights()
+    {
+        $columnSpacingTotal = ($this->galleryData['count']['columns'] - 1) * $this->columnSpacing;
+
+        $galleryWidthMinusBorderAndSpacing = max($this->galleryData['width'] - $columnSpacingTotal, 1);
+
+        if ($this->borderEnabled) {
+            $borderPaddingTotal = ($this->galleryData['count']['columns'] * 2) * $this->borderPadding;
+            $borderWidthTotal = ($this->galleryData['count']['columns'] * 2) * $this->borderWidth;
+            $galleryWidthMinusBorderAndSpacing = $galleryWidthMinusBorderAndSpacing - $borderPaddingTotal - $borderWidthTotal;
+        }
+
+        // User entered a predefined height
+        if ($this->equalMediaHeight) {
+            $mediaScalingCorrection = 1;
+            $maximumRowWidth = 0;
+
+            // Calculate the scaling correction when the total of media elements is wider than the gallery width
+            for ($row = 1; $row <= $this->galleryData['count']['rows']; $row++) {
+                $totalRowWidth = 0;
+                for ($column = 1; $column <= $this->galleryData['count']['columns']; $column++) {
+                    $fileKey = (($row - 1) * $this->galleryData['count']['columns']) + $column - 1;
+                    if ($fileKey > $this->galleryData['count']['files'] - 1) {
+                        break 2;
+                    }
+                    $currentMediaScaling = $this->equalMediaHeight / max($this->getCroppedDimensionalProperty($this->fileObjects[$fileKey], 'height'), 1);
+                    $totalRowWidth += $this->getCroppedDimensionalProperty($this->fileObjects[$fileKey], 'width') * $currentMediaScaling;
+                }
+                $maximumRowWidth = max($totalRowWidth, $maximumRowWidth);
+                $mediaInRowScaling = $totalRowWidth / $galleryWidthMinusBorderAndSpacing;
+                $mediaScalingCorrection = max($mediaInRowScaling, $mediaScalingCorrection);
+            }
+
+            // Set the corrected dimensions for each media element
+            foreach ($this->fileObjects as $key => $fileObject) {
+                $mediaHeight = floor($this->equalMediaHeight / $mediaScalingCorrection);
+                $mediaWidth = floor(
+                    $this->getCroppedDimensionalProperty($fileObject, 'width') * ($mediaHeight / max($this->getCroppedDimensionalProperty($fileObject, 'height'), 1))
+                );
+                $this->mediaDimensions[$key] = [
+                    'width' => $mediaWidth,
+                    'height' => $mediaHeight,
+                ];
+            }
+
+            // Recalculate gallery width
+            $this->galleryData['width'] = floor($maximumRowWidth / $mediaScalingCorrection);
+
+            // User entered a predefined width
+        } elseif ($this->equalMediaWidth) {
+            $mediaScalingCorrection = 1;
+
+            // Calculate the scaling correction when the total of media elements is wider than the gallery width
+            $totalRowWidth = $this->galleryData['count']['columns'] * $this->equalMediaWidth;
+            $mediaInRowScaling = $totalRowWidth / $galleryWidthMinusBorderAndSpacing;
+            $mediaScalingCorrection = max($mediaInRowScaling, $mediaScalingCorrection);
+
+            // Set the corrected dimensions for each media element
+            foreach ($this->fileObjects as $key => $fileObject) {
+                $mediaWidth = floor($this->equalMediaWidth / $mediaScalingCorrection);
+                $mediaHeight = floor(
+                    $this->getCroppedDimensionalProperty($fileObject, 'height') * ($mediaWidth / max($this->getCroppedDimensionalProperty($fileObject, 'width'), 1))
+                );
+                $this->mediaDimensions[$key] = [
+                    'width' => $mediaWidth,
+                    'height' => $mediaHeight,
+                ];
+            }
+
+            // Recalculate gallery width
+            $this->galleryData['width'] = floor($totalRowWidth / $mediaScalingCorrection);
+
+            // Automatic setting of width and height
+        } else {
+            $maxMediaWidth = (int)($galleryWidthMinusBorderAndSpacing / $this->galleryData['count']['columns']);
+            foreach ($this->fileObjects as $key => $fileObject) {
+                $croppedWidth = $this->getCroppedDimensionalProperty($fileObject, 'width');
+                $mediaWidth = $croppedWidth > 0 ? min($maxMediaWidth, $croppedWidth) : $maxMediaWidth;
+                $mediaHeight = floor(
+                    $this->getCroppedDimensionalProperty($fileObject, 'height') * ($mediaWidth / max($this->getCroppedDimensionalProperty($fileObject, 'width'), 1))
+                );
+                $this->mediaDimensions[$key] = [
+                    'width' => $mediaWidth,
+                    'height' => $mediaHeight,
+                ];
+            }
+        }
+    }
+
+    /**
+     * When retrieving the height or width for a media file
+     * a possible cropping needs to be taken into account.
+     *
+     * @param string $dimensionalProperty 'width' or 'height'
+     * @return int
+     */
+    protected function getCroppedDimensionalProperty(FileInterface $fileObject, $dimensionalProperty)
+    {
+        if (!$fileObject->hasProperty('crop') || empty($fileObject->getProperty('crop'))) {
+            return $fileObject->getProperty($dimensionalProperty);
+        }
+
+        $croppingConfiguration = $fileObject->getProperty('crop');
+        $cropVariantCollection = CropVariantCollection::create((string)$croppingConfiguration);
+        return (int)$cropVariantCollection->getCropArea($this->cropVariant)->makeAbsoluteBasedOnFile($fileObject)->asArray()[$dimensionalProperty];
+    }
+
+    /**
+     * Prepare the gallery data
+     *
+     * Make an array for rows, columns and configuration
+     */
+    protected function prepareGalleryData()
+    {
+        for ($row = 1; $row <= $this->galleryData['count']['rows']; $row++) {
+            for ($column = 1; $column <= $this->galleryData['count']['columns']; $column++) {
+                $fileKey = (($row - 1) * $this->galleryData['count']['columns']) + $column - 1;
+
+                $this->galleryData['rows'][$row]['columns'][$column] = [
+                    'media' => $this->fileObjects[$fileKey] ?? null,
+                    'dimensions' => [
+                        'width' => $this->mediaDimensions[$fileKey]['width'] ?? null,
+                        'height' => $this->mediaDimensions[$fileKey]['height'] ?? null,
+                    ],
+                ];
+            }
+        }
+
+        $this->galleryData['columnSpacing'] = $this->columnSpacing;
+        $this->galleryData['border']['enabled'] = $this->borderEnabled;
+        $this->galleryData['border']['width'] = $this->borderWidth;
+        $this->galleryData['border']['padding'] = $this->borderPadding;
+    }
+}

Classes/DataProcessing/LanguageMenuProcessor.php

@@ -0,0 +1,239 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Domain\Repository\PageRepository;
+use TYPO3\CMS\Core\Site\Entity\Site;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+use TYPO3\CMS\Frontend\ContentObject\Menu\MenuContentObjectFactory;
+use TYPO3\CMS\Frontend\Utility\CanonicalizationUtility;
+
+/**
+ * This menu processor generates a language menu array that will be
+ * assigned to FLUIDTEMPLATE as variable.
+ *
+ * Options:
+ * if        - TypoScript if condition
+ * languages - A list of languages id's (e.g. 0,1,2) to use for the menu
+ *             creation or 'auto' to load from system or site languages
+ * as        - The variable to be used within the result
+ *
+ * Example TypoScript configuration:
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\LanguageMenuProcessor
+ * 10 {
+ *   as = languagenavigation
+ * }
+ */
+class LanguageMenuProcessor implements DataProcessorInterface
+{
+    protected ContentObjectRenderer $cObj;
+    protected array $processorConfiguration;
+
+    /**
+     * Allowed configuration keys for menu generation, other keys
+     * will throw an exception to prevent configuration errors.
+     */
+    protected array $allowedConfigurationKeys = [
+        'if',
+        'if.',
+        'languages',
+        'languages.',
+        'as',
+        'addQueryString',
+        'addQueryString.',
+    ];
+
+    /**
+     * Remove keys from configuration that should not be passed
+     * to the menu to prevent configuration errors
+     */
+    protected array $removeConfigurationKeysForHmenu = [
+        'languages',
+        'languages.',
+        'as',
+    ];
+
+    protected array $menuConfig = [
+        'special' => 'language',
+        'addQueryString' => 1,
+    ];
+
+    protected array $menuDefaults = [
+        'as' => 'languagemenu',
+    ];
+
+    public function __construct(
+        protected readonly MenuContentObjectFactory $menuContentObjectFactory,
+        protected readonly PageRepository $pageRepository,
+    ) {}
+
+    /**
+     * Get configuration value from processorConfiguration
+     */
+    protected function getConfigurationValue(string $key): string
+    {
+        return $this->cObj->stdWrapValue($key, $this->processorConfiguration, $this->menuDefaults[$key] ?? '');
+    }
+
+    protected function getRequest(): ServerRequestInterface
+    {
+        return $this->cObj->getRequest();
+    }
+
+    /**
+     * Returns the currently configured "site" if a site is configured (= resolved) in the current request.
+     */
+    protected function getCurrentSite(): Site
+    {
+        return $this->getRequest()->getAttribute('site');
+    }
+
+    /**
+     * @throws \InvalidArgumentException
+     */
+    protected function validateConfiguration(): void
+    {
+        $invalidArguments = [];
+        foreach ($this->processorConfiguration as $key => $value) {
+            if (!in_array($key, $this->allowedConfigurationKeys)) {
+                $invalidArguments[str_replace('.', '', $key)] = $key;
+            }
+        }
+        if (!empty($invalidArguments)) {
+            throw new \InvalidArgumentException('LanguageMenuProcessor configuration contains invalid arguments: ' . implode(', ', $invalidArguments), 1522959188);
+        }
+    }
+
+    /**
+     * Process languages and filter the configuration
+     */
+    protected function prepareConfiguration(): void
+    {
+        $this->menuConfig = array_merge($this->menuConfig, $this->processorConfiguration);
+
+        // Process languages
+        $this->menuConfig['special.']['value'] = $this->cObj->stdWrapValue('languages', $this->menuConfig, 'auto');
+
+        // Filter configuration
+        foreach ($this->menuConfig as $key => $value) {
+            if (in_array($key, $this->removeConfigurationKeysForHmenu, true)) {
+                unset($this->menuConfig[$key]);
+            }
+        }
+
+        $paramsToExclude = CanonicalizationUtility::getParamsToExcludeForCanonicalizedUrl(
+            $this->getRequest()->getAttribute('frontend.page.information')->getId(),
+            (array)$GLOBALS['TYPO3_CONF_VARS']['FE']['additionalCanonicalizedUrlParameters'],
+            $this->cObj->getRequest()
+        );
+
+        $this->menuConfig['addQueryString.']['exclude'] = implode(
+            ',',
+            array_merge(
+                GeneralUtility::trimExplode(',', $this->menuConfig['addQueryString.']['exclude'] ?? '', true),
+                $paramsToExclude
+            )
+        );
+    }
+
+    /**
+     * Build the menu configuration so it can be treated by TMENU
+     */
+    protected function buildConfiguration(): void
+    {
+        $this->menuConfig['1'] = 'TMENU';
+        $this->menuConfig['1.']['NO'] = '1';
+    }
+
+    /**
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData): array
+    {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+        $this->cObj = $cObj;
+        $this->processorConfiguration = $processorConfiguration;
+
+        // Validate Configuration
+        $this->validateConfiguration();
+
+        // Build Configuration
+        $this->prepareConfiguration();
+        $this->buildConfiguration();
+
+        // Create menu object and get menu items directly
+        $request = $cObj->getRequest();
+        $site = $this->getCurrentSite();
+
+        $menu = $this->menuContentObjectFactory->getMenuObjectByType('TMENU');
+        $menu->parent_cObj = $cObj;
+
+        if (!$menu->start(null, $this->pageRepository, '', $this->menuConfig, 1, '', $request)) {
+            return $processedData;
+        }
+        $menu->makeMenu();
+        $menuItems = $menu->getMenuItems();
+
+        if ($menuItems === []) {
+            return $processedData;
+        }
+
+        // Enrich with language-specific fields
+        $processedMenu = [];
+        foreach ($menuItems as $key => $item) {
+            $languageId = (int)($item['data']['_REQUESTED_OVERLAY_LANGUAGE'] ?? 0);
+            try {
+                $languageObject = $site->getLanguageById($languageId);
+            } catch (\InvalidArgumentException) {
+                // Language not found in site config
+                continue;
+            }
+            $item['languageId'] = $languageId;
+            $item['locale'] = $languageObject->getLocale()->getName();
+            // Override title with language title (not page title)
+            $item['title'] = $languageObject->getTitle();
+            $item['navigationTitle'] = $languageObject->getNavigationTitle();
+            $item['twoLetterIsoCode'] = $languageObject->getLocale()->getLanguageCode();
+            $item['hreflang'] = $languageObject->getHreflang();
+            $item['direction'] = $languageObject->getLocale()->isRightToLeftLanguageDirection() ? 'rtl' : 'ltr';
+            $item['flag'] = $languageObject->getFlagIdentifier();
+            // Determine state from ITEM_STATE set by the menu system
+            $itemState = $item['data']['ITEM_STATE'] ?? '';
+            // active = 1 if state is ACT, ACTIFSUB, USERDEF2 (active states)
+            $item['active'] = in_array($itemState, ['ACT', 'ACTIFSUB', 'USERDEF2'], true) ? 1 : 0;
+            // current = 1 if state is CUR, CURIFSUB (current language)
+            $item['current'] = in_array($itemState, ['CUR', 'CURIFSUB'], true) ? 1 : 0;
+            // available = 1 unless USERDEF1/USERDEF2 state (language not available)
+            $item['available'] = !in_array($itemState, ['USERDEF1', 'USERDEF2'], true) ? 1 : 0;
+            $processedMenu[$key] = $item;
+        }
+
+        // Return processed data
+        $processedData[$this->getConfigurationValue('as')] = $processedMenu;
+        return $processedData;
+    }
+}

Classes/DataProcessing/MenuProcessor.php

@@ -0,0 +1,298 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Core\Domain\Repository\PageRepository;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentDataProcessor;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+use TYPO3\CMS\Frontend\ContentObject\Menu\MenuContentObjectFactory;
+
+/**
+ * This menu processor generates a menu array that will be assigned to
+ * FLUIDTEMPLATE as variable. Additional DataProcessing is supported and
+ * will be applied to each record.
+ *
+ * Options:
+ * as - The variable to be used within the result
+ * levels - Number of levels of the menu
+ * expandAll = If false, submenus will only render if the parent page is active
+ * includeSpacer = If true, pagetype spacer will be included in the menu
+ * titleField = Field that should be used for the title
+ *
+ * See HMENU docs for more options.
+ * https://docs.typo3.org/typo3cms/TyposcriptReference/ContentObjects/Hmenu/Index.html
+ *
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
+ * 10 {
+ *   special = list
+ *   special.value.field = pages
+ *   levels = 7
+ *   as = menu
+ *   expandAll = 1
+ *   includeSpacer = 1
+ *   titleField = nav_title // title
+ *   dataProcessing {
+ *     10 = TYPO3\CMS\Frontend\DataProcessing\FilesProcessor
+ *     10 {
+ *        references.fieldName = media
+ *     }
+ *   }
+ * }
+ */
+class MenuProcessor implements DataProcessorInterface
+{
+    /**
+     * The content object renderer
+     */
+    protected ?ContentObjectRenderer $cObj = null;
+
+    /**
+     * The processor configuration
+     */
+    protected array $processorConfiguration;
+
+    /**
+     * Allowed configuration keys for menu generation, other keys
+     * will throw an exception to prevent configuration errors.
+     */
+    public array $allowedConfigurationKeys = [
+        'cache',
+        'cache.',
+        'cache_period',
+        'entryLevel',
+        'entryLevel.',
+        'special',
+        'special.',
+        'minItems',
+        'minItems.',
+        'maxItems',
+        'maxItems.',
+        'begin',
+        'begin.',
+        'alternativeSortingField',
+        'alternativeSortingField.',
+        'showAccessRestrictedPages',
+        'showAccessRestrictedPages.',
+        'excludeUidList',
+        'excludeUidList.',
+        'excludeDoktypes',
+        'includeNotInMenu',
+        'includeNotInMenu.',
+        'alwaysActivePIDlist',
+        'alwaysActivePIDlist.',
+        'protectLvar',
+        'addQueryString',
+        'addQueryString.',
+        'if',
+        'if.',
+        'levels',
+        'levels.',
+        'expandAll',
+        'expandAll.',
+        'includeSpacer',
+        'includeSpacer.',
+        'as',
+        'titleField',
+        'titleField.',
+        'dataProcessing',
+        'dataProcessing.',
+    ];
+
+    /**
+     * Remove keys from configuration that should not be passed
+     * to HMENU to prevent configuration errors
+     */
+    public array $removeConfigurationKeysForHmenu = [
+        'levels',
+        'levels.',
+        'expandAll',
+        'expandAll.',
+        'includeSpacer',
+        'includeSpacer.',
+        'as',
+        'titleField',
+        'titleField.',
+        'dataProcessing',
+        'dataProcessing.',
+    ];
+
+    protected array $menuConfig = [];
+
+    public array $menuDefaults = [
+        'levels' => 1,
+        'expandAll' => 1,
+        'includeSpacer' => 0,
+        'as' => 'menu',
+        'titleField' => 'nav_title // title',
+    ];
+
+    protected int $menuLevels;
+    protected int $menuExpandAll;
+    protected int $menuIncludeSpacer;
+    protected string $menuTitleField;
+    protected string $menuAlternativeSortingField;
+    protected string $menuTargetVariableName;
+
+    public function __construct(
+        protected ContentDataProcessor $contentDataProcessor,
+        protected MenuContentObjectFactory $menuContentObjectFactory,
+        protected PageRepository $pageRepository,
+    ) {}
+
+    /**
+     * Get configuration value from processorConfiguration
+     */
+    protected function getConfigurationValue(string $key): string
+    {
+        return $this->cObj->stdWrapValue($key, $this->processorConfiguration, $this->menuDefaults[$key] ?? '');
+    }
+
+    /**
+     * @throws \InvalidArgumentException
+     */
+    public function validateConfiguration(): void
+    {
+        $invalidArguments = [];
+        foreach ($this->processorConfiguration as $key => $value) {
+            if (!in_array($key, $this->allowedConfigurationKeys)) {
+                $invalidArguments[str_replace('.', '', $key)] = $key;
+            }
+        }
+        if (!empty($invalidArguments)) {
+            throw new \InvalidArgumentException('MenuProcessor Configuration contains invalid Arguments: ' . implode(', ', $invalidArguments), 1478806566);
+        }
+    }
+
+    public function prepareConfiguration(): void
+    {
+        $this->menuConfig = $this->processorConfiguration;
+        // Filter configuration
+        foreach ($this->menuConfig as $key => $value) {
+            if (in_array($key, $this->removeConfigurationKeysForHmenu)) {
+                unset($this->menuConfig[$key]);
+            }
+        }
+        // Process special value
+        if (isset($this->menuConfig['special.']['value.'])) {
+            $this->menuConfig['special.']['value'] = $this->cObj->stdWrapValue('value', $this->menuConfig['special.']);
+            unset($this->menuConfig['special.']['value.']);
+        }
+    }
+
+    /**
+     * Build the menu configuration so it can be treated by TMENU
+     */
+    public function buildConfiguration(): void
+    {
+        for ($i = 1; $i <= $this->menuLevels; $i++) {
+            $this->menuConfig[$i] = 'TMENU';
+            if (array_key_exists('showAccessRestrictedPages', $this->menuConfig)) {
+                $this->menuConfig[$i . '.']['showAccessRestrictedPages'] = $this->menuConfig['showAccessRestrictedPages'];
+                if (array_key_exists('showAccessRestrictedPages.', $this->menuConfig)
+                    && is_array($this->menuConfig['showAccessRestrictedPages.'])) {
+                    $this->menuConfig[$i . '.']['showAccessRestrictedPages.'] = $this->menuConfig['showAccessRestrictedPages.'];
+                }
+            }
+            $this->menuConfig[$i . '.']['expAll'] = $this->menuExpandAll;
+            $this->menuConfig[$i . '.']['alternativeSortingField'] = $this->menuAlternativeSortingField;
+            $this->menuConfig[$i . '.']['NO'] = '1';
+            if ($this->menuIncludeSpacer) {
+                $this->menuConfig[$i . '.']['SPC'] = '1';
+            }
+        }
+    }
+
+    /**
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData)
+    {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+        $this->cObj = $cObj;
+        $this->processorConfiguration = $processorConfiguration;
+
+        // Get Configuration
+        $this->menuLevels = (int)$this->getConfigurationValue('levels') ?: 1;
+        $this->menuExpandAll = (int)$this->getConfigurationValue('expandAll');
+        $this->menuIncludeSpacer = (int)$this->getConfigurationValue('includeSpacer');
+        $this->menuTargetVariableName = $this->getConfigurationValue('as');
+        $this->menuTitleField = $this->getConfigurationValue('titleField');
+        $this->menuAlternativeSortingField = $this->getConfigurationValue('alternativeSortingField');
+
+        // Validate Configuration
+        $this->validateConfiguration();
+
+        // Build Configuration
+        $this->prepareConfiguration();
+        $this->buildConfiguration();
+
+        // Create menu object and get menu items directly
+        $request = $cObj->getRequest();
+        $menu = $this->menuContentObjectFactory->getMenuObjectByType('TMENU');
+        $menu->parent_cObj = $cObj;
+
+        if (!$menu->start(null, $this->pageRepository, '', $this->menuConfig, 1, '', $request)) {
+            return $processedData;
+        }
+        $menu->makeMenu();
+        $menuItems = $menu->getMenuItems();
+
+        if ($menuItems === []) {
+            return $processedData;
+        }
+
+        // Process additional data processors
+        $processedMenu = [];
+        foreach ($menuItems as $key => $page) {
+            $processedMenu[$key] = $this->processAdditionalDataProcessors($page, $processorConfiguration);
+        }
+
+        // Return processed data
+        $processedData[$this->menuTargetVariableName] = $processedMenu;
+        return $processedData;
+    }
+
+    /**
+     * Process additional data processors
+     */
+    protected function processAdditionalDataProcessors(array $page, array $processorConfiguration): array
+    {
+        if (is_array($page['children'] ?? false)) {
+            foreach ($page['children'] as $key => $item) {
+                $page['children'][$key] = $this->processAdditionalDataProcessors($item, $processorConfiguration);
+            }
+        }
+        $request = $this->cObj->getRequest();
+        $recordContentObjectRenderer = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+        $recordContentObjectRenderer->setRequest($request);
+        $recordContentObjectRenderer->start($page['data'] ?? [], 'pages');
+        $page['title'] = (string)$recordContentObjectRenderer->stdWrap('', ['field' => $this->menuTitleField]);
+
+        return $this->contentDataProcessor->process($recordContentObjectRenderer, $processorConfiguration, $page);
+    }
+
+}

Classes/DataProcessing/PageContentFetchingProcessor.php

@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use Psr\EventDispatcher\EventDispatcherInterface;
+use TYPO3\CMS\Frontend\Content\RecordCollector;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+use TYPO3\CMS\Frontend\Event\AfterContentHasBeenFetchedEvent;
+
+/**
+ * All-in-one data processor that loads all tt_content records from the current page
+ * layout into the template with a given identifier for each colPos, also respecting
+ * slideMode or collect options based on the page layouts content columns.
+ *
+ * Use "as" for the target variable where the fetched content elements will be provided.
+ * If empty, "content" is used.
+ *
+ * Example TypoScript configuration:
+ *
+ * page = PAGE
+ * page {
+ *     10 = PAGEVIEW
+ *     10 {
+ *         paths.10 = EXT:my_site_package/Resources/Private/Templates/
+ *         dataProcessing {
+ *             10 = page-content
+ *             10.as = myContent
+ *         }
+ *     }
+ * }
+ *
+ * which fetches all content elements for the current page and provides them as "myContent".
+ */
+readonly class PageContentFetchingProcessor implements DataProcessorInterface
+{
+    public function __construct(
+        protected RecordCollector $recordCollector,
+        protected EventDispatcherInterface $eventDispatcher,
+    ) {}
+
+    public function process(
+        ContentObjectRenderer $cObj,
+        array $contentObjectConfiguration,
+        array $processorConfiguration,
+        array $processedData
+    ): array {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+        $request = $cObj->getRequest();
+        $pageInformation = $request->getAttribute('frontend.page.information');
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, 'content');
+        $contentAreas = $pageInformation->getPageLayout()?->getContentAreas();
+        $groupedContent = $this->eventDispatcher->dispatch(
+            new AfterContentHasBeenFetchedEvent($contentAreas->getGroupedRecords($request), $request)
+        )->groupedContent;
+        $processedData[$targetVariableName] = $contentAreas->withUpdatedRecords($groupedContent);
+        return $processedData;
+    }
+}

Classes/DataProcessing/RecordTransformationProcessor.php

@@ -0,0 +1,111 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Core\Domain\RecordFactory;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+/**
+ * Creates Record objects out of full data sets (= DB entries).
+ * This is typically useful in conjunction with the DatabaseQueryProcessor.
+ * Can also be used to transform the current data array of FLUIDTEMPLATE.
+ *
+ * The variable that contains the record(s) from a previous data processor,
+ * or from a FLUIDTEMPLATE view. Default is `data`.
+ *
+ * variableName = items
+ *
+ * The name of the database table of the records. Leave empty to auto-resolve
+ * the table from current ContentObjectRenderer.
+ *
+ * table = tt_content
+ *
+ * The target variable where the resolved record objects are contained.
+ * Can be set to `data` to override the input data array of FLUIDTEMPLATE.
+ * If empty, "record" or "records" (if multiple records are given) is used.
+ *
+ * as = myRecords
+ *
+ * Example TypoScript configuration:
+ *
+ * page = PAGE
+ * page {
+ *     10 = PAGEVIEW
+ *     10 {
+ *         paths.10 = EXT:my_site_package/Resources/Private/Templates/
+ *         dataProcessing {
+ *             10 = database-query
+ *             10 {
+ *                 as = mainContent
+ *                 table = tt_content
+ *                 select.where = colPos=0
+ *                 dataProcessing {
+ *                     10 = record-transformation
+ *                     10 {
+ *                         as = myContent
+ *                     }
+ *                 }
+ *             }
+ *         }
+ *     }
+ * }
+ *
+ * which transforms all content elements fetched by the DatabaseQueryProcessor an provides them as "myContent".
+ */
+readonly class RecordTransformationProcessor implements DataProcessorInterface
+{
+    public function __construct(
+        protected RecordFactory $recordFactory,
+    ) {}
+
+    public function process(
+        ContentObjectRenderer $cObj,
+        array $contentObjectConfiguration,
+        array $processorConfiguration,
+        array $processedData
+    ): array {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+        // `data` is the default variable name for the FLUIDTEMPLATE record
+        // and processed records of the DatabaseQueryProcessor.
+        $defaultVariableName = 'data';
+        $variableName = $cObj->stdWrapValue('variableName', $processorConfiguration, $defaultVariableName);
+        $input = $processedData[$variableName] ?? $processedData;
+        // We can only deal with arrays here.
+        if (!is_array($input)) {
+            return $processedData;
+        }
+        $table = $cObj->stdWrapValue('table', $processorConfiguration, $cObj->getCurrentTable());
+        $output = [];
+        if (array_is_list($input)) {
+            foreach ($input as $record) {
+                $output[] = $this->recordFactory->createResolvedRecordFromDatabaseRow($table, $record);
+            }
+            $defaultTargetVariableName = 'records';
+        } else {
+            $output = $this->recordFactory->createResolvedRecordFromDatabaseRow($table, $input);
+            $defaultTargetVariableName = 'record';
+        }
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, $defaultTargetVariableName);
+        // @todo Should we make sure that $output is actually a Record object?
+        $processedData[$targetVariableName] = $output;
+        return $processedData;
+    }
+}

Classes/DataProcessing/SiteLanguageProcessor.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+/**
+ * Fetch the SiteLanguage object containing all information about the current language
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\SiteLanguageProcessor
+ * 10 {
+ *   as = siteLanguage
+ * }
+ *
+ * where "as" names the variable containing the SiteLanguage properties
+ */
+class SiteLanguageProcessor implements DataProcessorInterface
+{
+    /**
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData): array
+    {
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, 'siteLanguage');
+        $processedData[$targetVariableName] = $cObj->getRequest()->getAttribute('language')?->toArray();
+        return $processedData;
+    }
+}

Classes/DataProcessing/SiteProcessor.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+/**
+ * Fetch the site object containing all information about the current site
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\SiteProcessor
+ * 10 {
+ *   as = site
+ * }
+ *
+ * where "as" names the variable containing the site object
+ */
+class SiteProcessor implements DataProcessorInterface
+{
+    /**
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData): array
+    {
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, 'site');
+        $processedData[$targetVariableName] = $cObj->getRequest()->getAttribute('site');
+        return $processedData;
+    }
+}

Classes/DataProcessing/SplitProcessor.php

@@ -0,0 +1,97 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+/**
+ * This data processor can be used for processing data for the content elements which have split contents in one field
+ * like e.g. "bullets". It will split the field data in an array ready to be iterated over in Fluid.
+ *
+ * Example field data:
+ *
+ * This is bullet 1, This is bullet 2, This is bullet 3
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\SplitProcessor
+ * 10 {
+ *   if.isTrue.field = bodytext
+ *   delimiter = ,
+ *   fieldName = bodytext
+ *   removeEmptyEntries = 1
+ *   filterIntegers = 1
+ *   filterUnique = 1
+ *   as = bullets
+ * }
+ *
+ * whereas "bullets" can be used as a variable {bullets} inside Fluid for iteration.
+ */
+class SplitProcessor implements DataProcessorInterface
+{
+    /**
+     * Process field data to split in an array
+     *
+     * @param ContentObjectRenderer $cObj The data of the content element or page
+     * @param array $contentObjectConfiguration The configuration of Content Object
+     * @param array $processorConfiguration The configuration of this processor
+     * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+     * @return array the processed data as key/value store
+     */
+    public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData)
+    {
+        if (isset($processorConfiguration['if.']) && !$cObj->checkIf($processorConfiguration['if.'])) {
+            return $processedData;
+        }
+
+        // The field name to process
+        $fieldName = $cObj->stdWrapValue('fieldName', $processorConfiguration);
+        if (empty($fieldName)) {
+            return $processedData;
+        }
+
+        $originalValue = (string)($cObj->data[$fieldName] ?? '');
+
+        // Set the target variable
+        $targetVariableName = $cObj->stdWrapValue('as', $processorConfiguration, $fieldName);
+
+        // Set the delimiter which is "LF" by default
+        $delimiter = (string)$cObj->stdWrapValue('delimiter', $processorConfiguration, LF);
+
+        // Filter integers
+        $filterIntegers = (bool)$cObj->stdWrapValue('filterIntegers', $processorConfiguration, false);
+
+        // Filter unique
+        $filterUnique = (bool)$cObj->stdWrapValue('filterUnique', $processorConfiguration, false);
+
+        // Remove empty entries
+        $removeEmptyEntries = (bool)$cObj->stdWrapValue('removeEmptyEntries', $processorConfiguration, false);
+
+        if ($filterIntegers === true) {
+            $processedData[$targetVariableName] = GeneralUtility::intExplode($delimiter, $originalValue, $removeEmptyEntries);
+        } else {
+            $processedData[$targetVariableName] = GeneralUtility::trimExplode($delimiter, $originalValue, $removeEmptyEntries);
+        }
+
+        if ($filterUnique === true) {
+            $processedData[$targetVariableName] = array_unique($processedData[$targetVariableName]);
+        }
+
+        return $processedData;
+    }
+}

Classes/Event/AfterCacheableContentIsGeneratedEvent.php

@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * Event that allows to enhance or change content (also depending on enabled caching).
+ * Depending on disable or enabling caching, the cache is then not stored in the pageCache.
+ *
+ * Until TYPO3 v13, the flag "isCachingEnabled" was available in $TSFE->no_cache.
+ */
+final class AfterCacheableContentIsGeneratedEvent
+{
+    public function __construct(
+        private readonly ServerRequestInterface $request,
+        private string $content,
+        private readonly string $cacheIdentifier,
+        private bool $usePageCache
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function getContent(): string
+    {
+        return $this->content;
+    }
+
+    public function setContent(string $content): void
+    {
+        $this->content = $content;
+    }
+
+    public function isCachingEnabled(): bool
+    {
+        return $this->usePageCache;
+    }
+
+    public function disableCaching(): void
+    {
+        $this->usePageCache = false;
+    }
+
+    public function enableCaching(): void
+    {
+        $this->usePageCache = true;
+    }
+
+    public function getCacheIdentifier(): string
+    {
+        return $this->cacheIdentifier;
+    }
+}

Classes/Event/AfterCachedPageIsPersistedEvent.php

@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * Event that is used directly after all cached content is stored in the page cache.
+ *
+ * NOT fired, if:
+ * * A page is called from the cache
+ * * Caching is disabled using 'frontend.cache.instruction' request attribute, which can
+ *   be set by various middlewares or AfterCacheableContentIsGeneratedEvent
+ */
+final readonly class AfterCachedPageIsPersistedEvent
+{
+    public function __construct(
+        private ServerRequestInterface $request,
+        private string $cacheIdentifier,
+        private array $cacheData,
+        private int $cacheLifetime
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function getCacheIdentifier(): string
+    {
+        return $this->cacheIdentifier;
+    }
+
+    public function getCacheData(): array
+    {
+        return $this->cacheData;
+    }
+
+    /**
+     * The amount of seconds until the cache entry is invalid.
+     */
+    public function getCacheLifetime(): int
+    {
+        return $this->cacheLifetime;
+    }
+}

Classes/Event/AfterContentHasBeenFetchedEvent.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * Event listeners are able to manipulate fetched page content, which is already grouped by column
+ * @todo Consider deprecation due to introduction of ResolveContentAreasEvent
+ */
+final class AfterContentHasBeenFetchedEvent
+{
+    public function __construct(
+        public array $groupedContent,
+        public readonly ServerRequestInterface $request,
+    ) {}
+}

Classes/Event/AfterLinkIsGeneratedEvent.php

@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\Typolink\LinkResultInterface;
+
+/**
+ * Generic event to modify any kind of link generation with typolink(). This is processed by all
+ * frontend-related links.
+ *
+ * If a link could not be generated, a "UnableToLinkException" could be thrown by an Event Listener.
+ */
+final class AfterLinkIsGeneratedEvent
+{
+    public function __construct(
+        private LinkResultInterface $linkResult,
+        private readonly ContentObjectRenderer $contentObjectRenderer,
+        private readonly array $linkInstructions,
+    ) {}
+
+    /**
+     * Update a link when a part was modified by an Event Listener.
+     */
+    public function setLinkResult(LinkResultInterface $linkResult): void
+    {
+        $this->linkResult = $linkResult;
+    }
+
+    public function getLinkResult(): LinkResultInterface
+    {
+        return $this->linkResult;
+    }
+
+    public function getContentObjectRenderer(): ContentObjectRenderer
+    {
+        return $this->contentObjectRenderer;
+    }
+
+    /**
+     * Returns the original instructions / $linkConfiguration that were used to build the link
+     */
+    public function getLinkInstructions(): array
+    {
+        return $this->linkInstructions;
+    }
+}

Classes/Event/AfterPageAndLanguageIsResolvedEvent.php

@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Frontend\Page\PageInformation;
+
+/**
+ * A PSR-14 event fired in the frontend process after a given page has been resolved including
+ * its language.
+ *
+ * This event is intended to e.g. modify TYPO3's language resolving logic by custom additions.
+ * This event also allows to send a custom Response via Event Listeners (e.g. a custom 403 response)
+ */
+final class AfterPageAndLanguageIsResolvedEvent
+{
+    private ?ResponseInterface $response = null;
+
+    public function __construct(
+        private readonly ServerRequestInterface $request,
+        private PageInformation $pageInformation,
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function getPageInformation(): PageInformation
+    {
+        return $this->pageInformation;
+    }
+
+    public function setPageInformation(PageInformation $pageInformation): void
+    {
+        $this->pageInformation = $pageInformation;
+    }
+
+    public function getResponse(): ?ResponseInterface
+    {
+        return $this->response;
+    }
+
+    public function setResponse(ResponseInterface $response): void
+    {
+        $this->response = $response;
+    }
+}

Classes/Event/AfterPageWithRootLineIsResolvedEvent.php

@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Frontend\Page\PageInformation;
+
+/**
+ * A PSR-14 event fired in the frontend process after a given page has been resolved with permissions, rootline etc.
+ * This is useful to modify the page + rootline (but before the language is resolved)
+ * to direct or load content from a different page, or modify the page response if additional
+ * permissions should be checked.
+ */
+final class AfterPageWithRootLineIsResolvedEvent
+{
+    private ?ResponseInterface $response = null;
+
+    public function __construct(
+        private readonly ServerRequestInterface $request,
+        private PageInformation $pageInformation,
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function setResponse(ResponseInterface $response): void
+    {
+        $this->response = $response;
+    }
+
+    public function getResponse(): ?ResponseInterface
+    {
+        return $this->response;
+    }
+
+    public function getPageInformation(): PageInformation
+    {
+        return $this->pageInformation;
+    }
+
+    public function setPageInformation(PageInformation $pageInformation): void
+    {
+        $this->pageInformation = $pageInformation;
+    }
+}

Classes/Event/AfterTypoScriptDeterminedEvent.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use TYPO3\CMS\Core\TypoScript\FrontendTypoScript;
+
+/**
+ * This event is dispatched after the FrontendTypoScript object has been calculated,
+ * just before it is attached to the request.
+ *
+ * The event is designed to enable listeners to act on specific TypoScript conditions.
+ * Listeners *must not* modify TypoScript at this point, the core will try to actively
+ * prevent this.
+ *
+ * This event is especially useful when "upper" middlewares that do not have the
+ * determined TypoScript need to behave differently depending on TypoScript 'config' that
+ * is only created after them.
+ * The core uses this in the TimeTrackInitialization and the WorkspacePreview middlewares,
+ * to determine debugging and preview details.
+ *
+ * Note both 'settings' ("constants") and 'config' are *always* set within the
+ * FrontendTypoScript at this point, even in 'fully cached page' scenarios. 'setup'
+ * and (@internal) 'page' may not be set.
+ */
+final readonly class AfterTypoScriptDeterminedEvent
+{
+    public function __construct(
+        private FrontendTypoScript $frontendTypoScript,
+    ) {}
+
+    public function getFrontendTypoScript(): FrontendTypoScript
+    {
+        return $this->frontendTypoScript;
+    }
+}

Classes/Event/BeforeDatabaseRecordLinkResolvedEvent.php

@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\EventDispatcher\StoppableEventInterface;
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * Event dispatched before the DatabaseRecordLinkBuilder resolves a database record.
+ *
+ * This event is stoppable: If an event listener sets a record, the event propagation
+ * will be stopped and the default record retrieval logic will be skipped.
+ */
+final class BeforeDatabaseRecordLinkResolvedEvent implements StoppableEventInterface
+{
+    public function __construct(
+        public readonly array $linkDetails,
+        public readonly string $databaseTable,
+        public readonly array $typoscriptConfiguration,
+        public readonly array $tsConfig,
+        public readonly ServerRequestInterface $request,
+        public ?array $record = null
+    ) {}
+
+    public function isPropagationStopped(): bool
+    {
+        return $this->record !== null;
+    }
+}

Classes/Event/BeforePageCacheIdentifierIsHashedEvent.php

@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * This event is dispatched just before the final page cache identifier is created,
+ * that is used to get() - and later set(), if needed and allowed - the page cache row.
+ *
+ * The event retrieves all current arguments that will be part of the identifier
+ * calculation and allows to add further arguments in case page caches need
+ * to be more specific.
+ *
+ * This event can be helpful in various scenarios, for example to implement
+ * proper page caching in A/B testing.
+ *
+ * Note this event is *always* dispatched, even in fully cached page scenarios,
+ * if an outer middleware did not return early (for instance due to permission issues).
+ */
+final class BeforePageCacheIdentifierIsHashedEvent
+{
+    public function __construct(
+        private readonly ServerRequestInterface $request,
+        private array $pageCacheIdentifierParameters,
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function getPageCacheIdentifierParameters(): array
+    {
+        return $this->pageCacheIdentifierParameters;
+    }
+
+    public function setPageCacheIdentifierParameters(array $pageCacheIdentifierParameters): void
+    {
+        $this->pageCacheIdentifierParameters = $pageCacheIdentifierParameters;
+    }
+}

Classes/Event/BeforePageIsResolvedEvent.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Frontend\Page\PageInformation;
+
+/**
+ * A PSR-14 event fired before the frontend process is trying to fully resolve a given page
+ * by its page ID and the request.
+ *
+ * Event Listeners can modify incoming parameters (such as $controller->id) or modify the context
+ * for resolving a page.
+ */
+final class BeforePageIsResolvedEvent
+{
+    public function __construct(
+        private readonly ServerRequestInterface $request,
+        private PageInformation $pageInformation,
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function getPageInformation(): PageInformation
+    {
+        return $this->pageInformation;
+    }
+
+    public function setPageInformation(PageInformation $pageInformation): void
+    {
+        $this->pageInformation = $pageInformation;
+    }
+}

Classes/Event/FilterMenuItemsEvent.php

@@ -0,0 +1,89 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Site\Entity\Site;
+
+/**
+ * Listeners to this Event will be able to modify items for a menu generated with HMENU
+ */
+final class FilterMenuItemsEvent
+{
+    public function __construct(
+        private readonly array $allMenuItems,
+        private array $filteredMenuItems,
+        private readonly array $menuConfiguration,
+        private readonly array $itemConfiguration,
+        private readonly array $bannedMenuItems,
+        private readonly array $excludedDoktypes,
+        private readonly Site $site,
+        private readonly Context $context,
+        private readonly array $currentPage
+    ) {}
+
+    public function getAllMenuItems(): array
+    {
+        return $this->allMenuItems;
+    }
+
+    public function getFilteredMenuItems(): array
+    {
+        return $this->filteredMenuItems;
+    }
+
+    public function setFilteredMenuItems(array $filteredMenuItems): void
+    {
+        $this->filteredMenuItems = $filteredMenuItems;
+    }
+
+    public function getMenuConfiguration(): array
+    {
+        return $this->menuConfiguration;
+    }
+
+    public function getItemConfiguration(): array
+    {
+        return $this->itemConfiguration;
+    }
+
+    public function getBannedMenuItems(): array
+    {
+        return $this->bannedMenuItems;
+    }
+
+    public function getExcludedDoktypes(): array
+    {
+        return $this->excludedDoktypes;
+    }
+
+    public function getSite(): Site
+    {
+        return $this->site;
+    }
+
+    public function getContext(): Context
+    {
+        return $this->context;
+    }
+
+    public function getCurrentPage(): array
+    {
+        return $this->currentPage;
+    }
+}

Classes/Event/ModifyCacheLifetimeForPageEvent.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use TYPO3\CMS\Core\Context\Context;
+
+/**
+ * Event to allow listeners to modify the amount of seconds that a generated frontend page
+ * should be cached in the "pages" cache when initially generated.
+ */
+final class ModifyCacheLifetimeForPageEvent
+{
+    public function __construct(
+        private int $cacheLifetime,
+        private readonly int $pageId,
+        private readonly array $pageRecord,
+        private readonly array $renderingInstructions,
+        private readonly Context $context
+    ) {}
+
+    public function setCacheLifetime(int $cacheLifetime): void
+    {
+        $this->cacheLifetime = $cacheLifetime;
+    }
+
+    public function getCacheLifetime(): int
+    {
+        return $this->cacheLifetime;
+    }
+
+    public function getPageId(): int
+    {
+        return $this->pageId;
+    }
+
+    public function getPageRecord(): array
+    {
+        return $this->pageRecord;
+    }
+
+    public function getRenderingInstructions(): array
+    {
+        return $this->renderingInstructions;
+    }
+
+    public function getContext(): Context
+    {
+        return $this->context;
+    }
+}

Classes/Event/ModifyCacheLifetimeForRowEvent.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+/**
+ * Event to allow listeners to modify the amount of seconds that a page
+ * containing this record should be cached.
+ */
+class ModifyCacheLifetimeForRowEvent
+{
+    public function __construct(
+        public int $cacheLifetime,
+        public readonly string $tableName,
+        public readonly array $pageRecord
+    ) {}
+}

Classes/Event/ModifyHrefLangTagsEvent.php

@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * Listeners to this event will be able to modify the hreflang tags that will be generated. You can use this when you
+ * have an edge case language scenario and need to alter the default hreflang tags.
+ */
+final class ModifyHrefLangTagsEvent
+{
+    private array $hrefLangs = [];
+
+    public function __construct(private readonly ServerRequestInterface $request) {}
+
+    public function getHrefLangs(): array
+    {
+        return $this->hrefLangs;
+    }
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    /**
+     * Set the hreflangs. This should be an array in format:
+     *
+     * ```
+     * [
+     *     'en-US' => 'https://example.com',
+     *     'nl-NL' => 'https://example.com/nl'
+     * ]
+     * ```
+     *
+     * @param array $hrefLangs
+     */
+    public function setHrefLangs(array $hrefLangs): void
+    {
+        $this->hrefLangs = $hrefLangs;
+    }
+
+    /**
+     * Add a hreflang tag to the current list of hreflang tags
+     *
+     * @param string $languageCode The language of the hreflang tag you would like to add. For example: nl-NL
+     * @param string $url The URL of the translation. For example: https://example.com/nl
+     */
+    public function addHrefLang(string $languageCode, string $url): void
+    {
+        $this->hrefLangs[$languageCode] = $url;
+    }
+}

Classes/Event/ModifyPageLinkConfigurationEvent.php

@@ -0,0 +1,96 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * A generic PSR 14 Event to allow modifying the incoming (and resolved) page when building a "page link".
+ *
+ * This event allows Event Listener to change the page to be linked to, or add/remove possible query
+ * parameters / fragments to be generated.
+ */
+final class ModifyPageLinkConfigurationEvent
+{
+    private bool $pageWasModified = false;
+
+    public function __construct(
+        private array $configuration,
+        private readonly array $linkDetails,
+        private array $page,
+        private array $queryParameters,
+        private string $fragment,
+        private readonly ServerRequestInterface $request,
+    ) {}
+
+    public function getConfiguration(): array
+    {
+        return $this->configuration;
+    }
+
+    public function setConfiguration(array $configuration): void
+    {
+        $this->configuration = $configuration;
+    }
+
+    public function getLinkDetails(): array
+    {
+        return $this->linkDetails;
+    }
+
+    public function getPage(): array
+    {
+        return $this->page;
+    }
+
+    public function setPage(array $page): void
+    {
+        $this->page = $page;
+        $this->pageWasModified = true;
+    }
+
+    public function getQueryParameters(): array
+    {
+        return $this->queryParameters;
+    }
+
+    public function setQueryParameters(array $queryParameters): void
+    {
+        $this->queryParameters = $queryParameters;
+    }
+
+    public function getFragment(): string
+    {
+        return $this->fragment;
+    }
+
+    public function setFragment(string $fragment): void
+    {
+        $this->fragment = $fragment;
+    }
+
+    public function pageWasModified(): bool
+    {
+        return $this->pageWasModified;
+    }
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+}

Classes/Event/ModifyTypoScriptConfigEvent.php

@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\TypoScript\AST\Node\RootNode;
+
+/**
+ * This event allows listeners to adjust and react on TypoScript 'config'.
+ *
+ * This event is dispatched *before* final TypoScript 'config' is written to cache, and
+ * *not* when a page can be successfully retrieved from cache, which is typically
+ * the case in 'page is fully cached' scenarios.
+ *
+ * This incoming $configTree has already been merged with the determined
+ * PAGE "page.config" TypoScript of the requested 'type' / 'typeNum' and the global
+ * TypoScript setup 'config'.
+ *
+ * The result of this event is available as Request attribute:
+ * $request->getAttribute('frontend.typoscript')->getConfigTree(),
+ * and its array variant $request->getAttribute('frontend.typoscript')->getConfigArray().
+ *
+ * Registered listener can *set* a modified setup config AST. Note the TypoScript AST
+ * structure is still marked @internal within v13 core and may change later,
+ * using the event to *write* different 'config' data is thus still a bit risky.
+ */
+final class ModifyTypoScriptConfigEvent
+{
+    public function __construct(
+        private readonly ServerRequestInterface $request,
+        private readonly RootNode $setupTree,
+        private RootNode $configTree,
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function getSetupTree(): RootNode
+    {
+        return $this->setupTree;
+    }
+
+    public function getConfigTree(): RootNode
+    {
+        return $this->configTree;
+    }
+
+    public function setConfigTree(RootNode $configTree): void
+    {
+        $this->configTree = $configTree;
+    }
+}

Classes/Event/ModifyTypoScriptConstantsEvent.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use TYPO3\CMS\Core\TypoScript\AST\Node\RootNode;
+
+/**
+ * This event will provide listeners with the opportunity to adjust constants according to the users' requirements
+ *
+ * @internal This event did not stabilize yet and may change. Use at your own risk.
+ *           Note the TypoScript AST is also marked @internal at the moment and may change as well.
+ */
+final class ModifyTypoScriptConstantsEvent
+{
+    public function __construct(
+        private RootNode $constantsAst,
+    ) {}
+
+    public function getConstantsAst(): RootNode
+    {
+        return $this->constantsAst;
+    }
+
+    public function setConstantsAst(RootNode $constantsAst): void
+    {
+        $this->constantsAst = $constantsAst;
+    }
+}

Classes/Event/ShouldUseCachedPageDataIfAvailableEvent.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Event;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * Event to allow listeners to disable the loading of cached page data when a page is requested.
+ * Does not have any effect if caching is disabled, or if there is no cached version of a page.
+ */
+final class ShouldUseCachedPageDataIfAvailableEvent
+{
+    public function __construct(
+        private readonly ServerRequestInterface $request,
+        private bool $shouldUseCachedPageData
+    ) {}
+
+    public function getRequest(): ServerRequestInterface
+    {
+        return $this->request;
+    }
+
+    public function shouldUseCachedPageData(): bool
+    {
+        return $this->shouldUseCachedPageData;
+    }
+
+    public function setShouldUseCachedPageData(bool $shouldUseCachedPageData): void
+    {
+        $this->shouldUseCachedPageData = $shouldUseCachedPageData;
+    }
+}

Classes/EventListener/AvoidContentSecurityPolicyNonceEventListener.php

@@ -0,0 +1,121 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\EventListener;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Attribute\AsEventListener;
+use TYPO3\CMS\Core\Http\ApplicationType;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\ConsumableNonce;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Directive;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Event\PolicyPreparedEvent;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Middleware\PolicyBag;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\SourceKeyword;
+use TYPO3\CMS\Fluid\ViewHelpers\Security\NonceViewHelper;
+use TYPO3\CMS\Frontend\Cache\CacheInstruction;
+use TYPO3\CMS\Frontend\Page\PageParts;
+
+#[AsEventListener('typo3/cms-frontend/content-security-policy/avoid-nonce')]
+final class AvoidContentSecurityPolicyNonceEventListener
+{
+    public function __invoke(PolicyPreparedEvent $event): void
+    {
+        // skip, since the behavior already has been modified
+        if ($event->policyBag->behavior->useNonce !== null) {
+            return;
+        }
+        // skip, since the frontend request is not supposed to be fully cacheable
+        if (!$this->isCacheableFrontendRequest($event->request)) {
+            return;
+        }
+        if ($event->policyBag->nonce->count() === 0
+            || $this->isEmptyResponse($event->response)
+            || $this->nonceProxyIsAvoidable($event->policyBag)
+        ) {
+            $event->policyBag->behavior->useNonce = false;
+        }
+    }
+
+    private function isCacheableFrontendRequest(ServerRequestInterface $request): bool
+    {
+        if (!ApplicationType::fromRequest($request)->isFrontend()) {
+            return false;
+        }
+        $cacheInstruction = $request->getAttribute('frontend.cache.instruction');
+        $pageParts = $request->getAttribute('frontend.page.parts');
+        return $pageParts instanceof PageParts
+            && $cacheInstruction instanceof CacheInstruction
+            && $cacheInstruction->isCachingAllowed()
+            && !$pageParts->hasNotCachedContentElements();
+    }
+
+    private function isEmptyResponse(string|ResponseInterface|null $response): bool
+    {
+        // skip, since it cannot be determined
+        if ($response === null) {
+            return false;
+        }
+        if (is_string($response)) {
+            return $response === '';
+        }
+        return $response->getBody()->isReadable()
+            && $response->getBody()->getSize() === 0;
+    }
+
+    private function nonceProxyIsAvoidable(PolicyBag $policyBag): bool
+    {
+        $nonce = $policyBag->nonce;
+        foreach ($policyBag->dispositionMap->keys() as $disposition) {
+            $policy = $policyBag->getPolicy($disposition);
+            if ($policy->isEmpty()) {
+                continue;
+            }
+            foreach (SourceKeyword::nonceProxy->getApplicableDirectives() as $directive) {
+                $collection = $policy->get($directive);
+                // directive is not present or does not contain `nonce-proxy`
+                if ($collection === null || !$collection->contains(SourceKeyword::nonceProxy)) {
+                    continue;
+                }
+                // stop in case this directive contains `strict-dynamic`, or the nonce for that directive was consumed
+                // for inline assets, and there is no alternative (weak) `'unsafe-inline'` source in the policy
+                if ($collection->contains(SourceKeyword::strictDynamic)
+                    || (!$collection->contains(SourceKeyword::unsafeInline)
+                        && $this->familyConsumedInlineNonce($directive, $nonce))
+                ) {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    private function familyConsumedInlineNonce(Directive $directive, ConsumableNonce $nonce): bool
+    {
+        // in case the directive was not specified for the `{f:security.nonce()}`
+        // view-helper, the nonce usage is considered active for all directives
+        if ($nonce->countInline(NonceViewHelper::class) > 0) {
+            return true;
+        }
+        foreach ($directive->getFamily() as $member) {
+            if ($nonce->countInline($member) > 0) {
+                return true;
+            }
+        }
+        return false;
+    }
+}

Classes/Exception.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend;
+
+use TYPO3\CMS\Core\Exception as CoreException;
+
+/**
+ * A generic Frontend exception
+ */
+class Exception extends CoreException {}

Classes/Html/HtmlWorker.php

@@ -0,0 +1,196 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Html;
+
+use Masterminds\HTML5;
+use Symfony\Component\DependencyInjection\Attribute\Autoconfigure;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\ConsumableNonce;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\Typolink\LinkFactory;
+use TYPO3\CMS\Frontend\Typolink\UnableToLinkException;
+
+/**
+ * @internal API still might change
+ */
+#[Autoconfigure(public: true)]
+class HtmlWorker
+{
+    /**
+     * Removes corresponding tag in case there's a failure
+     * e.g. `<a href="t3://!!INVALID!!">value</a>` --> ``
+     */
+    public const REMOVE_TAG_ON_FAILURE = 1;
+
+    /**
+     * Removes corresponding attribute in case there's a failure
+     * e.g. `<a href="t3://!!INVALID!!">value</a>` --> `<a>value</a>`
+     */
+    public const REMOVE_ATTR_ON_FAILURE = 2;
+
+    /**
+     * Removes corresponding enclosure in case there's a failure
+     * e.g. `<a href="t3://!!INVALID!!">value</a>` --> `value`
+     */
+    public const REMOVE_ENCLOSURE_ON_FAILURE = 4;
+
+    protected ?\DOMNode $mount = null;
+    protected ?\DOMDocument $document = null;
+
+    public function __construct(
+        protected readonly LinkFactory $linkFactory,
+        protected readonly HTML5 $parser
+    ) {}
+
+    public function __toString(): string
+    {
+        if (!$this->mount instanceof \DOMNode || !$this->document instanceof \DOMDocument) {
+            return '';
+        }
+        return $this->parser->saveHTML($this->mount->childNodes);
+    }
+
+    public function parse(string $html): self
+    {
+        // use document fragment to separate markup from default structure (html, body, ...)
+        $fragment = $this->parser->parseFragment($html);
+        // mount fragment to make it accessible in current document
+        $this->mount = $this->mountFragment($fragment);
+        $this->document = $this->mount->ownerDocument;
+        return $this;
+    }
+
+    /**
+     * @param string|ConsumableNonce $nonce none value to be added
+     * @param string ...$nodeNames element node names to be processed (e.g. `style`)
+     */
+    public function addNonceAttribute(string|ConsumableNonce $nonce, string ...$nodeNames): self
+    {
+        if ($nodeNames === []) {
+            return $this;
+        }
+        $xpath = new \DOMXPath($this->document);
+        foreach ($nodeNames as $nodeName) {
+            $expression = sprintf('//%s[not(@*)]', $nodeName);
+            /** @var \DOMElement $element */
+            foreach ($xpath->query($expression, $this->mount) as $element) {
+                $element->setAttribute('nonce', (string)$nonce);
+            }
+        }
+        return $this;
+    }
+
+    public function transformUri(string $selector, int $flags = 0): self
+    {
+        if (!$this->mount instanceof \DOMNode || !$this->document instanceof \DOMDocument) {
+            return $this;
+        }
+        $subjects = $this->parseSelector($selector);
+        // use xpath to traverse potential candidates having "links"
+        $xpath = new \DOMXPath($this->document);
+        foreach ($subjects as $subject) {
+            $attrName = $subject['attr'];
+            $expression = sprintf('//%s[@%s]', $subject['node'], $attrName);
+            /** @var \DOMElement $element */
+            foreach ($xpath->query($expression, $this->mount) as $element) {
+                $elementAttrValue = $element->getAttribute($attrName);
+                $scheme = parse_url($elementAttrValue, PHP_URL_SCHEME);
+                // skip values not having a URI-scheme
+                if (empty($scheme)) {
+                    continue;
+                }
+                try {
+                    $linkResult = $this->linkFactory->createUri($elementAttrValue);
+                } catch (UnableToLinkException $exception) {
+                    $this->onTransformUriFailure($element, $subject, $flags);
+                    continue;
+                }
+                $linkResultAttrValues = array_filter($linkResult->getAttributes());
+                // usually link results contain `href` attr value, which needs to be assigned
+                // to a different value in case selector (e.g. `img.src` instead f `a.href`)
+                if (isset($linkResultAttrValues['href']) && $attrName !== 'href') {
+                    $element->setAttribute($attrName, $linkResultAttrValues['href']);
+                    unset($linkResultAttrValues['href']);
+                }
+                foreach ($linkResultAttrValues as $name => $value) {
+                    $element->setAttribute($name, (string)$value);
+                }
+            }
+        }
+        return $this;
+    }
+
+    /**
+     * @param \DOMElement $element current element encountered failure
+     * @param array{node: string, attr: string} $subject node-attr combination
+     */
+    protected function onTransformUriFailure(\DOMElement $element, array $subject, int $flags): void
+    {
+        if (($flags & self::REMOVE_TAG_ON_FAILURE) === self::REMOVE_TAG_ON_FAILURE) {
+            $element->parentNode->removeChild($element);
+        } elseif (($flags & self::REMOVE_ATTR_ON_FAILURE) === self::REMOVE_ATTR_ON_FAILURE) {
+            $attrName = $subject['attr'];
+            $element->removeAttribute($attrName);
+        } elseif (($flags & self::REMOVE_ENCLOSURE_ON_FAILURE) === self::REMOVE_ENCLOSURE_ON_FAILURE) {
+            // moves children out of element's enclosure, then removes (empty) element
+            // eg `<ELEMENT><a><b><c></ELEMENT><NEXT>`
+            // 1) `<ELEMENT><b><c></ELEMENT><a><NEXT>`
+            // 2) `<ELEMENT><c></ELEMENT><a><b><NEXT>`
+            // 3) `<ELEMENT></ELEMENT><a><b><c><NEXT>`
+            // rm `<a><b><c><NEXT>`
+            $parentNode = $element->parentNode;
+            foreach ($element->childNodes as $child) {
+                $cloned = $child->cloneNode(true);
+                $parentNode->insertBefore($cloned, $element);
+            }
+            $parentNode->removeChild($element);
+        }
+    }
+
+    /**
+     * @return array{node: string, attr: string}[]
+     */
+    protected function parseSelector(string $selector): array
+    {
+        $items = GeneralUtility::trimExplode(',', $selector, true);
+        $items = array_map(
+            static function (string $item): ?array {
+                $parts = explode('.', $item);
+                if (count($parts) !== 2) {
+                    return null;
+                }
+                return [
+                    'node' => $parts[0] ?: '*',
+                    'attr' => $parts[1],
+                ];
+            },
+            $items
+        );
+        return array_filter($items);
+    }
+
+    protected function mountFragment(\DOMDocumentFragment $fragment): \DOMNode
+    {
+        $document = $fragment->ownerDocument;
+        $mount = $document->createElement('div');
+        $document->appendChild($mount);
+        if ($fragment->hasChildNodes()) {
+            $mount->appendChild($fragment);
+        }
+        return $mount;
+    }
+}

Classes/Http/Application.php

@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Http;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use Symfony\Component\DependencyInjection\Attribute\AutowireInline;
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Context\DateTimeAspect;
+use TYPO3\CMS\Core\Context\UserAspect;
+use TYPO3\CMS\Core\Context\VisibilityAspect;
+use TYPO3\CMS\Core\Context\WorkspaceAspect;
+use TYPO3\CMS\Core\Core\SystemEnvironmentBuilder;
+use TYPO3\CMS\Core\Domain\DateTimeFactory;
+use TYPO3\CMS\Core\Http\AbstractApplication;
+use TYPO3\CMS\Core\Http\MiddlewareDispatcher;
+
+/**
+ * Entry point for the TYPO3 Frontend
+ */
+class Application extends AbstractApplication
+{
+    public function __construct(
+        #[AutowireInline(
+            class: MiddlewareDispatcher::class,
+            arguments: [
+                '$kernel' => '@' . RequestHandler::class,
+                '$middlewares' => '@frontend.middlewares',
+            ],
+        )]
+        RequestHandlerInterface $requestHandler,
+        protected readonly Context $context,
+    ) {
+        $this->requestHandler = $requestHandler;
+    }
+
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        // Create new request object having applicationType "I am a frontend request" attribute.
+        $request = $request->withAttribute('applicationType', SystemEnvironmentBuilder::REQUESTTYPE_FE);
+
+        $this->initializeContext();
+        return parent::handle($request);
+    }
+
+    /**
+     * Initializes the Context used for accessing data and finding out the current state of the application
+     */
+    protected function initializeContext(): void
+    {
+        $this->context->setAspect('date', new DateTimeAspect(DateTimeFactory::createFromTimestamp($GLOBALS['EXEC_TIME'])));
+        $this->context->setAspect('visibility', new VisibilityAspect());
+        $this->context->setAspect('workspace', new WorkspaceAspect(0));
+        $this->context->setAspect('backend.user', new UserAspect(null));
+        $this->context->setAspect('frontend.user', new UserAspect(null, [0, -1]));
+    }
+}

Classes/Middleware/BackendUserAuthenticator.php

@@ -0,0 +1,131 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Middleware;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
+use TYPO3\CMS\Core\Authentication\Mfa\MfaRequiredException;
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Http\NormalizedParams;
+use TYPO3\CMS\Core\Localization\LanguageServiceFactory;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\Authentication\FrontendBackendUserAuthentication;
+use TYPO3\CMS\Frontend\Cache\CacheInstruction;
+
+/**
+ * This middleware authenticates a Backend User (be_user) (pre)-viewing a frontend page.
+ *
+ * This middleware also ensures that $GLOBALS['LANG'] is available, however it is possible that
+ * a different middleware later-on might unset the BE_USER as he/she is not allowed to preview a certain
+ * page due to rights management. As this can only happen once the page ID is resolved, this will happen
+ * after the routing middleware.
+ */
+class BackendUserAuthenticator extends \TYPO3\CMS\Core\Middleware\BackendUserAuthenticator
+{
+    public function __construct(
+        Context $context,
+        protected readonly LanguageServiceFactory $languageServiceFactory
+    ) {
+        parent::__construct($context);
+    }
+
+    /**
+     * Creates a backend user authentication object, tries to authenticate a user
+     */
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        // Initializing a possible logged-in Backend User
+        // If the backend cookie is set,
+        // we proceed and check if a backend user is logged in.
+        $backendUserObject = null;
+        if (isset($request->getCookieParams()[BackendUserAuthentication::getCookieName()])) {
+            $backendUserObject = $this->initializeBackendUser($request);
+        }
+        $GLOBALS['BE_USER'] = $backendUserObject;
+        // Load specific dependencies which are necessary for a valid Backend User
+        // like $GLOBALS['LANG'] for labels in the language of the BE User (so AdminPanel works)
+        if ($backendUserObject !== null) {
+            $GLOBALS['LANG'] = $this->languageServiceFactory->createFromUserPreferences($GLOBALS['BE_USER']);
+            $this->setBackendUserAspect($GLOBALS['BE_USER']);
+            if ($this->context->getPropertyFromAspect('backend.user', 'isLoggedIn', false)
+                && (strtolower($request->getServerParams()['HTTP_CACHE_CONTROL'] ?? '') === 'no-cache'
+                    || strtolower($request->getServerParams()['HTTP_PRAGMA'] ?? '') === 'no-cache')
+            ) {
+                // Detecting if shift-reload has been clicked to disable caching if so.
+                // This is only done if a backend user is logged in to prevent DoS-attacks for "casual" requests.
+                $cacheInstruction = $request->getAttribute('frontend.cache.instruction', new CacheInstruction());
+                $cacheInstruction->disableCache('EXT:frontend: Logged in backend user forced reload disabled cache.');
+                $request = $request->withAttribute('frontend.cache.instruction', $cacheInstruction);
+            }
+        }
+
+        $response = $handler->handle($request);
+
+        // If, when building the response, the user is still available, then ensure that the headers are sent properly
+        if ($this->context->getAspect('backend.user')->isLoggedIn()) {
+            return $this->applyHeadersToResponse($response);
+        }
+        return $response;
+    }
+
+    /**
+     * Creates the backend user object and returns it if a valid backend user is found.
+     */
+    protected function initializeBackendUser(ServerRequestInterface $request): ?FrontendBackendUserAuthentication
+    {
+        // New backend user object
+        $backendUserObject = GeneralUtility::makeInstance(FrontendBackendUserAuthentication::class);
+        try {
+            $backendUserObject->start($request);
+        } catch (MfaRequiredException $e) {
+            // Do nothing, as the user is not fully authenticated - has not
+            // passed required multi-factor authentication - via the backend.
+            return null;
+        }
+        if (!empty($backendUserObject->user['uid'])) {
+            $this->setBackendUserAspect($backendUserObject, (int)$backendUserObject->user['workspace_id']);
+            $backendUserObject->fetchGroupData();
+        }
+        // Unset the user initialization if any setting / restriction applies
+        if (!$this->isAuthenticated($backendUserObject, $request, $request->getAttribute('normalizedParams'))) {
+            $backendUserObject = null;
+            $this->setBackendUserAspect(null);
+        }
+        return $backendUserObject;
+    }
+
+    /**
+     * Implementing the access checks that the TYPO3 CMS bootstrap script does before a user is ever logged in.
+     * Returns TRUE if access is OK
+     */
+    protected function isAuthenticated(FrontendBackendUserAuthentication $user, ServerRequestInterface $request, NormalizedParams $normalizedParams): bool
+    {
+        // Check IP
+        $ipMask = trim($GLOBALS['TYPO3_CONF_VARS']['BE']['IPmaskList'] ?? '');
+        if ($ipMask && !GeneralUtility::cmpIP($normalizedParams->getRemoteAddress(), $ipMask)) {
+            return false;
+        }
+        // Check SSL (https)
+        if ($GLOBALS['TYPO3_CONF_VARS']['BE']['lockSSL'] && !$normalizedParams->isHttps()) {
+            return false;
+        }
+        return $user->backendCheckLogin($request);
+    }
+}

Classes/Middleware/CacheTimeout.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Middleware;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+/**
+ * Handle cache timeout that is set in typoscript.
+ *
+ * @internal
+ */
+class CacheTimeout implements MiddlewareInterface
+{
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        $response = $handler->handle($request);
+        $config = $request->getAttribute('frontend.typoscript')?->getConfigArray() ?? [];
+        if ($config['cache_clearAtMidnight'] ?? false) {
+            // @todo: We should probably decide to deprecate or remove cache_clearAtMidnight
+            //        altogether since it is a flawed concept based on server timezone
+            //        "when is midnight?".
+            $cacheDataCollector = $request->getAttribute('frontend.cache.collector');
+            $timeOutTime = min($GLOBALS['EXEC_TIME'] + $cacheDataCollector->resolveLifetime(), PHP_INT_MAX);
+            $midnightTime = mktime(0, 0, 0, (int)date('m', $timeOutTime), (int)date('d', $timeOutTime), (int)date('Y', $timeOutTime));
+            // If the midnight time of the expire-day is greater than the current time,
+            // we may set the timeOutTime to the new midnighttime.
+            if ($midnightTime > $GLOBALS['EXEC_TIME']) {
+                $cacheDataCollector->restrictMaximumLifetime($midnightTime - $GLOBALS['EXEC_TIME']);
+            }
+        }
+        return $response;
+    }
+}

Classes/Middleware/ContentLengthResponseHeader.php

@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Frontend\Middleware;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use TYPO3\CMS\Core\Context\Context;
+
+/**
+ * Add content-length HTTP header to the response.
+ *
+ * Notice that all Content outside the length of the content-length header will be cut off!
+ * Therefore, content of unknown length from later-on middlewares and if admin users are logged
+ * in (admin panel might show...), we disable it!
+ *
+ * @internal
+ */
+final readonly class ContentLengthResponseHeader implements MiddlewareInterface
+{
+    public function __construct(private Context $context) {}
+
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        $response = $handler->handle($request);
+        $typoScriptConfigArray = $request->getAttribute('frontend.typoscript')->getConfigArray();
+        if (
+            (!isset($typoScriptConfigArray['enableContentLengthHeader']) || $typoScriptConfigArray['enableContentLengthHeader'])
+            && !$this->context->getPropertyFromAspect('backend.user', 'isLoggedIn', false)
+            && !$this->context->getPropertyFromAspect('workspace', 'isOffline', false)
+        ) {
+            $response = $response->withHeader('Content-Length', (string)$response->getBody()->getSize());
+        }
+        return $response;
+    }
+}