PageRepository.php

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<?php
namespace TYPO3\CMS\Frontend\Page;

use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\Versioning\VersionState;

class PageRepository {

    public $urltypes = array('', 'http://', 'ftp://', 'mailto:', 'https://');

    public $where_hid_del = ' AND pages.deleted=0';

    public $where_groupAccess = '';

    public $sys_language_uid = 0;

    // Versioning preview related

    public $versioningPreview = FALSE;

    public $versioningWorkspaceId = 0;

    public $workspaceCache = array();

    // Internal, dynamic

    public $error_getRootLine = '';

    public $error_getRootLine_failPid = 0;

    // Internal caching

    protected $cache_getRootLine = array();

    protected $cache_getPage = array();

    protected $cache_getPage_noCheck = array();

    protected $cache_getPageIdFromAlias = array();

    protected $cache_getMountPointInfo = array();

    protected $tableNamesAllowedOnRootLevel = array(
        'sys_file_metadata',
        'sys_category',
    );

    protected $computedPropertyNames = array(
        '_LOCALIZED_UID',
        '_MP_PARAM',
        '_ORIG_uid',
        '_ORIG_pid',
        '_PAGES_OVERLAY',
        '_PAGES_OVERLAY_UID',
        '_PAGES_OVERLAY_LANGUAGE',
    );

    const DOKTYPE_DEFAULT = 1;
    const DOKTYPE_LINK = 3;
    const DOKTYPE_SHORTCUT = 4;
    const DOKTYPE_BE_USER_SECTION = 6;
    const DOKTYPE_MOUNTPOINT = 7;
    const DOKTYPE_SPACER = 199;
    const DOKTYPE_SYSFOLDER = 254;
    const DOKTYPE_RECYCLER = 255;

    const SHORTCUT_MODE_NONE = 0;
    const SHORTCUT_MODE_FIRST_SUBPAGE = 1;
    const SHORTCUT_MODE_RANDOM_SUBPAGE = 2;
    const SHORTCUT_MODE_PARENT_PAGE = 3;

    public function init($show_hidden) {
        $this->where_groupAccess = '';
        $this->where_hid_del = ' AND pages.deleted=0 ';
        if (!$show_hidden) {
            $this->where_hid_del .= 'AND pages.hidden=0 ';
        }
        $this->where_hid_del .= 'AND pages.starttime<=' . $GLOBALS['SIM_ACCESS_TIME'] . ' AND (pages.endtime=0 OR pages.endtime>' . $GLOBALS['SIM_ACCESS_TIME'] . ') ';
        // Filter out new/deleted place-holder pages in case we are NOT in a
        // versioning preview (that means we are online!)
        if (!$this->versioningPreview) {
            $this->where_hid_del .= ' AND NOT pages.t3ver_state>' . new VersionState(VersionState::DEFAULT_STATE);
        } else {
            // For version previewing, make sure that enable-fields are not
            // de-selecting hidden pages - we need versionOL() to unset them only
            // if the overlay record instructs us to.
            // Copy where_hid_del to other variable (used in relation to versionOL())
            $this->versioningPreview_where_hid_del = $this->where_hid_del;
            // Clear where_hid_del
            $this->where_hid_del = ' AND pages.deleted=0 ';
            // Restrict to live and current workspaces
            $this->where_hid_del .= ' AND (pages.t3ver_wsid=0 OR pages.t3ver_wsid=' . (int)$this->versioningWorkspaceId . ')';
        }
    }

    /**************************
     *
     * Selecting page records
     *
     **************************/

    public function getPage($uid, $disableGroupAccessCheck = FALSE) {
        // Hook to manipulate the page uid for special overlay handling
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['getPage'])) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['getPage'] as $classRef) {
                $hookObject = GeneralUtility::getUserObj($classRef);
                if (!$hookObject instanceof \TYPO3\CMS\Frontend\Page\PageRepositoryGetPageHookInterface) {
                    throw new \UnexpectedValueException('$hookObject must implement interface TYPO3\\CMS\\Frontend\\Page\\PageRepositoryGetPageHookInterface', 1251476766);
                }
                $hookObject->getPage_preProcess($uid, $disableGroupAccessCheck, $this);
            }
        }
        $accessCheck = $disableGroupAccessCheck ? '' : $this->where_groupAccess;
        $cacheKey = md5($accessCheck . '-' . $this->where_hid_del . '-' . $this->sys_language_uid);
        if (is_array($this->cache_getPage[$uid][$cacheKey])) {
            return $this->cache_getPage[$uid][$cacheKey];
        }
        $result = array();
        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', 'pages', 'uid=' . (int)$uid . $this->where_hid_del . $accessCheck);
        $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
        $GLOBALS['TYPO3_DB']->sql_free_result($res);
        if ($row) {
            $this->versionOL('pages', $row);
            if (is_array($row)) {
                $result = $this->getPageOverlay($row);
            }
        }
        $this->cache_getPage[$uid][$cacheKey] = $result;
        return $result;
    }

    public function getPage_noCheck($uid) {
        if ($this->cache_getPage_noCheck[$uid]) {
            return $this->cache_getPage_noCheck[$uid];
        }
        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', 'pages', 'uid=' . (int)$uid . $this->deleteClause('pages'));
        $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
        $GLOBALS['TYPO3_DB']->sql_free_result($res);
        $result = array();
        if ($row) {
            $this->versionOL('pages', $row);
            if (is_array($row)) {
                $result = $this->getPageOverlay($row);
            }
        }
        $this->cache_getPage_noCheck[$uid] = $result;
        return $result;
    }

    public function getFirstWebPage($uid) {
        $output = '';
        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', 'pages', 'pid=' . (int)$uid . $this->where_hid_del . $this->where_groupAccess, '', 'sorting', '1');
        $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
        $GLOBALS['TYPO3_DB']->sql_free_result($res);
        if ($row) {
            $this->versionOL('pages', $row);
            if (is_array($row)) {
                $output = $this->getPageOverlay($row);
            }
        }
        return $output;
    }

    public function getPageIdFromAlias($alias) {
        $alias = strtolower($alias);
        if ($this->cache_getPageIdFromAlias[$alias]) {
            return $this->cache_getPageIdFromAlias[$alias];
        }
        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('uid', 'pages', 'alias=' . $GLOBALS['TYPO3_DB']->fullQuoteStr($alias, 'pages') . ' AND pid>=0 AND pages.deleted=0');
        // "AND pid>=0" because of versioning (means that aliases sent MUST be online!)
        $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
        $GLOBALS['TYPO3_DB']->sql_free_result($res);
        if ($row) {
            $this->cache_getPageIdFromAlias[$alias] = $row['uid'];
            return $row['uid'];
        }
        $this->cache_getPageIdFromAlias[$alias] = 0;
        return 0;
    }

    public function getPageOverlay($pageInput, $lUid = -1) {
        // Initialize:
        if ($lUid < 0) {
            $lUid = $this->sys_language_uid;
        }
        $row = NULL;
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['getPageOverlay'])) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['getPageOverlay'] as $classRef) {
                $hookObject = GeneralUtility::getUserObj($classRef);
                if (!$hookObject instanceof \TYPO3\CMS\Frontend\Page\PageRepositoryGetPageOverlayHookInterface) {
                    throw new \UnexpectedValueException('$hookObject must implement interface TYPO3\\CMS\\Frontend\\Page\\PageRepositoryGetPageOverlayHookInterface', 1269878881);
                }
                $hookObject->getPageOverlay_preProcess($pageInput, $lUid, $this);
            }
        }
        // If language UID is different from zero, do overlay:
        if ($lUid) {
            $fieldArr = GeneralUtility::trimExplode(',', $GLOBALS['TYPO3_CONF_VARS']['FE']['pageOverlayFields'], TRUE);
            if (is_array($pageInput)) {
                // Was the whole record
                $page_id = $pageInput['uid'];
                // Make sure that only fields which exist in the incoming record are overlaid!
                $fieldArr = array_intersect($fieldArr, array_keys($this->purgeComputedProperties($pageInput)));
            } else {
                // Was the id
                $page_id = $pageInput;
            }
            if (count($fieldArr)) {
                // NOTE to enabledFields('pages_language_overlay'):
                // Currently the showHiddenRecords of TSFE set will allow
                // pages_language_overlay records to be selected as they are
                // child-records of a page.
                // However you may argue that the showHiddenField flag should
                // determine this. But that's not how it's done right now.
                // Selecting overlay record:
                $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(implode(',', $fieldArr), 'pages_language_overlay', 'pid=' . (int)$page_id . '
                                AND sys_language_uid=' . (int)$lUid . $this->enableFields('pages_language_overlay'), '', '', '1');
                $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
                $GLOBALS['TYPO3_DB']->sql_free_result($res);
                $this->versionOL('pages_language_overlay', $row);
                if (is_array($row)) {
                    $row['_PAGES_OVERLAY'] = TRUE;
                    $row['_PAGES_OVERLAY_UID'] = $row['uid'];
                    $row['_PAGES_OVERLAY_LANGUAGE'] = $lUid;
                    // Unset vital fields that are NOT allowed to be overlaid:
                    unset($row['uid']);
                    unset($row['pid']);
                }
            }
        }
        // Create output:
        if (is_array($pageInput)) {
            if (is_array($row)) {
                // Overwrite the original field with the overlay
                foreach ($row as $fieldName => $fieldValue) {
                    if ($fieldName !== 'uid' && $fieldName !== 'pid') {
                        if ($this->shouldFieldBeOverlaid('pages_language_overlay', $fieldName, $fieldValue)) {
                            $pageInput[$fieldName] = $fieldValue;
                        }
                    }
                }
            }
            return $pageInput;
        } else {
            // Always an array in return
            return is_array($row) ? $row : array();
        }
    }

    public function getRecordOverlay($table, $row, $sys_language_content, $OLmode = '') {
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['getRecordOverlay'])) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['getRecordOverlay'] as $classRef) {
                $hookObject = GeneralUtility::getUserObj($classRef);
                if (!$hookObject instanceof \TYPO3\CMS\Frontend\Page\PageRepositoryGetRecordOverlayHookInterface) {
                    throw new \UnexpectedValueException('$hookObject must implement interface TYPO3\\CMS\\Frontend\\Page\\PageRepositoryGetRecordOverlayHookInterface', 1269881658);
                }
                $hookObject->getRecordOverlay_preProcess($table, $row, $sys_language_content, $OLmode, $this);
            }
        }
        if ($row['uid'] > 0 && ($row['pid'] > 0 || in_array($table, $this->tableNamesAllowedOnRootLevel))) {
            if ($GLOBALS['TCA'][$table] && $GLOBALS['TCA'][$table]['ctrl']['languageField'] && $GLOBALS['TCA'][$table]['ctrl']['transOrigPointerField']) {
                if (!$GLOBALS['TCA'][$table]['ctrl']['transOrigPointerTable']) {
                    // Will not be able to work with other tables (Just didn't implement it yet;
                    // Requires a scan over all tables [ctrl] part for first FIND the table that
                    // carries localization information for this table (which could even be more
                    // than a single table) and then use that. Could be implemented, but obviously
                    // takes a little more....) Will try to overlay a record only if the
                    // sys_language_content value is larger than zero.
                    if ($sys_language_content > 0) {
                        // Must be default language or [All], otherwise no overlaying:
                        if ($row[$GLOBALS['TCA'][$table]['ctrl']['languageField']] <= 0) {
                            // Select overlay record:
                            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', $table, 'pid=' . (int)$row['pid'] . ' AND ' . $GLOBALS['TCA'][$table]['ctrl']['languageField'] . '=' . (int)$sys_language_content . ' AND ' . $GLOBALS['TCA'][$table]['ctrl']['transOrigPointerField'] . '=' . (int)$row['uid'] . $this->enableFields($table), '', '', '1');
                            $olrow = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
                            $GLOBALS['TYPO3_DB']->sql_free_result($res);
                            $this->versionOL($table, $olrow);
                            // Merge record content by traversing all fields:
                            if (is_array($olrow)) {
                                if (isset($olrow['_ORIG_uid'])) {
                                    $row['_ORIG_uid'] = $olrow['_ORIG_uid'];
                                }
                                if (isset($olrow['_ORIG_pid'])) {
                                    $row['_ORIG_pid'] = $olrow['_ORIG_pid'];
                                }
                                foreach ($row as $fN => $fV) {
                                    if ($fN != 'uid' && $fN != 'pid' && isset($olrow[$fN])) {
                                        if ($this->shouldFieldBeOverlaid($table, $fN, $olrow[$fN])) {
                                            $row[$fN] = $olrow[$fN];
                                        }
                                    } elseif ($fN == 'uid') {
                                        $row['_LOCALIZED_UID'] = $olrow['uid'];
                                    }
                                }
                            } elseif ($OLmode === 'hideNonTranslated' && $row[$GLOBALS['TCA'][$table]['ctrl']['languageField']] == 0) {
                                // Unset, if non-translated records should be hidden. ONLY done if the source
                                // record really is default language and not [All] in which case it is allowed.
                                unset($row);
                            }
                        } elseif ($sys_language_content != $row[$GLOBALS['TCA'][$table]['ctrl']['languageField']]) {
                            unset($row);
                        }
                    } else {
                        // When default language is displayed, we never want to return a record carrying
                        // another language!
                        if ($row[$GLOBALS['TCA'][$table]['ctrl']['languageField']] > 0) {
                            unset($row);
                        }
                    }
                }
            }
        }
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['getRecordOverlay'])) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['getRecordOverlay'] as $classRef) {
                $hookObject = GeneralUtility::getUserObj($classRef);
                if (!$hookObject instanceof \TYPO3\CMS\Frontend\Page\PageRepositoryGetRecordOverlayHookInterface) {
                    throw new \UnexpectedValueException('$hookObject must implement interface TYPO3\\CMS\\Frontend\\Page\\PageRepositoryGetRecordOverlayHookInterface', 1269881659);
                }
                $hookObject->getRecordOverlay_postProcess($table, $row, $sys_language_content, $OLmode, $this);
            }
        }
        return $row;
    }

    /************************************************
     *
     * Page related: Menu, Domain record, Root line
     *
     ************************************************/

    public function getMenu($uid, $fields = '*', $sortField = 'sorting', $addWhere = '', $checkShortcuts = TRUE) {
        $output = array();
        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery($fields, 'pages', 'pid=' . (int)$uid . $this->where_hid_del . $this->where_groupAccess . ' ' . $addWhere, '', $sortField);
        while ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res)) {
            $this->versionOL('pages', $row, TRUE);
            if (is_array($row)) {
                // Keep mount point:
                $origUid = $row['uid'];
                // $row MUST have "uid", "pid", "doktype", "mount_pid", "mount_pid_ol" fields
                // in it
                $mount_info = $this->getMountPointInfo($origUid, $row);
                // There is a valid mount point.
                if (is_array($mount_info) && $mount_info['overlay']) {
                    // Using "getPage" is OK since we need the check for enableFields AND for type 2
                    // of mount pids we DO require a doktype < 200!
                    $mp_row = $this->getPage($mount_info['mount_pid']);
                    if (count($mp_row)) {
                        $row = $mp_row;
                        $row['_MP_PARAM'] = $mount_info['MPvar'];
                    } else {
                        unset($row);
                    }
                }
                // If shortcut, look up if the target exists and is currently visible
                if ($row['doktype'] == self::DOKTYPE_SHORTCUT && ($row['shortcut'] || $row['shortcut_mode']) && $checkShortcuts) {
                    if ($row['shortcut_mode'] == self::SHORTCUT_MODE_NONE) {
                        // No shortcut_mode set, so target is directly set in $row['shortcut']
                        $searchField = 'uid';
                        $searchUid = (int)$row['shortcut'];
                    } elseif ($row['shortcut_mode'] == self::SHORTCUT_MODE_FIRST_SUBPAGE || $row['shortcut_mode'] == self::SHORTCUT_MODE_RANDOM_SUBPAGE) {
                        // Check subpages - first subpage or random subpage
                        $searchField = 'pid';
                        // If a shortcut mode is set and no valid page is given to select subpags
                        // from use the actual page.
                        $searchUid = (int)$row['shortcut'] ?: $row['uid'];
                    } elseif ($row['shortcut_mode'] == self::SHORTCUT_MODE_PARENT_PAGE) {
                        // Shortcut to parent page
                        $searchField = 'uid';
                        $searchUid = $row['pid'];
                    }
                    $count = $GLOBALS['TYPO3_DB']->exec_SELECTcountRows('uid', 'pages', $searchField . '=' . $searchUid . $this->where_hid_del . $this->where_groupAccess . ' ' . $addWhere);
                    if (!$count) {
                        unset($row);
                    }
                } elseif ($row['doktype'] == self::DOKTYPE_SHORTCUT && $checkShortcuts) {
                    // Neither shortcut target nor mode is set. Remove the page from the menu.
                    unset($row);
                }
                // Add to output array after overlaying language:
                if (is_array($row)) {
                    $output[$origUid] = $this->getPageOverlay($row);
                }
            }
        }
        $GLOBALS['TYPO3_DB']->sql_free_result($res);
        return $output;
    }

    public function getDomainStartPage($domain, $path = '', $request_uri = '') {
        $domain = explode(':', $domain);
        $domain = strtolower(preg_replace('/\\.$/', '', $domain[0]));
        // Removing extra trailing slashes
        $path = trim(preg_replace('/\\/[^\\/]*$/', '', $path));
        // Appending to domain string
        $domain .= $path;
        $domain = preg_replace('/\\/*$/', '', $domain);
        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('pages.uid,sys_domain.redirectTo,sys_domain.redirectHttpStatusCode,sys_domain.prepend_params', 'pages,sys_domain', 'pages.uid=sys_domain.pid
                        AND sys_domain.hidden=0
                        AND (sys_domain.domainName=' . $GLOBALS['TYPO3_DB']->fullQuoteStr($domain, 'sys_domain') . ' OR sys_domain.domainName=' . $GLOBALS['TYPO3_DB']->fullQuoteStr(($domain . '/'), 'sys_domain') . ') ' . $this->where_hid_del . $this->where_groupAccess, '', '', 1);
        $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
        $GLOBALS['TYPO3_DB']->sql_free_result($res);
        if ($row) {
            if ($row['redirectTo']) {
                $redirectUrl = $row['redirectTo'];
                if ($row['prepend_params']) {
                    $redirectUrl = rtrim($redirectUrl, '/');
                    $prependStr = ltrim(substr($request_uri, strlen($path)), '/');
                    $redirectUrl .= '/' . $prependStr;
                }
                $statusCode = (int)$row['redirectHttpStatusCode'];
                if ($statusCode && defined('TYPO3\\CMS\\Core\\Utility\\HttpUtility::HTTP_STATUS_' . $statusCode)) {
                    \TYPO3\CMS\Core\Utility\HttpUtility::redirect($redirectUrl, constant('TYPO3\\CMS\\Core\\Utility\\HttpUtility::HTTP_STATUS_' . $statusCode));
                } else {
                    \TYPO3\CMS\Core\Utility\HttpUtility::redirect($redirectUrl, \TYPO3\CMS\Core\Utility\HttpUtility::HTTP_STATUS_301);
                }
                die;
            } else {
                return $row['uid'];
            }
        }
    }

    public function getRootLine($uid, $MP = '', $ignoreMPerrors = FALSE) {
        $rootline = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Utility\\RootlineUtility', $uid, $MP, $this);
        try {
            return $rootline->get();
        } catch (\RuntimeException $ex) {
            if ($ignoreMPerrors) {
                $this->error_getRootLine = $ex->getMessage();
                if (substr($this->error_getRootLine, -7) == 'uid -1.') {
                    $this->error_getRootLine_failPid = -1;
                }
                return array();
            } elseif ($ex->getCode() === 1343589451) {
                return array();
            }
            throw $ex;
        }
    }

    public function getPathFromRootline($rl, $len = 20) {
        if (is_array($rl)) {
            $c = count($rl);
            $path = '';
            for ($a = 0; $a < $c; $a++) {
                if ($rl[$a]['uid']) {
                    $path .= '/' . GeneralUtility::fixed_lgd_cs(strip_tags($rl[$a]['title']), $len);
                }
            }
            return $path;
        }
    }

    public function getExtURL($pagerow, $disable = 0) {
        if ($pagerow['doktype'] == self::DOKTYPE_LINK && !$disable) {
            $redirectTo = $this->urltypes[$pagerow['urltype']] . $pagerow['url'];
            // If relative path, prefix Site URL:
            $uI = parse_url($redirectTo);
            // Relative path assumed now.
            if (!$uI['scheme'] && $redirectTo[0] !== '/') {
                $redirectTo = GeneralUtility::getIndpEnv('TYPO3_SITE_URL') . $redirectTo;
            }
            return $redirectTo;
        }
    }

    public function getMountPointInfo($pageId, $pageRec = FALSE, $prevMountPids = array(), $firstPageUid = 0) {
        $result = FALSE;
        if ($GLOBALS['TYPO3_CONF_VARS']['FE']['enable_mount_pids']) {
            if (isset($this->cache_getMountPointInfo[$pageId])) {
                return $this->cache_getMountPointInfo[$pageId];
            }
            // Get pageRec if not supplied:
            if (!is_array($pageRec)) {
                $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('uid,pid,doktype,mount_pid,mount_pid_ol,t3ver_state', 'pages', 'uid=' . (int)$pageId . ' AND pages.deleted=0 AND pages.doktype<>255');
                $pageRec = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
                $GLOBALS['TYPO3_DB']->sql_free_result($res);
                // Only look for version overlay if page record is not supplied; This assumes
                // that the input record is overlaid with preview version, if any!
                $this->versionOL('pages', $pageRec);
            }
            // Set first Page uid:
            if (!$firstPageUid) {
                $firstPageUid = $pageRec['uid'];
            }
            // Look for mount pid value plus other required circumstances:
            $mount_pid = (int)$pageRec['mount_pid'];
            if (is_array($pageRec) && $pageRec['doktype'] == self::DOKTYPE_MOUNTPOINT && $mount_pid > 0 && !in_array($mount_pid, $prevMountPids)) {
                // Get the mount point record (to verify its general existence):
                $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('uid,pid,doktype,mount_pid,mount_pid_ol,t3ver_state', 'pages', 'uid=' . $mount_pid . ' AND pages.deleted=0 AND pages.doktype<>255');
                $mountRec = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
                $GLOBALS['TYPO3_DB']->sql_free_result($res);
                $this->versionOL('pages', $mountRec);
                if (is_array($mountRec)) {
                    // Look for recursive mount point:
                    $prevMountPids[] = $mount_pid;
                    $recursiveMountPid = $this->getMountPointInfo($mount_pid, $mountRec, $prevMountPids, $firstPageUid);
                    // Return mount point information:
                    $result = $recursiveMountPid ?: array(
                        'mount_pid' => $mount_pid,
                        'overlay' => $pageRec['mount_pid_ol'],
                        'MPvar' => $mount_pid . '-' . $firstPageUid,
                        'mount_point_rec' => $pageRec,
                        'mount_pid_rec' => $mountRec
                    );
                } else {
                    // Means, there SHOULD have been a mount point, but there was none!
                    $result = -1;
                }
            }
        }
        $this->cache_getMountPointInfo[$pageId] = $result;
        return $result;
    }

    /********************************
     *
     * Selecting records in general
     *
     ********************************/

    public function checkRecord($table, $uid, $checkPage = 0) {
        $uid = (int)$uid;
        if (is_array($GLOBALS['TCA'][$table]) && $uid > 0) {
            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', $table, 'uid = ' . $uid . $this->enableFields($table));
            $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
            $GLOBALS['TYPO3_DB']->sql_free_result($res);
            if ($row) {
                $this->versionOL($table, $row);
                if (is_array($row)) {
                    if ($checkPage) {
                        $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('uid', 'pages', 'uid=' . (int)$row['pid'] . $this->enableFields('pages'));
                        $numRows = $GLOBALS['TYPO3_DB']->sql_num_rows($res);
                        $GLOBALS['TYPO3_DB']->sql_free_result($res);
                        if ($numRows > 0) {
                            return $row;
                        } else {
                            return 0;
                        }
                    } else {
                        return $row;
                    }
                }
            }
        }
    }

    public function getRawRecord($table, $uid, $fields = '*', $noWSOL = FALSE) {
        $uid = (int)$uid;
        // Excluding pages here so we can ask the function BEFORE TCA gets initialized.
        // Support for this is followed up in deleteClause()...
        if ((is_array($GLOBALS['TCA'][$table]) || $table == 'pages') && $uid > 0) {
            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery($fields, $table, 'uid = ' . $uid . $this->deleteClause($table));
            $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
            $GLOBALS['TYPO3_DB']->sql_free_result($res);
            if ($row) {
                if (!$noWSOL) {
                    $this->versionOL($table, $row);
                }
                if (is_array($row)) {
                    return $row;
                }
            }
        }
    }

    public function getRecordsByField($theTable, $theField, $theValue, $whereClause = '', $groupBy = '', $orderBy = '', $limit = '') {
        if (is_array($GLOBALS['TCA'][$theTable])) {
            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', $theTable, $theField . '=' . $GLOBALS['TYPO3_DB']->fullQuoteStr($theValue, $theTable) . $this->deleteClause($theTable) . ' ' . $whereClause, $groupBy, $orderBy, $limit);
            $rows = array();
            while ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res)) {
                if (is_array($row)) {
                    $rows[] = $row;
                }
            }
            $GLOBALS['TYPO3_DB']->sql_free_result($res);
            if (count($rows)) {
                return $rows;
            }
        }
    }

    /********************************
     *
     * Caching and standard clauses
     *
     ********************************/

    static public function getHash($hash, $expTime = 0) {
        $hashContent = NULL;
        $contentHashCache = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Cache\\CacheManager')->getCache('cache_hash');
        $cacheEntry = $contentHashCache->get($hash);
        if ($cacheEntry) {
            $hashContent = $cacheEntry;
        }
        return $hashContent;
    }

    static public function storeHash($hash, $data, $ident, $lifetime = 0) {
        GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Cache\\CacheManager')->getCache('cache_hash')->set($hash, $data, array('ident_' . $ident), (int)$lifetime);
    }

    public function deleteClause($table) {
        // Hardcode for pages because TCA might not be loaded yet (early frontend
        // initialization)
        if ($table === 'pages') {
            return ' AND pages.deleted=0';
        } else {
            return $GLOBALS['TCA'][$table]['ctrl']['delete'] ? ' AND ' . $table . '.' . $GLOBALS['TCA'][$table]['ctrl']['delete'] . '=0' : '';
        }
    }

    public function enableFields($table, $show_hidden = -1, $ignore_array = array(), $noVersionPreview = FALSE) {
        if ($show_hidden === -1 && is_object($GLOBALS['TSFE'])) {
            // If show_hidden was not set from outside and if TSFE is an object, set it
            // based on showHiddenPage and showHiddenRecords from TSFE
            $show_hidden = $table == 'pages' ? $GLOBALS['TSFE']->showHiddenPage : $GLOBALS['TSFE']->showHiddenRecords;
        }
        if ($show_hidden === -1) {
            $show_hidden = 0;
        }
        // If show_hidden was not changed during the previous evaluation, do it here.
        $ctrl = $GLOBALS['TCA'][$table]['ctrl'];
        $query = '';
        if (is_array($ctrl)) {
            // Delete field check:
            if ($ctrl['delete']) {
                $query .= ' AND ' . $table . '.' . $ctrl['delete'] . '=0';
            }
            if ($ctrl['versioningWS']) {
                if (!$this->versioningPreview) {
                    // Filter out placeholder records (new/moved/deleted items)
                    // in case we are NOT in a versioning preview (that means we are online!)
                    $query .= ' AND ' . $table . '.t3ver_state<=' . new VersionState(VersionState::DEFAULT_STATE);
                } else {
                    if ($table !== 'pages') {
                        // show only records of live and of the current workspace
                        // in case we are in a versioning preview
                        $query .= ' AND (' .
                                    $table . '.t3ver_wsid=0 OR ' .
                                    $table . '.t3ver_wsid=' . (int)$this->versioningWorkspaceId .
                                    ')';
                    }
                }

                // Filter out versioned records
                if (!$noVersionPreview && empty($ignore_array['pid'])) {
                    $query .= ' AND ' . $table . '.pid<>-1';
                }
            }

            // Enable fields:
            if (is_array($ctrl['enablecolumns'])) {
                // In case of versioning-preview, enableFields are ignored (checked in
                // versionOL())
                if (!$this->versioningPreview || !$ctrl['versioningWS'] || $noVersionPreview) {
                    if ($ctrl['enablecolumns']['disabled'] && !$show_hidden && !$ignore_array['disabled']) {
                        $field = $table . '.' . $ctrl['enablecolumns']['disabled'];
                        $query .= ' AND ' . $field . '=0';
                    }
                    if ($ctrl['enablecolumns']['starttime'] && !$ignore_array['starttime']) {
                        $field = $table . '.' . $ctrl['enablecolumns']['starttime'];
                        $query .= ' AND ' . $field . '<=' . $GLOBALS['SIM_ACCESS_TIME'];
                    }
                    if ($ctrl['enablecolumns']['endtime'] && !$ignore_array['endtime']) {
                        $field = $table . '.' . $ctrl['enablecolumns']['endtime'];
                        $query .= ' AND (' . $field . '=0 OR ' . $field . '>' . $GLOBALS['SIM_ACCESS_TIME'] . ')';
                    }
                    if ($ctrl['enablecolumns']['fe_group'] && !$ignore_array['fe_group']) {
                        $field = $table . '.' . $ctrl['enablecolumns']['fe_group'];
                        $query .= $this->getMultipleGroupsWhereClause($field, $table);
                    }
                    // Call hook functions for additional enableColumns
                    // It is used by the extension ingmar_accessctrl which enables assigning more
                    // than one usergroup to content and page records
                    if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['addEnableColumns'])) {
                        $_params = array(
                            'table' => $table,
                            'show_hidden' => $show_hidden,
                            'ignore_array' => $ignore_array,
                            'ctrl' => $ctrl
                        );
                        foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_page.php']['addEnableColumns'] as $_funcRef) {
                            $query .= GeneralUtility::callUserFunction($_funcRef, $_params, $this);
                        }
                    }
                }
            }
        } else {
            throw new \InvalidArgumentException('There is no entry in the $TCA array for the table "' . $table . '". This means that the function enableFields() is ' . 'called with an invalid table name as argument.', 1283790586);
        }
        return $query;
    }

    public function getMultipleGroupsWhereClause($field, $table) {
        $memberGroups = GeneralUtility::intExplode(',', $GLOBALS['TSFE']->gr_list);
        $orChecks = array();
        // If the field is empty, then OK
        $orChecks[] = $field . '=\'\'';
        // If the field is NULL, then OK
        $orChecks[] = $field . ' IS NULL';
        // If the field contsains zero, then OK
        $orChecks[] = $field . '=\'0\'';
        foreach ($memberGroups as $value) {
            $orChecks[] = $GLOBALS['TYPO3_DB']->listQuery($field, $value, $table);
        }
        return ' AND (' . implode(' OR ', $orChecks) . ')';
    }

    /**********************
     *
     * Versioning Preview
     *
     **********************/

    public function fixVersioningPid($table, &$rr) {
        if ($this->versioningPreview && is_array($rr) && $rr['pid'] == -1 && ($table == 'pages' || $GLOBALS['TCA'][$table]['ctrl']['versioningWS'])) {
            // Have to hardcode it for "pages" table since TCA is not loaded at this moment!
            // Check values for t3ver_oid and t3ver_wsid:
            if (isset($rr['t3ver_oid']) && isset($rr['t3ver_wsid'])) {
                // If "t3ver_oid" is already a field, just set this:
                $oid = $rr['t3ver_oid'];
                $wsid = $rr['t3ver_wsid'];
            } else {
                // Otherwise we have to expect "uid" to be in the record and look up based
                // on this:
                $newPidRec = $this->getRawRecord($table, $rr['uid'], 't3ver_oid,t3ver_wsid', TRUE);
                if (is_array($newPidRec)) {
                    $oid = $newPidRec['t3ver_oid'];
                    $wsid = $newPidRec['t3ver_wsid'];
                }
            }
            // If workspace ids matches and ID of current online version is found, look up
            // the PID value of that:
            if ($oid && ((int)$this->versioningWorkspaceId === 0 && $this->checkWorkspaceAccess($wsid) || (int)$wsid === (int)$this->versioningWorkspaceId)) {
                $oidRec = $this->getRawRecord($table, $oid, 'pid', TRUE);
                if (is_array($oidRec)) {
                    // SWAP uid as well? Well no, because when fixing a versioning PID happens it is
                    // assumed that this is a "branch" type page and therefore the uid should be
                    // kept (like in versionOL()). However if the page is NOT a branch version it
                    // should not happen - but then again, direct access to that uid should not
                    // happen!
                    $rr['_ORIG_pid'] = $rr['pid'];
                    $rr['pid'] = $oidRec['pid'];
                }
            }
        }
        // Changing PID in case of moving pointer:
        if ($movePlhRec = $this->getMovePlaceholder($table, $rr['uid'], 'pid')) {
            $rr['pid'] = $movePlhRec['pid'];
        }
    }

    public function versionOL($table, &$row, $unsetMovePointers = FALSE, $bypassEnableFieldsCheck = FALSE) {
        if ($this->versioningPreview && is_array($row)) {
            // will overlay any movePlhOL found with the real record, which in turn
            // will be overlaid with its workspace version if any.
            $movePldSwap = $this->movePlhOL($table, $row);
            // implode(',',array_keys($row)) = Using fields from original record to make
            // sure no additional fields are selected. This is best for eg. getPageOverlay()
            // Computed properties are excluded since those would lead to SQL errors.
            $fieldNames = implode(',', array_keys($this->purgeComputedProperties($row)));
            if ($wsAlt = $this->getWorkspaceVersionOfRecord($this->versioningWorkspaceId, $table, $row['uid'], $fieldNames, $bypassEnableFieldsCheck)) {
                if (is_array($wsAlt)) {
                    // Always fix PID (like in fixVersioningPid() above). [This is usually not
                    // the important factor for versioning OL]
                    // Keep the old (-1) - indicates it was a version...
                    $wsAlt['_ORIG_pid'] = $wsAlt['pid'];
                    // Set in the online versions PID.
                    $wsAlt['pid'] = $row['pid'];
                    // For versions of single elements or page+content, preserve online UID and PID
                    // (this will produce true "overlay" of element _content_, not any references)
                    // For page+content the "_ORIG_uid" should actually be used as PID for selection
                    // of tables with "versioning_followPages" enabled.
                    $wsAlt['_ORIG_uid'] = $wsAlt['uid'];
                    $wsAlt['uid'] = $row['uid'];
                    // Translate page alias as well so links are pointing to the _online_ page:
                    if ($table === 'pages') {
                        $wsAlt['alias'] = $row['alias'];
                    }
                    // Changing input record to the workspace version alternative:
                    $row = $wsAlt;
                    // Check if it is deleted/new
                    $rowVersionState = VersionState::cast($row['t3ver_state']);
                    if (
                        $rowVersionState->equals(VersionState::NEW_PLACEHOLDER)
                        || $rowVersionState->equals(VersionState::DELETE_PLACEHOLDER)
                    ) {
                        // Unset record if it turned out to be deleted in workspace
                        $row = FALSE;
                    }
                    // Check if move-pointer in workspace (unless if a move-placeholder is the
                    // reason why it appears!):
                    // You have to specifically set $unsetMovePointers in order to clear these
                    // because it is normally a display issue if it should be shown or not.
                    if (
                        ($rowVersionState->equals(VersionState::MOVE_POINTER)
                            && !$movePldSwap
                        ) && $unsetMovePointers
                    ) {
                        // Unset record if it turned out to be deleted in workspace
                        $row = FALSE;
                    }
                } else {
                    // No version found, then check if t3ver_state = VersionState::NEW_PLACEHOLDER
                    // (online version is dummy-representation)
                    // Notice, that unless $bypassEnableFieldsCheck is TRUE, the $row is unset if
                    // enablefields for BOTH the version AND the online record deselects it. See
                    // note for $bypassEnableFieldsCheck
                    if ($wsAlt <= -1 || VersionState::cast($row['t3ver_state'])->indicatesPlaceholder()) {
                        // Unset record if it turned out to be "hidden"
                        $row = FALSE;
                    }
                }
            }
        }
    }

    public function movePlhOL($table, &$row) {
        if (
            ($table == 'pages'
                || (int)$GLOBALS['TCA'][$table]['ctrl']['versioningWS'] >= 2
            ) && (int)VersionState::cast($row['t3ver_state'])->equals(VersionState::MOVE_PLACEHOLDER)
        ) {
            // Only for WS ver 2... (moving)
            // If t3ver_move_id is not found, then find it (but we like best if it is here)
            if (!isset($row['t3ver_move_id'])) {
                $moveIDRec = $this->getRawRecord($table, $row['uid'], 't3ver_move_id', TRUE);
                $moveID = $moveIDRec['t3ver_move_id'];
            } else {
                $moveID = $row['t3ver_move_id'];
            }
            // Find pointed-to record.
            if ($moveID) {
                $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(implode(',', array_keys($this->purgeComputedProperties($row))), $table, 'uid=' . (int)$moveID . $this->enableFields($table));
                $origRow = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
                $GLOBALS['TYPO3_DB']->sql_free_result($res);
                if ($origRow) {
                    $row = $origRow;
                    return TRUE;
                }
            }
        }
        return FALSE;
    }

    public function getMovePlaceholder($table, $uid, $fields = '*') {
        if ($this->versioningPreview) {
            $workspace = (int)$this->versioningWorkspaceId;
            if (($table == 'pages' || (int)$GLOBALS['TCA'][$table]['ctrl']['versioningWS'] >= 2) && $workspace !== 0) {
                // Select workspace version of record:
                $row = $GLOBALS['TYPO3_DB']->exec_SELECTgetSingleRow($fields, $table, 'pid<>-1 AND
                        t3ver_state=' . new VersionState(VersionState::MOVE_PLACEHOLDER) . ' AND
                        t3ver_move_id=' . (int)$uid . ' AND
                        t3ver_wsid=' . (int)$workspace . $this->deleteClause($table));
                if (is_array($row)) {
                    return $row;
                }
            }
        }
        return FALSE;
    }

    public function getWorkspaceVersionOfRecord($workspace, $table, $uid, $fields = '*', $bypassEnableFieldsCheck = FALSE) {
        if ($workspace !== 0 && !empty($GLOBALS['TCA'][$table]['ctrl']['versioningWS'])) {
            $workspace = (int)$workspace;
            $uid = (int)$uid;
            // Have to hardcode it for "pages" table since TCA is not loaded at this moment!
            // Setting up enableFields for version record:
            if ($table == 'pages') {
                $enFields = $this->versioningPreview_where_hid_del;
            } else {
                $enFields = $this->enableFields($table, -1, array(), TRUE);
            }
            // Select workspace version of record, only testing for deleted.
            $newrow = $GLOBALS['TYPO3_DB']->exec_SELECTgetSingleRow($fields, $table, 'pid=-1 AND
                    t3ver_oid=' . $uid . ' AND
                    t3ver_wsid=' . $workspace . $this->deleteClause($table));
            // If version found, check if it could have been selected with enableFields on
            // as well:
            if (is_array($newrow)) {
                if ($bypassEnableFieldsCheck || $GLOBALS['TYPO3_DB']->exec_SELECTgetSingleRow('uid', $table, 'pid=-1 AND
                        t3ver_oid=' . $uid . ' AND
                        t3ver_wsid=' . $workspace . $enFields)) {
                    // Return offline version, tested for its enableFields.
                    return $newrow;
                } else {
                    // Return -1 because offline version was de-selected due to its enableFields.
                    return -1;
                }
            } else {
                // OK, so no workspace version was found. Then check if online version can be
                // selected with full enable fields and if so, return 1:
                if ($bypassEnableFieldsCheck || $GLOBALS['TYPO3_DB']->exec_SELECTgetSingleRow('uid', $table, 'uid=' . $uid . $enFields)) {
                    // Means search was done, but no version found.
                    return 1;
                } else {
                    // Return -2 because the online record was de-selected due to its enableFields.
                    return -2;
                }
            }
        }
        // No look up in database because versioning not enabled / or workspace not
        // offline
        return FALSE;
    }

    public function checkWorkspaceAccess($wsid) {
        if (!$GLOBALS['BE_USER'] || !\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded('workspaces')) {
            return FALSE;
        }
        if (isset($this->workspaceCache[$wsid])) {
            $ws = $this->workspaceCache[$wsid];
        } else {
            if ($wsid > 0) {
                // No $GLOBALS['TCA'] yet!
                $ws = $GLOBALS['TYPO3_DB']->exec_SELECTgetSingleRow('*', 'sys_workspace', 'uid=' . (int)$wsid . ' AND deleted=0');
                if (!is_array($ws)) {
                    return FALSE;
                }
            } else {
                $ws = $wsid;
            }
            $ws = $GLOBALS['BE_USER']->checkWorkspace($ws);
            $this->workspaceCache[$wsid] = $ws;
        }
        return $ws['_ACCESS'] != '';
    }

    public function getFileReferences($tableName, $fieldName, array $element) {
        $fileRepository = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Resource\\FileRepository');
        $currentId = !empty($element['uid']) ? $element['uid'] : 0;

        // Fetch the references of the default element
        $references = $fileRepository->findByRelation($tableName, $fieldName, $currentId);

        $localizedId = NULL;
        if (isset($element['_LOCALIZED_UID'])) {
            $localizedId = $element['_LOCALIZED_UID'];
        } elseif (isset($element['_PAGES_OVERLAY_UID'])) {
            $localizedId = $element['_PAGES_OVERLAY_UID'];
        }

        if (!empty($GLOBALS['TCA'][$tableName]['ctrl']['transForeignTable'])) {
            $tableName = $GLOBALS['TCA'][$tableName]['ctrl']['transForeignTable'];
        }

        $isTableLocalizable = (
            !empty($GLOBALS['TCA'][$tableName]['ctrl']['languageField'])
            && !empty($GLOBALS['TCA'][$tableName]['ctrl']['transOrigPointerField'])
        );
        if ($isTableLocalizable && $localizedId !== NULL) {
            $localizedReferences = $fileRepository->findByRelation($tableName, $fieldName, $localizedId);
            $localizedReferencesValue = $localizedReferences ?: '';
            if ($this->shouldFieldBeOverlaid($tableName, $fieldName, $localizedReferencesValue)) {
                $references = $localizedReferences;
            }
        }

        return $references;
    }

    protected function purgeComputedProperties(array $row) {
        foreach ($this->computedPropertyNames as $computedPropertyName) {
            if (array_key_exists($computedPropertyName, $row)) {
                unset($row[$computedPropertyName]);
            }
        }
        return $row;
    }

    protected function shouldFieldBeOverlaid($table, $field, $value) {
        $l10n_mode = isset($GLOBALS['TCA'][$table]['columns'][$field]['l10n_mode'])
            ? $GLOBALS['TCA'][$table]['columns'][$field]['l10n_mode']
            : '';

        $shouldFieldBeOverlaid = TRUE;

        if ($l10n_mode === 'exclude') {
            $shouldFieldBeOverlaid = FALSE;
        } elseif ($l10n_mode === 'mergeIfNotBlank') {
            $checkValue = $value;

            // 0 values are considered blank when coming from a group field
            if (empty($value) && $GLOBALS['TCA'][$table]['columns'][$field]['config']['type'] === 'group') {
                $checkValue = '';
            }

            if ($checkValue === array() || !is_array($checkValue) && trim($checkValue) === '') {
                $shouldFieldBeOverlaid = FALSE;
            }
        }

        return $shouldFieldBeOverlaid;
    }
}