SetupModuleController.php

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<?php
namespace TYPO3\CMS\Setup\Controller;

use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3\CMS\Core\Utility\GeneralUtility;

class SetupModuleController {

    // Internal variables:
    public $MCONF = array();

    public $MOD_MENU = array();

    public $MOD_SETTINGS = array();

    public $doc;

    public $content;

    public $overrideConf;

    public $OLD_BE_USER;

    public $languageUpdate;

    protected $pagetreeNeedsRefresh = FALSE;

    protected $isAdmin;

    protected $dividers2tabs;

    protected $tsFieldConf;

    protected $saveData = FALSE;

    protected $passwordIsUpdated = FALSE;

    protected $passwordIsSubmitted = FALSE;

    protected $setupIsUpdated = FALSE;

    protected $tempDataIsCleared = FALSE;

    protected $settingsAreResetToDefault = FALSE;

    protected $formProtection;

    /******************************
     *
     * Saving data
     *
     ******************************/
    public function __construct() {
        $this->formProtection = \TYPO3\CMS\Core\FormProtection\FormProtectionFactory::get();
    }

    public function getFormProtection() {
        return $this->formProtection;
    }

    public function storeIncomingData() {
        // First check if something is submitted in the data-array from POST vars
        $d = GeneralUtility::_POST('data');
        $columns = $GLOBALS['TYPO3_USER_SETTINGS']['columns'];
        $beUserId = $GLOBALS['BE_USER']->user['uid'];
        $storeRec = array();
        $fieldList = $this->getFieldsFromShowItem();
        if (is_array($d) && $this->formProtection->validateToken((string) GeneralUtility::_POST('formToken'), 'BE user setup', 'edit')) {
            // UC hashed before applying changes
            $save_before = md5(serialize($GLOBALS['BE_USER']->uc));
            // PUT SETTINGS into the ->uc array:
            // Reload left frame when switching BE language
            if (isset($d['lang']) && $d['lang'] != $GLOBALS['BE_USER']->uc['lang']) {
                $this->languageUpdate = TRUE;
            }
            // Reload pagetree if the title length is changed
            if (isset($d['titleLen']) && $d['titleLen'] !== $GLOBALS['BE_USER']->uc['titleLen']) {
                $this->pagetreeNeedsRefresh = TRUE;
            }
            if ($d['setValuesToDefault']) {
                // If every value should be default
                $GLOBALS['BE_USER']->resetUC();
                $this->settingsAreResetToDefault = TRUE;
            } elseif ($d['clearSessionVars']) {
                foreach ($GLOBALS['BE_USER']->uc as $key => $value) {
                    if (!isset($columns[$key])) {
                        unset($GLOBALS['BE_USER']->uc[$key]);
                    }
                }
                $this->tempDataIsCleared = TRUE;
            } elseif ($d['save']) {
                // Save all submitted values if they are no array (arrays are with table=be_users) and exists in $GLOBALS['TYPO3_USER_SETTINGS'][columns]
                foreach ($columns as $field => $config) {
                    if (!in_array($field, $fieldList)) {
                        continue;
                    }
                    if ($config['table']) {
                        if ($config['table'] == 'be_users' && !in_array($field, array('password', 'password2', 'email', 'realName', 'admin'))) {
                            if (!isset($config['access']) || $this->checkAccess($config) && $GLOBALS['BE_USER']->user[$field] !== $d['be_users'][$field]) {
                                if ($config['type'] === 'check') {
                                    $fieldValue = isset($d['be_users'][$field]) ? 1 : 0;
                                } else {
                                    $fieldValue = $d['be_users'][$field];
                                }
                                $storeRec['be_users'][$beUserId][$field] = $fieldValue;
                                $GLOBALS['BE_USER']->user[$field] = $fieldValue;
                            }
                        }
                    }
                    if ($config['type'] == 'check') {
                        $GLOBALS['BE_USER']->uc[$field] = isset($d[$field]) ? 1 : 0;
                    } else {
                        $GLOBALS['BE_USER']->uc[$field] = htmlspecialchars($d[$field]);
                    }
                }
                // Personal data for the users be_user-record (email, name, password...)
                // If email and name is changed, set it in the users record:
                $be_user_data = $d['be_users'];
                // Possibility to modify the transmitted values. Useful to do transformations, like RSA password decryption
                if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/setup/mod/index.php']['modifyUserDataBeforeSave'])) {
                    foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/setup/mod/index.php']['modifyUserDataBeforeSave'] as $function) {
                        $params = array('be_user_data' => &$be_user_data);
                        GeneralUtility::callUserFunction($function, $params, $this);
                    }
                }
                $this->passwordIsSubmitted = strlen($be_user_data['password']) > 0;
                $passwordIsConfirmed = $this->passwordIsSubmitted && $be_user_data['password'] === $be_user_data['password2'];
                // Update the real name:
                if ($be_user_data['realName'] !== $GLOBALS['BE_USER']->user['realName']) {
                    $GLOBALS['BE_USER']->user['realName'] = ($storeRec['be_users'][$beUserId]['realName'] = substr($be_user_data['realName'], 0, 80));
                }
                // Update the email address:
                if ($be_user_data['email'] !== $GLOBALS['BE_USER']->user['email']) {
                    $GLOBALS['BE_USER']->user['email'] = ($storeRec['be_users'][$beUserId]['email'] = substr($be_user_data['email'], 0, 80));
                }
                // Update the password:
                if ($passwordIsConfirmed) {
                    $storeRec['be_users'][$beUserId]['password'] = $be_user_data['password2'];
                    $this->passwordIsUpdated = TRUE;
                }
                $this->saveData = TRUE;
            }
            // Inserts the overriding values.
            $GLOBALS['BE_USER']->overrideUC();
            $save_after = md5(serialize($GLOBALS['BE_USER']->uc));
            // If something in the uc-array of the user has changed, we save the array...
            if ($save_before != $save_after) {
                $GLOBALS['BE_USER']->writeUC($GLOBALS['BE_USER']->uc);
                $GLOBALS['BE_USER']->writelog(254, 1, 0, 1, 'Personal settings changed', array());
                $this->setupIsUpdated = TRUE;
            }
            // If the temporary data has been cleared, lets make a log note about it
            if ($this->tempDataIsCleared) {
                $GLOBALS['BE_USER']->writelog(254, 1, 0, 1, $GLOBALS['LANG']->getLL('tempDataClearedLog'), array());
            }
            // Persist data if something has changed:
            if (count($storeRec) && $this->saveData) {
                // Make instance of TCE for storing the changes.
                $tce = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\DataHandling\\DataHandler');
                $tce->stripslashes_values = FALSE;
                // This is so the user can actually update his user record.
                $beUser = $GLOBALS['BE_USER'];
                $isAdmin = $beUser->user['admin'];
                $beUser->user['admin'] = 1;
                $tce->start($storeRec, array(), $beUser);
                // This is to make sure that the users record can be updated even if in another workspace. This is tolerated.
                $tce->bypassWorkspaceRestrictions = TRUE;
                $tce->process_datamap();
                unset($tce);
                if (!$this->passwordIsUpdated || count($storeRec['be_users'][$beUserId]) > 1) {
                    $this->setupIsUpdated = TRUE;
                }
                // Restore admin status after processing
                $beUser->user['admin'] = $isAdmin;
            }
        }
    }

    /******************************
     *
     * Rendering module
     *
     ******************************/
    public function init() {
        $GLOBALS['LANG']->includeLLFile('EXT:setup/mod/locallang.xlf');
        $this->MCONF = $GLOBALS['MCONF'];
        // Returns the script user - that is the REAL logged in user! ($GLOBALS[BE_USER] might be another user due to simulation!)
        $scriptUser = $this->getRealScriptUserObj();
        // ... and checking module access for the logged in user.
        $scriptUser->modAccess($this->MCONF, 1);
        $this->isAdmin = $scriptUser->isAdmin();
        // Getting the 'override' values as set might be set in User TSconfig
        $this->overrideConf = $GLOBALS['BE_USER']->getTSConfigProp('setup.override');
        // Getting the disabled fields might be set in User TSconfig (eg setup.fields.password.disabled=1)
        $this->tsFieldConf = $GLOBALS['BE_USER']->getTSConfigProp('setup.fields');
        // id password is disabled, disable repeat of password too (password2)
        if (isset($this->tsFieldConf['password.']) && $this->tsFieldConf['password.']['disabled']) {
            $this->tsFieldConf['password2.']['disabled'] = 1;
        }
        // Create instance of object for output of data
        $this->doc = GeneralUtility::makeInstance('TYPO3\\CMS\\Backend\\Template\\DocumentTemplate');
        $this->doc->backPath = $GLOBALS['BACK_PATH'];
        $this->doc->setModuleTemplate('EXT:setup/Resources/Private/Templates/setup.html');
        $this->doc->form = '<form action="' . BackendUtility::getModuleUrl('user_setup') . '" method="post" name="usersetup" enctype="application/x-www-form-urlencoded">';
        $this->doc->tableLayout = array(
            'defRow' => array(
                '0' => array('<td class="td-label">', '</td>'),
                'defCol' => array('<td valign="top">', '</td>')
            )
        );
        $this->doc->table_TR = '<tr>';
        $this->doc->table_TABLE = '<table border="0" cellspacing="1" cellpadding="2" class="typo3-usersettings">';
        $this->doc->JScode .= $this->getJavaScript();
    }

    protected function getJavaScript() {
        $javaScript = '';
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/setup/mod/index.php']['setupScriptHook'])) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/setup/mod/index.php']['setupScriptHook'] as $function) {
                $params = array();
                $javaScript .= GeneralUtility::callUserFunction($function, $params, $this);
            }
        }
        return $javaScript;
    }

    public function main() {
        global $LANG;
        if ($this->languageUpdate) {
            $this->doc->JScodeArray['languageUpdate'] .= '
                if (top.refreshMenu) {
                    top.refreshMenu();
                } else {
                    top.TYPO3ModuleMenu.refreshMenu();
                }
            ';
        }
        if ($this->pagetreeNeedsRefresh) {
            BackendUtility::setUpdateSignal('updatePageTree');
        }
        // Start page:
        $this->doc->loadJavascriptLib('sysext/backend/Resources/Public/JavaScript/md5.js');
        // Use a wrapper div
        $this->content .= '<div id="user-setup-wrapper">';
        // Load available backend modules
        $this->loadModules = GeneralUtility::makeInstance('TYPO3\\CMS\\Backend\\Module\\ModuleLoader');
        $this->loadModules->observeWorkspaces = TRUE;
        $this->loadModules->load($GLOBALS['TBE_MODULES']);
        $this->content .= $this->doc->header($LANG->getLL('UserSettings'));
        // Show if setup was saved
        if ($this->setupIsUpdated && !$this->tempDataIsCleared && !$this->settingsAreResetToDefault) {
            $flashMessage = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Messaging\\FlashMessage', $LANG->getLL('setupWasUpdated'), $LANG->getLL('UserSettings'));
            $this->content .= $flashMessage->render();
        }
        // Show if temporary data was cleared
        if ($this->tempDataIsCleared) {
            $flashMessage = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Messaging\\FlashMessage', $LANG->getLL('tempDataClearedFlashMessage'), $LANG->getLL('tempDataCleared'));
            $this->content .= $flashMessage->render();
        }
        // Show if temporary data was cleared
        if ($this->settingsAreResetToDefault) {
            $flashMessage = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Messaging\\FlashMessage', $LANG->getLL('settingsAreReset'), $LANG->getLL('resetConfiguration'));
            $this->content .= $flashMessage->render();
        }
        // Notice
        if ($this->setupIsUpdated || $this->settingsAreResetToDefault) {
            $flashMessage = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Messaging\\FlashMessage', $LANG->getLL('activateChanges'), '', \TYPO3\CMS\Core\Messaging\FlashMessage::INFO);
            $this->content .= $flashMessage->render();
        }
        // If password is updated, output whether it failed or was OK.
        if ($this->passwordIsSubmitted) {
            if ($this->passwordIsUpdated) {
                $flashMessage = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Messaging\\FlashMessage', $LANG->getLL('newPassword_ok'), $LANG->getLL('newPassword'));
            } else {
                $flashMessage = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Messaging\\FlashMessage', $LANG->getLL('newPassword_failed'), $LANG->getLL('newPassword'), \TYPO3\CMS\Core\Messaging\FlashMessage::ERROR);
            }
            $this->content .= $flashMessage->render();
        }
        // Render the menu items
        $menuItems = $this->renderUserSetup();
        $this->content .= $this->doc->getDynTabMenu($menuItems, 'user-setup', FALSE, FALSE, 1, FALSE, 1, $this->dividers2tabs);
        $formToken = $this->formProtection->generateToken('BE user setup', 'edit');
        $this->content .= $this->doc->section('', '<input type="hidden" name="simUser" value="' . $this->simUser . '" />
            <input type="hidden" name="formToken" value="' . $formToken . '" />
            <input type="hidden" value="1" name="data[save]" />
            <input type="hidden" name="data[setValuesToDefault]" value="0" id="setValuesToDefault" />
            <input type="hidden" name="data[clearSessionVars]" value="0" id="clearSessionVars" />');
        // End of wrapper div
        $this->content .= '</div>';
        // Setting up the buttons and markers for docheader
        $docHeaderButtons = $this->getButtons();
        $markers['CSH'] = $docHeaderButtons['csh'];
        $markers['CONTENT'] = $this->content;
        // Build the <body> for the module
        $this->content = $this->doc->moduleBody($this->pageinfo, $docHeaderButtons, $markers);
        // Renders the module page
        $this->content = $this->doc->render($LANG->getLL('UserSettings'), $this->content);
    }

    public function printContent() {
        echo $this->content;
    }

    protected function getButtons() {
        $buttons = array(
            'csh' => '',
            'save' => '',
            'shortcut' => ''
        );
        $buttons['csh'] = BackendUtility::cshItem('_MOD_user_setup', '', $GLOBALS['BACK_PATH'], '|', TRUE);
        $buttons['save'] = \TYPO3\CMS\Backend\Utility\IconUtility::getSpriteIcon('actions-document-save', array('html' => '<input type="image" name="data[save]" class="c-inputButton" src="clear.gif" title="' . $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_core.xlf:rm.saveDoc', TRUE) . '" />'));
        if ($GLOBALS['BE_USER']->mayMakeShortcut()) {
            $buttons['shortcut'] = $this->doc->makeShortcutIcon('', '', $this->MCONF['name']);
        }
        return $buttons;
    }

    /******************************
     *
     * Render module
     *
     ******************************/
    protected function renderUserSetup() {
        $result = array();
        $firstTabLabel = '';
        $code = array();
        $i = 0;
        $fieldArray = $this->getFieldsFromShowItem();
        $this->dividers2tabs = isset($GLOBALS['TYPO3_USER_SETTINGS']['ctrl']['dividers2tabs']) ? (int)$GLOBALS['TYPO3_USER_SETTINGS']['ctrl']['dividers2tabs'] : 0;
        $tabLabel = '';
        foreach ($fieldArray as $fieldName) {
            $more = '';
            if (substr($fieldName, 0, 8) == '--div--;') {
                if ($firstTabLabel == '') {
                    // First tab
                    $tabLabel = $this->getLabel(substr($fieldName, 8), '', FALSE);
                    $firstTabLabel = $tabLabel;
                } else {
                    if ($this->dividers2tabs) {
                        $result[] = array(
                            'label' => $tabLabel,
                            'content' => count($code) ? $this->doc->table($code) : ''
                        );
                        $tabLabel = $this->getLabel(substr($fieldName, 8), '', FALSE);
                        $i = 0;
                        $code = array();
                    }
                }
                continue;
            }
            $config = $GLOBALS['TYPO3_USER_SETTINGS']['columns'][$fieldName];
            // Field my be disabled in setup.fields
            if (isset($this->tsFieldConf[$fieldName . '.']['disabled']) && $this->tsFieldConf[$fieldName . '.']['disabled'] == 1) {
                continue;
            }
            if (isset($config['access']) && !$this->checkAccess($config)) {
                continue;
            }
            $label = $this->getLabel($config['label'], $fieldName);
            $label = $this->getCSH($config['csh'] ?: $fieldName, $label);
            $type = $config['type'];
            $eval = $config['eval'];
            $class = $config['class'];
            $style = $config['style'];
            if ($class) {
                $more .= ' class="' . $class . '"';
            }
            if ($style) {
                $more .= ' style="' . $style . '"';
            }
            if (isset($this->overrideConf[$fieldName])) {
                $more .= ' disabled="disabled"';
            }
            $value = $config['table'] == 'be_users' ? $GLOBALS['BE_USER']->user[$fieldName] : $GLOBALS['BE_USER']->uc[$fieldName];
            if (!$value && isset($config['default'])) {
                $value = $config['default'];
            }
            $dataAdd = '';
            if ($config['table'] == 'be_users') {
                $dataAdd = '[be_users]';
            }
            switch ($type) {
            case 'text':
            case 'password':
                $noAutocomplete = '';
                if ($type === 'password') {
                    $value = '';
                    $noAutocomplete = 'autocomplete="off" ';
                }
                $html = '<input id="field_' . $fieldName . '"
                            type="' . $type . '"
                            name="data' . $dataAdd . '[' . $fieldName . ']" ' . $noAutocomplete . 'value="' . htmlspecialchars($value) . '" ' . $GLOBALS['TBE_TEMPLATE']->formWidth(20) . $more . ' />';
                break;
            case 'check':
                if (!$class) {
                    $more .= ' class="check"';
                }
                $html = '<input id="field_' . $fieldName . '"
                                    type="checkbox"
                                    name="data' . $dataAdd . '[' . $fieldName . ']"' . ($value ? ' checked="checked"' : '') . $more . ' />';
                break;
            case 'select':
                if (!$class) {
                    $more .= ' class="select"';
                }
                if ($config['itemsProcFunc']) {
                    $html = GeneralUtility::callUserFunction($config['itemsProcFunc'], $config, $this, '');
                } else {
                    $html = '<select ' . $GLOBALS['TBE_TEMPLATE']->formWidth(20) . ' id="field_' . $fieldName . '" name="data' . $dataAdd . '[' . $fieldName . ']"' . $more . '>' . LF;
                    foreach ($config['items'] as $key => $optionLabel) {
                        $html .= '<option value="' . $key . '"' . ($value == $key ? ' selected="selected"' : '') . '>' . $this->getLabel($optionLabel, '', FALSE) . '</option>' . LF;
                    }
                    $html .= '</select>';
                }
                break;
            case 'user':
                $html = GeneralUtility::callUserFunction($config['userFunc'], $config, $this, '');
                break;
            case 'button':
                $html = '';
                if ($config['onClick']) {
                    $onClick = $config['onClick'];
                    if ($config['onClickLabels']) {
                        foreach ($config['onClickLabels'] as $key => $labelclick) {
                            $config['onClickLabels'][$key] = $this->getLabel($labelclick, '', FALSE);
                        }
                        $onClick = vsprintf($onClick, $config['onClickLabels']);
                    }
                    $html = '<input ' . $GLOBALS['TBE_TEMPLATE']->formWidth(20) . ' type="button" value="' . $this->getLabel($config['buttonlabel'], '', FALSE) . '" onclick="' . $onClick . '" />';
                }
                break;
            default:
                $html = '';
            }
            if ($html) {
                $code[$i][1] = $label;
                $code[$i++][2] = $html;
            }
        }
        if ($this->dividers2tabs == 0) {
            $tabLabel = $firstTabLabel;
        }
        $result[] = array(
            'label' => $tabLabel,
            'content' => count($code) ? $this->doc->table($code) : ''
        );
        return $result;
    }

    /******************************
     *
     * Helper functions
     *
     ******************************/
    protected function getRealScriptUserObj() {
        return is_object($this->OLD_BE_USER) ? $this->OLD_BE_USER : $GLOBALS['BE_USER'];
    }

    public function renderLanguageSelect($params, $pObj) {
        $languageOptions = array();
        // Compile the languages dropdown
        $langDefault = $GLOBALS['LANG']->getLL('lang_default', TRUE);
        $languageOptions[$langDefault] = '<option value=""' . ($GLOBALS['BE_USER']->uc['lang'] === '' ? ' selected="selected"' : '') . '>' . $langDefault . '</option>';
        // Traverse the number of languages
        $locales = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Localization\\Locales');
        $languages = $locales->getLanguages();
        foreach ($languages as $locale => $name) {
            if ($locale !== 'default') {
                $defaultName = isset($GLOBALS['LOCAL_LANG']['default']['lang_' . $locale]) ? $GLOBALS['LOCAL_LANG']['default']['lang_' . $locale][0]['source'] : $name;
                $localizedName = $GLOBALS['LANG']->getLL('lang_' . $locale, TRUE);
                if ($localizedName === '') {
                    $localizedName = htmlspecialchars($name);
                }
                $localLabel = '  -  [' . htmlspecialchars($defaultName) . ']';
                $available = is_dir(PATH_typo3conf . 'l10n/' . $locale) ? TRUE : FALSE;
                if ($available) {
                    $languageOptions[$defaultName] = '<option value="' . $locale . '"' . ($GLOBALS['BE_USER']->uc['lang'] === $locale ? ' selected="selected"' : '') . '>' . $localizedName . $localLabel . '</option>';
                }
            }
        }
        ksort($languageOptions);
        $languageCode = '
                <select ' . $GLOBALS['TBE_TEMPLATE']->formWidth(20) . ' id="field_lang" name="data[lang]" class="select">' . implode('', $languageOptions) . '
                </select>';
        if ($GLOBALS['BE_USER']->uc['lang'] && !@is_dir((PATH_typo3conf . 'l10n/' . $GLOBALS['BE_USER']->uc['lang']))) {
            $languageUnavailableWarning = 'The selected language "' . $GLOBALS['LANG']->getLL(('lang_' . $GLOBALS['BE_USER']->uc['lang']), TRUE) . '" is not available before the language files are installed.<br />' . ($GLOBALS['BE_USER']->isAdmin() ? 'You can use the Language module to easily download new language files.' : 'Please ask your system administrator to do this.');
            $languageUnavailableMessage = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Messaging\\FlashMessage', $languageUnavailableWarning, '', \TYPO3\CMS\Core\Messaging\FlashMessage::WARNING);
            $languageCode = $languageUnavailableMessage->render() . $languageCode;
        }
        return $languageCode;
    }

    public function renderStartModuleSelect($params, $pObj) {
        // Start module select
        if (empty($GLOBALS['BE_USER']->uc['startModule'])) {
            $GLOBALS['BE_USER']->uc['startModule'] = $GLOBALS['BE_USER']->uc_default['startModule'];
        }
        $startModuleSelect = '<option value=""></option>';
        foreach ($pObj->loadModules->modules as $mainMod => $modData) {
            if (isset($modData['sub']) && is_array($modData['sub'])) {
                $startModuleSelect .= '<option disabled="disabled">' . $GLOBALS['LANG']->moduleLabels['tabs'][($mainMod . '_tab')] . '</option>';
                foreach ($modData['sub'] as $subKey => $subData) {
                    $modName = $subData['name'];
                    $startModuleSelect .= '<option value="' . $modName . '"' . ($GLOBALS['BE_USER']->uc['startModule'] == $modName ? ' selected="selected"' : '') . '>';
                    $startModuleSelect .= ' - ' . $GLOBALS['LANG']->moduleLabels['tabs'][($modName . '_tab')] . '</option>';
                }
            }
        }
        return '<select ' . $GLOBALS['TBE_TEMPLATE']->formWidth(20) . 'id="field_startModule" name="data[startModule]" class="select">' . $startModuleSelect . '</select>';
    }

    public function simulateUser() {
        // If admin, allow simulation of another user
        $this->simUser = 0;
        $this->simulateSelector = '';
        unset($this->OLD_BE_USER);
        if ($GLOBALS['BE_USER']->isAdmin()) {
            $this->simUser = (int)GeneralUtility::_GP('simUser');
            // Make user-selector:
            $users = BackendUtility::getUserNames('username,usergroup,usergroup_cached_list,uid,realName', BackendUtility::BEenableFields('be_users'));
            $opt = array();
            foreach ($users as $rr) {
                if ($rr['uid'] != $GLOBALS['BE_USER']->user['uid']) {
                    $opt[] = '<option value="' . $rr['uid'] . '"' . ($this->simUser == $rr['uid'] ? ' selected="selected"' : '') . '>' . htmlspecialchars(($rr['username'] . ' (' . $rr['realName'] . ')')) . '</option>';
                }
            }
            if (count($opt)) {
                $this->simulateSelector = '<select ' . $GLOBALS['TBE_TEMPLATE']->formWidth(20) . ' id="field_simulate" name="simulateUser" onchange="' . htmlspecialchars('window.location.href=\'' . BackendUtility::getModuleUrl('user_setup') . '&simUser=\'+this.options[this.selectedIndex].value;') . '"><option></option>' . implode('', $opt) . '</select>';
            }
        }
        // This can only be set if the previous code was executed.
        if ($this->simUser > 0) {
            // Save old user...
            $this->OLD_BE_USER = $GLOBALS['BE_USER'];
            unset($GLOBALS['BE_USER']);
            // Unset current
            // New backend user object
            $BE_USER = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Authentication\\BackendUserAuthentication');
            $BE_USER->OS = TYPO3_OS;
            $BE_USER->setBeUserByUid($this->simUser);
            $BE_USER->fetchGroupData();
            $BE_USER->backendSetUC();
            // Must do this, because unsetting $BE_USER before apparently unsets the reference to the global variable by this name!
            $GLOBALS['BE_USER'] = $BE_USER;
        }
    }

    public function renderSimulateUserSelect($params, $pObj) {
        return $pObj->simulateSelector;
    }

    protected function checkAccess(array $config) {
        $access = $config['access'];
        // Check for hook
        $accessObject = GeneralUtility::getUserObj($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['setup']['accessLevelCheck'][$access] . ':&' . $access);
        if (is_object($accessObject) && method_exists($accessObject, 'accessLevelCheck')) {
            // Initialize vars. If method fails, $set will be set to FALSE
            return $accessObject->accessLevelCheck($config);
        } elseif ($access == 'admin') {
            return $this->isAdmin;
        }
    }

    protected function getLabel($str, $key = '', $addLabelTag = TRUE, $altLabelTagId = '') {
        if (substr($str, 0, 4) == 'LLL:') {
            $out = $GLOBALS['LANG']->sL($str);
        } else {
            $out = htmlspecialchars($str);
        }
        if (isset($this->overrideConf[$key ?: $str])) {
            $out = '<span style="color:#999999">' . $out . '</span>';
        }
        if ($addLabelTag) {
            $out = '<label for="' . ($altLabelTagId ?: 'field_' . $key) . '">' . $out . '</label>';
        }
        return $out;
    }

    protected function getCSH($str, $label) {
        $context = '_MOD_user_setup';
        $field = $str;
        $strParts = explode(':', $str);
        if (count($strParts) > 1) {
            // Setting comes from another extension
            $context = $strParts[0];
            $field = $strParts[1];
        } elseif (!GeneralUtility::inList('language,simuser,reset', $str)) {
            $field = 'option_' . $str;
        }
        return BackendUtility::wrapInHelp($context, $field, $label);
    }

    protected function getFieldsFromShowItem() {
        $fieldList = $GLOBALS['TYPO3_USER_SETTINGS']['showitem'];
        // Disable fields depended on settings
        if (!$GLOBALS['TYPO3_CONF_VARS']['BE']['RTEenabled']) {
            $fieldList = GeneralUtility::rmFromList('edit_RTE', $fieldList);
        }
        $fieldArray = GeneralUtility::trimExplode(',', $fieldList, TRUE);
        return $fieldArray;
    }

}