public function getlinkAction()
{
// Parameter auslesen
$link_to_page_id = Request::postParam('linkToPageId');
$link_to_language_id = Request::postParam('linkToLanguageId');
$link_to_anchor_name = Request::postParam('linkToAnchorName');
// Parameter überprüfen
if (!is_numeric($link_to_page_id) || $link_to_language_id == '') {
$this->error(self::RESULT_ERROR_BAD_REQUEST);
return;
}
$pages = new Pages();
// Die absolute URL auslesen
$absolute_url = $pages->getPageUrl($link_to_page_id, $link_to_language_id);
// eine zum Stammverzeichnis des CMS relative URL daraus machen
$base_url = Config::get()->baseUrl;
$relative_url = UTF8String::substr($absolute_url, UTF8String::strlen($base_url), UTF8String::strlen($absolute_url));
if ($link_to_anchor_name != '') {
if ($relative_url != '') {
$relative_url = rtrim($relative_url, '/') . '/';
}
$relative_url .= '#' . $link_to_anchor_name;
}
// Zurückgeben
$this->success($relative_url);
}
/**
* Function: smarty_make_timestamp<br>
* Purpose: used by other smarty functions to make a timestamp from a string.
*
* @author Monte Ohrt <monte at ohrt dot com>
*
* @param DateTime|int|UTF8String $string date object, timestamp or string that can be converted using strtotime()
*
* @return int
*/
function smarty_make_timestamp($string)
{
if (empty($string)) {
// use "now":
return time();
} elseif ($string instanceof DateTime) {
return $string->getTimestamp();
} elseif (strlen($string) == 14 && ctype_digit($string)) {
// it is mysql timestamp format of YYYYMMDDHHMMSS?
return mktime(substr($string, 8, 2), substr($string, 10, 2), substr($string, 12, 2), substr($string, 4, 2), substr($string, 6, 2), substr($string, 0, 4));
} elseif (is_numeric($string)) {
// it is a numeric string, we handle it as timestamp
return (int) $string;
} else {
// strtotime should handle it
$time = strtotime($string);
if ($time == -1 || $time === false) {
// strtotime() was not able to parse $string, use "now":
return time();
}
return $time;
}
}
public function getHtml()
{
$userGroups = $this->userGroups->getAll();
$html = '';
$yes = Translate::get('Yes');
$no = Translate::get('No');
if ($userGroups !== false) {
if (count($userGroups) > 0) {
foreach ($userGroups as $userGroup) {
$modules_text = '';
$modules = $this->userGroups->getAclResources($userGroup['id']);
if ($modules !== false) {
if (count($modules) > 0) {
foreach ($modules as $module_acl_resource_id) {
$module_acl_resource = Acl::getResourceDataById($module_acl_resource_id);
if ($module_acl_resource !== false) {
$modules_text .= ($modules_text != '' ? ', ' : '') . $module_acl_resource['description'];
}
}
}
}
if (UTF8String::strlen($modules_text) > 75) {
$modules_text = UTF8String::substr($modules_text, 0, 75) . '...';
}
$html .= '
<tr data-id="' . $userGroup['id'] . '">
<td><input type="checkbox" name="usergroups[' . $userGroup['id'] . ']" value="1" id="usergroup_' . $userGroup['id'] . '"></td>
<td>' . $userGroup['name'] . '</td>
<td>' . $userGroup['level'] . '</td>
<td>' . ($userGroup['action-create'] > 0 ? $yes : $no) . '</td>
<td>' . ($userGroup['action-edit'] > 0 ? $yes : $no) . '</td>
<td>' . ($userGroup['action-publish'] > 0 ? $yes : $no) . '</td>
<td>' . ($userGroup['action-delete'] > 0 ? $yes : $no) . '</td>
<td>' . $modules_text . '</td>
</tr>
';
}
}
}
return $html;
}
public function getSearchResultForFrontend($search_string, $columns, $page_id, $language_id)
{
if (is_array($columns) && count($columns) == 0) {
$columns = null;
}
if ($columns === null) {
$columns = array();
foreach ($this->fields as $field) {
if (isset($field['dbFieldType'])) {
if ($field['dbFieldType'] == 'string') {
$columns[] = $field['id'];
}
}
}
} else {
$columns = array_map(function ($column_id) {
return trim($column_id);
}, $columns);
$columns = array_filter($columns, function ($string) {
return UTF8String::strlen($string) > 0;
});
}
$sanitized_search_string = UTF8String::strtolower(trim($search_string));
$search_array = array_filter(explode(' ', $sanitized_search_string), function ($string) {
return UTF8String::strlen($string) > 0;
});
$result = array();
if (count($columns) > 0 && count($search_array) > 0) {
$rows = $this->getAllRowsForFrontend($page_id, $language_id);
if ($rows !== false) {
if (count($rows) > 0) {
foreach ($rows as $row) {
$row_contains_search_string = false;
foreach ($columns as $column_id) {
if (isset($row[$column_id])) {
if ($this->doesFieldValueContainSearchString($row[$column_id], $search_array)) {
$row_contains_search_string = true;
break;
}
}
}
if ($row_contains_search_string) {
$result[] = $row;
}
}
}
}
}
return $result;
}
public static function getCompleteUrl($uri, $protocol = null)
{
if ($protocol === null) {
$protocol = Config::get()->standardProtocolForAbsoluteUrls;
}
$url = $uri;
// Nur wenn Protokoll nicht angegeben ist...
if (UTF8String::strpos($url, '://') === false) {
// ggf. Server-Namen erg�nzen
if (UTF8String::substr($url, 0, 1) == '/') {
if ($_SERVER['HTTP_HOST'] !== '') {
$url = self::htmlEntities($_SERVER['HTTP_HOST']) . $url;
} else {
$url = self::htmlEntities($_SERVER['SERVER_NAME']) . $url;
}
}
// Protokoll erg�nzen
$url = $protocol . $url;
}
return $url;
}
private function resizeImage($source, $parameters, $preview = false, $custom_settings = null)
{
// TODO *******
//
// Leider bietet diese drecks GD-Lib keine M�glichkeit, einen "out of memory"-Fehler zu umgehen,
// oder vorauszusehen, wann ein Bild zu gro� f�r den Speicher ist.
//
// Daher sollte hier noch ein Mechanismus geschaffen werden, um voraus zu berechnen, wieviel Speicher
// es brauchen wird, das Bild zu laden und einen Fehlercode zur�ckzugeben, falls der Speicher nicht reicht!
// gew�nschte JPEG-Kompression feststellen
$source_path_info = pathinfo($source);
$source_ext = UTF8String::strtolower($source_path_info['extension']);
if ($source_ext == 'jpg' || $source_ext == 'jpg' || $source_ext == 'jpe') {
if ($this->isParameterPositiveNumber($parameters, 'jpegQuality')) {
$jpeqQuality = $parameters['jpegQuality'];
} else {
$jpeqQuality = Config::get()->jpegQuality;
}
} else {
$jpeqQuality = null;
}
// Erstmal keine Gr��en�nderung annehmen
$mode = 'copy';
// Pr�fen, ob maximal-Werte angegeben sind
$max_width = 0;
$max_height = 0;
if ($this->isParameterPositiveNumber($parameters, 'maxWidth')) {
$max_width = $parameters['maxWidth'];
}
if ($this->isParameterPositiveNumber($parameters, 'maxHeight')) {
$max_height = $parameters['maxHeight'];
}
// Wenn Maximal-Werte gesetzt sind, Einpassung annehmen
if ($max_width > 0 || $max_height > 0) {
$mode = 'fitIn';
}
// Pr�fen, ob genaue Abmessungen gefordert sind
$force_width = 0;
$force_height = 0;
if ($this->isParameterPositiveNumber($parameters, 'forceWidth')) {
$force_width = $parameters['forceWidth'];
}
if ($this->isParameterPositiveNumber($parameters, 'forceHeight')) {
$force_height = $parameters['forceHeight'];
}
// ggf. Benutzereingaben auswerten
if ($custom_settings !== null) {
// der Benutzer hat selbst eine Gr��e festgelegt...
// diese Werte �berschreiben forceWidth und forceHeight
if ($this->sanitizeBoolean($custom_settings['customSize'])) {
if ($this->sanitizeInteger($custom_settings['width']) > 0) {
$force_width = $this->sanitizeInteger($custom_settings['width']);
} else {
$force_width = 0;
}
if ($this->sanitizeInteger($custom_settings['height']) > 0) {
$force_height = $this->sanitizeInteger($custom_settings['height']);
} else {
$force_height = 0;
}
}
// der Benutzer hat einen Ausschnitt festgelegt oder die s/w option gew�hlt...
if ($this->sanitizeBoolean($custom_settings['customCrop']) || $this->sanitizeBoolean($custom_settings['convertToBlackAndWhite'])) {
$tmp_file = APPLICATION_ROOT . 'user-data/tmp/images/' . $this->getRandomFilenameWithTimeStamp($source);
$tmp_image = WideImage::load($source);
if ($this->sanitizeBoolean($custom_settings['customCrop'])) {
$tmp_image = $tmp_image->crop($this->sanitizeInteger($custom_settings['cropX1']), $this->sanitizeInteger($custom_settings['cropY1']), $this->sanitizeInteger($custom_settings['cropX2']) - $this->sanitizeInteger($custom_settings['cropX1']), $this->sanitizeInteger($custom_settings['cropY2']) - $this->sanitizeInteger($custom_settings['cropY1']));
}
if ($this->sanitizeBoolean($custom_settings['convertToBlackAndWhite'])) {
$tmp_image = $tmp_image->asGrayscale();
}
$this->saveImage($tmp_image, $tmp_file, $jpeqQuality);
$tmp_image->destroy();
$source = $tmp_file;
}
}
// Wenn genaue Abmessungen gefordert sind, entsprechenden Modus setzen...
if ($force_width > 0 && $force_height > 0) {
$mode = 'exact';
} elseif ($force_width > 0) {
$mode = 'forceWidth';
} elseif ($force_height > 0) {
$mode = 'forceHeight';
}
// Tempor�ren Dateinamen erstellen
$temp_file_name = $this->getRandomFilenameWithTimeStamp($source);
$relative_path_to_dest_file = 'user-data/tmp/images/' . $temp_file_name;
$absolute_path_to_dest_file = APPLICATION_ROOT . $relative_path_to_dest_file;
// Je nach Modus Bild kopieren / ge�nderte Version speichern
$result = true;
try {
switch ($mode) {
case 'copy':
// keine Gr��en�nderung erfoderlich
$result = FileUtils::copyFile($source, $absolute_path_to_dest_file);
break;
case 'exact':
// Gr��e genau vorgegeben
$image = WideImage::load($source);
$image_dimensions = $this->getDimensions($image);
$resized_image = $image->resize($force_width, $force_height, 'outside', 'any');
$resized_image_dimensions = $this->getDimensions($resized_image);
$image->destroy();
if ($resized_image->getWidth() > $force_width || $resized_image->getHeight() > $force_height) {
$crop_x = 0;
if ($resized_image->getWidth() > $force_width) {
$crop_x = floor(($resized_image->getWidth() - $force_width) / 2);
}
$crop_y = 0;
if ($resized_image->getHeight() > $force_height) {
$crop_y = floor(($resized_image->getHeight() - $force_height) / 2);
}
$cropped_image = $resized_image->crop($crop_x, $crop_y, $force_width, $force_height);
$resized_image->destroy();
$this->saveImage($cropped_image, $absolute_path_to_dest_file, $jpeqQuality);
$cropped_image->destroy();
} else {
if ($this->equalDimensions($image_dimensions, $resized_image_dimensions)) {
FileUtils::copyFile($source, $absolute_path_to_dest_file);
} else {
$this->saveImage($resized_image, $absolute_path_to_dest_file, $jpeqQuality);
}
$resized_image->destroy();
}
break;
case 'forceWidth':
// Breite vorgegeben
$image = WideImage::load($source);
$image_dimensions = $this->getDimensions($image);
$resized_image = $image->resize($force_width, null, 'outside', 'any');
$resized_image_dimensions = $this->getDimensions($resized_image);
$image->destroy();
if ($max_height > 0 && $resized_image->getHeight() > $max_height) {
$crop_y = 0;
if ($resized_image->getHeight() > $max_height) {
$crop_y = floor(($resized_image->getHeight() - $max_height) / 2);
}
$cropped_image = $resized_image->crop(0, $crop_y, $force_width, $max_height);
$resized_image->destroy();
$this->saveImage($cropped_image, $absolute_path_to_dest_file, $jpeqQuality);
$cropped_image->destroy();
} else {
if ($this->equalDimensions($image_dimensions, $resized_image_dimensions)) {
FileUtils::copyFile($source, $absolute_path_to_dest_file);
} else {
$this->saveImage($resized_image, $absolute_path_to_dest_file, $jpeqQuality);
}
$resized_image->destroy();
}
break;
case 'forceHeight':
// H�he vorgegeben
$image = WideImage::load($source);
$image_dimensions = $this->getDimensions($image);
$resized_image = $image->resize(null, $force_height, 'outside', 'any');
$resized_image_dimensions = $this->getDimensions($resized_image);
$image->destroy();
if ($max_width > 0 && $resized_image->getWidth() > $max_width) {
$crop_x = 0;
if ($resized_image->getWidth() > $max_width) {
$crop_x = floor(($resized_image->getWidth() - $max_width) / 2);
}
$cropped_image = $resized_image->crop($crop_x, 0, $max_width, $force_height);
$resized_image->destroy();
$this->saveImage($cropped_image, $absolute_path_to_dest_file, $jpeqQuality);
$cropped_image->destroy();
} else {
if ($this->equalDimensions($image_dimensions, $resized_image_dimensions)) {
FileUtils::copyFile($source, $absolute_path_to_dest_file);
} else {
$this->saveImage($resized_image, $absolute_path_to_dest_file, $jpeqQuality);
}
$resized_image->destroy();
}
break;
case 'fitIn':
// in angegebenes Rechteck einpassen
$image = WideImage::load($source);
$image_dimensions = $this->getDimensions($image);
if ($max_width == 0) {
$max_width = null;
}
if ($max_height == 0) {
$max_height = null;
}
$resized_image = $image->resize($max_width, $max_height, 'inside', 'down');
$resized_image_dimensions = $this->getDimensions($resized_image);
$image->destroy();
if ($this->equalDimensions($image_dimensions, $resized_image_dimensions)) {
FileUtils::copyFile($source, $absolute_path_to_dest_file);
} else {
$this->saveImage($resized_image, $absolute_path_to_dest_file, $jpeqQuality);
}
$resized_image->destroy();
break;
}
} catch (WideImage_Exception $e) {
$result = false;
}
// im Erfolgsfall zum Stammverzeichnis relativen Pfad zur�ckgeben
if ($result) {
// M�glicherweise wird das Bild nochmal von einem geladenen Plugin bearbeitet
$plugin_parameters = array('source' => $source, 'parameters' => $parameters, 'preview' => $preview, 'customSettings' => $custom_settings);
Plugins::call(Plugins::AFTER_IMAGE_RESIZE, $plugin_parameters, $relative_path_to_dest_file);
return $relative_path_to_dest_file;
} else {
return false;
}
}
public function sanitizeBoolean($boolish_string)
{
if (is_bool($boolish_string)) {
return $boolish_string;
} else {
if (is_numeric($boolish_string)) {
$boolish_int = (int) $boolish_string;
if ($boolish_int != 0) {
return true;
} else {
return false;
}
} else {
$boolish_string = trim(UTF8String::strtolower($boolish_string));
if ($boolish_string == 'true') {
return true;
} else {
return false;
}
}
}
}
public function onDataEditorPluginPrepareForOutput($parameters, &$data)
{
if ($parameters['fieldType'] == 'link') {
$edit_data = null;
if (isset($data)) {
if (is_array($data)) {
if (isset($data['url'])) {
if (is_string($data['url'])) {
$edit_data = array('url' => $data['url']);
if (isset($data['newWindow'])) {
$edit_data['newWindow'] = $data['newWindow'];
} else {
$edit_data['newWindow'] = 'auto';
}
$edit_data['type'] = 'external';
$auto_link_target = '';
if (UTF8String::strtolower(UTF8String::substr($data['url'], 0, UTF8String::strlen('link://'))) == 'link://') {
$edit_data['type'] = 'internal';
} elseif (UTF8String::strtolower(UTF8String::substr($data['url'], 0, UTF8String::strlen('download://'))) == 'download://') {
$edit_data['type'] = 'download';
}
switch ($edit_data['type']) {
case 'external':
$edit_data['url'] = $data['url'];
$auto_link_target = '_blank';
break;
case 'internal':
$edit_data['url'] = Config::get()->baseUrl . UTF8String::substr($data['url'], UTF8String::strlen('link://'));
$auto_link_target = '';
break;
case 'download':
$edit_data['url'] = Config::get()->baseUrl . 'user-data/downloads/' . UTF8String::substr($data['url'], UTF8String::strlen('download://'));
$auto_link_target = '_blank';
$edit_data['path'] = APPLICATION_ROOT . 'user-data/downloads/' . urldecode(UTF8String::substr($data['url'], UTF8String::strlen('download://')));
$path_info = pathinfo($edit_data['path']);
$edit_data['basename'] = isset($path_info['basename']) ? $path_info['basename'] : '';
$edit_data['extension'] = isset($path_info['extension']) ? $path_info['extension'] : '';
$edit_data['filename'] = isset($path_info['filename']) ? $path_info['filename'] : '';
if (file_exists($edit_data['path'])) {
$edit_data['filesize'] = @filesize($edit_data['path']);
}
break;
default:
break;
}
switch ($edit_data['newWindow']) {
case 'yes':
$edit_data['target'] = '_blank';
break;
case 'no':
$edit_data['target'] = '';
break;
default:
$edit_data['target'] = $auto_link_target;
break;
}
}
}
}
}
$data = $edit_data;
}
}
$action = 'default';
}
$method = $action . 'Action';
// Datei inkludieren
require_once APPLICATION_ROOT . 'system/core/backend/controllers/' . $folder . '/' . $file;
// Prüfen, ob Klasse existiert
if (!class_exists($class)) {
Helpers::fatalError('Page not found (class "' . $class . '" doesn\'t exist in system/core/backend/controllers/' . $folder . '/' . $file . ')!', true);
}
// Klasse instanziieren
$controller = new $class($module);
// Prüfen, ob Methode existiert
if (!method_exists($controller, $method)) {
Helpers::fatalError('Page not found (class-method "' . $method . '" doesn\'t exist in class "' . $class . '" ist in system/core/backend/controllers/' . $folder . '/' . $file . ')!', true);
}
// View erzeugen und mit Controller verbinden
$view = new View();
$view->assignTemplate(APPLICATION_ROOT . 'system/core/backend/views/' . $folder . '/' . UTF8String::strtolower($file));
$view->assign('baseUrl', Config::get()->baseUrl);
$view->assign('moduleUrl', Config::get()->baseUrl . 'admin/' . $folder . '/' . $module . '/');
$view->assign('publicUrl', Config::get()->baseUrl . 'system/core/backend/public/');
$view->assign('backendLanguage', $language_id);
$controller->assignView($view);
// Action-Methode ausführen
$controller->callActionMethod($action);
// Ausgabe des Views...
if ($controller->getView() != null) {
$controller->getView()->output();
}
}
}
public function extract($path_string, &$data = null)
{
if ($data === null) {
$data = $this->getArray();
}
if (!is_array($data)) {
return null;
}
$path = $this->getPathFromString($path_string);
$pointer =& $data;
$counter = 0;
if (count($path) > 0) {
foreach ($path as $key) {
$index = $key;
if (UTF8String::substr($key, 0, 1) == '[') {
if (UTF8String::substr($key, -1, 1) == ']') {
$number = $this->extendedTrim(UTF8String::substr($key, 1, UTF8String::strlen($key) - 2));
if (is_numeric($number)) {
$index = (int) $number;
}
}
}
if (isset($pointer[$index])) {
$pointer =& $pointer[$index];
if ($counter == count($path) - 1) {
return $pointer;
}
} else {
break;
}
$counter++;
}
}
return null;
}
public static function parse()
{
if (!self::$parsed) {
// Request String speichern
self::$request_uri = $_SERVER['REQUEST_URI'];
// Prüfen, ob HTTPs verwendet wird
self::$request_secure = false;
if (isset($_SERVER['HTTPS'])) {
if ($_SERVER['HTTPS'] != '') {
self::$request_secure = true;
}
}
// Den Teil, der von interesse ist, extrahieren
// Wenn die baseUrl z.B. http://www.pixelproduction.de/cms/ lautet,
// und der entsprechende Request-URI /cms/admin/bla/,
// dann schneiden wir das /cms am Anfang heraus, da uns ja nur das /admin/bla/ interessiert...
// So kann man das CMS in einem beliebigen Unter-Verzeichnis auf dem Server installieren
// und alles funktioniert trotzdem :-)
$base_request_string = self::extractRequestUri(Config::get()->baseUrl);
if (UTF8String::substr(self::$request_uri, 0, UTF8String::strlen($base_request_string)) != $base_request_string) {
die('Fehlerhafter REQUEST_URI oder fehlerhafte Konfiguration. Bitte wenden Sie sich an den Administrator dieser Website.');
} else {
self::$request_uri = UTF8String::substr(self::$request_uri, UTF8String::strlen($base_request_string), UTF8String::strlen(self::$request_uri));
}
// Die URI in ihre bestandteile (Pfad, Parameter, Anker) zerlegen
// Laut PHP Doku muss es eine absolute, vollständige URL sein, ist aber egal, weil wir Protokoll und Server sowieso ignorieren,
// also nehmen wir einfach irgeneinen Server an...
$url = parse_url('http://www.pixelproduction.de/' . self::$request_uri);
// Den Pfad auslesen und in seine Teile zerlegen und in Array ablegen
self::$request_path = array();
if (isset($url['path'])) {
$url_path = trim($url['path'], '/');
if ($url_path != '') {
self::$request_path = explode('/', $url_path);
}
}
// ggf. die GET-Parameter in Array ablegen
self::$request_parameters = array();
if (isset($url['query'])) {
$query = explode('&', $url['query']);
if (is_array($query)) {
foreach ($query as $parameter) {
$key_value_pair = explode('=', $parameter);
if (is_array($key_value_pair)) {
if (isset($key_value_pair[0])) {
self::$request_parameters[$key_value_pair[0]] = '';
if (isset($key_value_pair[1])) {
self::$request_parameters[$key_value_pair[0]] = $key_value_pair[1];
}
}
}
}
}
}
// Herausfinden, ob das Frontend oder das Backend angefordert wird
self::$front_end = true;
if (count(self::$request_path) > 0) {
// Wenn der erste Teil nach der Basis-URL "admin" ist, dann geht's zum Back-End, ansonsten zum Front-End
$firstPathSegment = strtolower(self::$request_path[0]);
self::$front_end = !in_array($firstPathSegment, array('admin', 'pm:api'));
if ($firstPathSegment == 'admin') {
// Das "admin" braucht man nicht als ersten Teil, da man ja dann sowieso weiß, dass man sich im Backend befindet...
array_splice(self::$request_path, 0, 1);
}
if ($firstPathSegment == 'pm:api') {
self::$request_path[0] = 'api';
}
}
self::$parsed = true;
}
}
public function getUniqueName($parent_id, $preferred_name)
{
$preferred_name = $this->normalizeName($preferred_name);
$pos_of_hyphen = UTF8String::strrpos($preferred_name, '-');
if ($pos_of_hyphen !== false) {
if ($pos_of_hyphen > 0) {
$number_part = UTF8String::substr($preferred_name, $pos_of_hyphen + 1);
if (is_numeric($number_part)) {
$preferred_name = UTF8String::substr($preferred_name, 0, $pos_of_hyphen);
}
}
}
if ($this->isValidName($preferred_name)) {
if (!$this->nameExists($parent_id, $preferred_name)) {
return $preferred_name;
} else {
$existing = Db::get('SELECT id, name FROM [prefix]pages WHERE `name` LIKE :pattern', array(':pattern' => $preferred_name . '-%'));
$highest_number = 0;
if ($existing !== false) {
if (count($existing) > 0) {
foreach ($existing as $element) {
$number_part = UTF8String::substr($element['name'], UTF8String::strlen($preferred_name . '-'));
if (is_numeric($number_part)) {
if ((int) $number_part > $highest_number) {
$highest_number = (int) $number_part;
}
}
}
}
}
if ($highest_number < 2) {
$highest_number = 2;
} else {
$highest_number++;
}
if (!$this->nameExists($parent_id, $preferred_name . '-' . $highest_number)) {
return $preferred_name . '-' . $highest_number;
}
}
}
return md5(uniqid(rand(0, 99999), true));
}
private function getRandomFilename($orig_filename)
{
$info = pathinfo($orig_filename);
$ext = UTF8String::strtolower($info['extension']);
return md5(uniqid() . time() . rand(1, 99999)) . '.' . $ext;
}
/**
* Simple function to demonstrate how to control file access using "accessControl" callback.
* This method will disable accessing files/folders starting from '.' (dot)
*
* @param UTF8String $attr attribute name (read|write|locked|hidden)
* @param UTF8String $path file path relative to volume root directory started with directory separator
*
* @return bool|null
**/
function access($attr, $path, $data, $volume)
{
return UTF8String::strpos(basename($path), '.') === 0 ? !($attr == 'read' || $attr == 'write') : null;
// else elFinder decide it itself
}