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diff --git a/lib/kolab_client_task.php b/lib/kolab_client_task.php
index 9e1f8a2..a9a38e6 100644
--- a/lib/kolab_client_task.php
+++ b/lib/kolab_client_task.php
@@ -1,998 +1,1053 @@
<?php
/*
+--------------------------------------------------------------------------+
| This file is part of the Kolab Web Admin Panel |
| |
| Copyright (C) 2011-2012, Kolab Systems AG |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU Affero General Public License as published |
| by the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/> |
+--------------------------------------------------------------------------+
| Author: Aleksander Machniak <machniak@kolabsys.com> |
| Author: Jeroen van Meeuwen <vanmeeuwen@kolabsys.com> |
+--------------------------------------------------------------------------+
*/
class kolab_client_task
{
/**
* @var kolab_client_output
*/
protected $output;
/**
* @var kolab_client_api
*/
protected $api;
/**
* @var Conf
*/
protected $config;
protected $ajax_only = false;
protected $page_title = 'Kolab Admin Panel';
protected $menu = array();
protected $cache = array();
protected static $translation = array();
/**
* Class constructor.
*/
public function __construct()
{
$this->config_init();
$this->output_init();
$this->api_init();
ini_set('session.use_cookies', 'On');
session_start();
$this->auth();
}
/**
* Localization initialization.
*/
private function locale_init()
{
$language = $this->get_language();
$LANG = array();
if (!$language) {
$language = 'en_US';
}
@include INSTALL_PATH . '/locale/en_US.php';
if ($language != 'en_US') {
@include INSTALL_PATH . "/locale/$language.php";
}
setlocale(LC_ALL, $language . '.utf8', 'en_US.utf8');
self::$translation = $LANG;
}
/**
* Configuration initialization.
*/
private function config_init()
{
$this->config = Conf::get_instance();
}
/**
* Output initialization.
*/
private function output_init()
{
$skin = $this->config_get('skin', 'default');
$this->output = new kolab_client_output($skin);
}
/**
* API initialization
*/
private function api_init()
{
$url = $this->config_get('api_url', '');
// TODO: Debug logging
//console($url);
if (!$url) {
$url = kolab_utils::https_check() ? 'https://' : 'http://';
$url .= $_SERVER['SERVER_NAME'];
$url .= preg_replace('/\/?\?.*$/', '', $_SERVER['REQUEST_URI']);
$url .= '/api';
}
// TODO: Debug logging
//console($url);
$this->api = new kolab_client_api($url);
}
/**
* Returns system language (locale) setting.
*
* @return string Language code
*/
private function get_language()
{
$aliases = array(
'de' => 'de_DE',
'en' => 'en_US',
'pl' => 'pl_PL',
);
// UI language
$langs = !empty($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : '';
$langs = explode(',', $langs);
if (!empty($_SESSION['user']) && !empty($_SESSION['user']['language'])) {
array_unshift($langs, $_SESSION['user']['language']);
}
while ($lang = array_shift($langs)) {
$lang = explode(';', $lang);
$lang = $lang[0];
$lang = str_replace('-', '_', $lang);
if (file_exists(INSTALL_PATH . "/locale/$lang.php")) {
return $lang;
}
if (isset($aliases[$lang]) && ($alias = $aliases[$lang])
&& file_exists(INSTALL_PATH . "/locale/$alias.php")
) {
return $alias;
}
}
return null;
}
/**
* User authentication (and authorization).
*/
private function auth()
{
if (isset($_POST['login'])) {
$login = $this->get_input('login', 'POST');
if ($login['username']) {
$result = $this->api->login($login['username'], $login['password']);
//console($result);
if ($token = $result->get('session_token')) {
$user = array('token' => $token, 'domain' => $result->get('domain'));
$this->api->set_session_token($user['token']);
// find user settings
$res = $this->api->get('user.info', array('user' => $login['username']));
$res = $res->get();
if (is_array($res) && !empty($res)) {
$user['language'] = $res['preferredlanguage'];
$user['fullname'] = $res['cn'];
}
// @TODO: why user.info returns empty result for 'cn=Directory Manager' login?
else if (preg_match('/^cn=([a-zA-Z ]+)/', $login['username'], $m)) {
$user['fullname'] = ucwords($m[1]);
}
// Save user data
$_SESSION['user'] = $user;
if (($language = $this->get_language()) && $language != 'en_US') {
$_SESSION['user']['language'] = $language;
$session_config['language'] = $language;
}
// Configure API session
if (!empty($session_config)) {
$this->api->post('system.configure', null, $session_config);
}
header('Location: ?');
die;
}
else {
$code = $result->get_error_code();
$str = $result->get_error_str();
$label = 'loginerror';
if ($code == kolab_client_api::ERROR_INTERNAL
|| $code == kolab_client_api::ERROR_CONNECTION
) {
$label = 'internalerror';
$this->raise_error(500, 'Login failed. ' . $str);
}
$this->output->command('display_message', $label, 'error');
}
}
}
else if (!empty($_SESSION['user']) && !empty($_SESSION['user']['token'])) {
$this->api->set_session_token($_SESSION['user']['token']);
return;
}
}
/**
* Main execution.
*/
public function run()
{
// Initialize locales
$this->locale_init();
// Assign self to template variable
$this->output->assign('engine', $this);
// Session check
if (empty($_SESSION['user']) || empty($_SESSION['user']['token'])) {
$this->action_logout();
}
// Run security checks
$this->input_checks();
$action = $this->get_input('action', 'GET');
if ($action) {
$method = 'action_' . $action;
if (method_exists($this, $method)) {
$this->$method();
}
}
else if (method_exists($this, 'action_default')) {
$this->action_default();
}
}
/**
* Security checks and input validation.
*/
public function input_checks()
{
$ajax = $this->output->is_ajax();
// Check AJAX-only tasks
if ($this->ajax_only && !$ajax) {
$this->raise_error(500, 'Invalid request type!', null, true);
}
// CSRF prevention
$token = $ajax ? kolab_utils::get_request_header('X-Session-Token') : $this->get_input('token');
$task = $this->get_task();
if ($task != 'main' && $token != $_SESSION['user']['token']) {
$this->raise_error(403, 'Invalid request data!', null, true);
}
}
/**
* Logout action.
*/
private function action_logout()
{
if (!empty($_SESSION['user']) && !empty($_SESSION['user']['token'])) {
$this->api->logout();
}
$_SESSION = array();
if ($this->output->is_ajax()) {
$this->output->command('main_logout');
}
else {
$this->output->add_translation('loginerror', 'internalerror');
}
$this->output->send('login');
exit;
}
/**
* Error action (with error logging).
*
* @param int $code Error code
* @param string $msg Error message
* @param array $args Optional arguments (type, file, line)
* @param bool $output Enable to send output and finish
*/
public function raise_error($code, $msg, $args = array(), $output = false)
{
$log_line = sprintf("%s Error: %s (%s)",
isset($args['type']) ? $args['type'] : 'PHP',
$msg . (isset($args['file']) ? sprintf(' in %s on line %d', $args['file'], $args['line']) : ''),
$_SERVER['REQUEST_METHOD']);
if (!write_log('errors', $log_line)) {
// send error to PHPs error handler if write_log() didn't succeed
trigger_error($msg, E_USER_ERROR);
}
if (!$output) {
return;
}
if ($this->output->is_ajax()) {
header("HTTP/1.0 $code $msg");
die;
}
$this->output->assign('error_code', $code);
$this->output->assign('error_message', $msg);
$this->output->send('error');
exit;
}
/**
* Output sending.
*/
public function send()
{
$template = $this->get_task();
if ($this->page_title) {
$this->output->assign('pagetitle', $this->page_title);
}
$this->output->send($template);
exit;
}
/**
* Returns name of the current task.
*
* @return string Task name
*/
public function get_task()
{
$class_name = get_class($this);
if (preg_match('/^kolab_client_task_([a-z]+)$/', $class_name, $m)) {
return $m[1];
}
}
/**
* Returns configuration option value.
*
* @param string $name Option name
* @param mixed $fallback Default value
*
* @return mixed Option value
*/
public function config_get($name, $fallback = null)
{
// @TODO: remove this check
if ($name == "devel_mode")
return TRUE;
$value = $this->config->get('kolab_wap', $name);
return $value !== null ? $value : $fallback;
}
/**
* Returns translation of defined label/message.
*
* @return string Translated string.
*/
public static function translate()
{
$args = func_get_args();
if (is_array($args[0])) {
$args = $args[0];
}
$label = $args[0];
if (isset(self::$translation[$label])) {
$content = trim(self::$translation[$label]);
}
else {
$content = $label;
}
for ($i = 1, $len = count($args); $i < $len; $i++) {
$content = str_replace('$'.$i, $args[$i], $content);
}
return $content;
}
/**
* Returns input parameter value.
*
* @param string $name Parameter name
* @param string $type Parameter type (GET|POST|NULL)
* @param bool $allow_html Disables stripping of insecure content (HTML tags)
*
* @see kolab_utils::get_input
* @return mixed Input value.
*/
public static function get_input($name, $type = null, $allow_html = false)
{
if ($type == 'GET') {
$type = kolab_utils::REQUEST_GET;
}
else if ($type == 'POST') {
$type = kolab_utils::REQUEST_POST;
}
else {
$type = kolab_utils::REQUEST_ANY;
}
return kolab_utils::get_input($name, $type, $allow_html);
}
/**
* Returns task menu output.
*
* @return string HTML output
*/
protected function menu()
{
if (empty($this->menu)) {
return '';
}
$task = $this->get_task();
-// @TODO: hide menu items according to capabilities
-// $caps = (array) $this->capabilities();
+
+ $capabilities = $this->capabilities();
foreach ($this->menu as $idx => $label) {
+ console("$task: $task, idx: $idx, label: $label");
+
+ if (in_array($task, array('user', 'group'))) {
+ if (!in_array($task . "." . $idx, $capabilities['actions'])) {
+ continue;
+ }
+ }
+
if (strpos($idx, '.')) {
$action = $idx;
$class = preg_replace('/\.[a-z_-]+$/', '', $idx);
}
else {
$action = $task . '.' . $idx;
$class = $idx;
}
$menu[$idx] = sprintf('<li class="%s">'
.'<a href="#%s" onclick="return kadm.command(\'%s\', \'\', this)">%s</a></li>',
$class, $idx, $action, $this->translate($label));
}
- return '<ul>' . implode("\n", $menu) . '</ul>';
+ if (is_array($menu))
+ return '<ul>' . implode("\n", $menu) . '</ul>';
+ else
+ return '<ul>' . $menu . '</ul>';
}
/**
* Adds watermark page definition into main page.
*/
protected function watermark($name)
{
$this->output->command('set_watermark', $name);
}
/**
* Returns list of user types.
*
* @return array List of user types
*/
protected function user_types()
{
if (isset($_SESSION['user_types'])) {
return $_SESSION['user_types'];
}
$result = $this->api->post('user_types.list');
$list = $result->get('list');
if (is_array($list) && !$this->config_get('devel_mode')) {
$_SESSION['user_types'] = $list;
}
return $list;
}
/**
* Returns user name.
*
* @param string $dn User DN attribute value
*
* @return string User name (displayname)
*/
protected function user_name($dn)
{
if (!empty($this->cache['user_names']) && isset($this->cache['user_names'][$dn])) {
return $this->cache['user_names'][$dn];
}
$result = $this->api->get('user.info', array('user' => $dn));
$username = $result->get('displayname');
if (empty($username)) {
$username = $result->get('cn');
}
if (empty($username)) {
if (preg_match('/^cn=([a-zA=Z ]+)/', $dn, $m)) {
$username = ucwords($m[1]);
}
}
return $this->cache['user_names'][$dn] = $username;
}
/**
* Returns list of system capabilities.
*
* @return array List of system capabilities
*/
protected function capabilities()
{
if (!isset($_SESSION['capabilities'])) {
$result = $this->api->post('system.capabilities');
$list = $result->get('list');
if (is_array($list)) {
$_SESSION['capabilities'] = $list;
}
}
$domain = $_SESSION['user']['domain'];
return $_SESSION['capabilities'][$domain];
}
/**
* Returns system capability
*
* @param string $name Capability (key) name
*
* @return array Capability value if supported, NULL otherwise
*/
protected function get_capability($name)
{
$caps = $this->capabilities();
return $caps[$name];
}
/**
* Returns execution time in seconds
*
* @param string Execution time
*/
public function gentime()
{
return sprintf('%.4f', microtime(true) - KADM_START);
}
/**
* Returns HTML output of login form
*
* @param string HTML output
*/
public function login_form()
{
$post = $this->get_input('login', 'POST');
$username = kolab_html::label(array(
'for' => 'login_name',
'content' => $this->translate('login.username')), true)
. kolab_html::input(array(
'type' => 'text',
'id' => 'login_name',
'name' => 'login[username]',
'value' => $post['username'],
'autofocus' => true));
$password = kolab_html::label(array(
'for' => 'login_pass',
'content' => $this->translate('login.password')), true)
. kolab_html::input(array(
'type' => 'password',
'id' => 'login_pass',
'name' => 'login[password]',
'value' => ''));
$button = kolab_html::input(array(
'type' => 'submit',
'id' => 'login_submit',
'value' => $this->translate('login.login')));
$form = kolab_html::form(array(
'id' => 'login_form',
'name' => 'login',
'method' => 'post',
'action' => '?'),
kolab_html::span(array('content' => $username))
. kolab_html::span(array('content' => $password))
. $button);
return $form;
}
/**
* Returns form element definition based on field attributes
*
* @param array $field Field attributes
* @param array $data Attribute values
*
* @return array Field definition
*/
protected function form_element_type($field, $data = array())
{
$result = array();
switch ($field['type']) {
case 'select':
case 'multiselect':
if (!isset($field['values'])) {
$data['attributes'] = array($field['name']);
$resp = $this->api->post('form_value.select_options', null, $data);
$field['values'] = $resp->get($field['name']);
}
if (!empty($field['values']['default'])) {
$result['value'] = $field['values']['default'];
unset($field['values']['default']);
}
$result['type'] = kolab_form::INPUT_SELECT;
if (!empty($field['values'])) {
$result['options'] = array_combine($field['values'], $field['values']);
}
else {
$result['options'] = array('');
}
if ($field['type'] == 'multiselect') {
$result['multiple'] = true;
}
break;
case 'list':
$result['type'] = kolab_form::INPUT_TEXTAREA;
$result['data-type'] = kolab_form::TYPE_LIST;
if (!empty($field['maxlength'])) {
$result['data-maxlength'] = $field['maxlength'];
}
if (!empty($field['autocomplete'])) {
$result['data-autocomplete'] = true;
}
break;
default:
$result['type'] = kolab_form::INPUT_TEXT;
if (isset($field['maxlength'])) {
$result['maxlength'] = $field['maxlength'];
}
}
$result['required'] = empty($field['optional']);
return $result;
}
/**
* HTML Form elements preparation.
*
* @param string $name Object name (user, group, etc.)
* @param array $data Object data
* @param array $extra_fields Extra field names
*
* @return array Fields list, Object types list, Current type ID
*/
protected function form_prepare($name, &$data, $extra_fields = array())
{
$types = (array) $this->{$name . '_types'}();
$form_id = $attribs['id'];
$add_mode = empty($data['id']);
$event_fields = array();
$auto_fields = array();
$form_fields = array();
$fields = array();
$auto_attribs = array();
$extra_fields = array_flip($extra_fields);
// Selected account type
if (!empty($data['type_id'])) {
$type = $data['type_id'];
}
else {
$data['type_id'] = $type = key($types);
}
if ($type) {
$auto_fields = (array) $types[$type]['attributes']['auto_form_fields'];
$form_fields = (array) $types[$type]['attributes']['form_fields'];
}
// Mark automatically generated fields as read-only, etc.
foreach ($auto_fields as $idx => $field) {
if (!is_array($field)) {
unset($auto_fields[$idx]);
continue;
}
// merge with field definition from
if (isset($form_fields[$idx])) {
$field = array_merge($field, $form_fields[$idx]);
}
// remove auto-generated value on type change, it will be re-generated
else if ($add_mode) {
unset($data[$idx]);
}
$field['name'] = $idx;
$fields[$idx] = $this->form_element_type($field);
$fields[$idx]['readonly'] = true;
$fields[$idx]['disabled'] = true;
$extra_fields[$idx] = true;
// build auto_attribs and event_fields lists
$is_data = 0;
if (!empty($field['data'])) {
foreach ($field['data'] as $fd) {
$event_fields[$fd][] = $idx;
if (isset($data[$fd])) {
$is_data++;
}
}
if (count($field['data']) == $is_data) {
$auto_attribs[] = $idx;
}
}
else {
$auto_attribs[] = $idx;
unset($auto_fields[$idx]);
}
}
// Other fields
foreach ($form_fields as $idx => $field) {
if (!isset($fields[$idx])) {
$field['name'] = $idx;
$fields[$idx] = $this->form_element_type($field);
}
else {
unset($extra_fields[$idx]);
}
// $fields[$idx]['required'] = true;
$fields[$idx]['readonly'] = false;
$fields[$idx]['disabled'] = false;
// Attach on-change events to some fields, to update
// auto-generated field values
if (!empty($event_fields[$idx])) {
$event = json_encode(array_unique($event_fields[$idx]));
$fields[$idx]['onchange'] = "kadm.form_value_change($event)";
}
}
// Register list of auto-generated fields
$this->output->set_env('auto_fields', $auto_fields);
// Register list of disabled fields
$this->output->set_env('extra_fields', array_keys($extra_fields));
// (Re-|Pre-)populate auto_form_fields
if ($add_mode) {
if (!empty($auto_attribs)) {
$data = array_merge((array)$data, array(
'attributes' => $auto_attribs,
'object_type' => $name,
));
$resp = $this->api->post('form_value.generate', null, $data);
$data = array_merge((array)$data, (array)$resp->get());
}
}
else {
// Add common information fields
$add_fields = array(
'creatorsname' => 'createtimestamp',
'modifiersname' => 'modifytimestamp',
);
foreach ($add_fields as $idx => $val) {
if (!empty($data[$idx])) {
if ($value = $this->user_name($data[$idx])) {
if ($data[$val]) {
$value .= ' (' . strftime('%x %X', strtotime($data[$val])) . ')';
}
$fields[$idx] = array(
'label' => $idx,
'section' => 'system',
'value' => $value,
);
}
}
}
// Add debug information
if ($this->config_get('devel_mode')) {
ksort($data);
$debug = kolab_html::escape(print_r($data, true));
$debug = preg_replace('/(^Array\n\(|\n*\)$|\t)/', '', $debug);
$debug = str_replace("\n ", "\n", $debug);
$debug = '<pre class="debug">' . $debug . '</pre>';
$fields['debug'] = array(
'label' => 'debug',
'section' => 'system',
'value' => $debug,
);
}
}
// Add object type hidden field
$fields['object_type'] = array(
'section' => 'system',
'type' => kolab_form::INPUT_HIDDEN,
'value' => $name,
);
// Add entry identifier
if (!$add_mode) {
$fields['id'] = array(
'section' => 'system',
'type' => kolab_form::INPUT_HIDDEN,
'value' => $data['id']
);
$fields['entrydn'] = Array(
'section' => 'system',
'type' => kolab_form::INPUT_HIDDEN,
'value' => $data['entrydn']
);
}
return array($fields, $types, $type);
}
/**
* HTML Form creation.
*
* @param string $name Object name (user, group, etc.)
* @param array $attribs HTML attributes of the form
* @param array $sections List of form sections
* @param array $fields Fields list (from self::form_prepare())
* @param array $fields_map Fields map (used for sorting and sections assignment)
* @param array $data Object data
*
* @return kolab_form HTML Form object
*/
protected function form_create($name, $attribs, $sections, $fields, $fields_map, $data, $add_mode)
{
+ // Get the rights on the entry and attribute level
+ $effective_rights = $this->api->get("user.effective_rights", array($name => $data['id']))->get();
+ //console($effective_rights);
+
// Assign sections to fields
foreach ($fields as $idx => $field) {
if (!$field['section']) {
$fields[$idx]['section'] = isset($fields_map[$idx]) ? $fields_map[$idx] : 'other';
}
}
// Sort
foreach ($fields_map as $idx => $val) {
if (array_key_exists($idx, $fields)) {
$fields_map[$idx] = $fields[$idx];
unset($fields[$idx]);
}
else {
unset($fields_map[$idx]);
}
}
if (!empty($fields)) {
$fields_map = array_merge($fields_map, $fields);
}
$form = new kolab_form($attribs);
$assoc_fields = array();
$req_fields = array();
// Parse elements and add them to the form object
foreach ($sections as $section_idx => $section) {
$form->add_section($section_idx, kolab_html::escape($this->translate($section)));
foreach ($fields_map as $idx => $field) {
if ($field['section'] != $section_idx) {
continue;
}
if (empty($field['label'])) {
$field['label'] = "$name.$idx";
}
$field['label'] = kolab_html::escape($this->translate($field['label']));
$field['description'] = "$name.$idx.desc";
$field['section'] = $section_idx;
if (empty($field['value']) && !empty($data[$idx])) {
$field['value'] = $data[$idx];
// Convert data for the list field with autocompletion
if ($field['data-type'] == kolab_form::TYPE_LIST && kolab_utils::is_assoc($data[$idx])) {
$assoc_fields[$idx] = $data[$idx];
$field['value'] = array_keys($data[$idx]);
}
if (is_array($field['value'])) {
$field['value'] = implode("\n", $field['value']);
}
}
+
/*
if (!empty($field['suffix'])) {
$field['suffix'] = kolab_html::escape($this->translate($field['suffix']));
}
*/
if (!empty($field['options'])) {
foreach ($field['options'] as $opt_idx => $option) {
if (is_array($option)) {
$field['options'][$opt_idx]['content'] = kolab_html::escape($this->translate($option['content']));
}
else {
$field['options'][$opt_idx] = kolab_html::escape($this->translate($option));
}
}
}
if (!empty($field['description'])) {
$description = $this->translate($field['description']);
if ($description != $field['description']) {
$field['title'] = $description;
}
unset($field['description']);
}
if (empty($field['name'])) {
$field['name'] = $idx;
}
+ if (empty($field['disabled'])) {
+ if (!array_key_exists($field['name'], $effective_rights['attributeLevelRights'])) {
+ // If the entry level rights contain 'add' and 'delete', well, you're an admin
+ if (
+ in_array('add', $effective_rights['entryLevelRights']) &&
+ in_array('delete', $effective_rights['entryLevelRights'])
+ ) {
+ $field['disabled'] = false;
+ } else {
+ $field['disabled'] = true;
+ }
+ } else {
+ if (!in_array('write', $effective_rights['attributeLevelRights'][$field['name']])) {
+ //console("no write on " . $field['name']);
+ $field['disabled'] = true;
+ } /* else {
+ console("write on " . $field['name']);
+ } */
+
+ }
+
+ // Some fields are special, such as the 'userpassword2' field
+ switch ($field['name']) {
+ case "userpassword2":
+ if (!array_key_exists('userpassword', $effective_rights['attributeLevelRights'])) {
+ $field['disabled'] = true;
+ } elseif (!in_array('write', $effective_rights['attributeLevelRights']['userpassword'])) {
+ $field['disabled'] = true;
+ } else {
+ $field['disabled'] = false;
+ }
+
+ break;
+ default:
+ break;
+ }
+
+ }
+
if (!empty($field['required']) && empty($field['readonly']) && empty($field['disabled'])) {
$req_fields[] = $idx;
}
$form->add_element($field);
}
}
if (!empty($data['section'])) {
$form->activate_section($data['section']);
}
$form->add_button(array(
'value' => kolab_html::escape($this->translate('submit.button')),
'onclick' => "kadm.{$name}_save()",
));
- if (!empty($data['id'])) {
+ if (!empty($data['id']) && in_array('delete', $effective_rights['entryLevelRights'])) {
$id = $data['id'];
$form->add_button(array(
'value' => kolab_html::escape($this->translate('delete.button')),
'onclick' => "kadm.{$name}_delete('{$id}')",
));
}
$this->output->set_env('form_id', $attribs['id']);
$this->output->set_env('assoc_fields', $assoc_fields);
$this->output->set_env('required_fields', $req_fields);
$this->output->add_translation('form.required.empty');
return $form;
}
}

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