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708 lines
22 KiB
PHP
708 lines
22 KiB
PHP
<?php
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/**
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* Folders Access Control Lists Management (RFC4314, RFC2086)
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*
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* @version @package_version@
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* @author Aleksander Machniak <alec@alec.pl>
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*
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*
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* Copyright (C) 2011-2012, Kolab Systems AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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class acl extends rcube_plugin
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{
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public $task = 'settings|addressbook|calendar';
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private $rc;
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private $supported = null;
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private $mbox;
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private $ldap;
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private $specials = array('anyone', 'anonymous');
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/**
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* Plugin initialization
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*/
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function init()
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{
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$this->rc = rcmail::get_instance();
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// Register hooks
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$this->add_hook('folder_form', array($this, 'folder_form'));
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// kolab_addressbook plugin
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$this->add_hook('addressbook_form', array($this, 'folder_form'));
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$this->add_hook('calendar_form_kolab', array($this, 'folder_form'));
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// Plugin actions
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$this->register_action('plugin.acl', array($this, 'acl_actions'));
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$this->register_action('plugin.acl-autocomplete', array($this, 'acl_autocomplete'));
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}
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/**
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* Handler for plugin actions (AJAX)
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*/
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function acl_actions()
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{
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$action = trim(get_input_value('_act', RCUBE_INPUT_GPC));
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// Connect to IMAP
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$this->rc->storage_init();
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// Load localization and configuration
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$this->add_texts('localization/');
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$this->load_config();
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if ($action == 'save') {
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$this->action_save();
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}
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else if ($action == 'delete') {
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$this->action_delete();
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}
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else if ($action == 'list') {
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$this->action_list();
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}
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// Only AJAX actions
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$this->rc->output->send();
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}
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/**
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* Handler for user login autocomplete request
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*/
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function acl_autocomplete()
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{
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$this->load_config();
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$search = get_input_value('_search', RCUBE_INPUT_GPC, true);
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$sid = get_input_value('_id', RCUBE_INPUT_GPC);
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$users = array();
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if ($this->init_ldap()) {
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$max = (int) $this->rc->config->get('autocomplete_max', 15);
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$mode = (int) $this->rc->config->get('addressbook_search_mode');
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$this->ldap->set_pagesize($max);
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$result = $this->ldap->search('*', $search, $mode);
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foreach ($result->records as $record) {
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$user = $record['uid'];
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if (is_array($user)) {
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$user = array_filter($user);
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$user = $user[0];
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}
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if ($user) {
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if ($record['name'])
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$user = $record['name'] . ' (' . $user . ')';
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$users[] = $user;
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}
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}
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}
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sort($users, SORT_LOCALE_STRING);
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$this->rc->output->command('ksearch_query_results', $users, $search, $sid);
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$this->rc->output->send();
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}
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/**
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* Handler for 'folder_form' hook
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*
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* @param array $args Hook arguments array (form data)
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*
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* @return array Hook arguments array
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*/
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function folder_form($args)
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{
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$mbox_imap = $args['options']['name'];
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$myrights = $args['options']['rights'];
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// Edited folder name (empty in create-folder mode)
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if (!strlen($mbox_imap)) {
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return $args;
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}
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/*
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// Do nothing on protected folders (?)
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if ($args['options']['protected']) {
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return $args;
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}
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*/
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// Get MYRIGHTS
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if (empty($myrights)) {
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return $args;
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}
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// Load localization and include scripts
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$this->load_config();
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$this->add_texts('localization/', array('deleteconfirm', 'norights',
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'nouser', 'deleting', 'saving'));
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$this->include_script('acl.js');
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$this->rc->output->include_script('list.js');
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$this->include_stylesheet($this->local_skin_path().'/acl.css');
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// add Info fieldset if it doesn't exist
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if (!isset($args['form']['props']['fieldsets']['info']))
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$args['form']['props']['fieldsets']['info'] = array(
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'name' => rcube_label('info'),
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'content' => array());
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// Display folder rights to 'Info' fieldset
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$args['form']['props']['fieldsets']['info']['content']['myrights'] = array(
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'label' => Q($this->gettext('myrights')),
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'value' => $this->acl2text($myrights)
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);
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// Return if not folder admin
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if (!in_array('a', $myrights)) {
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return $args;
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}
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// The 'Sharing' tab
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$this->mbox = $mbox_imap;
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$this->rc->output->set_env('acl_users_source', (bool) $this->rc->config->get('acl_users_source'));
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$this->rc->output->set_env('mailbox', $mbox_imap);
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$this->rc->output->add_handlers(array(
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'acltable' => array($this, 'templ_table'),
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'acluser' => array($this, 'templ_user'),
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'aclrights' => array($this, 'templ_rights'),
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));
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$this->rc->output->set_env('autocomplete_max', (int)$this->rc->config->get('autocomplete_max', 15));
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$this->rc->output->set_env('autocomplete_min_length', $this->rc->config->get('autocomplete_min_length'));
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$this->rc->output->add_label('autocompletechars', 'autocompletemore');
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$args['form']['sharing'] = array(
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'name' => Q($this->gettext('sharing')),
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'content' => $this->rc->output->parse('acl.table', false, false),
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);
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return $args;
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}
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/**
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* Creates ACL rights table
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*
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* @param array $attrib Template object attributes
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*
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* @return string HTML Content
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*/
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function templ_table($attrib)
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{
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if (empty($attrib['id']))
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$attrib['id'] = 'acl-table';
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$out = $this->list_rights($attrib);
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$this->rc->output->add_gui_object('acltable', $attrib['id']);
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return $out;
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}
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/**
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* Creates ACL rights form (rights list part)
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*
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* @param array $attrib Template object attributes
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*
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* @return string HTML Content
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*/
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function templ_rights($attrib)
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{
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// Get supported rights
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$supported = $this->rights_supported();
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// depending on server capability either use 'te' or 'd' for deleting msgs
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$deleteright = implode(array_intersect(str_split('ted'), $supported));
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$out = '';
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$ul = '';
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$input = new html_checkbox();
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// Advanced rights
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$attrib['id'] = 'advancedrights';
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foreach ($supported as $val) {
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$id = "acl$val";
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$ul .= html::tag('li', null,
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$input->show('', array(
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'name' => "acl[$val]", 'value' => $val, 'id' => $id))
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. html::label(array('for' => $id, 'title' => $this->gettext('longacl'.$val)),
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$this->gettext('acl'.$val)));
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}
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$out = html::tag('ul', $attrib, $ul, html::$common_attrib);
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// Simple rights
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$ul = '';
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$attrib['id'] = 'simplerights';
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$items = array(
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'read' => 'lrs',
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'write' => 'wi',
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'delete' => $deleteright,
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'other' => preg_replace('/[lrswi'.$deleteright.']/', '', implode($supported)),
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);
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foreach ($items as $key => $val) {
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$id = "acl$key";
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$ul .= html::tag('li', null,
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$input->show('', array(
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'name' => "acl[$val]", 'value' => $val, 'id' => $id))
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. html::label(array('for' => $id, 'title' => $this->gettext('longacl'.$key)),
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$this->gettext('acl'.$key)));
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}
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$out .= "\n" . html::tag('ul', $attrib, $ul, html::$common_attrib);
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$this->rc->output->set_env('acl_items', $items);
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return $out;
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}
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/**
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* Creates ACL rights form (user part)
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*
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* @param array $attrib Template object attributes
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*
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* @return string HTML Content
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*/
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function templ_user($attrib)
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{
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// Create username input
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$attrib['name'] = 'acluser';
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$textfield = new html_inputfield($attrib);
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$fields['user'] = html::label(array('for' => 'iduser'), $this->gettext('username'))
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. ' ' . $textfield->show();
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// Add special entries
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if (!empty($this->specials)) {
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foreach ($this->specials as $key) {
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$fields[$key] = html::label(array('for' => 'id'.$key), $this->gettext($key));
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}
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}
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$this->rc->output->set_env('acl_specials', $this->specials);
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// Create list with radio buttons
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if (count($fields) > 1) {
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$ul = '';
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$radio = new html_radiobutton(array('name' => 'usertype'));
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foreach ($fields as $key => $val) {
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$ul .= html::tag('li', null, $radio->show($key == 'user' ? 'user' : '',
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array('value' => $key, 'id' => 'id'.$key))
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. $val);
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}
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$out = html::tag('ul', array('id' => 'usertype'), $ul, html::$common_attrib);
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}
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// Display text input alone
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else {
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$out = $fields['user'];
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}
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return $out;
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}
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/**
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* Creates ACL rights table
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*
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* @param array $attrib Template object attributes
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*
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* @return string HTML Content
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*/
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private function list_rights($attrib=array())
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{
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// Get ACL for the folder
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$acl = $this->rc->storage->get_acl($this->mbox);
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if (!is_array($acl)) {
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$acl = array();
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}
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// Keep special entries (anyone/anonymous) on top of the list
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if (!empty($this->specials) && !empty($acl)) {
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foreach ($this->specials as $key) {
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if (isset($acl[$key])) {
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$acl_special[$key] = $acl[$key];
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unset($acl[$key]);
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}
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}
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}
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// Sort the list by username
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uksort($acl, 'strnatcasecmp');
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if (!empty($acl_special)) {
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$acl = array_merge($acl_special, $acl);
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}
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// Get supported rights and build column names
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$supported = $this->rights_supported();
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// depending on server capability either use 'te' or 'd' for deleting msgs
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$deleteright = implode(array_intersect(str_split('ted'), $supported));
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// Use advanced or simple (grouped) rights
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$advanced = $this->rc->config->get('acl_advanced_mode');
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if ($advanced) {
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$items = array();
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foreach ($supported as $sup) {
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$items[$sup] = $sup;
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}
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}
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else {
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$items = array(
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'read' => 'lrs',
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'write' => 'wi',
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'delete' => $deleteright,
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'other' => preg_replace('/[lrswi'.$deleteright.']/', '', implode($supported)),
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);
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}
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// Create the table
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$attrib['noheader'] = true;
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$table = new html_table($attrib);
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// Create table header
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$table->add_header('user', $this->gettext('identifier'));
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foreach (array_keys($items) as $key) {
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$label = $this->gettext('shortacl'.$key);
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$table->add_header(array('class' => 'acl'.$key, 'title' => $label), $label);
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}
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$i = 1;
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$js_table = array();
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foreach ($acl as $user => $rights) {
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if ($this->rc->storage->conn->user == $user) {
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continue;
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}
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// filter out virtual rights (c or d) the server may return
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$userrights = array_intersect($rights, $supported);
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$userid = html_identifier($user);
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if (!empty($this->specials) && in_array($user, $this->specials)) {
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$user = $this->gettext($user);
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}
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$table->add_row(array('id' => 'rcmrow'.$userid));
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$table->add('user', Q($user));
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foreach ($items as $key => $right) {
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$in = $this->acl_compare($userrights, $right);
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switch ($in) {
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case 2: $class = 'enabled'; break;
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case 1: $class = 'partial'; break;
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default: $class = 'disabled'; break;
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}
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$table->add('acl' . $key . ' ' . $class, '');
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}
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$js_table[$userid] = implode($userrights);
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}
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$this->rc->output->set_env('acl', $js_table);
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$this->rc->output->set_env('acl_advanced', $advanced);
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$out = $table->show();
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return $out;
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}
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/**
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* Handler for ACL update/create action
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*/
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private function action_save()
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{
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$mbox = trim(get_input_value('_mbox', RCUBE_INPUT_GPC, true)); // UTF7-IMAP
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$user = trim(get_input_value('_user', RCUBE_INPUT_GPC));
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$acl = trim(get_input_value('_acl', RCUBE_INPUT_GPC));
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$oldid = trim(get_input_value('_old', RCUBE_INPUT_GPC));
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$acl = array_intersect(str_split($acl), $this->rights_supported());
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$users = $oldid ? array($user) : explode(',', $user);
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foreach ($users as $user) {
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$user = trim($user);
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if (!empty($this->specials) && in_array($user, $this->specials)) {
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$username = $this->gettext($user);
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}
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else {
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if (!strpos($user, '@') && ($realm = $this->get_realm())) {
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$user .= '@' . rcube_idn_to_ascii(preg_replace('/^@/', '', $realm));
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}
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$username = $user;
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}
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if (!$acl || !$user || !strlen($mbox)) {
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continue;
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}
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if ($user != $_SESSION['username'] && $username != $_SESSION['username']) {
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if ($this->rc->storage->set_acl($mbox, $user, $acl)) {
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$ret = array('id' => html_identifier($user),
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'username' => $username, 'acl' => implode($acl), 'old' => $oldid);
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$this->rc->output->command('acl_update', $ret);
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$result++;
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}
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}
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}
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if ($result) {
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$this->rc->output->show_message($oldid ? 'acl.updatesuccess' : 'acl.createsuccess', 'confirmation');
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}
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else {
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$this->rc->output->show_message($oldid ? 'acl.updateerror' : 'acl.createerror', 'error');
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}
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}
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/**
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* Handler for ACL delete action
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*/
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private function action_delete()
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{
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$mbox = trim(get_input_value('_mbox', RCUBE_INPUT_GPC, true)); //UTF7-IMAP
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$user = trim(get_input_value('_user', RCUBE_INPUT_GPC));
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$user = explode(',', $user);
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foreach ($user as $u) {
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$u = trim($u);
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if ($this->rc->storage->delete_acl($mbox, $u)) {
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$this->rc->output->command('acl_remove_row', html_identifier($u));
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}
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else {
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$error = true;
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}
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}
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if (!$error) {
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$this->rc->output->show_message('acl.deletesuccess', 'confirmation');
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}
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else {
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$this->rc->output->show_message('acl.deleteerror', 'error');
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}
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}
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/**
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* Handler for ACL list update action (with display mode change)
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*/
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private function action_list()
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{
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if (in_array('acl_advanced_mode', (array)$this->rc->config->get('dont_override'))) {
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return;
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}
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$this->mbox = trim(get_input_value('_mbox', RCUBE_INPUT_GPC, true)); // UTF7-IMAP
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$advanced = trim(get_input_value('_mode', RCUBE_INPUT_GPC));
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$advanced = $advanced == 'advanced' ? true : false;
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// Save state in user preferences
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$this->rc->user->save_prefs(array('acl_advanced_mode' => $advanced));
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$out = $this->list_rights();
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$out = preg_replace(array('/^<table[^>]+>/', '/<\/table>$/'), '', $out);
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$this->rc->output->command('acl_list_update', $out);
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}
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/**
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* Creates <UL> list with descriptive access rights
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*
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* @param array $rights MYRIGHTS result
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*
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* @return string HTML content
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*/
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function acl2text($rights)
|
|
{
|
|
if (empty($rights)) {
|
|
return '';
|
|
}
|
|
|
|
$supported = $this->rights_supported();
|
|
$list = array();
|
|
$attrib = array(
|
|
'name' => 'rcmyrights',
|
|
'style' => 'margin:0; padding:0 15px;',
|
|
);
|
|
|
|
foreach ($supported as $right) {
|
|
if (in_array($right, $rights)) {
|
|
$list[] = html::tag('li', null, Q($this->gettext('acl' . $right)));
|
|
}
|
|
}
|
|
|
|
if (count($list) == count($supported))
|
|
return Q($this->gettext('aclfull'));
|
|
|
|
return html::tag('ul', $attrib, implode("\n", $list));
|
|
}
|
|
|
|
/**
|
|
* Compares two ACLs (according to supported rights)
|
|
*
|
|
* @param array $acl1 ACL rights array (or string)
|
|
* @param array $acl2 ACL rights array (or string)
|
|
*
|
|
* @param int Comparision result, 2 - full match, 1 - partial match, 0 - no match
|
|
*/
|
|
function acl_compare($acl1, $acl2)
|
|
{
|
|
if (!is_array($acl1)) $acl1 = str_split($acl1);
|
|
if (!is_array($acl2)) $acl2 = str_split($acl2);
|
|
|
|
$rights = $this->rights_supported();
|
|
|
|
$acl1 = array_intersect($acl1, $rights);
|
|
$acl2 = array_intersect($acl2, $rights);
|
|
$res = array_intersect($acl1, $acl2);
|
|
|
|
$cnt1 = count($res);
|
|
$cnt2 = count($acl2);
|
|
|
|
if ($cnt1 == $cnt2)
|
|
return 2;
|
|
else if ($cnt1)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get list of supported access rights (according to RIGHTS capability)
|
|
*
|
|
* @return array List of supported access rights abbreviations
|
|
*/
|
|
function rights_supported()
|
|
{
|
|
if ($this->supported !== null) {
|
|
return $this->supported;
|
|
}
|
|
|
|
$capa = $this->rc->storage->get_capability('RIGHTS');
|
|
|
|
if (is_array($capa)) {
|
|
$rights = strtolower($capa[0]);
|
|
}
|
|
else {
|
|
$rights = 'cd';
|
|
}
|
|
|
|
return $this->supported = str_split('lrswi' . $rights . 'pa');
|
|
}
|
|
|
|
/**
|
|
* Username realm detection.
|
|
*
|
|
* @return string Username realm (domain)
|
|
*/
|
|
private function get_realm()
|
|
{
|
|
// When user enters a username without domain part, realm
|
|
// allows to add it to the username (and display correct username in the table)
|
|
|
|
if (isset($_SESSION['acl_username_realm'])) {
|
|
return $_SESSION['acl_username_realm'];
|
|
}
|
|
|
|
// find realm in username of logged user (?)
|
|
list($name, $domain) = explode('@', $_SESSION['username']);
|
|
|
|
// Use (always existent) ACL entry on the INBOX for the user to determine
|
|
// whether or not the user ID in ACL entries need to be qualified and how
|
|
// they would need to be qualified.
|
|
if (empty($domain)) {
|
|
$acl = $this->rc->storage->get_acl('INBOX');
|
|
if (is_array($acl)) {
|
|
$regexp = '/^' . preg_quote($_SESSION['username'], '/') . '@(.*)$/';
|
|
foreach (array_keys($acl) as $name) {
|
|
if (preg_match($regexp, $name, $matches)) {
|
|
$domain = $matches[1];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $_SESSION['acl_username_realm'] = $domain;
|
|
}
|
|
|
|
/**
|
|
* Initializes autocomplete LDAP backend
|
|
*/
|
|
private function init_ldap()
|
|
{
|
|
if ($this->ldap)
|
|
return $this->ldap->ready;
|
|
|
|
// get LDAP config
|
|
$config = $this->rc->config->get('acl_users_source');
|
|
|
|
if (empty($config)) {
|
|
return false;
|
|
}
|
|
|
|
// not an array, use configured ldap_public source
|
|
if (!is_array($config)) {
|
|
$ldap_config = (array) $this->rc->config->get('ldap_public');
|
|
$config = $ldap_config[$config];
|
|
}
|
|
|
|
$uid_field = $this->rc->config->get('acl_users_field', 'mail');
|
|
$filter = $this->rc->config->get('acl_users_filter');
|
|
|
|
if (empty($uid_field) || empty($config)) {
|
|
return false;
|
|
}
|
|
|
|
// get name attribute
|
|
if (!empty($config['fieldmap'])) {
|
|
$name_field = $config['fieldmap']['name'];
|
|
}
|
|
// ... no fieldmap, use the old method
|
|
if (empty($name_field)) {
|
|
$name_field = $config['name_field'];
|
|
}
|
|
|
|
// add UID field to fieldmap, so it will be returned in a record with name
|
|
$config['fieldmap'] = array(
|
|
'name' => $name_field,
|
|
'uid' => $uid_field,
|
|
);
|
|
|
|
// search in UID and name fields
|
|
$config['search_fields'] = array_values($config['fieldmap']);
|
|
$config['required_fields'] = array($uid_field);
|
|
|
|
// set search filter
|
|
if ($filter)
|
|
$config['filter'] = $filter;
|
|
|
|
// disable vlv
|
|
$config['vlv'] = false;
|
|
|
|
// Initialize LDAP connection
|
|
$this->ldap = new rcube_ldap($config,
|
|
$this->rc->config->get('ldap_debug'),
|
|
$this->rc->config->mail_domain($_SESSION['imap_host']));
|
|
|
|
return $this->ldap->ready;
|
|
}
|
|
}
|