<?php
/**
* Kolab storage class providing static methods to access groupware objects on a Kolab server.
*
* @version @package_version@
* @author Thomas Bruederli <bruederli@kolabsys.com>
* @author Aleksander Machniak <machniak@kolabsys.com>
*
* Copyright (C) 2012-2014, Kolab Systems AG <contact@kolabsys.com>
*
* 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/>.
*/
class kolab_storage
{
const CTYPE_KEY = '/shared/vendor/kolab/folder-type';
const CTYPE_KEY_PRIVATE = '/private/vendor/kolab/folder-type';
const COLOR_KEY_SHARED = '/shared/vendor/kolab/color';
const COLOR_KEY_PRIVATE = '/private/vendor/kolab/color';
const NAME_KEY_SHARED = '/shared/vendor/kolab/displayname';
const NAME_KEY_PRIVATE = '/private/vendor/kolab/displayname';
const UID_KEY_SHARED = '/shared/vendor/kolab/uniqueid';
const UID_KEY_CYRUS = '/shared/vendor/cmu/cyrus-imapd/uniqueid';
const ERROR_IMAP_CONN = 1;
const ERROR_CACHE_DB = 2;
const ERROR_NO_PERMISSION = 3;
const ERROR_INVALID_FOLDER = 4;
public static $version = '3.0';
public static $last_error;
public static $encode_ids = false;
private static $ready = false;
private static $with_tempsubs = true;
private static $subscriptions;
private static $ldapcache = array();
private static $ldap = array();
private static $states;
private static $config;
private static $imap;
// Default folder names
private static $default_folders = array(
'event' => 'Calendar',
'contact' => 'Contacts',
'task' => 'Tasks',
'note' => 'Notes',
'file' => 'Files',
'configuration' => 'Configuration',
'journal' => 'Journal',
'mail.inbox' => 'INBOX',
'mail.drafts' => 'Drafts',
'mail.sentitems' => 'Sent',
'mail.wastebasket' => 'Trash',
'mail.outbox' => 'Outbox',
'mail.junkemail' => 'Junk',
);
/**
* Setup the environment needed by the libs
*/
public static function setup()
{
if (self::$ready)
return true;
$rcmail = rcube::get_instance();
self::$config = $rcmail->config;
self::$version = strval($rcmail->config->get('kolab_format_version', self::$version));
self::$imap = $rcmail->get_storage();
self::$ready = class_exists('kolabformat') &&
(self::$imap->get_capability('METADATA') || self::$imap->get_capability('ANNOTATEMORE') || self::$imap->get_capability('ANNOTATEMORE2'));
if (self::$ready) {
// do nothing
}
else if (!class_exists('kolabformat')) {
rcube::raise_error(array(
'code' => 900, 'type' => 'php',
'message' => "required kolabformat module not found"
), true);
}
else if (self::$imap->get_error_code()) {
rcube::raise_error(array(
'code' => 900, 'type' => 'php', 'message' => "IMAP error"
), true);
}
// adjust some configurable settings
if ($event_scheduling_prop = $rcmail->config->get('kolab_event_scheduling_properties', null)) {
kolab_format_event::$scheduling_properties = (array)$event_scheduling_prop;
}
// adjust some configurable settings
if ($task_scheduling_prop = $rcmail->config->get('kolab_task_scheduling_properties', null)) {
kolab_format_task::$scheduling_properties = (array)$task_scheduling_prop;
}
return self::$ready;
}
/**
* Initializes LDAP object to resolve Kolab users
*
* @param string $name Name of the configuration option with LDAP config
*/
public static function ldap($name = 'kolab_users_directory')
{
self::setup();
$config = self::$config->get($name);
if (empty($config)) {
$name = 'kolab_auth_addressbook';
$config = self::$config->get($name);
}
if (self::$ldap[$name]) {
return self::$ldap[$name];
}
if (!is_array($config)) {
$ldap_config = (array)self::$config->get('ldap_public');
$config = $ldap_config[$config];
}
if (empty($config)) {
return null;
}
$ldap = new kolab_ldap($config);
// overwrite filter option
if ($filter = self::$config->get('kolab_users_filter')) {
self::$config->set('kolab_auth_filter', $filter);
}
$user_field = $user_attrib = self::$config->get('kolab_users_id_attrib');
// Fallback to kolab_auth_login, which is not attribute, but field name
if (!$user_field && ($user_field = self::$config->get('kolab_auth_login', 'email'))) {
$user_attrib = $config['fieldmap'][$user_field];
}
if ($user_field && $user_attrib) {
$ldap->extend_fieldmap(array($user_field => $user_attrib));
}
self::$ldap[$name] = $ldap;
return $ldap;
}
/**
* Get a list of storage folders for the given data type
*
* @param string Data type to list folders for (contact,distribution-list,event,task,note)
* @param boolean Enable to return subscribed folders only (null to use configured subscription mode)
*
* @return array List of Kolab_Folder objects (folder names in UTF7-IMAP)
*/
public static function get_folders($type, $subscribed = null)
{
$folders = $folderdata = array();
if (self::setup()) {
foreach ((array)self::list_folders('', '*', $type, $subscribed, $folderdata) as $foldername) {
$folders[$foldername] = new kolab_storage_folder($foldername, $type, $folderdata[$foldername]);
}
}
return $folders;
}
/**
* Getter for the storage folder for the given type
*
* @param string Data type to list folders for (contact,distribution-list,event,task,note)
* @return object kolab_storage_folder The folder object
*/
public static function get_default_folder($type)
{
if (self::setup()) {
foreach ((array)self::list_folders('', '*', $type . '.default', false, $folderdata) as $foldername) {
return new kolab_storage_folder($foldername, $type, $folderdata[$foldername]);
}
}
return null;
}
/**
* Getter for a specific storage folder
*
* @param string IMAP folder to access (UTF7-IMAP)
* @param string Expected folder type
*
* @return object kolab_storage_folder The folder object
*/
public static function get_folder($folder, $type = null)
{
return self::setup() ? new kolab_storage_folder($folder, $type) : null;
}
/**
* Getter for a single Kolab object, identified by its UID.
* This will search all folders storing objects of the given type.
*
* @param string Object UID
* @param string Object type (contact,event,task,journal,file,note,configuration)
* @return array The Kolab object represented as hash array or false if not found
*/
public static function get_object($uid, $type)
{
self::setup();
$folder = null;
foreach ((array)self::list_folders('', '*', $type, null, $folderdata) as $foldername) {
if (!$folder)
$folder = new kolab_storage_folder($foldername, $type, $folderdata[$foldername]);
else
$folder->set_folder($foldername, $type, $folderdata[$foldername]);
if ($object = $folder->get_object($uid))
return $object;
}
return false;
}
/**
* Execute cross-folder searches with the given query.
*
* @param array Pseudo-SQL query as list of filter parameter triplets
* @param string Folder type (contact,event,task,journal,file,note,configuration)
* @param int Expected number of records or limit (for performance reasons)
*
* @return array List of Kolab data objects (each represented as hash array)
* @see kolab_storage_format::select()
*/
public static function select($query, $type, $limit = null)
{
self::setup();
$folder = null;
$result = array();
foreach ((array)self::list_folders('', '*', $type, null, $folderdata) as $foldername) {
$folder = new kolab_storage_folder($foldername, $type, $folderdata[$foldername]);
if ($limit) {
$folder->set_order_and_limit(null, $limit);
}
foreach ($folder->select($query) as $object) {
$result[] = $object;
}
}
return $result;
}
/**
* Returns Free-busy server URL
*/
public static function get_freebusy_server()
{
self::setup();
$url = 'https://' . $_SESSION['imap_host'] . '/freebusy';
$url = self::$config->get('kolab_freebusy_server', $url);
$url = rcube_utils::resolve_url($url);
return unslashify($url);
}
/**
* Compose an URL to query the free/busy status for the given user
*
* @param string Email address of the user to get free/busy data for
* @param object DateTime Start of the query range (optional)
* @param object DateTime End of the query range (optional)
*
* @return string Fully qualified URL to query free/busy data
*/
public static function get_freebusy_url($email, $start = null, $end = null)
{
$query = '';
$param = array();
$utc = new \DateTimeZone('UTC');
if ($start instanceof \DateTime) {
$start->setTimezone($utc);
$param['dtstart'] = $start->format('Ymd\THis\Z');
}
if ($end instanceof \DateTime) {
$end->setTimezone($utc);
$param['dtend'] = $end->format('Ymd\THis\Z');
}
if (!empty($param)) {
$query = '?' . http_build_query($param);
}
return self::get_freebusy_server() . '/' . $email . '.ifb' . $query;
}
/**
* Creates folder ID from folder name
*
* @param string $folder Folder name (UTF7-IMAP)
* @param boolean $enc Use lossless encoding
* @return string Folder ID string
*/
public static function folder_id($folder, $enc = null)
{
return $enc == true || ($enc === null && self::$encode_ids) ?
self::id_encode($folder) :
asciiwords(strtr($folder, '/.-', '___'));
}
/**
* Encode the given ID to a safe ascii representation
*
* @param string $id Arbitrary identifier string
*
* @return string Ascii representation
*/
public static function id_encode($id)
{
return rtrim(strtr(base64_encode($id), '+/', '-_'), '=');
}
/**
* Convert the given identifier back to it's raw value
*
* @param string $id Ascii identifier
* @return string Raw identifier string
*/
public static function id_decode($id)
{
return base64_decode(str_pad(strtr($id, '-_', '+/'), strlen($id) % 4, '=', STR_PAD_RIGHT));
}
/**
* Return the (first) path of the requested IMAP namespace
*
* @param string Namespace name (personal, shared, other)
* @return string IMAP root path for that namespace
*/
public static function namespace_root($name)
{
self::setup();
foreach ((array)self::$imap->get_namespace($name) as $paths) {
if (strlen($paths[0]) > 1) {
return $paths[0];
}
}
return '';
}
/**
* Deletes IMAP folder
*
* @param string $name Folder name (UTF7-IMAP)
*
* @return bool True on success, false on failure
*/
public static function folder_delete($name)
{
// clear cached entries first
if ($folder = self::get_folder($name))
$folder->cache->purge();
$rcmail = rcube::get_instance();
$plugin = $rcmail->plugins->exec_hook('folder_delete', array('name' => $name));
$success = self::$imap->delete_folder($name);
self::$last_error = self::$imap->get_error_str();
return $success;
}
/**
* Creates IMAP folder
*
* @param string $name Folder name (UTF7-IMAP)
* @param string $type Folder type
* @param bool $subscribed Sets folder subscription
* @param bool $active Sets folder state (client-side subscription)
*
* @return bool True on success, false on failure
*/
public static function folder_create($name, $type = null, $subscribed = false, $active = false)
{
self::setup();
$rcmail = rcube::get_instance();
$plugin = $rcmail->plugins->exec_hook('folder_create', array('record' => array(
'name' => $name,
'subscribe' => $subscribed,
)));
if ($saved = self::$imap->create_folder($name, $subscribed)) {
// set metadata for folder type
if ($type) {
$saved = self::set_folder_type($name, $type);
// revert if metadata could not be set
if (!$saved) {
self::$imap->delete_folder($name);
}
// activate folder
else if ($active) {
self::set_state($name, true);
}
}
}
if ($saved) {
return true;
}
self::$last_error = self::$imap->get_error_str();
return false;
}
/**
* Renames IMAP folder
*
* @param string $oldname Old folder name (UTF7-IMAP)
* @param string $newname New folder name (UTF7-IMAP)
*
* @return bool True on success, false on failure
*/
public static function folder_rename($oldname, $newname)
{
self::setup();
$rcmail = rcube::get_instance();
$plugin = $rcmail->plugins->exec_hook('folder_rename', array(
'oldname' => $oldname, 'newname' => $newname));
$oldfolder = self::get_folder($oldname);
$active = self::folder_is_active($oldname);
$success = self::$imap->rename_folder($oldname, $newname);
self::$last_error = self::$imap->get_error_str();
// pass active state to new folder name
if ($success && $active) {
self::set_state($oldname, false);
self::set_state($newname, true);
}
// assign existing cache entries to new resource uri
if ($success && $oldfolder) {
$oldfolder->cache->rename($newname);
}
return $success;
}
/**
* Rename or Create a new IMAP folder.
*
* Does additional checks for permissions and folder name restrictions
*
* @param array &$prop Hash array with folder properties and metadata
* - name: Folder name
* - oldname: Old folder name when changed
* - parent: Parent folder to create the new one in
* - type: Folder type to create
* - subscribed: Subscribed flag (IMAP subscription)
* - active: Activation flag (client-side subscription)
*
* @return string|false New folder name or False on failure
*
* @see self::set_folder_props() for list of other properties
*/
public static function folder_update(&$prop)
{
self::setup();
$folder = rcube_charset::convert($prop['name'], RCUBE_CHARSET, 'UTF7-IMAP');
$oldfolder = $prop['oldname']; // UTF7
$parent = $prop['parent']; // UTF7
$delimiter = self::$imap->get_hierarchy_delimiter();
if (strlen($oldfolder)) {
$options = self::$imap->folder_info($oldfolder);
}
if (!empty($options) && ($options['norename'] || $options['protected'])) {
}
// sanity checks (from steps/settings/save_folder.inc)
else if (!strlen($folder)) {
self::$last_error = 'cannotbeempty';
return false;
}
else if (strlen($folder) > 128) {
self::$last_error = 'nametoolong';
return false;
}
else {
// these characters are problematic e.g. when used in LIST/LSUB
foreach (array($delimiter, '%', '*') as $char) {
if (strpos($folder, $char) !== false) {
self::$last_error = 'forbiddencharacter';
return false;
}
}
}
if (!empty($options) && ($options['protected'] || $options['norename'])) {
$folder = $oldfolder;
}
else if (strlen($parent)) {
$folder = $parent . $delimiter . $folder;
}
else {
// add namespace prefix (when needed)
$folder = self::$imap->mod_folder($folder, 'in');
}
// Check access rights to the parent folder
if (strlen($parent) && (!strlen($oldfolder) || $oldfolder != $folder)) {
$parent_opts = self::$imap->folder_info($parent);
if ($parent_opts['namespace'] != 'personal'
&& (empty($parent_opts['rights']) || !preg_match('/[ck]/', implode($parent_opts['rights'])))
) {
self::$last_error = 'No permission to create folder';
return false;
}
}
// update the folder name
if (strlen($oldfolder)) {
if ($oldfolder != $folder) {
$result = self::folder_rename($oldfolder, $folder);
}
else {
$result = true;
}
}
// create new folder
else {
$result = self::folder_create($folder, $prop['type'], $prop['subscribed'], $prop['active']);
}
if ($result) {
self::set_folder_props($folder, $prop);
}
return $result ? $folder : false;
}
/**
* Getter for human-readable name of Kolab object (folder)
* with kolab_custom_display_names support.
* See http://wiki.kolab.org/UI-Concepts/Folder-Listing for reference
*
* @param string $folder IMAP folder name (UTF7-IMAP)
* @param string $folder_ns Will be set to namespace name of the folder
*
* @return string Name of the folder-object
*/
public static function object_name($folder, &$folder_ns=null)
{
// find custom display name in folder METADATA
if ($name = self::custom_displayname($folder)) {
return $name;
}
return self::object_prettyname($folder, $folder_ns);
}
/**
* Get custom display name (saved in metadata) for the given folder
*/
public static function custom_displayname($folder)
{
static $_metadata;
// find custom display name in folder METADATA
if (self::$config->get('kolab_custom_display_names', true) && self::setup()) {
if ($_metadata !== null) {
$metadata = $_metadata;
}
else {
// For performance reasons ask for all folders, it will be cached as one cache entry
$metadata = self::$imap->get_metadata("*", array(self::NAME_KEY_PRIVATE, self::NAME_KEY_SHARED));
// If cache is disabled store result in memory
if (!self::$config->get('imap_cache')) {
$_metadata = $metadata;
}
}
if ($data = $metadata[$folder]) {
if (($name = $data[self::NAME_KEY_PRIVATE]) || ($name = $data[self::NAME_KEY_SHARED])) {
return $name;
}
}
}
return false;
}
/**
* Getter for human-readable name of Kolab object (folder)
* See http://wiki.kolab.org/UI-Concepts/Folder-Listing for reference
*
* @param string $folder IMAP folder name (UTF7-IMAP)
* @param string $folder_ns Will be set to namespace name of the folder
*
* @return string Name of the folder-object
*/
public static function object_prettyname($folder, &$folder_ns=null)
{
self::setup();
$found = false;
$namespace = self::$imap->get_namespace();
if (!empty($namespace['shared'])) {
foreach ($namespace['shared'] as $ns) {
if (strlen($ns[0]) && strpos($folder, $ns[0]) === 0) {
$prefix = '';
$folder = substr($folder, strlen($ns[0]));
$delim = $ns[1];
$found = true;
$folder_ns = 'shared';
break;
}
}
}
if (!$found && !empty($namespace['other'])) {
foreach ($namespace['other'] as $ns) {
if (strlen($ns[0]) && strpos($folder, $ns[0]) === 0) {
// remove namespace prefix and extract username
$folder = substr($folder, strlen($ns[0]));
$delim = $ns[1];
// get username part and map it to user name
$pos = strpos($folder, $delim);
$fid = $pos ? substr($folder, 0, $pos) : $folder;
if ($user = self::folder_id2user($fid, true)) {
$fid = str_replace($delim, '', $user);
}
$prefix = "($fid)";
$folder = $pos ? substr($folder, $pos + 1) : '';
$found = true;
$folder_ns = 'other';
break;
}
}
}
if (!$found && !empty($namespace['personal'])) {
foreach ($namespace['personal'] as $ns) {
if (strlen($ns[0]) && strpos($folder, $ns[0]) === 0) {
// remove namespace prefix
$folder = substr($folder, strlen($ns[0]));
$prefix = '';
$delim = $ns[1];
$found = true;
break;
}
}
}
if (empty($delim))
$delim = self::$imap->get_hierarchy_delimiter();
$folder = rcube_charset::convert($folder, 'UTF7-IMAP');
$folder = html::quote($folder);
$folder = str_replace(html::quote($delim), ' » ', $folder);
if ($prefix)
$folder = html::quote($prefix) . ($folder !== '' ? ' ' . $folder : '');
if (!$folder_ns)
$folder_ns = 'personal';
return $folder;
}
/**
* Helper method to generate a truncated folder name to display.
* Note: $origname is a string returned by self::object_name()
*/
public static function folder_displayname($origname, &$names)
{
$name = $origname;
// find folder prefix to truncate
for ($i = count($names)-1; $i >= 0; $i--) {
if (strpos($name, $names[$i] . ' » ') === 0) {
$length = strlen($names[$i] . ' » ');
$prefix = substr($name, 0, $length);
$count = count(explode(' » ', $prefix));
$diff = 1;
// check if prefix folder is in other users namespace
for ($n = count($names)-1; $n >= 0; $n--) {
if (strpos($prefix, '(' . $names[$n] . ') ') === 0) {
$diff = 0;
break;
}
}
$name = str_repeat(' ', $count - $diff) . '» ' . substr($name, $length);
break;
}
// other users namespace and parent folder exists
else if (strpos($name, '(' . $names[$i] . ') ') === 0) {
$length = strlen('(' . $names[$i] . ') ');
$prefix = substr($name, 0, $length);
$count = count(explode(' » ', $prefix));
$name = str_repeat(' ', $count) . '» ' . substr($name, $length);
break;
}
}
$names[] = $origname;
return $name;
}
/**
* Creates a SELECT field with folders list
*
* @param string $type Folder type
* @param array $attrs SELECT field attributes (e.g. name)
* @param string $current The name of current folder (to skip it)
*
* @return html_select SELECT object
*/
public static function folder_selector($type, $attrs, $current = '')
{
// get all folders of specified type (sorted)
$folders = self::get_folders($type, true);
$delim = self::$imap->get_hierarchy_delimiter();
$names = array();
$len = strlen($current);
if ($len && ($rpos = strrpos($current, $delim))) {
$parent = substr($current, 0, $rpos);
$p_len = strlen($parent);
}
// Filter folders list
foreach ($folders as $c_folder) {
$name = $c_folder->name;
// skip current folder and it's subfolders
if ($len) {
if ($name == $current) {
// Make sure parent folder is listed (might be skipped e.g. if it's namespace root)
if ($p_len && !isset($names[$parent])) {
$names[$parent] = self::object_name($parent);
}
continue;
}
if (strpos($name, $current.$delim) === 0) {
continue;
}
}
// always show the parent of current folder
if ($p_len && $name == $parent) {
}
// skip folders where user have no rights to create subfolders
else if ($c_folder->get_owner() != $_SESSION['username']) {
$rights = $c_folder->get_myrights();
if (!preg_match('/[ck]/', $rights)) {
continue;
}
}
$names[$name] = $c_folder->get_name();
}
// Build SELECT field of parent folder
$attrs['is_escaped'] = true;
$select = new html_select($attrs);
$select->add('---', '');
$listnames = array();
foreach (array_keys($names) as $imap_name) {
$name = $origname = $names[$imap_name];
// find folder prefix to truncate
for ($i = count($listnames)-1; $i >= 0; $i--) {
if (strpos($name, $listnames[$i].' » ') === 0) {
$length = strlen($listnames[$i].' » ');
$prefix = substr($name, 0, $length);
$count = count(explode(' » ', $prefix));
$name = str_repeat(' ', $count-1) . '» ' . substr($name, $length);
break;
}
}
$listnames[] = $origname;
$select->add($name, $imap_name);
}
return $select;
}
/**
* Returns a list of folder names
*
* @param string Optional root folder
* @param string Optional name pattern
* @param string Data type to list folders for (contact,event,task,journal,file,note,mail,configuration)
* @param boolean Enable to return subscribed folders only (null to use configured subscription mode)
* @param array Will be filled with folder-types data
*
* @return array List of folders
*/
public static function list_folders($root = '', $mbox = '*', $filter = null, $subscribed = null, &$folderdata = array())
{
if (!self::setup()) {
return null;
}
// use IMAP subscriptions
if ($subscribed === null && self::$config->get('kolab_use_subscriptions')) {
$subscribed = true;
}
if (!$filter) {
// Get ALL folders list, standard way
if ($subscribed) {
$folders = self::_imap_list_subscribed($root, $mbox);
}
else {
$folders = self::_imap_list_folders($root, $mbox);
}
return $folders;
}
$prefix = $root . $mbox;
$regexp = '/^' . preg_quote($filter, '/') . '(\..+)?$/';
// get folders types for all folders
$folderdata = self::folders_typedata($prefix);
if (!is_array($folderdata)) {
return array();
}
// If we only want groupware folders and don't care about the subscription state,
// then the metadata will already contain all folder names and we can avoid the LIST below.
if (!$subscribed && $filter != 'mail' && $prefix == '*') {
foreach ($folderdata as $folder => $type) {
if (!preg_match($regexp, $type)) {
unset($folderdata[$folder]);
}
}
return self::$imap->sort_folder_list(array_keys($folderdata), true);
}
// Get folders list
if ($subscribed) {
$folders = self::_imap_list_subscribed($root, $mbox);
}
else {
$folders = self::_imap_list_folders($root, $mbox);
}
// In case of an error, return empty list (?)
if (!is_array($folders)) {
return array();
}
// Filter folders list
foreach ($folders as $idx => $folder) {
$type = $folderdata[$folder];
if ($filter == 'mail' && empty($type)) {
continue;
}
if (empty($type) || !preg_match($regexp, $type)) {
unset($folders[$idx]);
}
}
return $folders;
}
/**
* Wrapper for rcube_imap::list_folders() with optional post-filtering
*/
protected static function _imap_list_folders($root, $mbox)
{
$postfilter = null;
// compose a post-filter expression for the excluded namespaces
if ($root . $mbox == '*' && ($skip_ns = self::$config->get('kolab_skip_namespace'))) {
$excludes = array();
foreach ((array)$skip_ns as $ns) {
if ($ns_root = self::namespace_root($ns)) {
$excludes[] = $ns_root;
}
}
if (count($excludes)) {
$postfilter = '!^(' . join(')|(', array_map('preg_quote', $excludes)) . ')!';
}
}
// use normal LIST command to return all folders, it's fast enough
$folders = self::$imap->list_folders($root, $mbox, null, null, !empty($postfilter));
if (!empty($postfilter)) {
$folders = array_filter($folders, function($folder) use ($postfilter) { return !preg_match($postfilter, $folder); });
$folders = self::$imap->sort_folder_list($folders);
}
return $folders;
}
/**
* Wrapper for rcube_imap::list_folders_subscribed()
* with support for temporarily subscribed folders
*/
protected static function _imap_list_subscribed($root, $mbox)
{
$folders = self::$imap->list_folders_subscribed($root, $mbox);
// add temporarily subscribed folders
if (self::$with_tempsubs && is_array($_SESSION['kolab_subscribed_folders'])) {
$folders = array_unique(array_merge($folders, $_SESSION['kolab_subscribed_folders']));
}
return $folders;
}
/**
* Search for shared or otherwise not listed groupware folders the user has access
*
* @param string Folder type of folders to search for
* @param string Search string
* @param array Namespace(s) to exclude results from
*
* @return array List of matching kolab_storage_folder objects
*/
public static function search_folders($type, $query, $exclude_ns = array())
{
if (!self::setup()) {
return array();
}
$folders = array();
$query = str_replace('*', '', $query);
// find unsubscribed IMAP folders of the given type
foreach ((array)self::list_folders('', '*', $type, false, $folderdata) as $foldername) {
// FIXME: only consider the last part of the folder path for searching?
$realname = strtolower(rcube_charset::convert($foldername, 'UTF7-IMAP'));
if (($query == '' || strpos($realname, $query) !== false) &&
!self::folder_is_subscribed($foldername, true) &&
!in_array(self::$imap->folder_namespace($foldername), (array)$exclude_ns)
) {
$folders[] = new kolab_storage_folder($foldername, $type, $folderdata[$foldername]);
}
}
return $folders;
}
/**
* Sort the given list of kolab folders by namespace/name
*
* @param array List of kolab_storage_folder objects
* @return array Sorted list of folders
*/
public static function sort_folders($folders)
{
$pad = ' ';
$out = array();
$nsnames = array('personal' => array(), 'shared' => array(), 'other' => array());
foreach ($folders as $folder) {
$_folders[$folder->name] = $folder;
$ns = $folder->get_namespace();
$nsnames[$ns][$folder->name] = strtolower(html_entity_decode($folder->get_name(), ENT_COMPAT, RCUBE_CHARSET)) . $pad; // decode »
}
// $folders is a result of get_folders() we can assume folders were already sorted
foreach (array_keys($nsnames) as $ns) {
asort($nsnames[$ns], SORT_LOCALE_STRING);
foreach (array_keys($nsnames[$ns]) as $utf7name) {
$out[] = $_folders[$utf7name];
}
}
return $out;
}
/**
* Check the folder tree and add the missing parents as virtual folders
*
* @param array $folders Folders list
* @param object $tree Reference to the root node of the folder tree
*
* @return array Flat folders list
*/
public static function folder_hierarchy($folders, &$tree = null)
{
if (!self::setup()) {
return array();
}
$_folders = array();
$delim = self::$imap->get_hierarchy_delimiter();
$other_ns = rtrim(self::namespace_root('other'), $delim);
$tree = new kolab_storage_folder_virtual('', '<root>', ''); // create tree root
$refs = array('' => $tree);
foreach ($folders as $idx => $folder) {
$path = explode($delim, $folder->name);
array_pop($path);
$folder->parent = join($delim, $path);
$folder->children = array(); // reset list
// skip top folders or ones with a custom displayname
if (count($path) < 1 || kolab_storage::custom_displayname($folder->name)) {
$tree->children[] = $folder;
}
else {
$parents = array();
$depth = $folder->get_namespace() == 'personal' ? 1 : 2;
while (count($path) >= $depth && ($parent = join($delim, $path))) {
array_pop($path);
$parent_parent = join($delim, $path);
if (!$refs[$parent]) {
if ($folder->type && self::folder_type($parent) == $folder->type) {
$refs[$parent] = new kolab_storage_folder($parent, $folder->type, $folder->type);
$refs[$parent]->parent = $parent_parent;
}
else if ($parent_parent == $other_ns) {
$refs[$parent] = new kolab_storage_folder_user($parent, $parent_parent);
}
else {
$name = kolab_storage::object_name($parent);
$refs[$parent] = new kolab_storage_folder_virtual($parent, $name, $folder->get_namespace(), $parent_parent);
}
$parents[] = $refs[$parent];
}
}
if (!empty($parents)) {
$parents = array_reverse($parents);
foreach ($parents as $parent) {
$parent_node = $refs[$parent->parent] ?: $tree;
$parent_node->children[] = $parent;
$_folders[] = $parent;
}
}
$parent_node = $refs[$folder->parent] ?: $tree;
$parent_node->children[] = $folder;
}
$refs[$folder->name] = $folder;
$_folders[] = $folder;
unset($folders[$idx]);
}
return $_folders;
}
/**
* Returns folder types indexed by folder name
*
* @param string $prefix Folder prefix (Default '*' for all folders)
*
* @return array|bool List of folders, False on failure
*/
public static function folders_typedata($prefix = '*')
{
if (!self::setup()) {
return false;
}
$type_keys = array(self::CTYPE_KEY, self::CTYPE_KEY_PRIVATE);
// fetch metadata from *some* folders only
if (($prefix == '*' || $prefix == '') && ($skip_ns = self::$config->get('kolab_skip_namespace'))) {
$delimiter = self::$imap->get_hierarchy_delimiter();
$folderdata = $blacklist = array();
foreach ((array)$skip_ns as $ns) {
if ($ns_root = rtrim(self::namespace_root($ns), $delimiter)) {
$blacklist[] = $ns_root;
}
}
foreach (array('personal','other','shared') as $ns) {
if (!in_array($ns, (array)$skip_ns)) {
$ns_root = rtrim(self::namespace_root($ns), $delimiter);
// list top-level folders and their childs one by one
// GETMETADATA "%" doesn't list shared or other namespace folders but "*" would
if ($ns_root == '') {
foreach ((array)self::$imap->get_metadata('%', $type_keys) as $folder => $metadata) {
if (!in_array($folder, $blacklist)) {
$folderdata[$folder] = $metadata;
$opts = self::$imap->folder_attributes($folder);
if (!in_array('\\HasNoChildren', $opts) && ($data = self::$imap->get_metadata($folder.$delimiter.'*', $type_keys))) {
$folderdata += $data;
}
}
}
}
else if ($data = self::$imap->get_metadata($ns_root.$delimiter.'*', $type_keys)) {
$folderdata += $data;
}
}
}
}
else {
$folderdata = self::$imap->get_metadata($prefix, $type_keys);
}
if (!is_array($folderdata)) {
return false;
}
return array_map(array('kolab_storage', 'folder_select_metadata'), $folderdata);
}
/**
* Callback for array_map to select the correct annotation value
*/
public static function folder_select_metadata($types)
{
if (!empty($types[self::CTYPE_KEY_PRIVATE])) {
return $types[self::CTYPE_KEY_PRIVATE];
}
else if (!empty($types[self::CTYPE_KEY])) {
list($ctype, ) = explode('.', $types[self::CTYPE_KEY]);
return $ctype;
}
return null;
}
/**
* Returns type of IMAP folder
*
* @param string $folder Folder name (UTF7-IMAP)
*
* @return string Folder type
*/
public static function folder_type($folder)
{
self::setup();
$metadata = self::$imap->get_metadata($folder, array(self::CTYPE_KEY, self::CTYPE_KEY_PRIVATE));
if (!is_array($metadata)) {
return null;
}
if (!empty($metadata[$folder])) {
return self::folder_select_metadata($metadata[$folder]);
}
return 'mail';
}
/**
* Sets folder content-type.
*
* @param string $folder Folder name
* @param string $type Content type
*
* @return boolean True on success
*/
public static function set_folder_type($folder, $type='mail')
{
self::setup();
list($ctype, $subtype) = explode('.', $type);
$success = self::$imap->set_metadata($folder, array(self::CTYPE_KEY => $ctype, self::CTYPE_KEY_PRIVATE => $subtype ? $type : null));
if (!$success) // fallback: only set private annotation
$success |= self::$imap->set_metadata($folder, array(self::CTYPE_KEY_PRIVATE => $type));
return $success;
}
/**
* Check subscription status of this folder
*
* @param string $folder Folder name
* @param boolean $temp Include temporary/session subscriptions
*
* @return boolean True if subscribed, false if not
*/
public static function folder_is_subscribed($folder, $temp = false)
{
if (self::$subscriptions === null) {
self::setup();
self::$with_tempsubs = false;
self::$subscriptions = self::$imap->list_folders_subscribed();
self::$with_tempsubs = true;
}
return in_array($folder, self::$subscriptions) ||
($temp && in_array($folder, (array)$_SESSION['kolab_subscribed_folders']));
}
/**
* Change subscription status of this folder
*
* @param string $folder Folder name
* @param boolean $temp Only subscribe temporarily for the current session
*
* @return True on success, false on error
*/
public static function folder_subscribe($folder, $temp = false)
{
self::setup();
// temporary/session subscription
if ($temp) {
if (self::folder_is_subscribed($folder)) {
return true;
}
else if (!is_array($_SESSION['kolab_subscribed_folders']) || !in_array($folder, $_SESSION['kolab_subscribed_folders'])) {
$_SESSION['kolab_subscribed_folders'][] = $folder;
return true;
}
}
else if (self::$imap->subscribe($folder)) {
self::$subscriptions = null;
return true;
}
return false;
}
/**
* Change subscription status of this folder
*
* @param string $folder Folder name
* @param boolean $temp Only remove temporary subscription
*
* @return True on success, false on error
*/
public static function folder_unsubscribe($folder, $temp = false)
{
self::setup();
// temporary/session subscription
if ($temp) {
if (is_array($_SESSION['kolab_subscribed_folders']) && ($i = array_search($folder, $_SESSION['kolab_subscribed_folders'])) !== false) {
unset($_SESSION['kolab_subscribed_folders'][$i]);
}
return true;
}
else if (self::$imap->unsubscribe($folder)) {
self::$subscriptions = null;
return true;
}
return false;
}
/**
* Check activation status of this folder
*
* @param string $folder Folder name
*
* @return boolean True if active, false if not
*/
public static function folder_is_active($folder)
{
$active_folders = self::get_states();
return in_array($folder, $active_folders);
}
/**
* Change activation status of this folder
*
* @param string $folder Folder name
*
* @return True on success, false on error
*/
public static function folder_activate($folder)
{
// activation implies temporary subscription
self::folder_subscribe($folder, true);
return self::set_state($folder, true);
}
/**
* Change activation status of this folder
*
* @param string $folder Folder name
*
* @return True on success, false on error
*/
public static function folder_deactivate($folder)
{
// remove from temp subscriptions, really?
self::folder_unsubscribe($folder, true);
return self::set_state($folder, false);
}
/**
* Return list of active folders
*/
private static function get_states()
{
if (self::$states !== null) {
return self::$states;
}
$rcube = rcube::get_instance();
$folders = $rcube->config->get('kolab_active_folders');
if ($folders !== null) {
self::$states = !empty($folders) ? explode('**', $folders) : array();
}
// for backward-compatibility copy server-side subscriptions to activation states
else {
self::setup();
if (self::$subscriptions === null) {
self::$with_tempsubs = false;
self::$subscriptions = self::$imap->list_folders_subscribed();
self::$with_tempsubs = true;
}
self::$states = (array) self::$subscriptions;
$folders = implode('**', self::$states);
$rcube->user->save_prefs(array('kolab_active_folders' => $folders));
}
return self::$states;
}
/**
* Update list of active folders
*/
private static function set_state($folder, $state)
{
self::get_states();
// update in-memory list
$idx = array_search($folder, self::$states);
if ($state && $idx === false) {
self::$states[] = $folder;
}
else if (!$state && $idx !== false) {
unset(self::$states[$idx]);
}
// update user preferences
$folders = implode('**', self::$states);
return rcube::get_instance()->user->save_prefs(array('kolab_active_folders' => $folders));
}
/**
* Creates default folder of specified type
* To be run when none of subscribed folders (of specified type) is found
*
* @param string $type Folder type
* @param string $props Folder properties (color, etc)
*
* @return string Folder name
*/
public static function create_default_folder($type, $props = array())
{
if (!self::setup()) {
return;
}
$folders = self::$imap->get_metadata('*', array(kolab_storage::CTYPE_KEY_PRIVATE));
// from kolab_folders config
$folder_type = strpos($type, '.') ? str_replace('.', '_', $type) : $type . '_default';
$default_name = self::$config->get('kolab_folders_' . $folder_type);
$folder_type = str_replace('_', '.', $folder_type);
// check if we have any folder in personal namespace
// folder(s) may exist but not subscribed
foreach ((array)$folders as $f => $data) {
if (strpos($data[self::CTYPE_KEY_PRIVATE], $type) === 0) {
$folder = $f;
break;
}
}
if (!$folder) {
if (!$default_name) {
$default_name = self::$default_folders[$type];
}
if (!$default_name) {
return;
}
$folder = rcube_charset::convert($default_name, RCUBE_CHARSET, 'UTF7-IMAP');
$prefix = self::$imap->get_namespace('prefix');
// add personal namespace prefix if needed
if ($prefix && strpos($folder, $prefix) !== 0 && $folder != 'INBOX') {
$folder = $prefix . $folder;
}
if (!self::$imap->folder_exists($folder)) {
if (!self::$imap->create_folder($folder)) {
return;
}
}
self::set_folder_type($folder, $folder_type);
}
self::folder_subscribe($folder);
if ($props['active']) {
self::set_state($folder, true);
}
if (!empty($props)) {
self::set_folder_props($folder, $props);
}
return $folder;
}
/**
* Sets folder metadata properties
*
* @param string $folder Folder name
* @param array &$prop Folder properties (color, displayname)
*/
public static function set_folder_props($folder, &$prop)
{
if (!self::setup()) {
return;
}
// TODO: also save 'showalarams' and other properties here
$ns = self::$imap->folder_namespace($folder);
$supported = array(
'color' => array(self::COLOR_KEY_SHARED, self::COLOR_KEY_PRIVATE),
'displayname' => array(self::NAME_KEY_SHARED, self::NAME_KEY_PRIVATE),
);
foreach ($supported as $key => $metakeys) {
if (array_key_exists($key, $prop)) {
$meta_saved = false;
if ($ns == 'personal') // save in shared namespace for personal folders
$meta_saved = self::$imap->set_metadata($folder, array($metakeys[0] => $prop[$key]));
if (!$meta_saved) // try in private namespace
$meta_saved = self::$imap->set_metadata($folder, array($metakeys[1] => $prop[$key]));
if ($meta_saved)
unset($prop[$key]); // unsetting will prevent fallback to local user prefs
}
}
}
/**
* Search users in Kolab LDAP storage
*
* @param mixed $query Search value (or array of field => value pairs)
* @param int $mode Matching mode: 0 - partial (*abc*), 1 - strict (=), 2 - prefix (abc*)
* @param array $required List of fields that shall ot be empty
* @param int $limit Maximum number of records
* @param int $count Returns the number of records found
*
* @return array List of users
*/
public static function search_users($query, $mode = 1, $required = array(), $limit = 0, &$count = 0)
{
$query = str_replace('*', '', $query);
// requires a working LDAP setup
if (!strlen($query) || !($ldap = self::ldap())) {
return array();
}
$root = self::namespace_root('other');
$user_attrib = self::$config->get('kolab_users_id_attrib', self::$config->get('kolab_auth_login', 'mail'));
$search_attrib = self::$config->get('kolab_users_search_attrib', array('cn','mail','alias'));
// search users using the configured attributes
$results = $ldap->dosearch($search_attrib, $query, $mode, $required, $limit, $count);
// exclude myself
if ($_SESSION['kolab_dn']) {
unset($results[$_SESSION['kolab_dn']]);
}
// resolve to IMAP folder name
array_walk($results, function(&$user, $dn) use ($root, $user_attrib) {
list($localpart, ) = explode('@', $user[$user_attrib]);
$user['kolabtargetfolder'] = $root . $localpart;
});
return $results;
}
/**
* Returns a list of IMAP folders shared by the given user
*
* @param array User entry from LDAP
* @param string Data type to list folders for (contact,event,task,journal,file,note,mail,configuration)
* @param int 1 - subscribed folders only, 0 - all folders, 2 - all non-active
* @param array Will be filled with folder-types data
*
* @return array List of folders
*/
public static function list_user_folders($user, $type, $subscribed = 0, &$folderdata = array())
{
self::setup();
$folders = array();
// use localpart of user attribute as root for folder listing
$user_attrib = self::$config->get('kolab_users_id_attrib', self::$config->get('kolab_auth_login', 'mail'));
if (!empty($user[$user_attrib])) {
list($mbox) = explode('@', $user[$user_attrib]);
$delimiter = self::$imap->get_hierarchy_delimiter();
$other_ns = self::namespace_root('other');
$prefix = $other_ns . $mbox . $delimiter;
$subscribed = (int) $subscribed;
$subs = $subscribed < 2 ? (bool) $subscribed : false;
$folders = self::list_folders($prefix, '*', $type, $subs, $folderdata);
if ($subscribed === 2 && !empty($folders)) {
$active = self::get_states();
if (!empty($active)) {
$folders = array_diff($folders, $active);
}
}
}
return $folders;
}
/**
* Get a list of (virtual) top-level folders from the other users namespace
*
* @param string Data type to list folders for (contact,event,task,journal,file,note,mail,configuration)
* @param boolean Enable to return subscribed folders only (null to use configured subscription mode)
*
* @return array List of kolab_storage_folder_user objects
*/
public static function get_user_folders($type, $subscribed)
{
$folders = $folderdata = array();
if (self::setup()) {
$delimiter = self::$imap->get_hierarchy_delimiter();
$other_ns = rtrim(self::namespace_root('other'), $delimiter);
$path_len = count(explode($delimiter, $other_ns));
foreach ((array)self::list_folders($other_ns . $delimiter, '*', '', $subscribed) as $foldername) {
if ($foldername == 'INBOX') // skip INBOX which is added by default
continue;
$path = explode($delimiter, $foldername);
// compare folder type if a subfolder is listed
if ($type && count($path) > $path_len + 1 && $type != self::folder_type($foldername)) {
continue;
}
// truncate folder path to top-level folders of the 'other' namespace
$foldername = join($delimiter, array_slice($path, 0, $path_len + 1));
if (!$folders[$foldername]) {
$folders[$foldername] = new kolab_storage_folder_user($foldername, $other_ns);
}
}
// for every (subscribed) user folder, list all (unsubscribed) subfolders
foreach ($folders as $userfolder) {
foreach ((array)self::list_folders($userfolder->name . $delimiter, '*', $type, false, $folderdata) as $foldername) {
if (!$folders[$foldername]) {
$folders[$foldername] = new kolab_storage_folder($foldername, $type, $folderdata[$foldername]);
$userfolder->children[] = $folders[$foldername];
}
}
}
}
return $folders;
}
/**
* Handler for user_delete plugin hooks
*
* Remove all cache data from the local database related to the given user.
*/
public static function delete_user_folders($args)
{
$db = rcmail::get_instance()->get_dbh();
$prefix = 'imap://' . urlencode($args['username']) . '@' . $args['host'] . '/%';
$db->query("DELETE FROM " . $db->table_name('kolab_folders', true) . " WHERE `resource` LIKE ?", $prefix);
}
/**
* Get folder METADATA for all supported keys
* Do this in one go for better caching performance
*/
public static function folder_metadata($folder)
{
if (self::setup()) {
$keys = array(
// For better performance we skip displayname here, see (self::custom_displayname())
// self::NAME_KEY_PRIVATE,
// self::NAME_KEY_SHARED,
self::CTYPE_KEY,
self::CTYPE_KEY_PRIVATE,
self::COLOR_KEY_PRIVATE,
self::COLOR_KEY_SHARED,
self::UID_KEY_SHARED,
self::UID_KEY_CYRUS,
);
$metadata = self::$imap->get_metadata($folder, $keys);
return $metadata[$folder];
}
}
/**
* Get user attributes for specified other user (imap) folder identifier.
*
* @param string $folder_id Folder name w/o path (imap user identifier)
* @param bool $as_string Return configured display name attribute value
*
* @return array User attributes
* @see self::ldap()
*/
public static function folder_id2user($folder_id, $as_string = false)
{
static $domain, $cache, $name_attr;
$rcube = rcube::get_instance();
if ($domain === null) {
list(, $domain) = explode('@', $rcube->get_user_name());
}
if ($name_attr === null) {
$name_attr = (array) ($rcube->config->get('kolab_users_name_field', $rcube->config->get('kolab_auth_name')) ?: 'name');
}
$token = $folder_id;
if ($domain && strpos($find, '@') === false) {
$token .= '@' . $domain;
}
if ($cache === null) {
$cache = $rcube->get_cache_shared('kolab_users') ?: false;
}
// use value cached in memory for repeated lookups
if (!$cache && array_key_exists($token, self::$ldapcache)) {
$user = self::$ldapcache[$token];
}
if (empty($user) && $cache) {
$user = $cache->get($token);
}
if (empty($user) && ($ldap = self::ldap())) {
$user = $ldap->get_user_record($token, $_SESSION['imap_host']);
if (!empty($user)) {
$keys = array('displayname', 'name', 'mail'); // supported keys
$user = array_intersect_key($user, array_flip($keys));
if (!empty($user)) {
if ($cache) {
$cache->set($token, $user);
}
else {
self::$ldapcache[$token] = $user;
}
}
}
}
if (!empty($user)) {
if ($as_string) {
foreach ($name_attr as $attr) {
if ($display = $user[$attr]) {
break;
}
}
if (!$display) {
$display = $user['displayname'] ?: $user['name'];
}
if ($display && $display != $folder_id) {
$display = "$display ($folder_id)";
}
return $display;
}
return $user;
}
}
/**
* Chwala's 'folder_mod' hook handler for mapping other users folder names
*/
public static function folder_mod($args)
{
static $roots;
if ($roots === null) {
self::setup();
$roots = self::$imap->get_namespace('other');
}
// Note: We're working with UTF7-IMAP encoding here
if ($args['dir'] == 'in') {
foreach ((array) $roots as $root) {
if (strpos($args['folder'], $root[0]) === 0) {
// remove root and explode folder
$delim = $root[1];
$folder = explode($delim, substr($args['folder'], strlen($root[0])));
// compare first (user) part with a regexp, it's supposed
// to look like this: "Doe, Jane (uid)", so we can extract the uid
// and replace the folder with it
if (preg_match('~^[^/]+ \(([^)]+)\)$~', $folder[0], $m)) {
$folder[0] = $m[1];
$args['folder'] = $root[0] . implode($delim, $folder);
}
break;
}
}
}
else { // dir == 'out'
foreach ((array) $roots as $root) {
if (strpos($args['folder'], $root[0]) === 0) {
// remove root and explode folder
$delim = $root[1];
$folder = explode($delim, substr($args['folder'], strlen($root[0])));
// Replace uid with "Doe, Jane (uid)"
if ($user = self::folder_id2user($folder[0], true)) {
$user = str_replace($delim, '', $user);
$folder[0] = rcube_charset::convert($user, RCUBE_CHARSET, 'UTF7-IMAP');
$args['folder'] = $root[0] . implode($delim, $folder);
}
break;
}
}
}
return $args;
}
}
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