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diff --git a/lib/kolab_sync_backend.php b/lib/kolab_sync_backend.php
index 5e33506..b8f5463 100644
--- a/lib/kolab_sync_backend.php
+++ b/lib/kolab_sync_backend.php
@@ -1,995 +1,995 @@
<?php
/**
+--------------------------------------------------------------------------+
| Kolab Sync (ActiveSync for Kolab) |
| |
| Copyright (C) 2011-2012, 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/> |
+--------------------------------------------------------------------------+
| Author: Aleksander Machniak <machniak@kolabsys.com> |
+--------------------------------------------------------------------------+
*/
class kolab_sync_backend
{
/**
* Singleton instace of kolab_sync_backend
*
* @var kolab_sync_backend
*/
static protected $instance;
protected $storage;
protected $folder_meta;
protected $folder_uids;
protected $root_meta;
static protected $types = array(
1 => '',
2 => 'mail.inbox',
3 => 'mail.drafts',
4 => 'mail.wastebasket',
5 => 'mail.sentitems',
6 => 'mail.outbox',
7 => 'task.default',
8 => 'event.default',
9 => 'contact.default',
10 => 'note.default',
11 => 'journal.default',
12 => 'mail',
13 => 'event',
14 => 'contact',
15 => 'task',
16 => 'journal',
17 => 'note',
);
static protected $classes = array(
Syncroton_Data_Factory::CLASS_CALENDAR => 'event',
Syncroton_Data_Factory::CLASS_CONTACTS => 'contact',
Syncroton_Data_Factory::CLASS_EMAIL => 'mail',
Syncroton_Data_Factory::CLASS_TASKS => 'task',
);
const ROOT_MAILBOX = 'INBOX';
// const ROOT_MAILBOX = '';
const ASYNC_KEY = '/private/vendor/kolab/activesync';
const UID_KEY = '/shared/vendor/cmu/cyrus-imapd/uniqueid';
/**
* This implements the 'singleton' design pattern
*
* @return kolab_sync_backend The one and only instance
*/
static function get_instance()
{
if (!self::$instance) {
self::$instance = new kolab_sync_backend;
self::$instance->startup(); // init AFTER object was linked with self::$instance
}
return self::$instance;
}
/**
* Class initialization
*/
public function startup()
{
$this->storage = rcube::get_instance()->get_storage();
// @TODO: reset cache? if we do this for every request the cache would be useless
// There's no session here
//$this->storage->clear_cache('mailboxes.', true);
// set additional header used by libkolab
$this->storage->set_options(array(
// @TODO: there can be Roundcube plugins defining additional headers,
// we maybe would need to add them here
'fetch_headers' => 'X-KOLAB-TYPE X-KOLAB-MIME-VERSION',
'skip_deleted' => true,
'threading' => false,
));
// Disable paging
$this->storage->set_pagesize(999999);
}
/**
* List known devices
*
* @return array Device list as hash array
*/
public function devices_list()
{
if ($this->root_meta === null) {
// @TODO: consider server annotation instead of INBOX
if ($meta = $this->storage->get_metadata(self::ROOT_MAILBOX, self::ASYNC_KEY)) {
$this->root_meta = $this->unserialize_metadata($meta[self::ROOT_MAILBOX][self::ASYNC_KEY]);
}
else {
$this->root_meta = array();
}
}
if (!empty($this->root_meta['DEVICE']) && is_array($this->root_meta['DEVICE'])) {
return $this->root_meta['DEVICE'];
}
return array();
}
/**
* Get list of folders available for sync
*
* @param string $deviceid Device identifier
* @param string $type Folder type
*
* @return array List of mailbox folders
*/
public function folders_list($deviceid, $type)
{
$folders_list = array();
// get all folders of specified type
$folders = (array) kolab_storage::list_folders('', '*', $type, false, $typedata);
// get folders activesync config
$folderdata = $this->folder_meta();
// check if folders are "subscribed" for activesync
foreach ($folderdata as $folder => $meta) {
if (empty($meta['FOLDER']) || empty($meta['FOLDER'][$deviceid])
|| empty($meta['FOLDER'][$deviceid]['S'])
) {
continue;
}
if (!empty($type) && !in_array($folder, $folders)) {
continue;
}
// Activesync folder identifier (serverId)
$folder_id = self::folder_id($folder, $typedata[$folder]);
$folders_list[$folder_id] = $this->folder_data($folder, $typedata[$folder]);
}
return $folders_list;
}
/**
* Getter for folder metadata
*
* @return array Hash array with meta data for each folder
*/
public function folder_meta()
{
if (!isset($this->folder_meta)) {
$this->folder_meta = array();
// get folders activesync config
$folderdata = $this->storage->get_metadata("*", self::ASYNC_KEY);
foreach ($folderdata as $folder => $meta) {
if ($asyncdata = $meta[self::ASYNC_KEY]) {
if ($metadata = $this->unserialize_metadata($asyncdata)) {
$this->folder_meta[$folder] = $metadata;
}
}
}
}
return $this->folder_meta;
}
/**
* Creates folder and subscribes to the device
*
* @param string $name Folder name (UTF7-IMAP)
* @param int $type Folder (ActiveSync) type
* @param string $deviceid Device identifier
*
* @return bool True on success, False on failure
*/
public function folder_create($name, $type, $deviceid)
{
if ($this->storage->folder_exists($name)) {
$created = true;
}
else {
$type = self::type_activesync2kolab($type);
$created = kolab_storage::folder_create($name, $kolab_type);
}
if ($created) {
// Set ActiveSync subscription flag
$this->folder_set($name, $deviceid, 1);
return true;
}
return false;
}
/**
* Renames a folder
*
* @param string $old_name Old folder name (UTF7-IMAP)
* @param string $new_name New folder name (UTF7-IMAP)
* @param int $type Folder (ActiveSync) type
* @param string $deviceid Device identifier
*
* @return bool True on success, False on failure
*/
public function folder_rename($old_name, $new_name, $type, $deviceid)
{
$type = self::type_activesync2kolab($type);
$moved = kolab_storage::folder_rename($old_name, $new_name);
if ($moved) {
// UnSet ActiveSync subscription flag
$this->folder_set($old_name, $deviceid, 0);
// Set ActiveSync subscription flag
$this->folder_set($new_name, $deviceid, 1);
return true;
}
return false;
}
/**
* Deletes folder
*
* @param string $name Folder name (UTF7-IMAP)
* @param string $deviceid Device identifier
*
*/
public function folder_delete($name, $deviceid)
{
unset($this->folder_meta[$name]);
return kolab_storage::folder_delete($name);
}
/**
* Sets ActiveSync subscription flag on a folder
*
* @param string $name Folder name (UTF7-IMAP)
* @param string $deviceid Device identifier
* @param int $flag Flag value (0|1|2)
*/
public function folder_set($name, $deviceid, $flag)
{
if (empty($deviceid)) {
return false;
}
// get folders activesync config
$metadata = $this->folder_meta();
$metadata = $metadata[$name];
if ($flag) {
if (empty($metadata)) {
$metadata = array();
}
if (empty($metadata['FOLDER'])) {
$metadata['FOLDER'] = array();
}
if (empty($metadata['FOLDER'][$deviceid])) {
$metadata['FOLDER'][$deviceid] = array();
}
// Z-Push uses:
// 1 - synchronize, no alarms
// 2 - synchronize with alarms
$metadata['FOLDER'][$deviceid]['S'] = $flag;
}
if (!$flag) {
unset($metadata['FOLDER'][$deviceid]['S']);
if (empty($metadata['FOLDER'][$deviceid])) {
unset($metadata['FOLDER'][$deviceid]);
}
if (empty($metadata['FOLDER'])) {
unset($metadata['FOLDER']);
}
if (empty($metadata)) {
$metadata = null;
}
}
// Return if nothing's been changed
if (!self::data_array_diff($this->folder_meta[$name], $metadata)) {
return true;
}
$this->folder_meta[$name] = $metadata;
return $this->storage->set_metadata($name, array(
self::ASYNC_KEY => $this->serialize_metadata($metadata)));
}
public function device_get($id)
{
$devices_list = $this->devices_list();
$result = $devices_list[$id];
return $result;
}
/**
* Registers new device on server
*
* @param array $device Device data
* @param string $id Device ID
*
* @return bool True on success, False on failure
*/
public function device_create($device, $id)
{
// Fill local cache
$this->devices_list();
// Old Kolab_ZPush device parameters
// MODE: -1 | 0 | 1 (not set | flatmode | foldermode)
// TYPE: device type string
// ALIAS: user-friendly device name
// Syncroton (kolab_sync_backend_device) uses
// ID: internal identifier in syncroton database
// TYPE: device type string
// ALIAS: user-friendly device name
$metadata = $this->root_meta;
- $metadata['DEVICE'][$id] = $device
+ $metadata['DEVICE'][$id] = $device;
$metadata = array(self::ASYNC_KEY => $this->serialize_metadata($metadata));
$result = $this->storage->set_metadata(self::ROOT_MAILBOX, $metadata);
if ($result) {
// Update local cache
$this->root_meta['DEVICE'][$id] = $device;
// Subscribe to default folders
$foldertypes = $this->storage->get_metadata('*', kolab_storage::CTYPE_KEY);
$types = array(
'mail.drafts',
'mail.wastebasket',
'mail.sentitems',
'mail.outbox',
'event.default',
'contact.default',
'task.default',
);
$foldertypes = array_map('implode', $foldertypes);
$foldertypes = array_intersect($foldertypes, $types);
// get default folders
foreach ($foldertypes as $folder => $type) {
// only personal folders
if ($this->storage->folder_namespace($folder) == 'personal') {
$this->folder_set($folder, $id, 1);
}
}
// INBOX always exists
$this->folder_set('INBOX', $id, 1);
}
return $result;
}
public function device_update($device, $id)
{
$devices_list = $this->devices_list();
$old_device = $devices_list[$id];
if (!$old_device) {
return false;
}
// Do nothing if nothing is changed
if (!self::data_array_diff($old_device, $device)) {
return true;
}
$device = array_merge($old_device, $device);
$metadata = $this->root_meta;
$metadata['DEVICE'][$id] = $device;
$metadata = array(self::ASYNC_KEY => $this->serialize_metadata($metadata));
$result = $this->storage->set_metadata(self::ROOT_MAILBOX, $metadata);
if ($result) {
// Update local cache
$this->root_meta['DEVICE'][$id] = $device;
}
return $result;
}
/**
* Device delete.
*
* @param string $id Device ID
*
* @return bool True on success, False on failure
*/
public function device_delete($id)
{
$device = $this->device_get($id);
if (!$device) {
return false;
}
unset($this->root_meta['DEVICE'][$id], $this->root_meta['FOLDER'][$id]);
if (empty($this->root_meta['DEVICE'])) {
unset($this->root_meta['DEVICE']);
}
if (empty($this->root_meta['FOLDER'])) {
unset($this->root_meta['FOLDER']);
}
$metadata = $this->serialize_metadata($this->root_meta);
$metadata = array(self::ASYNC_KEY => $metadata);
// update meta data
$result = $this->storage->set_metadata(self::ROOT_MAILBOX, $metadata);
if ($result) {
// remove device annotation for every folder
foreach ($this->folder_meta() as $folder => $meta) {
// skip root folder (already handled above)
if ($folder == self::ROOT_MAILBOX)
continue;
if (!empty($meta['FOLDER']) && isset($meta['FOLDER'][$id])) {
unset($meta['FOLDER'][$id]);
if (empty($meta['FOLDER'])) {
unset($this->folder_meta[$folder]['FOLDER']);
unset($meta['FOLDER']);
}
if (empty($meta)) {
unset($this->folder_meta[$folder]);
$meta = null;
}
$metadata = array(self::ASYNC_KEY => $this->serialize_metadata($meta));
$res = $this->storage->set_metadata($folder, $metadata);
if ($res && $meta) {
$this->folder_meta[$folder] = $meta;
}
}
}
}
return $result;
}
/**
* Helper method to decode saved IMAP metadata
*/
private function unserialize_metadata($str)
{
if (!empty($str)) {
// Support old Z-Push annotation format
if ($str[0] != '{') {
$str = base64_decode($str);
}
$data = json_decode($str, true);
return $data;
}
return null;
}
/**
* Helper method to encode IMAP metadata for saving
*/
private function serialize_metadata($data)
{
if (!empty($data) && is_array($data)) {
$data = json_encode($data);
// $data = base64_encode($data);
return $data;
}
return null;
}
/**
* Returns Kolab folder type for specified ActiveSync type ID
*/
public static function type_activesync2kolab($type)
{
if (!empty(self::$types[$type])) {
return self::$types[$type];
}
return '';
}
/**
* Returns ActiveSync folder type for specified Kolab type
*/
public static function type_kolab2activesync($type)
{
if ($key = array_search($type, self::$types)) {
return $key;
}
return key(self::$types);
}
/**
* Returns Kolab folder type for specified ActiveSync class name
*/
public static function class_activesync2kolab($class)
{
if (!empty(self::$classes[$class])) {
return self::$classes[$class];
}
return '';
}
private function folder_data($folder, $type)
{
// Folder name parameters
$delim = $this->storage->get_hierarchy_delimiter();
$items = explode($delim, $folder);
$name = array_pop($items);
// Folder UID
$folder_id = $this->folder_id($folder);
// Syncroton folder data array
return array(
'serverId' => $folder_id,
'parentId' => count($items) ? self::folder_id(implode($delim, $items)) : 0,
'displayName' => rcube_charset::convert($name, 'UTF7-IMAP', kolab_sync::CHARSET),
'type' => self::type_kolab2activesync($type),
);
}
/**
* Builds folder ID based on folder name
*/
public function folder_id($name, $type = null)
{
// ActiveSync expects folder identifiers to be max.64 characters
// So we can't use just folder name
if ($name === '' || !is_string($name)) {
return null;
}
if (isset($this->folder_uids[$name])) {
return $this->folder_uids[$name];
}
/*
@TODO: For now uniqueid annotation doesn't work, we will create UIDs by ourselves.
There's one inconvenience of this solution: folder name/type change
would be handled in ActiveSync as delete + create.
// get folders unique identifier
$folderdata = $this->storage->get_metadata($name, self::UID_KEY);
if ($folderdata && !empty($folderdata[$name])) {
$uid = $folderdata[$name][self::UID_KEY];
$this->folder_uids[$name] = $uid;
return $uid;
}
*/
// Add type to folder UID hash, so type change can be detected by Syncroton
if (!$type) {
$metadata = $this->storage->get_metadata($name, kolab_storage::CTYPE_KEY);
$type = $metadata[$name][kolab_storage::CTYPE_KEY];
}
$uid = md5($name . '!!' . $type);
return $this->folder_uids[$name] = $uid;
return $uid;
}
/**
* Returns IMAP folder name
*
* @param string $id Folder identifier
* @param string $deviceid Device dentifier
*
* @return string Folder name (UTF7-IMAP)
*/
public function folder_id2name($id, $deviceid)
{
// check in cache first
if (!empty($this->folder_uids)) {
if (($name = array_search($id, $this->folder_uids)) !== false) {
return $name;
}
}
/*
@TODO: see folder_id()
// get folders unique identifier
$folderdata = $this->storage->get_metadata('*', self::UID_KEY);
foreach ((array)$folderdata as $folder => $data) {
if (!empty($data[self::UID_KEY])) {
$uid = $data[self::UID_KEY];
$this->folder_uids[$folder] = $uid;
if ($uid == $id) {
$name = $folder;
}
}
}
*/
// get all folders of specified type
$folderdata = $this->folder_meta();
// check if folders are "subscribed" for activesync
foreach ($folderdata as $folder => $meta) {
if (empty($meta['FOLDER']) || empty($meta['FOLDER'][$deviceid])
|| empty($meta['FOLDER'][$deviceid]['S'])
) {
continue;
}
$uid = self::folder_id($folder);
$this->folder_uids[$folder] = $uid;
if ($uid == $id) {
$name = $folder;
}
}
return $name;
}
/**
* Compares two arrays
*
* @param array $array1
* @param array $array2
*
* @return bool True if arrays differs, False otherwise
*/
private static function data_array_diff($array1, $array2)
{
if (!is_array($array1) || !is_array($array2)) {
return $array1 != $array2;
}
if (count($array1) != count($array2)) {
return true;
}
foreach ($array1 as $key => $val) {
if (!array_key_exists($key, $array2)) {
return true;
}
if ($val !== $array2[$key]) {
return true;
}
}
return false;
}
/**
* Send the given message using the configured method.
*
* @param string $message Complete message source
* @param array $smtp_error SMTP error array (reference)
* @param array $smtp_opts SMTP options (e.g. DSN request)
*
* @return boolean Send status.
*/
public function send_message(&$message, &$smtp_error, $smtp_opts = null)
{
$rcube = rcube::get_instance();
list($headers, $message) = $this->parse_mime($message);
$mailto = $headers['To'];
$headers['User-Agent'] .= sprintf('%s v.%.1f', $rcube->app_name, kolab_sync::VERSION);
if ($agent = $rcube->config->get('useragent')) {
$headers['User-Agent'] .= '/' . $agent;
}
if (empty($headers['From'])) {
$headers['From'] = $this->get_identity();
}
if (empty($headers['Message-ID'])) {
$headers['Message-ID'] = $this->gen_message_id();
}
// remove empty headers
$headers = array_filter($headers);
// send thru SMTP server using custom SMTP library
if ($rcube->config->get('smtp_server')) {
$smtp_headers = $headers;
// generate list of recipients
$recipients = array();
if (!empty($headers['To']))
$recipients[] = $headers['To'];
if (!empty($headers['Cc']))
$recipients[] = $headers['Cc'];
if (!empty($headers['Bcc']))
$recipients[] = $headers['Bcc'];
// remove Bcc header
unset($smtp_headers['Bcc']);
// send message
if (!is_object($rcube->smtp)) {
$rcube->smtp_init(true);
}
$sent = $rcube->smtp->send_mail($headers['From'], $recipients, $smtp_headers, $message, $smtp_opts);
$smtp_response = $rcube->smtp->get_response();
$smtp_error = $rcube->smtp->get_error();
// log error
if (!$sent) {
rcube::raise_error(array('code' => 800, 'type' => 'smtp',
'line' => __LINE__, 'file' => __FILE__,
'message' => "SMTP error: ".join("\n", $smtp_response)), true, false);
}
}
// send mail using PHP's mail() function
else {
$mail_headers = $headers;
$delim = $rcube->config->header_delimiter();
$subject = $headers['Subject'];
$to = $headers['To'];
// unset some headers because they will be added by the mail() function
unset($mail_headers['To'], $mail_headers['Subject']);
// #1485779
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
if (preg_match_all('/<([^@]+@[^>]+)>/', $to, $m)) {
$to = implode(', ', $m[1]);
}
}
foreach ($mail_headers as $header => $header_value) {
$mail_headers[$header] = $header . ': ' . $header_value;
}
$header_str = rtrim(implode("\r\n", $mail_headers));
if ($delim != "\r\n") {
$header_str = str_replace("\r\n", $delim, $header_str);
$msg_body = str_replace("\r\n", $delim, $message);
$to = str_replace("\r\n", $delim, $to);
$subject = str_replace("\r\n", $delim, $subject);
}
if (ini_get('safe_mode'))
$sent = mail($to, $subject, $message, $header_str);
else
$sent = mail($to, $subject, $message, $header_str, "-f$from");
}
if ($sent) {
$rcube->plugins->exec_hook('message_sent', array('headers' => $headers, 'body' => $message));
// remove MDN headers after sending
unset($headers['Return-Receipt-To'], $headers['Disposition-Notification-To']);
// get all recipients
if ($headers['Cc'])
$mailto .= ' ' . $headers['Cc'];
if ($headers['Bcc'])
$mailto .= ' ' . $headers['Bcc'];
if (preg_match_all('/<([^@]+@[^>]+)>/', $mailto, $m))
$mailto = implode(', ', array_unique($m[1]));
if ($rcube->config->get('smtp_log')) {
rcube::write_log('sendmail', sprintf("User %s [%s]; Message for %s; %s",
$rcube->get_user_name(),
$_SERVER['REMOTE_ADDR'],
$mailto,
!empty($smtp_response) ? join('; ', $smtp_response) : ''));
}
}
unset($headers['Bcc']);
// Build the message back
foreach ($headers as $header => $header_value) {
$headers[$header] = $header . ': ' . $header_value;
}
$message = trim(implode("\r\n", $headers)) . "\r\n\r\n" . ltrim($message);
return $sent;
}
/**
* MIME message parser
*
* @param string|resource $message MIME message source
* @param bool $decode_body Enables body decoding
*
* @return array Message headers array and message body
*/
public function parse_mime($message, $decode_body = false)
{
if (is_resource($message)) {
$message = stream_get_contents($message);
}
list($headers, $message) = preg_split('/\r?\n\r?\n/', $message, 2, PREG_SPLIT_NO_EMPTY);
// Parse headers to get sender and recipients
$headers = str_replace("\r\n", "\n", $headers);
$headers = explode("\n", trim($headers));
$ln = 0;
$lines = array();
foreach ($headers as $line) {
if (ord($line[0]) <= 32) {
$lines[$ln] .= (empty($lines[$ln]) ? '' : "\n") . $line;
}
else {
$lines[++$ln] = trim($line);
}
}
$headers = array();
$headers_map = array(
'subject' => 'Subject',
'from' => 'From',
'to' => 'To',
'cc' => 'Cc',
'bcc' => 'Bcc',
'message-id' => 'Message-ID',
'references' => 'References',
'content-type' => 'Content-Type',
'content-transfer-encoding' => 'Content-Transfer-Encoding',
);
foreach ($lines as $line) {
list($field, $string) = explode(':', $line, 2);
$_field = strtolower($field);
if (isset($headers_map[$_field])) {
$field = $headers_map[$_field];
}
$headers[$field] = trim($string);
}
// Decode body
if ($decode_body) {
$message = str_replace("\r\n", "\n", $message);
$encoding = strtolower($headers['Content-Transfer-Encoding']);
switch ($encoding) {
case 'base64':
$message = base64_decode($message);
break;
case 'quoted-printable':
$message = quoted_printable_decode($message);
break;
}
}
return array($headers, $message);
}
/**
* Creates complete MIME message body
*
* @param array $headers Message headers
* @param string $body Message body
*
* @return string Message source
*/
public function build_mime($headers, $body)
{
// Encode the body
$encoding = strtolower($headers['Content-Transfer-Encoding']);
switch ($encoding) {
case 'base64':
$body = base64_encode($body);
$body = chunk_split($body, 76, "\r\n");
break;
case 'quoted-printable':
$body = quoted_printable_encode($body);
break;
}
foreach ($headers as $header => $header_value) {
$headers[$header] = $header . ': ' . $header_value;
}
// Build the complete message
return trim(implode("\r\n", $headers)) . "\r\n\r\n" . ltrim($body);
}
/**
* Returns email address string from default identity of the current user
*/
protected function get_identity()
{
$user = kolab_sync::get_instance()->user;
if ($identity = $user->get_identity()) {
return format_email_recipient(format_email($identity['email']), $identity['name']);
}
}
/**
* Unique Message-ID generator.
*
* @return string Message-ID
*/
protected function gen_message_id()
{
$user = kolab_sync::get_instance()->user;
$local_part = md5(uniqid('rcmail'.mt_rand(),true));
$domain_part = $user->get_username('domain');
// Try to find FQDN, some spamfilters doesn't like 'localhost' (#1486924)
if (!preg_match('/\.[a-z]+$/i', $domain_part)) {
foreach (array($_SERVER['HTTP_HOST'], $_SERVER['SERVER_NAME']) as $host) {
$host = preg_replace('/:[0-9]+$/', '', $host);
if ($host && preg_match('/\.[a-z]+$/i', $host)) {
$domain_part = $host;
}
}
}
return sprintf('<%s@%s>', $local_part, $domain_part);
}
}

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