<?php
/**
* The kolab_storage_folder class represents an IMAP folder on the Kolab server.
*
* @version @package_version@
* @author Thomas Bruederli <bruederli@kolabsys.com>
* @author Aleksander Machniak <machniak@kolabsys.com>
*
* Copyright (C) 2012-2013, 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_folder extends kolab_storage_folder_api
{
/**
* The kolab_storage_cache instance for caching operations
* @var object
*/
public $cache;
/**
* Indicate validity status
* @var boolean
*/
public $valid = false;
protected $error = 0;
protected $resource_uri;
/**
* Default constructor
*
* @param string The folder name/path
* @param string Expected folder type
*/
function __construct($name, $type = null, $type_annotation = null)
{
parent::__construct($name);
$this->set_folder($name, $type, $type_annotation);
}
/**
* Set the IMAP folder this instance connects to
*
* @param string The folder name/path
* @param string Expected folder type
* @param string Optional folder type if known
*/
public function set_folder($name, $type = null, $type_annotation = null)
{
$this->name = $name;
if (empty($type_annotation)) {
$type_annotation = $this->get_type();
}
$oldtype = $this->type;
list($this->type, $suffix) = explode('.', $type_annotation);
$this->default = $suffix == 'default';
$this->subtype = $this->default ? '' : $suffix;
$this->id = kolab_storage::folder_id($name);
$this->valid = !empty($this->type) && $this->type != 'mail' && (!$type || $this->type == $type);
if (!$this->valid) {
$this->error = $this->imap->get_error_code() < 0 ? kolab_storage::ERROR_IMAP_CONN : kolab_storage::ERROR_INVALID_FOLDER;
}
// reset cached object properties
$this->owner = $this->namespace = $this->resource_uri = $this->info = $this->idata = null;
// get a new cache instance if folder type changed
if (!$this->cache || $this->type != $oldtype)
$this->cache = kolab_storage_cache::factory($this);
else
$this->cache->set_folder($this);
$this->imap->set_folder($this->name);
}
/**
* Returns code of last error
*
* @return int Error code
*/
public function get_error()
{
return $this->error ?: $this->cache->get_error();
}
/**
* Check IMAP connection error state
*/
public function check_error()
{
if (($err_code = $this->imap->get_error_code()) < 0) {
$this->error = kolab_storage::ERROR_IMAP_CONN;
if (($res_code = $this->imap->get_response_code()) !== 0 && in_array($res_code, array(rcube_storage::NOPERM, rcube_storage::READONLY))) {
$this->error = kolab_storage::ERROR_NO_PERMISSION;
}
}
return $this->error;
}
/**
* Compose a unique resource URI for this IMAP folder
*/
public function get_resource_uri()
{
if (!empty($this->resource_uri)) {
return $this->resource_uri;
}
// strip namespace prefix from folder name
$ns = $this->get_namespace();
$nsdata = $this->imap->get_namespace($ns);
if (is_array($nsdata[0]) && strlen($nsdata[0][0]) && strpos($this->name, $nsdata[0][0]) === 0) {
$subpath = substr($this->name, strlen($nsdata[0][0]));
if ($ns == 'other') {
list($user, $suffix) = explode($nsdata[0][1], $subpath, 2);
$subpath = $suffix;
}
}
else {
$subpath = $this->name;
}
// compose fully qualified ressource uri for this instance
$this->resource_uri = 'imap://' . urlencode($this->get_owner(true)) . '@' . $this->imap->options['host'] . '/' . $subpath;
return $this->resource_uri;
}
/**
* Helper method to extract folder UID metadata
*
* @return string Folder's UID
*/
public function get_uid()
{
// UID is defined in folder METADATA
$metakeys = array(kolab_storage::UID_KEY_SHARED, kolab_storage::UID_KEY_CYRUS);
$metadata = $this->get_metadata();
if ($metadata !== null) {
foreach ($metakeys as $key) {
if ($uid = $metadata[$key]) {
return $uid;
}
}
// generate a folder UID and set it to IMAP
$uid = rtrim(chunk_split(md5($this->name . $this->get_owner() . uniqid('-', true)), 12, '-'), '-');
if ($this->set_uid($uid)) {
return $uid;
}
}
$this->check_error();
// create hash from folder name if we can't write the UID metadata
return md5($this->name . $this->get_owner());
}
/**
* Helper method to set an UID value to the given IMAP folder instance
*
* @param string Folder's UID
* @return boolean True on succes, False on failure
*/
public function set_uid($uid)
{
$success = $this->set_metadata(array(kolab_storage::UID_KEY_SHARED => $uid));
$this->check_error();
return $success;
}
/**
* Compose a folder Etag identifier
*/
public function get_ctag()
{
$fdata = $this->get_imap_data();
$this->check_error();
return sprintf('%d-%d-%d', $fdata['UIDVALIDITY'], $fdata['HIGHESTMODSEQ'], $fdata['UIDNEXT']);
}
/**
* Check activation status of this folder
*
* @return boolean True if enabled, false if not
*/
public function is_active()
{
return kolab_storage::folder_is_active($this->name);
}
/**
* Change activation status of this folder
*
* @param boolean The desired subscription status: true = active, false = not active
*
* @return True on success, false on error
*/
public function activate($active)
{
return $active ? kolab_storage::folder_activate($this->name) : kolab_storage::folder_deactivate($this->name);
}
/**
* Check subscription status of this folder
*
* @return boolean True if subscribed, false if not
*/
public function is_subscribed()
{
return kolab_storage::folder_is_subscribed($this->name);
}
/**
* Change subscription status of this folder
*
* @param boolean The desired subscription status: true = subscribed, false = not subscribed
*
* @return True on success, false on error
*/
public function subscribe($subscribed)
{
return $subscribed ? kolab_storage::folder_subscribe($this->name) : kolab_storage::folder_unsubscribe($this->name);
}
/**
* Get number of objects stored in this folder
*
* @param mixed Pseudo-SQL query as list of filter parameter triplets
* or string with object type (e.g. contact, event, todo, journal, note, configuration)
*
* @return integer The number of objects of the given type
* @see self::select()
*/
public function count($query = null)
{
if (!$this->valid) {
return 0;
}
// synchronize cache first
$this->cache->synchronize();
return $this->cache->count($this->_prepare_query($query));
}
/**
* List Kolab objects matching the given query
*
* @param mixed Pseudo-SQL query as list of filter parameter triplets
* or string with object type (e.g. contact, event, todo, journal, note, configuration)
*
* @return array List of Kolab data objects (each represented as hash array)
* @deprecated Use select()
*/
public function get_objects($query = array())
{
return $this->select($query);
}
/**
* Select Kolab objects matching the given query
*
* @param mixed Pseudo-SQL query as list of filter parameter triplets
* or string with object type (e.g. contact, event, todo, journal, note, configuration)
* @param boolean Use fast mode to fetch only minimal set of information
* (no xml fetching and parsing, etc.)
*
* @return array List of Kolab data objects (each represented as hash array)
*/
public function select($query = array(), $fast = false)
{
if (!$this->valid) {
return array();
}
// synchronize caches
$this->cache->synchronize();
// fetch objects from cache
return $this->cache->select($this->_prepare_query($query), false, $fast);
}
/**
* Getter for object UIDs only
*
* @param array Pseudo-SQL query as list of filter parameter triplets
* @return array List of Kolab object UIDs
*/
public function get_uids($query = array())
{
if (!$this->valid) {
return array();
}
// synchronize caches
$this->cache->synchronize();
// fetch UIDs from cache
return $this->cache->select($this->_prepare_query($query), true);
}
/**
* Setter for ORDER BY and LIMIT parameters for cache queries
*
* @param array List of columns to order by
* @param integer Limit result set to this length
* @param integer Offset row
*/
public function set_order_and_limit($sortcols, $length = null, $offset = 0)
{
$this->cache->set_order_by($sortcols);
if ($length !== null) {
$this->cache->set_limit($length, $offset);
}
}
/**
* Helper method to sanitize query arguments
*/
private function _prepare_query($query)
{
// string equals type query
// FIXME: should not be called this way!
if (is_string($query)) {
return $this->cache->has_type_col() && !empty($query) ? array(array('type','=',$query)) : array();
}
foreach ((array)$query as $i => $param) {
if ($param[0] == 'type' && !$this->cache->has_type_col()) {
unset($query[$i]);
}
else if (($param[0] == 'dtstart' || $param[0] == 'dtend' || $param[0] == 'changed')) {
if (is_object($param[2]) && is_a($param[2], 'DateTime'))
$param[2] = $param[2]->format('U');
if (is_numeric($param[2]))
$query[$i][2] = date('Y-m-d H:i:s', $param[2]);
}
}
return $query;
}
/**
* Getter for a single Kolab object identified by its UID
*
* @param string $uid Object UID
*
* @return array The Kolab object represented as hash array
*/
public function get_object($uid)
{
if (!$this->valid || !$uid) {
return false;
}
// synchronize caches
$this->cache->synchronize();
return $this->cache->get_by_uid($uid);
}
/**
* Fetch a Kolab object attachment which is stored in a separate part
* of the mail MIME message that represents the Kolab record.
*
* @param string Object's UID
* @param string The attachment's mime number
* @param string IMAP folder where message is stored;
* If set, that also implies that the given UID is an IMAP UID
* @param bool True to print the part content
* @param resource File pointer to save the message part
* @param boolean Disables charset conversion
*
* @return mixed The attachment content as binary string
*/
public function get_attachment($uid, $part, $mailbox = null, $print = false, $fp = null, $skip_charset_conv = false)
{
if ($this->valid && ($msguid = ($mailbox ? $uid : $this->cache->uid2msguid($uid)))) {
$this->imap->set_folder($mailbox ? $mailbox : $this->name);
if (substr($part, 0, 2) == 'i:') {
// attachment data is stored in XML
if ($object = $this->cache->get($msguid)) {
// load data from XML (attachment content is not stored in cache)
if ($object['_formatobj'] && isset($object['_size'])) {
$object['_attachments'] = array();
$object['_formatobj']->get_attachments($object);
}
foreach ($object['_attachments'] as $attach) {
if ($attach['id'] == $part) {
if ($print) echo $attach['content'];
else if ($fp) fwrite($fp, $attach['content']);
else return $attach['content'];
return true;
}
}
}
}
else {
// return message part from IMAP directly
// TODO: We could improve performance if we cache part's encoding
// without 3rd argument get_message_part() will request BODYSTRUCTURE from IMAP
return $this->imap->get_message_part($msguid, $part, null, $print, $fp, $skip_charset_conv);
}
}
return null;
}
/**
* Fetch the mime message from the storage server and extract
* the Kolab groupware object from it
*
* @param string The IMAP message UID to fetch
* @param string The object type expected (use wildcard '*' to accept all types)
* @param string The folder name where the message is stored
*
* @return mixed Hash array representing the Kolab object, a kolab_format instance or false if not found
*/
public function read_object($msguid, $type = null, $folder = null)
{
if (!$this->valid) {
return false;
}
if (!$type) $type = $this->type;
if (!$folder) $folder = $this->name;
$this->imap->set_folder($folder);
$this->cache->imap_mode(true);
$message = new rcube_message($msguid);
$this->cache->imap_mode(false);
// Message doesn't exist?
if (empty($message->headers)) {
return false;
}
// extract the X-Kolab-Type header from the XML attachment part if missing
if (empty($message->headers->others['x-kolab-type'])) {
foreach ((array)$message->attachments as $part) {
if (strpos($part->mimetype, kolab_format::KTYPE_PREFIX) === 0) {
$message->headers->others['x-kolab-type'] = $part->mimetype;
break;
}
}
}
// fix buggy messages stating the X-Kolab-Type header twice
else if (is_array($message->headers->others['x-kolab-type'])) {
$message->headers->others['x-kolab-type'] = reset($message->headers->others['x-kolab-type']);
}
// no object type header found: abort
if (empty($message->headers->others['x-kolab-type'])) {
rcube::raise_error(array(
'code' => 600,
'type' => 'php',
'file' => __FILE__,
'line' => __LINE__,
'message' => "No X-Kolab-Type information found in message $msguid ($this->name).",
), true);
return false;
}
$object_type = kolab_format::mime2object_type($message->headers->others['x-kolab-type']);
$content_type = kolab_format::KTYPE_PREFIX . $object_type;
// check object type header and abort on mismatch
if ($type != '*' && strpos($object_type, $type) !== 0 && !($object_type == 'distribution-list' && $type == 'contact')) {
return false;
}
$attachments = array();
// get XML part
foreach ((array)$message->attachments as $part) {
if (!$xml && ($part->mimetype == $content_type || preg_match('!application/([a-z.]+\+)?xml!i', $part->mimetype))) {
$xml = $message->get_part_body($part->mime_id, true);
}
else if ($part->filename || $part->content_id) {
$key = $part->content_id ? trim($part->content_id, '<>') : $part->filename;
$size = null;
// Use Content-Disposition 'size' as for the Kolab Format spec.
if (isset($part->d_parameters['size'])) {
$size = $part->d_parameters['size'];
}
// we can trust part size only if it's not encoded
else if ($part->encoding == 'binary' || $part->encoding == '7bit' || $part->encoding == '8bit') {
$size = $part->size;
}
$attachments[$key] = array(
'id' => $part->mime_id,
'name' => $part->filename,
'mimetype' => $part->mimetype,
'size' => $size,
);
}
}
if (!$xml) {
rcube::raise_error(array(
'code' => 600,
'type' => 'php',
'file' => __FILE__,
'line' => __LINE__,
'message' => "Could not find Kolab data part in message $msguid ($this->name).",
), true);
return false;
}
// check kolab format version
$format_version = $message->headers->others['x-kolab-mime-version'];
if (empty($format_version)) {
list($xmltype, $subtype) = explode('.', $object_type);
$xmlhead = substr($xml, 0, 512);
// detect old Kolab 2.0 format
if (strpos($xmlhead, '<' . $xmltype) !== false && strpos($xmlhead, 'xmlns=') === false)
$format_version = '2.0';
else
$format_version = '3.0'; // assume 3.0
}
// get Kolab format handler for the given type
$format = kolab_format::factory($object_type, $format_version);
if (is_a($format, 'PEAR_Error'))
return false;
// load Kolab object from XML part
$format->load($xml);
if ($format->is_valid()) {
$object = $format->to_array(array('_attachments' => $attachments));
$object['_type'] = $object_type;
$object['_msguid'] = $msguid;
$object['_mailbox'] = $this->name;
$object['_formatobj'] = $format;
$object['_size'] = strlen($xml);
return $object;
}
else {
// try to extract object UID from XML block
if (preg_match('!<uid>(.+)</uid>!Uims', $xml, $m))
$msgadd = " UID = " . trim(strip_tags($m[1]));
rcube::raise_error(array(
'code' => 600,
'type' => 'php',
'file' => __FILE__,
'line' => __LINE__,
'message' => "Could not parse Kolab object data in message $msguid ($this->name)." . $msgadd,
), true);
self::save_user_xml("$msguid.xml", $xml);
}
return false;
}
/**
* Save an object in this folder.
*
* @param array $object The array that holds the data of the object.
* @param string $type The type of the kolab object.
* @param string $uid The UID of the old object if it existed before
*
* @return mixed False on error or IMAP message UID on success
*/
public function save(&$object, $type = null, $uid = null)
{
if (!$this->valid && empty($object)) {
return false;
}
if (!$type)
$type = $this->type;
// copy attachments from old message
$copyfrom = $object['_copyfrom'] ?: $object['_msguid'];
if (!empty($copyfrom) && ($old = $this->cache->get($copyfrom, $type, $object['_mailbox']))) {
foreach ((array)$old['_attachments'] as $key => $att) {
if (!isset($object['_attachments'][$key])) {
$object['_attachments'][$key] = $old['_attachments'][$key];
}
// unset deleted attachment entries
if ($object['_attachments'][$key] == false) {
unset($object['_attachments'][$key]);
}
// load photo.attachment from old Kolab2 format to be directly embedded in xcard block
else if ($type == 'contact' && ($key == 'photo.attachment' || $key == 'kolab-picture.png') && $att['id']) {
if (!isset($object['photo']))
$object['photo'] = $this->get_attachment($copyfrom, $att['id'], $object['_mailbox']);
unset($object['_attachments'][$key]);
}
}
}
// save contact photo to attachment for Kolab2 format
if (kolab_storage::$version == '2.0' && $object['photo']) {
$attkey = 'kolab-picture.png'; // this file name is hard-coded in libkolab/kolabformatV2/contact.cpp
$object['_attachments'][$attkey] = array(
'mimetype'=> rcube_mime::image_content_type($object['photo']),
'content' => preg_match('![^a-z0-9/=+-]!i', $object['photo']) ? $object['photo'] : base64_decode($object['photo']),
);
}
// process attachments
if (is_array($object['_attachments'])) {
$numatt = count($object['_attachments']);
foreach ($object['_attachments'] as $key => $attachment) {
// FIXME: kolab_storage and Roundcube attachment hooks use different fields!
if (empty($attachment['content']) && !empty($attachment['data'])) {
$attachment['content'] = $attachment['data'];
unset($attachment['data'], $object['_attachments'][$key]['data']);
}
// make sure size is set, so object saved in cache contains this info
if (!isset($attachment['size'])) {
if (!empty($attachment['content'])) {
if (is_resource($attachment['content'])) {
// this need to be a seekable resource, otherwise
// fstat() failes and we're unable to determine size
// here nor in rcube_imap_generic before IMAP APPEND
$stat = fstat($attachment['content']);
$attachment['size'] = $stat ? $stat['size'] : 0;
}
else {
$attachment['size'] = strlen($attachment['content']);
}
}
else if (!empty($attachment['path'])) {
$attachment['size'] = filesize($attachment['path']);
}
$object['_attachments'][$key] = $attachment;
}
// generate unique keys (used as content-id) for attachments
if (is_numeric($key) && $key < $numatt) {
// derrive content-id from attachment file name
$ext = preg_match('/(\.[a-z0-9]{1,6})$/i', $attachment['name'], $m) ? $m[1] : null;
$basename = preg_replace('/[^a-z0-9_.-]/i', '', basename($attachment['name'], $ext)); // to 7bit ascii
if (!$basename) $basename = 'noname';
$cid = $basename . '.' . microtime(true) . $key . $ext;
$object['_attachments'][$cid] = $attachment;
unset($object['_attachments'][$key]);
}
}
}
// save recurrence exceptions as individual objects due to lack of support in Kolab v2 format
if (kolab_storage::$version == '2.0' && $object['recurrence']['EXCEPTIONS']) {
$this->save_recurrence_exceptions($object, $type);
}
// check IMAP BINARY extension support for 'file' objects
// allow configuration to workaround bug in Cyrus < 2.4.17
$rcmail = rcube::get_instance();
$binary = $type == 'file' && !$rcmail->config->get('kolab_binary_disable') && $this->imap->get_capability('BINARY');
// generate and save object message
if ($raw_msg = $this->build_message($object, $type, $binary, $body_file)) {
// resolve old msguid before saving
if ($uid && empty($object['_msguid']) && ($msguid = $this->cache->uid2msguid($uid))) {
$object['_msguid'] = $msguid;
$object['_mailbox'] = $this->name;
}
$result = $this->imap->save_message($this->name, $raw_msg, null, false, null, null, $binary);
// update cache with new UID
if ($result) {
$old_uid = $object['_msguid'];
$object['_msguid'] = $result;
$object['_mailbox'] = $this->name;
if ($old_uid) {
// delete old message
$this->cache->imap_mode(true);
$this->imap->delete_message($old_uid, $object['_mailbox']);
$this->cache->imap_mode(false);
}
// insert/update message in cache
$this->cache->save($result, $object, $old_uid);
}
// remove temp file
if ($body_file) {
@unlink($body_file);
}
}
return $result;
}
/**
* Save recurrence exceptions as individual objects.
* The Kolab v2 format doesn't allow us to save fully embedded exception objects.
*
* @param array Hash array with event properties
* @param string Object type
*/
private function save_recurrence_exceptions(&$object, $type = null)
{
if ($object['recurrence']['EXCEPTIONS']) {
$exdates = array();
foreach ((array)$object['recurrence']['EXDATE'] as $exdate) {
$key = is_a($exdate, 'DateTime') ? $exdate->format('Y-m-d') : strval($exdate);
$exdates[$key] = 1;
}
// save every exception as individual object
foreach((array)$object['recurrence']['EXCEPTIONS'] as $exception) {
$exception['uid'] = self::recurrence_exception_uid($object['uid'], $exception['start']->format('Ymd'));
$exception['sequence'] = $object['sequence'] + 1;
if ($exception['thisandfuture']) {
$exception['recurrence'] = $object['recurrence'];
// adjust the recurrence duration of the exception
if ($object['recurrence']['COUNT']) {
$recurrence = new kolab_date_recurrence($object['_formatobj']);
if ($end = $recurrence->end()) {
unset($exception['recurrence']['COUNT']);
$exception['recurrence']['UNTIL'] = $end;
}
}
// set UNTIL date if we have a thisandfuture exception
$untildate = clone $exception['start'];
$untildate->sub(new DateInterval('P1D'));
$object['recurrence']['UNTIL'] = $untildate;
unset($object['recurrence']['COUNT']);
}
else {
if (!$exdates[$exception['start']->format('Y-m-d')])
$object['recurrence']['EXDATE'][] = clone $exception['start'];
unset($exception['recurrence']);
}
unset($exception['recurrence']['EXCEPTIONS'], $exception['_formatobj'], $exception['_msguid']);
$this->save($exception, $type, $exception['uid']);
}
unset($object['recurrence']['EXCEPTIONS']);
}
}
/**
* Generate an object UID with the given recurrence-ID in a way that it is
* unique (the original UID is not a substring) but still recoverable.
*/
private static function recurrence_exception_uid($uid, $recurrence_id)
{
$offset = -2;
return substr($uid, 0, $offset) . '-' . $recurrence_id . '-' . substr($uid, $offset);
}
/**
* Delete the specified object from this folder.
*
* @param mixed $object The Kolab object to delete or object UID
* @param boolean $expunge Should the folder be expunged?
*
* @return boolean True if successful, false on error
*/
public function delete($object, $expunge = true)
{
if (!$this->valid) {
return false;
}
$msguid = is_array($object) ? $object['_msguid'] : $this->cache->uid2msguid($object);
$success = false;
$this->cache->imap_mode(true);
if ($msguid && $expunge) {
$success = $this->imap->delete_message($msguid, $this->name);
}
else if ($msguid) {
$success = $this->imap->set_flag($msguid, 'DELETED', $this->name);
}
$this->cache->imap_mode(false);
if ($success) {
$this->cache->set($msguid, false);
}
return $success;
}
/**
*
*/
public function delete_all()
{
if (!$this->valid) {
return false;
}
$this->cache->purge();
$this->cache->imap_mode(true);
$result = $this->imap->clear_folder($this->name);
$this->cache->imap_mode(false);
return $result;
}
/**
* Restore a previously deleted object
*
* @param string Object UID
* @return mixed Message UID on success, false on error
*/
public function undelete($uid)
{
if (!$this->valid) {
return false;
}
if ($msguid = $this->cache->uid2msguid($uid, true)) {
$this->cache->imap_mode(true);
$result = $this->imap->set_flag($msguid, 'UNDELETED', $this->name);
$this->cache->imap_mode(false);
if ($result) {
return $msguid;
}
}
return false;
}
/**
* Move a Kolab object message to another IMAP folder
*
* @param string Object UID
* @param string IMAP folder to move object to
* @return boolean True on success, false on failure
*/
public function move($uid, $target_folder)
{
if (!$this->valid) {
return false;
}
if (is_string($target_folder))
$target_folder = kolab_storage::get_folder($target_folder);
if ($msguid = $this->cache->uid2msguid($uid)) {
$this->cache->imap_mode(true);
$result = $this->imap->move_message($msguid, $target_folder->name, $this->name);
$this->cache->imap_mode(false);
if ($result) {
$new_uid = ($copyuid = $this->imap->conn->data['COPYUID']) ? $copyuid[1] : null;
$this->cache->move($msguid, $uid, $target_folder, $new_uid);
return true;
}
else {
rcube::raise_error(array(
'code' => 600, 'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Failed to move message $msguid to $target_folder: " . $this->imap->get_error_str(),
), true);
}
}
return false;
}
/**
* Creates source of the configuration object message
*
* @param array $object The array that holds the data of the object.
* @param string $type The type of the kolab object.
* @param bool $binary Enables use of binary encoding of attachment(s)
* @param string $body_file Reference to filename of message body
*
* @return mixed Message as string or array with two elements
* (one for message file path, second for message headers)
*/
private function build_message(&$object, $type, $binary, &$body_file)
{
// load old object to preserve data we don't understand/process
if (is_object($object['_formatobj']))
$format = $object['_formatobj'];
else if ($object['_msguid'] && ($old = $this->cache->get($object['_msguid'], $type, $object['_mailbox'])))
$format = $old['_formatobj'];
// create new kolab_format instance
if (!$format)
$format = kolab_format::factory($type, kolab_storage::$version);
if (PEAR::isError($format))
return false;
$format->set($object);
$xml = $format->write(kolab_storage::$version);
$object['uid'] = $format->uid; // read UID from format
$object['_formatobj'] = $format;
if (empty($xml) || !$format->is_valid() || empty($object['uid'])) {
return false;
}
$mime = new Mail_mime("\r\n");
$rcmail = rcube::get_instance();
$headers = array();
$files = array();
$part_id = 1;
$encoding = $binary ? 'binary' : 'base64';
if ($user_email = $rcmail->get_user_email()) {
$headers['From'] = $user_email;
$headers['To'] = $user_email;
}
$headers['Date'] = date('r');
$headers['X-Kolab-Type'] = kolab_format::KTYPE_PREFIX . $type;
$headers['X-Kolab-Mime-Version'] = kolab_storage::$version;
$headers['Subject'] = $object['uid'];
// $headers['Message-ID'] = $rcmail->gen_message_id();
$headers['User-Agent'] = $rcmail->config->get('useragent');
// Check if we have enough memory to handle the message in it
// It's faster than using files, so we'll do this if we only can
if (!empty($object['_attachments']) && ($mem_limit = parse_bytes(ini_get('memory_limit'))) > 0) {
$memory = function_exists('memory_get_usage') ? memory_get_usage() : 16*1024*1024; // safe value: 16MB
foreach ($object['_attachments'] as $attachment) {
$memory += $attachment['size'];
}
// 1.33 is for base64, we need at least 4x more memory than the message size
if ($memory * ($binary ? 1 : 1.33) * 4 > $mem_limit) {
$marker = '%%%~~~' . md5(microtime(true) . $memory) . '~~~%%%';
$is_file = true;
$temp_dir = unslashify($rcmail->config->get('temp_dir'));
$mime->setParam('delay_file_io', true);
}
}
$mime->headers($headers);
$mime->setTXTBody("This is a Kolab Groupware object. "
. "To view this object you will need an email client that understands the Kolab Groupware format. "
. "For a list of such email clients please visit http://www.kolab.org/\n\n");
$ctype = kolab_storage::$version == '2.0' ? $format->CTYPEv2 : $format->CTYPE;
// Convert new lines to \r\n, to wrokaround "NO Message contains bare newlines"
// when APPENDing from temp file
$xml = preg_replace('/\r?\n/', "\r\n", $xml);
$mime->addAttachment($xml, // file
$ctype, // content-type
'kolab.xml', // filename
false, // is_file
'8bit', // encoding
'attachment', // disposition
RCUBE_CHARSET // charset
);
$part_id++;
// save object attachments as separate parts
foreach ((array)$object['_attachments'] as $key => $att) {
if (empty($att['content']) && !empty($att['id'])) {
// @TODO: use IMAP CATENATE to skip attachment fetch+push operation
$msguid = $object['_copyfrom'] ?: ($object['_msguid'] ?: $object['uid']);
if ($is_file) {
$att['path'] = tempnam($temp_dir, 'rcmAttmnt');
if (($fp = fopen($att['path'], 'w')) && $this->get_attachment($msguid, $att['id'], $object['_mailbox'], false, $fp, true)) {
fclose($fp);
}
else {
return false;
}
}
else {
$att['content'] = $this->get_attachment($msguid, $att['id'], $object['_mailbox'], false, null, true);
}
}
$headers = array('Content-ID' => Mail_mimePart::encodeHeader('Content-ID', '<' . $key . '>', RCUBE_CHARSET, 'quoted-printable'));
$name = !empty($att['name']) ? $att['name'] : $key;
// To store binary files we can use faster method
// without writting full message content to a temporary file but
// directly to IMAP, see rcube_imap_generic::append().
// I.e. use file handles where possible
if (!empty($att['path'])) {
if ($is_file && $binary) {
$files[] = fopen($att['path'], 'r');
$mime->addAttachment($marker, $att['mimetype'], $name, false, $encoding, 'attachment', '', '', '', null, null, '', RCUBE_CHARSET, $headers);
}
else {
$mime->addAttachment($att['path'], $att['mimetype'], $name, true, $encoding, 'attachment', '', '', '', null, null, '', RCUBE_CHARSET, $headers);
}
}
else {
if (is_resource($att['content']) && $is_file && $binary) {
$files[] = $att['content'];
$mime->addAttachment($marker, $att['mimetype'], $name, false, $encoding, 'attachment', '', '', '', null, null, '', RCUBE_CHARSET, $headers);
}
else {
if (is_resource($att['content'])) {
@rewind($att['content']);
$att['content'] = stream_get_contents($att['content']);
}
$mime->addAttachment($att['content'], $att['mimetype'], $name, false, $encoding, 'attachment', '', '', '', null, null, '', RCUBE_CHARSET, $headers);
}
}
$object['_attachments'][$key]['id'] = ++$part_id;
}
if (!$is_file || !empty($files)) {
$message = $mime->getMessage();
}
// parse message and build message array with
// attachment file pointers in place of file markers
if (!empty($files)) {
$message = explode($marker, $message);
$tmp = array();
foreach ($message as $msg_part) {
$tmp[] = $msg_part;
if ($file = array_shift($files)) {
$tmp[] = $file;
}
}
$message = $tmp;
}
// write complete message body into temp file
else if ($is_file) {
// use common temp dir
$body_file = tempnam($temp_dir, 'rcmMsg');
if (PEAR::isError($mime_result = $mime->saveMessageBody($body_file))) {
rcube::raise_error(array('code' => 650, 'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Could not create message: ".$mime_result->getMessage()),
true, false);
return false;
}
$message = array(trim($mime->txtHeaders()) . "\r\n\r\n", fopen($body_file, 'r'));
}
return $message;
}
/**
* Triggers any required updates after changes within the
* folder. This is currently only required for handling free/busy
* information with Kolab.
*
* @return boolean|PEAR_Error True if successfull.
*/
public function trigger()
{
$owner = $this->get_owner();
$result = false;
switch($this->type) {
case 'event':
if ($this->get_namespace() == 'personal') {
$result = $this->trigger_url(
sprintf('%s/trigger/%s/%s.pfb',
kolab_storage::get_freebusy_server(),
urlencode($owner),
urlencode($this->imap->mod_folder($this->name))
),
$this->imap->options['user'],
$this->imap->options['password']
);
}
break;
default:
return true;
}
if ($result && is_object($result) && is_a($result, 'PEAR_Error')) {
return PEAR::raiseError(sprintf("Failed triggering folder %s. Error was: %s",
$this->name, $result->getMessage()));
}
return $result;
}
/**
* Triggers a URL.
*
* @param string $url The URL to be triggered.
* @param string $auth_user Username to authenticate with
* @param string $auth_passwd Password for basic auth
* @return boolean|PEAR_Error True if successfull.
*/
private function trigger_url($url, $auth_user = null, $auth_passwd = null)
{
try {
$request = libkolab::http_request($url);
// set authentication credentials
if ($auth_user && $auth_passwd)
$request->setAuth($auth_user, $auth_passwd);
$result = $request->send();
// rcube::write_log('trigger', $result->getBody());
}
catch (Exception $e) {
return PEAR::raiseError($e->getMessage());
}
return true;
}
/**
* Log content to a file in per_user_loggin dir if configured
*/
private static function save_user_xml($filename, $content)
{
$rcmail = rcube::get_instance();
if ($rcmail->config->get('kolab_format_error_log')) {
$log_dir = $rcmail->config->get('log_dir', RCUBE_INSTALL_PATH . 'logs');
$user_name = $rcmail->get_user_name();
$log_dir = $log_dir . '/' . $user_name;
if (!empty($user_name) && is_writable($log_dir)) {
file_put_contents("$log_dir/$filename", $content);
}
}
}
}
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