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	diff --git a/composer.json b/composer.json
	index 053ce31..25546d2 100644
	--- a/composer.json
	+++ b/composer.json
	@@ -1,29 +1,28 @@
	{
	"name": "kolab/irony",
	"description": "iRony - The Kolab WebDAV/CalDAV/CardDAV Server",
	"license": "AGPL-3.0",
	"version": "0.4-dev",
	"repositories": [
	{
	"type": "pear",
	"url": "http://pear.php.net/"
	},
	{
	"type": "vcs",
	"url": "git://git.kolab.org/git/pear/Net_LDAP3"
	}
	],
	"require": {
	"php": ">=5.4.1",
	"sabre/dav" : "~2.1.0"
	},
	"require-dev": {
	"pear/mail_mime": ">=1.8.9",
	"pear/mail_mime-decode": ">=1.5.5",
	- "pear/http_request2": ">=2.1.1",
	"pear-pear.php.net/net_idna2": ">=0.1.1",
	"pear-pear.php.net/net_ldap2": ">=2.0.12",
	"kolab/Net_LDAP3": "dev-master"
	},
	"minimum-stability": "dev"
	}
	diff --git a/lib/Kolab/CalDAV/Plugin.php b/lib/Kolab/CalDAV/Plugin.php
	index 815f37b..3f71070 100644
	--- a/lib/Kolab/CalDAV/Plugin.php
	+++ b/lib/Kolab/CalDAV/Plugin.php
	@@ -1,239 +1,171 @@
	<?php

	/**
	* Extended CalDAV plugin for the Kolab DAV server
	*
	* @author Thomas Bruederli <bruederli@kolabsys.com>
	*
	* Copyright (C) 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/>.
	*/

	namespace Kolab\CalDAV;

	use Sabre\DAV;
	use Sabre\CalDAV;
	use Sabre\VObject;
	use Kolab\DAV\Auth\HTTPBasic;


	/**
	* Extended CalDAV plugin to tweak data validation
	*/
	class Plugin extends CalDAV\Plugin
	{
	// make already parsed text/calednar blocks available for later use
	public static $parsed_vcalendar;
	public static $parsed_vevent;

	// allow the backend to force a redirect Location
	public static $redirect_basename;

	/**
	* Initializes the plugin
	*
	* @param DAV\Server $server
	* @return void
	*/
	public function initialize(DAV\Server $server)
	{
	parent::initialize($server);

	$server->on('afterCreateFile', array($this, 'afterWriteContent'));
	$server->on('afterWriteContent', array($this, 'afterWriteContent'));
	}

	/**
	* Inject some additional HTTP response headers
	*/
	public function afterWriteContent($uri, $node)
	{
	// send Location: header to corrected URI
	if (self::$redirect_basename) {
	$path = explode('/', $uri);
	array_pop($path);
	array_push($path, self::$redirect_basename);
	$this->server->httpResponse->setHeader('Location', $this->server->getBaseUri() . join('/', array_map('urlencode', $path)));
	self::$redirect_basename = null;
	}
	}

	/**
	* Checks if the submitted iCalendar data is in fact, valid.
	*
	* An exception is thrown if it's not.
	*
	* @param resource\|string $data
	* @param string $path
	* @return void
	*/
	protected function validateICalendar(&$data, $path)
	{
	// If it's a stream, we convert it to a string first.
	if (is_resource($data)) {
	$data = stream_get_contents($data);
	}

	// Converting the data to unicode, if needed.
	$data = DAV\StringUtil::ensureUTF8($data);

	try {
	// modification: Set options to be more tolerant when parsing extended or invalid properties
	$vobj = VObject\Reader::read($data, VObject\Reader::OPTION_FORGIVING \| VObject\Reader::OPTION_IGNORE_INVALID_LINES);

	// keep the parsed object in memory for later processing
	if ($vobj->name == 'VCALENDAR') {
	self::$parsed_vcalendar = $vobj;
	foreach ($vobj->getBaseComponents() as $vevent) {
	if ($vevent->name == 'VEVENT' \|\| $vevent->name == 'VTODO') {
	self::$parsed_vevent = $vevent;
	break;
	}
	}
	}
	}
	catch (VObject\ParseException $e) {
	throw new DAV\Exception\UnsupportedMediaType('This resource requires valid iCalendar 2.0 data. Parse error: ' . $e->getMessage());
	}

	if ($vobj->name !== 'VCALENDAR') {
	throw new DAV\Exception\UnsupportedMediaType('This collection can only support iCalendar objects.');
	}

	// Get the Supported Components for the target calendar
	list($parentPath,$object) = DAV\URLUtil::splitPath($path);
	$calendarProperties = $this->server->getProperties($parentPath,array('{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set'));
	$supportedComponents = $calendarProperties['{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set']->getValue();

	$foundType = null;
	$foundUID = null;
	foreach($vobj->getComponents() as $component) {
	switch($component->name) {
	case 'VTIMEZONE':
	continue 2;

	case 'VEVENT':
	case 'VTODO':
	case 'VJOURNAL':
	if (is_null($foundType)) {
	$foundType = $component->name;
	if (!in_array($foundType, $supportedComponents)) {
	throw new CalDAV\Exception\InvalidComponentType('This calendar only supports ' . implode(', ', $supportedComponents) . '. We found a ' . $foundType);
	}
	if (!isset($component->UID)) {
	throw new DAV\Exception\BadRequest('Every ' . $component->name . ' component must have an UID');
	}
	$foundUID = (string)$component->UID;
	} else {
	if ($foundType !== $component->name) {
	throw new DAV\Exception\BadRequest('A calendar object must only contain 1 component. We found a ' . $component->name . ' as well as a ' . $foundType);
	}
	if ($foundUID !== (string)$component->UID) {
	throw new DAV\Exception\BadRequest('Every ' . $component->name . ' in this object must have identical UIDs');
	}
	}
	break;

	default:
	throw new DAV\Exception\BadRequest('You are not allowed to create components of type: ' . $component->name . ' here');

	}
	}
	if (!$foundType)
	throw new DAV\Exception\BadRequest('iCalendar object must contain at least 1 of VEVENT, VTODO or VJOURNAL');
	}

	/**
	* Returns a list of features for the DAV: HTTP header.
	* Including 'calendar-schedule' to enable scheduling support in Thunderbird Lightning.
	*
	* @return array
	*/
	public function getFeatures()
	{
	$features = parent::getFeatures();
	$features[] = 'calendar-schedule';
	return $features;
	}

	- /**
	- * Returns free-busy information for a specific address. The returned
	- * data is an array containing the following properties:
	- *
	- * calendar-data : A VFREEBUSY VObject
	- * request-status : an iTip status code.
	- * href: The principal's email address, as requested
	- *
	- * @param string $email address
	- * @param \DateTime $start
	- * @param \DateTime $end
	- * @param VObject\Component $request
	- * @return array
	- */
	- protected function getFreeBusyForEmail($email, \DateTime $start, \DateTime $end, VObject\Component $request)
	- {
	- console(__METHOD__, $email, $start, $end);
	-
	- $email = preg_replace('/^mailto:/', '', $email);
	-
	- // pass-through the pre-generatd free/busy feed from Kolab's free/busy service
	- if ($fburl = \kolab_storage::get_freebusy_url($email)) {
	- // use PEAR::HTTP_Request2 for data fetching
	- // @include_once('HTTP/Request2.php');
	-
	- try {
	- $rcube = \rcube::get_instance();
	- $request = new \HTTP_Request2($fburl);
	- $request->setConfig(array(
	- 'store_body' => true,
	- 'follow_redirects' => true,
	- 'ssl_verify_peer' => $rcube->config->get('kolab_ssl_verify_peer', true),
	- ));
	-
	- $response = $request->send();
	-
	- // authentication required
	- if ($response->getStatus() == 401) {
	- $request->setAuth(HTTPBasic::$current_user, HTTPBasic::$current_pass);
	- $response = $request->send();
	- }
	-
	- // success!
	- if ($response->getStatus() == 200) {
	- $vcalendar = VObject\Reader::read($response->getBody(), VObject\Reader::OPTION_FORGIVING \| VObject\Reader::OPTION_IGNORE_INVALID_LINES);
	- return array(
	- 'calendar-data' => $vcalendar,
	- 'request-status' => '2.0;Success',
	- 'href' => 'mailto:' . $email,
	- );
	- }
	- }
	- catch (\Exception $e) {
	- // log failures
	- \rcube::raise_error($e, true, false);
	- }
	- }
	- else {
	- // generate free/busy data from this user's calendars
	- return parent::getFreeBusyForEmail($email, $start, $end, $request);
	- }
	-
	- // return "not found"
	- return array(
	- 'request-status' => '3.7;Could not find principal',
	- 'href' => 'mailto:' . $email,
	- );
	- }
	}
	\ No newline at end of file
	diff --git a/lib/Kolab/CalDAV/SchedulePlugin.php b/lib/Kolab/CalDAV/SchedulePlugin.php
	new file mode 100644
	index 0000000..6ae5151
	--- /dev/null
	+++ b/lib/Kolab/CalDAV/SchedulePlugin.php
	@@ -0,0 +1,100 @@
	+<?php
	+
	+/**
	+ * Extended CalDAV Schedule plugin for the Kolab DAV server
	+ *
	+ * @author Thomas Bruederli <bruederli@kolabsys.com>
	+ *
	+ * Copyright (C) 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/>.
	+ */
	+
	+namespace Kolab\CalDAV;
	+
	+use Sabre\DAV;
	+use Sabre\CalDAV;
	+use Sabre\VObject;
	+use Sabre\HTTP;
	+
	+/**
	+ * Extended CalDAV Schedule plugin
	+ */
	+class SchedulePlugin extends CalDAV\Schedule\Plugin
	+{
	+ /**
	+ * Returns free-busy information for a specific address. The returned
	+ * data is an array containing the following properties:
	+ *
	+ * calendar-data : A VFREEBUSY VObject
	+ * request-status : an iTip status code.
	+ * href: The principal's email address, as requested
	+ *
	+ * @param string $email address
	+ * @param \DateTime $start
	+ * @param \DateTime $end
	+ * @param VObject\Component $request
	+ * @return array
	+ */
	+ protected function getFreeBusyForEmail($email, \DateTime $start, \DateTime $end, VObject\Component $request)
	+ {
	+ console(__METHOD__, $email, $start, $end);
	+
	+ $email = preg_replace('!^mailto:!', '', $email);
	+
	+ // pass-through the pre-generatd free/busy feed from Kolab's free/busy service
	+ if ($fburl = \kolab_storage::get_freebusy_url($email)) {
	+ try {
	+ $rcube = \rcube::get_instance();
	+ $client = new HTTP\Client();
	+ $client->addCurlSetting(CURLOPT_SSL_VERIFYPEER, $rcube->config->get('kolab_ssl_verify_peer', true));
	+
	+ // authentication required
	+ $client->on('error:401', function($request, $response, &$retry, $retryCount) {
	+ if ($retryCount <= 1) {
	+ // We're only going to retry exactly once.
	+ $request->setHeader('Authorization', 'Basic ' . base64_encode(HTTPBasic::$current_user . ':' . HTTPBasic::$current_pass));
	+ $retry = true;
	+ }
	+ });
	+
	+ $response = $client->send(new HTTP\Request('GET', $fburl));
	+
	+ // success!
	+ if ($response->getStatus() == 200) {
	+ $vcalendar = VObject\Reader::read($response->getBodyAsString(), VObject\Reader::OPTION_FORGIVING \| VObject\Reader::OPTION_IGNORE_INVALID_LINES);
	+ return array(
	+ 'calendar-data' => $vcalendar,
	+ 'request-status' => '2.0;Success',
	+ 'href' => 'mailto:' . $email,
	+ );
	+ }
	+ }
	+ catch (\Exception $e) {
	+ // log failures
	+ \rcube::raise_error($e, true, false);
	+ }
	+ }
	+ else {
	+ // generate free/busy data from this user's calendars
	+ return parent::getFreeBusyForEmail($email, $start, $end, $request);
	+ }
	+
	+ // return "not found"
	+ return array(
	+ 'request-status' => '3.7;Could not find principal',
	+ 'href' => 'mailto:' . $email,
	+ );
	+ }
	+}
	\ No newline at end of file
	diff --git a/lib/Kolab/CalDAV/UserCalendars.php b/lib/Kolab/CalDAV/UserCalendars.php
	index dcd2aff..3573baa 100644
	--- a/lib/Kolab/CalDAV/UserCalendars.php
	+++ b/lib/Kolab/CalDAV/UserCalendars.php
	@@ -1,166 +1,167 @@
	<?php

	/**
	* SabreDAV UserCalendars derived class for the Kolab.
	*
	* @author Thomas Bruederli <bruederli@kolabsys.com>
	*
	* Copyright (C) 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/>.
	*/

	namespace Kolab\CalDAV;

	use Sabre\DAV;
	use Sabre\DAVACL;
	use Sabre\CalDAV\Backend;
	use Sabre\CalDAV\Schedule;
	use Kolab\CalDAV\Calendar;

	/**
	* The UserCalenders class contains all calendars associated to one user
	*
	*/
	class UserCalendars extends \Sabre\CalDAV\UserCalendars implements DAV\IExtendedCollection, DAVACL\IACL
	{
	private $outbox;

	/**
	* Returns a list of calendars
	*
	* @return array
	*/
	public function getChildren()
	{
	$calendars = $this->caldavBackend->getCalendarsForUser($this->principalInfo['uri']);
	$objs = array();
	foreach ($calendars as $calendar) {
	// TODO: (later) add sharing support by implenting this all
	if ($this->caldavBackend instanceof Backend\SharingSupport) {
	if (isset($calendar['{http://calendarserver.org/ns/}shared-url'])) {
	$objs[] = new SharedCalendar($this->caldavBackend, $calendar);
	}
	else {
	$objs[] = new ShareableCalendar($this->caldavBackend, $calendar);
	}
	}
	else {
	$objs[] = new Calendar($this->caldavBackend, $calendar);
	}
	}

	// add support for scheduling AKA free/busy
	+ // TODO: remove when CalendarBackend implements SchedulingSupport
	$objs[] = new Schedule\Outbox($this->principalInfo['uri']);

	// TODO: add notification support (check with clients first, if anybody supports it)
	if ($this->caldavBackend instanceof Backend\NotificationSupport) {
	$objs[] = new Notifications\Collection($this->caldavBackend, $this->principalInfo['uri']);
	}

	return $objs;
	}

	/**
	* Returns a single calendar, by name
	*
	* @param string $name
	* @return Calendar
	*/
	public function getChild($name)
	{
	if ($name == 'outbox') {
	return new Schedule\Outbox($this->principalInfo['uri']);
	}
	if ($calendar = $this->caldavBackend->getCalendarByName($name)) {
	$calendar['principaluri'] = $this->principalInfo['uri'];
	return new Calendar($this->caldavBackend, $calendar);
	}

	throw new DAV\Exception\NotFound('Calendar with name \'' . $name . '\' could not be found');
	}

	/**
	* Checks if a calendar exists.
	*
	* @param string $name
	* @return bool
	*/
	public function childExists($name)
	{
	if ($this->caldavBackend->getCalendarByName($name)) {
	return true;
	}
	return false;
	}

	/**
	* Returns a list of ACE's for this node.
	*
	* Each ACE has the following properties:
	* - 'privilege', a string such as {DAV:}read or {DAV:}write. These are currently the only supported privileges
	* - 'principal', a url to the principal who owns the node
	* - 'protected' (optional), indicating that this ACE is not allowed to be updated.
	*
	* @return array
	*/
	public function getACL()
	{
	// define rights for the user's calendar root (which is in fact INBOX)
	return array(
	array(
	'privilege' => '{DAV:}read',
	'principal' => $this->principalInfo['uri'],
	'protected' => true,
	),
	array(
	'privilege' => '{DAV:}write',
	'principal' => $this->principalInfo['uri'],
	'protected' => true,
	),
	/* TODO: implement sharing support
	array(
	'privilege' => '{DAV:}read',
	'principal' => $this->principalInfo['uri'] . '/calendar-proxy-write',
	'protected' => true,
	),
	array(
	'privilege' => '{DAV:}write',
	'principal' => $this->principalInfo['uri'] . '/calendar-proxy-write',
	'protected' => true,
	),
	array(
	'privilege' => '{DAV:}read',
	'principal' => $this->principalInfo['uri'] . '/calendar-proxy-read',
	'protected' => true,
	),
	*/
	);
	}

	/**
	* Updates the ACL
	*
	* This method will receive a list of new ACE's.
	*
	* @param array $acl
	* @return void
	*/
	public function setACL(array $acl)
	{
	// TODO: implement this
	throw new DAV\Exception\MethodNotAllowed('Changing ACL is not yet supported');
	}

	}
	diff --git a/lib/Kolab/Utils/DAVLogger.php b/lib/Kolab/Utils/DAVLogger.php
	index 94a39ba..6e2f608 100644
	--- a/lib/Kolab/Utils/DAVLogger.php
	+++ b/lib/Kolab/Utils/DAVLogger.php
	@@ -1,195 +1,194 @@
	<?php

	/**
	* Utility class logging DAV requests
	*
	* @author Thomas Bruederli <bruederli@kolabsys.com>
	*
	* Copyright (C) 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/>.
	*/

	namespace Kolab\Utils;

	use \rcube;
	use Sabre\DAV;
	use Kolab\DAV\Auth\HTTPBasic;


	/**
	* Utility class to log debug information about processed DAV requests
	*/
	class DAVLogger extends DAV\ServerPlugin
	{
	const CONSOLE = 1;
	const HTTP_REQUEST = 2;
	const HTTP_RESPONSE = 4;

	private $rcube;
	private $server;
	private $method;
	private $loglevel;


	/**
	* Default constructor
	*/
	public function __construct($level = 1)
	{
	$this->rcube = rcube::get_instance();
	$this->loglevel = $level;
	}

	/**
	* This initializes the plugin.
	* This method should set up the required event subscriptions.
	*
	* @param Server $server
	*/
	public function initialize(DAV\Server $server)
	{
	$this->server = $server;

	$server->on('beforeMethod', array($this, '_beforeMethod'), 15);
	$server->on('exception', array($this, '_exception'));
	$server->on('exit', array($this, '_exit'));

	// replace $server->httpResponse with a derived class that can do logging
	$server->httpResponse = new HTTPResponse();
	}

	/**
	* Handler for 'beforeMethod' events
	*/
	- public function _beforeMethod($method, $uri)
	+ public function _beforeMethod($request, $response)
	{
	- $this->method = $method;
	+ $this->method = $request->getMethod();

	// turn on per-user http logging if the destination file exists
	if ($this->loglevel < 2 && $this->rcube->config->get('kolabdav_user_debug', false)
	&& ($log_dir = $this->user_log_dir()) && file_exists($log_dir . '/httpraw')) {
	$this->loglevel \|= (self::HTTP_REQUEST \| self::HTTP_RESPONSE);
	}

	// log full HTTP request data
	if ($this->loglevel & self::HTTP_REQUEST) {
	- $request = $this->server->httpRequest;
	- $content_type = $request->getHeader('CONTENT_TYPE');
	+ $content_type = $request->getHeader('Content-Type');
	if (strpos($content_type, 'text/') === 0 \|\| strpos($content_type, 'application/xml') === 0) {
	- $http_body = $request->getBody(true);
	+ $http_body = $request->getBodyAsString();

	// Hack for reading php:://input because that stream can only be read once.
	// This is why we re-populate the request body with the existing data.
	$request->setBody($http_body);
	}
	else if (!empty($content_type)) {
	$http_body = '[binary data]';
	}

	// catch all headers
	$http_headers = array();
	foreach (apache_request_headers() as $hdr => $value) {
	if (strtolower($hdr) == 'authorization') {
	$method = preg_match('/^((basic\|digest)\s+)/i', $value, $m) ? $m[1] : '';
	$value = $method . str_repeat('*', strlen($value) - strlen($method));
	}
	$http_headers[$hdr] = "$hdr: $value";
	}

	$this->write_log('httpraw', $request->getMethod() . ' ' . $request->getUrl() . ' ' . $_SERVER['SERVER_PROTOCOL'] . "\n" .
	join("\n", $http_headers) . "\n\n" . $http_body);
	}

	// log to console
	if ($this->loglevel & self::CONSOLE) {
	- $this->write_log('console', $method . ' ' . $uri);
	+ $this->write_log('console', $this->method . ' ' . $request->getUrl());
	}
	}

	/**
	* Handler for 'exception' events
	*/
	public function _exception($e)
	{
	// log to console
	$this->console(get_class($e) . ' (EXCEPTION)', $e->getMessage() /, $e->getTraceAsString()/);
	}

	/**
	* Handler for 'exit' events
	*/
	public function _exit()
	{
	if ($this->loglevel & self::CONSOLE) {
	$time = microtime(true) - KOLAB_DAV_START;

	if (function_exists('memory_get_usage'))
	$mem = round(memory_get_usage() / 1024 / 1024, 1) . 'MB';
	if (function_exists('memory_get_peak_usage'))
	$mem .= '/' . round(memory_get_peak_usage() / 1024 / 1024, 1) . 'MB';

	$this->write_log('console', sprintf("/%s: %0.4f sec; %s", $this->method, $time, $mem));
	}

	// log full HTTP reponse
	if ($this->loglevel & self::HTTP_RESPONSE) {
	$this->write_log('httpraw', "RESPONSE: " . $this->server->httpResponse->dump());
	}
	}

	/**
	* Wrapper for rcube::cosole() to write per-user logs
	*/
	public function console(/* ... */)
	{
	if ($this->loglevel & self::CONSOLE) {
	$msg = array();
	foreach (func_get_args() as $arg) {
	$msg[] = !is_string($arg) ? var_export($arg, true) : $arg;
	}

	$this->write_log('console', join(";\n", $msg));
	}
	}

	/**
	* Wrapper for rcube::write_log() that can write per-user logs
	*/
	public function write_log($filename, $msg)
	{
	// dump data per user
	if ($this->rcube->config->get('kolabdav_user_debug', false)) {
	if ($this->user_log_dir()) {
	$filename = HTTPBasic::$current_user . '/' . $filename;
	}
	else {
	return; // don't log
	}
	}

	rcube::write_log($filename, $msg);
	}

	/**
	* Get the per-user log directory
	*/
	private function user_log_dir()
	{
	$log_dir = $this->rcube->config->get('log_dir', RCUBE_INSTALL_PATH . 'logs');
	$user_log_dir = $log_dir . '/' . HTTPBasic::$current_user;

	return HTTPBasic::$current_user && is_writable($user_log_dir) ? $user_log_dir : false;
	}
	}
	\ No newline at end of file
	diff --git a/public_html/index.php b/public_html/index.php
	index 9b9c201..348c52c 100644
	--- a/public_html/index.php
	+++ b/public_html/index.php
	@@ -1,197 +1,199 @@
	<?php

	/**
	* iRony, the Kolab WebDAV/CalDAV/CardDAV Server
	*
	* This is the public API to provide *DAV-based access to the Kolab Groupware backend
	*
	* @version 0.4-dev
	* @author Thomas Bruederli <bruederli@kolabsys.com>
	*
	* Copyright (C) 2013-2014, 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/>.
	*/

	// define some environment variables used throughout the app and libraries
	define('KOLAB_DAV_ROOT', realpath('../'));
	define('KOLAB_DAV_VERSION', '0.4-dev');
	define('KOLAB_DAV_START', microtime(true));

	define('RCUBE_INSTALL_PATH', KOLAB_DAV_ROOT . '/');
	define('RCUBE_CONFIG_DIR', KOLAB_DAV_ROOT . '/config/');
	define('RCUBE_PLUGINS_DIR', KOLAB_DAV_ROOT . '/lib/plugins/');

	// suppress error notices
	ini_set('error_reporting', E_ALL &~ E_NOTICE &~ E_STRICT);


	/**
	* Mapping PHP errors to exceptions.
	*
	* While this is not strictly needed, it makes a lot of sense to do so. If an
	* E_NOTICE or anything appears in your code, this allows SabreDAV to intercept
	* the issue and send a proper response back to the client (HTTP/1.1 500).
	*/
	function exception_error_handler($errno, $errstr, $errfile, $errline ) {
	throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
	}
	//set_error_handler("exception_error_handler");

	// use composer's autoloader for dependencies
	$loader = require_once(KOLAB_DAV_ROOT . '/vendor/autoload.php');
	$loader->set('Kolab', array(KOLAB_DAV_ROOT . '/lib')); // register iRony namespace(s)
	$loader->setUseIncludePath(true); // enable include_path to load PEAR classes from their default location

	// load the Roundcube framework with its autoloader
	require_once KOLAB_DAV_ROOT . '/lib/Roundcube/bootstrap.php';

	// Roundcube framework initialization
	$rcube = rcube::get_instance(rcube::INIT_WITH_DB \| rcube::INIT_WITH_PLUGINS);
	$rcube->config->load_from_file(RCUBE_CONFIG_DIR . 'dav.inc.php');

	// Load plugins
	$plugins = (array)$rcube->config->get('kolabdav_plugins', array('kolab_auth'));
	$required = array('libkolab', 'libcalendaring');

	$rcube->plugins->init($rcube);
	$rcube->plugins->load_plugins($plugins, $required);

	// enable logger
	if ($rcube->config->get('kolabdav_console') \|\| $rcube->config->get('kolabdav_user_debug')) {
	$logger = new \Kolab\Utils\DAVLogger((\Kolab\Utils\DAVLogger::CONSOLE \| $rcube->config->get('kolabdav_http_log', 0)));
	}

	// convenience function, you know it well :-)
	function console()
	{
	global $logger;

	if ($logger) {
	call_user_func_array(array($logger, 'console'), func_get_args());
	}
	}


	// Make sure this setting is turned on and reflects the root url of the *DAV server.
	$base_uri = $rcube->config->get('base_uri', slashify(substr(dirname($_SERVER['SCRIPT_FILENAME']), strlen($_SERVER['DOCUMENT_ROOT']))));

	// add filename to base URI when called without mod_rewrite (e.g. /dav/index.php/calendar)
	if (strpos($_SERVER['REQUEST_URI'], 'index.php'))
	$base_uri .= 'index.php/';

	// create the various backend instances
	$auth_backend = new \Kolab\DAV\Auth\HTTPBasic();
	$principal_backend = new \Kolab\DAVACL\PrincipalBackend();

	$services = array();
	foreach (array('CALDAV','CARDDAV','WEBDAV') as $skey) {
	if (getenv($skey))
	$services[$skey] = 1;
	}

	// no config means all services
	if (empty($services))
	$services = array('CALDAV' => 1, 'CARDDAV' => 1, 'WEBDAV' => 1);

	// add chwala directories to include path for autoloading
	if ($services['WEBDAV']) {
	$include_path = ini_get('include_path') . PATH_SEPARATOR;
	$include_path .= KOLAB_DAV_ROOT . '/lib/FileAPI' . PATH_SEPARATOR;
	$include_path .= KOLAB_DAV_ROOT . '/lib/FileAPI/kolab' . PATH_SEPARATOR;
	$include_path .= KOLAB_DAV_ROOT . '/lib/FileAPI/ext';
	set_include_path($include_path);
	}

	// Build the directory tree
	// This is an array which contains the 'top-level' directories in the WebDAV server.
	if ($services['CALDAV'] \|\| $services['CARDDAV']) {
	$nodes = array(
	new \Kolab\CalDAV\Principal\Collection($principal_backend),
	);

	if ($services['CALDAV']) {
	$caldav_backend = new \Kolab\CalDAV\CalendarBackend();
	$caldav_backend->setUserAgent($_SERVER['HTTP_USER_AGENT']);
	$nodes[] = new \Kolab\CalDAV\CalendarRootNode($principal_backend, $caldav_backend);
	}
	if ($services['CARDDAV']) {
	$carddav_backend = new \Kolab\CardDAV\ContactsBackend();
	$carddav_backend->setUserAgent($_SERVER['HTTP_USER_AGENT']);
	$nodes[] = new \Kolab\CardDAV\AddressBookRoot($principal_backend, $carddav_backend);
	}
	if ($services['WEBDAV']) {
	$nodes[] = new \Kolab\DAV\Collection(\Kolab\DAV\Collection::ROOT_DIRECTORY);
	}
	}
	// register WebDAV service as root
	else if ($services['WEBDAV']) {
	$nodes = new \Kolab\DAV\Collection('');
	}

	// the object tree needs in turn to be passed to the server class
	$server = new \Sabre\DAV\Server($nodes);
	$server->setBaseUri($base_uri);

	// connect logger
	if (is_object($logger)) {
	$server->addPlugin($logger);
	}

	// register some plugins
	$server->addPlugin(new \Sabre\DAV\Auth\Plugin($auth_backend, 'KolabDAV'));
	$server->addPlugin(new \Sabre\DAVACL\Plugin());

	if ($services['CALDAV']) {
	$caldav_plugin = new \Kolab\CalDAV\Plugin();
	- #$caldav_plugin->setIMipHandler(new \Kolab\CalDAV\IMip());
	$server->addPlugin($caldav_plugin);
	+
	+ $server->addPlugin(new \Kolab\CalDAV\SchedulePlugin());
	+ #$server->addPlugin(new \Kolab\CalDAV\IMipPlugin());
	}

	if ($services['CARDDAV']) {
	$server->addPlugin(new \Kolab\CardDAV\Plugin());
	}

	if ($services['WEBDAV']) {
	// the lock manager is responsible for making sure users don't overwrite each others changes.
	$locks_backend = new \Kolab\DAV\Locks\Chwala(\Kolab\DAV\Collection::ROOT_DIRECTORY);
	$server->addPlugin(new \Sabre\DAV\Locks\Plugin($locks_backend));

	// intercept some of the garbage files operation systems tend to generate when mounting a WebDAV share
	$server->addPlugin(new \Kolab\DAV\TempFilesPlugin(KOLAB_DAV_ROOT . '/temp'));
	}

	// HTML UI for browser-based access (recommended only for development)
	if (getenv('DAVBROWSER')) {
	$server->addPlugin(new \Sabre\DAV\Browser\Plugin());
	}

	// log exceptions in iRony error log
	$server->on('exception', function($e){
	if (!($e instanceof \Sabre\DAV\Exception) \|\| $e->getHTTPCode() == 500) {
	rcube::raise_error(array(
	'code' => 500,
	'type' => 'php',
	'file' => $e->getFile(),
	'line' => $e->getLine(),
	'message' => $e->getMessage() . " (error 500)\n" . $e->getTraceAsString(),
	), true, false);
	}
	});

	// finally, process the request
	$server->exec();

	// trigger log
	$server->emit('exit', array());

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