nextcloud/apps/calendar/lib/object.php

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<?php
/**
* ownCloud - Calendar
*
* @author Jakob Sack
* @copyright 2011 Jakob Sack mail@jakobsack.de
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* This class manages our calendars
*/
class OC_Calendar_Object{
/**
* @brief Returns all objects of a calendar
* @param integer $id
* @return array
*
* The objects are associative arrays. You'll find the original vObject in
* ['calendardata']
*/
public static function all($id){
$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE calendarid = ?' );
$result = $stmt->execute(array($id));
$calendarobjects = array();
while( $row = $result->fetchRow()){
$calendarobjects[] = $row;
}
return $calendarobjects;
}
/**
* @brief Returns an object
* @param integer $id
* @return associative array
*/
public static function find($id){
$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE id = ?' );
$result = $stmt->execute(array($id));
return $result->fetchRow();
}
/**
* @brief finds an object by its DAV Data
* @param integer $cid Calendar id
* @param string $uri the uri ('filename')
* @return associative array
*/
public static function findWhereDAVDataIs($cid,$uri){
$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE calendarid = ? AND uri = ?' );
$result = $stmt->execute(array($cid,$uri));
return $result->fetchRow();
}
/**
* @brief Adds an object
* @param integer $id Calendar id
* @param string $data object
* @return insertid
*/
public static function add($id,$data){
$object = self::parse($data);
list($type,$startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
if(is_null($uid)){
$uid = self::createUID();
$object->add('UID',$uid);
$data = $object->serialize();
}
$uri = 'owncloud-'.md5($data.rand().time()).'.ics';
$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*calendar_objects (calendarid,objecttype,startdate,enddate,repeating,summary,calendardata,uri,lastmodified) VALUES(?,?,?,?,?,?,?,?,?)' );
$result = $stmt->execute(array($id,$type,$startdate,$enddate,$repeating,$summary,$data,$uri,time()));
OC_Calendar_Calendar::touchCalendar($id);
return OC_DB::insertid();
}
/**
* @brief Adds an object with the data provided by sabredav
* @param integer $id Calendar id
* @param string $uri the uri the card will have
* @param string $data object
* @return insertid
*/
public static function addFromDAVData($id,$uri,$data){
$object = self::parse($data);
list($type,$startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*calendar_objects (calendarid,objecttype,startdate,enddate,repeating,summary,calendardata,uri,lastmodified) VALUES(?,?,?,?,?,?,?,?,?)' );
$result = $stmt->execute(array($id,$type,$startdate,$enddate,$repeating,$summary,$data,$uri,time()));
OC_Calendar_Calendar::touchCalendar($id);
return OC_DB::insertid();
}
/**
* @brief edits an object
* @param integer $id id of object
* @param string $data object
* @return boolean
*/
public static function edit($id, $data){
$oldobject = self::find($id);
$object = self::parse($data);
list($type,$startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
$stmt = OC_DB::prepare( 'UPDATE *PREFIX*calendar_objects SET objecttype=?,startdate=?,enddate=?,repeating=?,summary=?,calendardata=?, lastmodified = ? WHERE id = ?' );
$result = $stmt->execute(array($type,$startdate,$enddate,$repeating,$summary,$data,time(),$id));
OC_Calendar_Calendar::touchCalendar($id);
return true;
}
/**
* @brief edits an object with the data provided by sabredav
* @param integer $id calendar id
* @param string $uri the uri of the object
* @param string $data object
* @return boolean
*/
public static function editFromDAVData($cid,$uri,$data){
$oldobject = self::findWhereDAVDataIs($cid,$uri);
$object = self::parse($data);
list($type,$startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
$stmt = OC_DB::prepare( 'UPDATE *PREFIX*calendar_objects SET objecttype=?,startdate=?,enddate=?,repeating=?,summary=?,calendardata=?, lastmodified = ? WHERE id = ?' );
$result = $stmt->execute(array($type,$startdate,$enddate,$repeating,$summary,$data,time(),$oldobject['id']));
OC_Calendar_Calendar::touchCalendar($oldobject['calendarid']);
return true;
}
/**
* @brief deletes an object
* @param integer $id id of object
* @return boolean
*/
public static function delete($id){
$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_objects WHERE id = ?' );
$stmt->execute(array($id));
return true;
}
/**
* @brief deletes an object with the data provided by sabredav
* @param integer $cid calendar id
* @param string $uri the uri of the object
* @return boolean
*/
public static function deleteFromDAVData($cid,$uri){
$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_objects WHERE calendarid = ? AND uri=?' );
$stmt->execute(array($cid,$uri));
return true;
}
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public static function moveToCalendar($id, $calendarid){
$stmt = OC_DB::prepare( 'UPDATE *PREFIX*calendar_objects SET calendarid=? WHERE id = ?' );
$result = $stmt->execute(array($calendarid,$id));
OC_Calendar_Calendar::touchCalendar($id);
return true;
}
/**
* @brief Creates a UID
* @return string
*/
protected static function createUID(){
return substr(md5(rand().time()),0,10);
}
/**
* @brief Extracts data from a vObject-Object
* @param Sabre_VObject $object
* @return array
*
* [type, start, end, summary, repeating, uid]
*/
protected static function extractData($object){
$return = array('',null,null,'',0,null);
// Child to use
$children = 0;
$use = null;
foreach($object->children as &$property){
if($property->name == 'VEVENT'){
$children++;
$thisone = true;
foreach($property->children as &$element){
if($element->name == 'RECURRENCE-ID'){
$thisone = false;
}
} unset($element);
if($thisone){
$use = $property;
}
}
elseif($property->name == 'VTODO' || $property->name == 'VJOURNAL'){
$return[0] = $property->name;
foreach($property->children as &$element){
if($element->name == 'SUMMARY'){
$return[3] = $element->value;
}
elseif($element->name == 'UID'){
$return[5] = $element->value;
}
};
// Only one VTODO or VJOURNAL per object
// (only one UID per object but a UID is required by a VTODO =>
// one VTODO per object)
break;
}
} unset($property);
// find the data
if(!is_null($use)){
$return[0] = $use->name;
foreach($use->children as &$property){
if($property->name == 'DTSTART'){
$return[1] = self::getUTCforMDB($property->getDateTime());
}
elseif($property->name == 'DTEND'){
$return[2] = self::getUTCforMDB($property->getDateTime());
}
elseif($property->name == 'SUMMARY'){
$return[3] = $property->value;
}
elseif($property->name == 'RRULE'){
$return[4] = 1;
}
elseif($property->name == 'UID'){
$return[5] = $property->value;
}
} unset($property);
}
// More than one child means reoccuring!
if($children > 1){
$return[4] = 1;
}
return $return;
}
/**
* @brief DateTime to UTC string
* @param DateTime $datetime The date to convert
* @returns date as YYYY-MM-DD hh:mm
*
* This function creates a date string that can be used by MDB2.
* Furthermore it converts the time to UTC.
*/
protected static function getUTCforMDB($datetime){
return date('Y-m-d H:i', $datetime->format('U') - $datetime->getOffset());
}
/**
* @brief Parses the VObject
* @param string VObject as string
* @returns Sabre_VObject or null
*/
public static function parse($data){
try {
$calendar = Sabre_VObject_Reader::read($data);
return $calendar;
} catch (Exception $e) {
return null;
}
}
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public static function getCategoryOptions($l10n)
{
return array(
$l10n->t('None'),
$l10n->t('Birthday'),
$l10n->t('Business'),
$l10n->t('Call'),
$l10n->t('Clients'),
$l10n->t('Deliverer'),
$l10n->t('Holidays'),
$l10n->t('Ideas'),
$l10n->t('Journey'),
$l10n->t('Jubilee'),
$l10n->t('Meeting'),
$l10n->t('Other'),
$l10n->t('Personal'),
$l10n->t('Projects'),
$l10n->t('Questions'),
$l10n->t('Work'),
);
}
public static function getRepeatOptions($l10n)
{
return array(
'doesnotrepeat' => $l10n->t('Does not repeat'),
'daily' => $l10n->t('Daily'),
'weekly' => $l10n->t('Weekly'),
'weekday' => $l10n->t('Every Weekday'),
'biweekly' => $l10n->t('Bi-Weekly'),
'monthly' => $l10n->t('Monthly'),
'yearly' => $l10n->t('Yearly'),
);
}
public static function validateRequest($request)
{
$errnum = 0;
$errarr = array('title'=>'false', 'cal'=>'false', 'from'=>'false', 'fromtime'=>'false', 'to'=>'false', 'totime'=>'false', 'endbeforestart'=>'false');
if($request['title'] == ''){
$errarr['title'] = 'true';
$errnum++;
}
$calendar = OC_Calendar_Calendar::findCalendar($request['calendar']);
if($calendar['userid'] != OC_User::getUser()){
$errarr['cal'] = 'true';
$errnum++;
}
$fromday = substr($request['from'], 0, 2);
$frommonth = substr($request['from'], 3, 2);
$fromyear = substr($request['from'], 6, 4);
if(!checkdate($frommonth, $fromday, $fromyear)){
$errarr['from'] = 'true';
$errnum++;
}
$allday = isset($request['allday']);
if(!$allday && self::checkTime(urldecode($request['fromtime']))) {
$errarr['fromtime'] = 'true';
$errnum++;
}
$today = substr($request['to'], 0, 2);
$tomonth = substr($request['to'], 3, 2);
$toyear = substr($request['to'], 6, 4);
if(!checkdate($tomonth, $today, $toyear)){
$errarr['to'] = 'true';
$errnum++;
}
;
if(!$allday && self::checkTime(urldecode($request['totime']))) {
$errarr['totime'] = 'true';
$errnum++;
}
if($today < $fromday && $frommonth == $tomonth && $fromyear == $toyear){
$errarr['endbeforestart'] = 'true';
$errnum++;
}
if($today == $fromday && $frommonth > $tomonth && $fromyear == $toyear){
$errarr['endbeforestart'] = 'true';
$errnum++;
}
if($today == $fromday && $frommonth == $tomonth && $fromyear > $toyear){
$errarr['endbeforestart'] = 'true';
$errnum++;
}
if($fromday == $today && $frommonth == $tomonth && $fromyear == $toyear){
list($tohours, $tominutes) = explode(':', $request['totime']);
list($fromhours, $fromminutes) = explode(':', $request['fromtime']);
if($tohours < $fromhours){
$errarr['endbeforestart'] = 'true';
$errnum++;
}
if($tohours == $fromhours && $tominutes < $fromminutes){
$errarr['endbeforestart'] = 'true';
$errnum++;
}
}
if ($errnum)
{
return $errarr;
}
return false;
}
protected static function checkTime($time)
{
list($hours, $minutes) = explode(':', $time);
return empty($time)
|| $hours < 0 || $hours > 24
|| $minutes < 0 || $minutes > 60;
}
public static function createVCalendarFromRequest($request)
{
$vcalendar = new Sabre_VObject_Component('VCALENDAR');
$vcalendar->add('PRODID', 'ownCloud Calendar');
$vcalendar->add('VERSION', '2.0');
$now = new DateTime();
$vevent = new Sabre_VObject_Component('VEVENT');
$vcalendar->add($vevent);
$created = new Sabre_VObject_Element_DateTime('CREATED');
$created->setDateTime($now, Sabre_VObject_Element_DateTime::UTC);
$vevent->add($created);
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$uid = self::createUID();
$vevent->add('UID',$uid);
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return self::updateVCalendarFromRequest($request, $vcalendar);
}
public static function updateVCalendarFromRequest($request, $vcalendar)
{
$title = $request["title"];
$location = $request["location"];
$cat = $request["category"];
$allday = isset($request["allday"]);
$from = $request["from"];
$fromtime = $request["fromtime"];
$to = $request["to"];
$totime = $request["totime"];
$description = $request["description"];
//$repeat = $request["repeat"];
/*switch($request["repeatfreq"]){
case "DAILY":
$repeatfreq = "DAILY";
case "WEEKLY":
$repeatfreq = "WEEKLY";
case "WEEKDAY":
$repeatfreq = "DAILY;BYDAY=MO,TU,WE,TH,FR"; //load weeksdayss from userconfig when weekdays are choosable
case "":
$repeatfreq = "";
case "":
$repeatfreq = "";
case "":
$repeatfreq = "";
default:
$repeat = "false";
}*/
$repeat = "false";
$now = new DateTime();
$vevent = $vcalendar->VEVENT[0];
$last_modified = new Sabre_VObject_Element_DateTime('LAST-MODIFIED');
$last_modified->setDateTime($now, Sabre_VObject_Element_DateTime::UTC);
$vevent->__set('LAST-MODIFIED', $last_modified);
$dtstamp = new Sabre_VObject_Element_DateTime('DTSTAMP');
$dtstamp->setDateTime($now, Sabre_VObject_Element_DateTime::UTC);
$vevent->DTSTAMP = $dtstamp;
$vevent->SUMMARY = $title;
$dtstart = new Sabre_VObject_Element_DateTime('DTSTART');
$dtend = new Sabre_VObject_Element_DateTime('DTEND');
if($allday){
$start = new DateTime($from);
$end = new DateTime($to.' +1 day');
$dtstart->setDateTime($start, Sabre_VObject_Element_DateTime::DATE);
$dtend->setDateTime($end, Sabre_VObject_Element_DateTime::DATE);
}else{
$timezone = OC_Preferences::getValue(OC_USER::getUser(), "calendar", "timezone", "Europe/London");
$timezone = new DateTimeZone($timezone);
$start = new DateTime($from.' '.$fromtime, $timezone);
$end = new DateTime($to.' '.$totime, $timezone);
$dtstart->setDateTime($start, Sabre_VObject_Element_DateTime::LOCALTZ);
$dtend->setDateTime($end, Sabre_VObject_Element_DateTime::LOCALTZ);
}
$vevent->DTSTART = $dtstart;
$vevent->DTEND = $dtend;
if($location != ""){
$vevent->LOCATION = $location;
}
if($description != ""){
$des = str_replace("\n","\\n", $description);
$vevent->DESCRIPTION = $des;
}
if($cat != ""){
$vevent->CATEGORIES = $cat;
}
/*if($repeat == "true"){
$vevent->RRULE = $repeat;
}*/
return $vcalendar;
}
}