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;
}
/**
* @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;
}
}
}