nextcloud/apps/calendar/lib/calendar.php

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<?php
/**
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* ownCloud - Calendar
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*
* @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/>.
*
*/
/*
*
* The following SQL statement is just a help for developers and will not be
* executed!
*
* CREATE TABLE calendar_objects (
* id INTEGER UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
* calendarid INTEGER UNSIGNED NOT NULL,
* objecttype VARCHAR(40) NOT NULL,
* startdate DATETIME,
* enddate DATETIME,
* repeating INT(1),
* summary VARCHAR(255),
* calendardata TEXT,
* uri VARCHAR(100),
* lastmodified INT(11)
* );
*
* CREATE TABLE calendar_calendars (
* id INTEGER UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
* userid VARCHAR(255),
* displayname VARCHAR(100),
* uri VARCHAR(100),
* ctag INTEGER UNSIGNED NOT NULL DEFAULT '0',
* description TEXT,
* calendarorder INTEGER UNSIGNED NOT NULL DEFAULT '0',
* calendarcolor VARCHAR(10),
* timezone TEXT,
* components VARCHAR(20)
* );
*/
/**
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* This class manages our calendars
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*/
class OC_Calendar_Calendar{
public static function allCalendars($uid){
$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_calendars WHERE userid = ?' );
$result = $stmt->execute(array($uid));
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$calendars = array();
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while( $row = $result->fetchRow()){
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$calendars[] = $row;
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}
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return $calendars;
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}
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public static function allCalendarsWherePrincipalURIIs($principaluri){
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$uid = self::extractUserID($principaluri);
return self::allCalendars($uid);
}
public static function findCalendar($id){
$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_calendars WHERE id = ?' );
$result = $stmt->execute(array($id));
return $result->fetchRow();
}
public static function addCalendar($userid,$name,$description,$components='VEVENT,VTODO,VJOURNAL',$timezone=null,$order=0,$color=null){
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$all = self::allCalendars($userid);
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$uris = array();
foreach($all as $i){
$uris[] = $i['uri'];
}
$uri = self::createURI($name, $uris );
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$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*calendar_calendars (userid,displayname,uri,ctag,description,calendarorder,calendarcolor,timezone,components) VALUES(?,?,?,?,?,?,?,?,?)' );
$result = $stmt->execute(array($userid,$name,$uri,1,$description,$order,$color,$timezone,$components));
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return OC_DB::insertid();
}
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public static function addCalendarFromDAVData($principaluri,$uri,$name,$description,$components,$timezone,$order,$color){
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$userid = self::extractUserID($principaluri);
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$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*calendar_calendars (userid,displayname,uri,ctag,description,calendarorder,calendarcolor,timezone,components) VALUES(?,?,?,?,?,?,?,?,?)' );
$result = $stmt->execute(array($userid,$name,$uri,1,$description,$order,$color,$timezone,$components));
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return OC_DB::insertid();
}
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public static function editCalendar($id,$name=null,$description=null,$components=null,$timezone=null,$order=null,$color=null){
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// Need these ones for checking uri
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$calendar = self::find($id);
// Keep old stuff
if(is_null($name)) $name = $calendar['name'];
if(is_null($description)) $description = $calendar['description'];
if(is_null($components)) $components = $calendar['components'];
if(is_null($timezone)) $timezone = $calendar['timezone'];
if(is_null($order)) $order = $calendar['order'];
if(is_null($color)) $color = $calendar['color'];
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$stmt = OC_DB::prepare( 'UPDATE *PREFIX*calendar_calendars SET displayname=?,description=?,calendarorder=?,calendarcolor=?,timezone=?,components=?,ctag=ctag+1 WHERE id=?' );
$result = $stmt->execute(array($name,$description,$order,$color,$timezone,$components,$id));
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return true;
}
public static function touchCalendar($id){
$stmt = OC_DB::prepare( 'UPDATE *PREFIX*calendar_calendars SET ctag = ctag + 1 WHERE id = ?' );
$stmt->execute(array($id));
return true;
}
public static function deleteCalendar($id){
$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_calendars WHERE id = ?' );
$stmt->execute(array($id));
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$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_objects WHERE calendarid = ?' );
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$stmt->execute(array($id));
return true;
}
public static function allCalendarObjects($id){
$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE calendarid = ?' );
$result = $stmt->execute(array($id));
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$calendarobjects = array();
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while( $row = $result->fetchRow()){
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$calendarobjects[] = $row;
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}
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return $calendarobjects;
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}
public static function findCalendarObject($id){
$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE id = ?' );
$result = $stmt->execute(array($id));
return $result->fetchRow();
}
public static function findCalendarObjectWhereDAVDataIs($cid,$uri){
$stmt = OC_DB::prepare( 'SELECT * FROM *PREFIX*calendar_objects WHERE calendarid = ? AND uri = ?' );
$result = $stmt->execute(array($cid,$uri));
return $result->fetchRow();
}
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public static function addCalendarObject($id,$data){
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$object = Sabre_VObject_Reader::read($data);
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list($type,$startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
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if(is_null($uid)){
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$uid = self::createUID();
$object->add('UID',$uid);
$data = $object->serialize();
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}
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$uri = 'owncloud-'.md5($data.rand().time()).'.ics';
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$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*calendar_objects (calendarid,objecttype,startdate,enddate,repeating,summary,calendardata,uri,lastmodified) VALUES(?,?,?,?,?,?,?,?,?)' );
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$result = $stmt->execute(array($id,$type,$startdate,$enddate,$repeating,$summary,$data,$uri,time()));
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self::touchCalendar($id);
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return OC_DB::insertid();
}
public static function addCalendarObjectFromDAVData($id,$uri,$data){
$object = Sabre_VObject_Reader::read($data);
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list($type,$startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
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$stmt = OC_DB::prepare( 'INSERT INTO *PREFIX*calendar_objects (calendarid,objecttype,startdate,enddate,repeating,summary,calendardata,uri,lastmodified) VALUES(?,?,?,?,?,?,?,?,?)' );
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$result = $stmt->execute(array($id,$type,$startdate,$enddate,$repeating,$summary,$data,$uri,time()));
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self::touchCalendar($id);
return OC_DB::insertid();
}
public static function editCalendarObject($id, $data){
$oldobject = self::findCard($id);
$object = Sabre_VObject_Reader::read($data);
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list($type,$startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
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$stmt = OC_DB::prepare( 'UPDATE *PREFIX*calendar_objects SET objecttype=?,startdate=?,enddate=?,repeating=?,summary=?,calendardata=?, lastmodified = ? WHERE id = ?' );
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$result = $stmt->execute(array($type,$startdate,$enddate,$repeating,$summary,$data,time(),$id));
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self::touchCalendar($id);
return true;
}
public static function editCalendarObjectFromDAVData($cid,$uri,$data){
$oldobject = self::findCardWhereDAVDataIs($cid,$uri);
$object = Sabre_VObject_Reader::read($data);
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list($type,$startdate,$enddate,$summary,$repeating,$uid) = self::extractData($object);
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$stmt = OC_DB::prepare( 'UPDATE *PREFIX*calendar_objects SET objecttype=?,startdate=?,enddate=?,repeating=?,summary=?,calendardata=?, lastmodified = ? WHERE id = ?' );
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$result = $stmt->execute(array($type,$startdate,$enddate,$repeating,$summary,$data,time(),$oldobject['id']));
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self::touchCalendar($oldobject['calendarid']);
return true;
}
public static function deleteCalendarObject($id){
$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_objects WHERE id = ?' );
$stmt->execute(array($id));
return true;
}
public static function deleteCalendarObjectFromDAVData($cid,$uri){
$stmt = OC_DB::prepare( 'DELETE FROM *PREFIX*calendar_objects WHERE calendarid = ? AND uri=?' );
$stmt->execute(array($cid,$uri));
return true;
}
public static function createURI($name,$existing){
$name = strtolower($name);
$newname = $name;
$i = 1;
while(in_array($newname,$existing)){
$newname = $name.$i;
$i = $i + 1;
}
return $newname;
}
public static function createUID(){
return substr(md5(rand().time()),0,10);
}
public static function extractUserID($principaluri){
list($prefix,$userid) = Sabre_DAV_URLUtil::splitPath($principaluri);
return $userid;
}
protected static function extractData($object){
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$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 = $property;
}
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}
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elseif($property->name == 'VTODO' || $property->name == 'VJOURNAL'){
$return[0] = $use->name;
foreach($property->children as &$element){
if($property->name == 'SUMMARY'){
$return[3] = $property->value;
}
elseif($property->name == 'UID'){
$return[5] = $property->value;
}
};
// Only one VTODO or VJOURNAL per object
// (only one UID per object but a UID is required by a VTODO =>
// one VTODO per object)
break;
}
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} unset($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;
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}
return $return;
}
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/**
* @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());
}
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}