158 lines
No EOL
4.6 KiB
PHP
158 lines
No EOL
4.6 KiB
PHP
<?php
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/**
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* RoundCube Calendar
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*
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* CalDAV backend based on exemplary DAViCal / AWL client.
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*
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* @version 0.2 BETA 2
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* @author Michael Duelli
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* @url http://rc-calendar.lazlo.me
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* @licence GNU GPL
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* @copyright (c) 2010 Lazlo Westerhof - Netherlands
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*/
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require_once('caldav-client.php');
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class caldav_driver extends calendar_driver
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{
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private $rcmail = null;
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private $cal = null;
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private $calendar = null;
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/**
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* @param object rcmail The RoundCube instance.
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* @param string server The CalDAV server.
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* @param string user The user name.
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* @param string pass The user's password.
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* @param string calendar The user calendar.
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*/
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public function __construct($rcmail, $server, $user, $pass, $calendar) {
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$this->rcmail = $rcmail;
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$this->calendar = '/' . $calendar;
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$this->cal = new CalDAVClient($server. "/" . $user, $user, $pass, $calendar /* is ignored currently */);
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$this->cal->setUserAgent('RoundCube');
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}
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public function new_event($event) {
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// FIXME Implement
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}
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public function edit_event($event) {
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// FIXME Implement
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}
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public function move_event($event) {
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// FIXME Implement. Can be done via editEvent
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}
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public function resize_event($event) {
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// FIXME Implement. Can be done via editEvent
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}
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public function remove_event($event, $force = true) {
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// FIXME Implement.
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}
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public function load_events($start, $end, $calendars = null) {
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if (!empty($this->rcmail->user->ID)) {
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// Fetch events.
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$result = $this->cal->GetEvents($this->GMT_to_iCalendar($start), $this->GMT_to_iCalendar($end), $this->calendar);
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$events = array();
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foreach ($result as $k => $event) {
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$lines = explode("\n", $event['data']);
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$n = count($lines);
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$eventid = null;
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$flag = true;
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for ($i = 0; $i < $n; $i++) {
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if ($flag) {
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if (strpos($lines[$i], "BEGIN:VEVENT") === 0)
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$flag = false;
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continue;
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}
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if (strpos($lines[$i], "END:VEVENT") === 0)
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break;
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if (empty($lines[$i]))
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continue; // FIXME
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$tmp = explode(":", $lines[$i]);
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if (count($tmp) !== 2)
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continue; // FIXME
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list($id, $value) = $tmp;
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if (!isset($id) || !isset($value))
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continue; // FIXME
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if (is_null($eventid) && strpos($id, "UID") === 0)
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$eventid = $value;
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elseif (!isset($event['start']) && strpos($id, "DTSTART") === 0) {
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$event['start'] = $this->iCalendar_to_Unix($value);
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// Check for all-day event.
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$event['all_day'] = (strlen($value) === 8 ? 0 : 1);
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} elseif (!isset($event['end']) && strpos($id, "DTEND") === 0)
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$event['end'] = $this->iCalendar_to_Unix($value);
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elseif (!isset($event['title']) && strpos($id, "SUMMARY") === 0)
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$event['title'] = $value;
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elseif (!isset($event['description']) && strpos($id, "DESCRIPTION") === 0) {
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$event['description'] = $value;
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// FIXME Problem with multiple lines!
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// if ($i+1 < $n && $lines[$i+1] does not contain keyword...) {
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// Add line to description
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// $i++;
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// }
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} elseif (!isset($event['location']) && strpos($id, "LOCATION") === 0)
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$event['location'] = $value;
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elseif (!isset($event['categories']) && strpos($id, "CATEGORIES") === 0)
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$event['categories'] = $value;
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}
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$events[]=array(
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'event_id' => $eventid,
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'start' => $event['start'],
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'end' => $event['end'],
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'title' => strval($event['title']),
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'description' => strval($event['description']),
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'location' => strval($event['location']),
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'categories' => $event['categories'],
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'allDay' => $event['all_day'],
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);
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}
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return $events;
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}
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}
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/**
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* Convert a GMT time stamp ('Y-m-d H:i:s') to the iCalendar format as defined in
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* RFC 5545, Section 3.2.19, http://tools.ietf.org/html/rfc5545#section-3.2.19.
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*
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* @param timestamp A GMT time stamp ('Y-m-d H:i:s')
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* @return An iCalendar time stamp, e.g. yyyymmddThhmmssZ
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*/
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private function GMT_to_iCalendar($timestamp) {
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$unix_timestamp = strtotime($timestamp);
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return date("Ymd", $unix_timestamp) . "T" . date("His", $unix_timestamp) . "Z";
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}
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/**
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* Convert a time stamp in iCalendar format as defined in
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* RFC 5545, Section 3.2.19, http://tools.ietf.org/html/rfc5545#section-3.2.19
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* to a Unix time stamp. Further conversion is done in jsonEvents.
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*
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* @param timestamp An iCalendar time stamp, e.g. yyyymmddThhmmssZ
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* @return A Unix time stamp
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*/
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private function iCalendar_to_Unix($timestamp) {
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return strtotime($timestamp);
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}
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}
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?>
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