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diff --git a/lib/Kolab/FreeBusy/FormatExchange2010.php b/lib/Kolab/FreeBusy/FormatExchange2010.php
index 8aec7e4..8534df2 100644
--- a/lib/Kolab/FreeBusy/FormatExchange2010.php
+++ b/lib/Kolab/FreeBusy/FormatExchange2010.php
@@ -1,135 +1,137 @@
<?php
namespace Kolab\FreeBusy;
use Sabre\VObject\Reader as VCalReader;
use Sabre\VObject\FreeBusyGenerator;
use Sabre\VObject\ParseException;
use Desarrolla2\Cache\Cache;
use Desarrolla2\Cache\Adapter\File as FileCache;
use \SimpleXMLElement;
/**
* Implementation of a data converter reading Exchange 2010 Internet Calendar Publishing files
*/
class FormatExchange2010 extends Format
{
private $tzmap;
/**
* @see Format::toVCalendar()
*/
public function toVCalendar($input)
{
// convert Microsoft timezone identifiers to Olson standard
// do this before parsing to create correct DateTime values
$input = preg_replace_callback('/(TZID[=:])([-\w ]+)\b/i', array($this, 'convertTZID'), $input);
try {
// parse vcalendar data
$calendar = VCalReader::read($input);
// map X-MICROSOFT-CDO-* attributes into iCal equivalents
foreach ($calendar->VEVENT as $vevent) {
if ($busystatus = reset($vevent->select('X-MICROSOFT-CDO-BUSYSTATUS'))) {
$vevent->STATUS->value = $busystatus->value;
}
}
// feed the calendar object into the free/busy generator
// we must specify a start and end date, because recurring events are expanded. nice!
+ $utc = new \DateTimezone('UTC');
$fbgen = new FreeBusyGenerator(
- new \DateTime('now - 8 weeks'),
- new \DateTime('now + 16 weeks'),
+ new \DateTime('now - 8 weeks 00:00:00', $utc),
+ new \DateTime('now + 16 weeks 00:00:00', $utc),
$calendar
);
// get the freebusy report
$freebusy = $fbgen->getResult();
- $freebusy->PRODID->value = '-//kolab.org//NONSGML Kolab Server 3//EN';
+ $freebusy->PRODID = '-//kolab.org//NONSGML Kolab Server 3//EN';
+ $freebusy->METHOD = 'PUBLISH';
// serialize to VCALENDAR format
return $freebusy->serialize();
}
catch (ParseException $e) {
Logger::get('format.Exchange2010')->addError("iCal parse error: " . $e->getMessage());
}
return false;
}
/**
* preg_replace callback function to map Timezone identifiers
*/
private function convertTZID($m)
{
if (!isset($this->tzmap)) {
$this->getTZMAP();
}
$key = strtolower($m[2]);
if ($this->tzmap[$key]) {
$m[2] = $this->tzmap[$key];
}
return $m[1] . $m[2] . $m[3];
}
/**
* Generate a Microsoft => Olson Timezone mapping table from an official source
*/
private function getTZMAP()
{
if (!isset($this->tzmap)) {
$log = Logger::get('format.Exchange2010');
$cache = new Cache(new FileCache(sys_get_temp_dir()));
// read from cache
$this->tzmap = $cache->get('windows-timezones');
// fetch timezones map from source
if (empty($this->tzmap)) {
$this->tzmap = array();
$zones_url = 'http://unicode.org/repos/cldr/trunk/common/supplemental/windowsZones.xml';
if ($xml = @file_get_contents($zones_url)) {
try {
$zonedata = new SimpleXMLElement($xml, LIBXML_NOWARNING | LIBXML_NOERROR);
foreach ($zonedata->windowsZones[0]->mapTimezones[0]->mapZone as $map) {
$other = strtolower(strval($map['other']));
$region = strval($map['territory']);
$words = explode(' ', $other);
$olson = explode(' ', strval($map['type']));
// skip invalid entries
if (empty($other) || empty($olson))
continue;
// create an entry for all substrings
for ($i = 1; $i <= count($words); $i++) {
$last = $i == count($words);
$key = join(' ', array_slice($words, 0, $i));
if ($region == '001' || ($last && empty($this->tzmap[$key]))) {
$this->tzmap[$key] = $olson[0];
}
}
}
// cache the mapping for one week
$cache->set('windows-timezones', $this->tzmap, 7 * 86400);
$log->addInfo("Updated Windows Timezones Map from source", array($zones_url));
}
catch (\Exception $e) {
$log->addError("Failed parse Windows Timezones Map: " . $e->getMessage());
}
}
else {
$log->addError("Failed to load Windows Timezones Map from source", array($zones_url));
}
}
}
return $this->tzmap;
}
}

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