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allow to download whole CalDAV collection as one big iCal file by adding "?checkout" to collection url

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This commit is contained in:
Ralf Becker 2015-11-08 12:33:35 +00:00
parent 51c4c6d4e6
commit 557adc4051
1 changed files with 54 additions and 0 deletions
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54
calendar/inc/class.calendar_groupdav.inc.php
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@ -150,6 +150,14 @@ class calendar_groupdav extends groupdav_handler
return $this->free_busy_report($path, $options, $user);
}
if (isset($_GET['checkout']))
{
$this->groupdav->propfind_options['props'] = array(array(
'xmlns' => groupdav::CALDAV,
'name' => 'calendar-data',
));
}
// ToDo: add parameter to only return id & etag
$filter = array(
'users' => $user,
@ -245,9 +253,55 @@ class calendar_groupdav extends groupdav_handler
// return iterator, calling ourself to return result in chunks
$files['files'] = new groupdav_propfind_iterator($this,$path,$filter,$files['files']);
}
if (isset($_GET['checkout']))
{
$this->output_vcalendar($files['files']);
}
return true;
}
/**
* Download whole calendar as big ics file
*
* @param iterator|array $files
*/
function output_vcalendar($files)
{
// todo ETag logic with CTag to not download unchanged calendar again
html::content_header('calendar.ics', 'text/calendar');
$n = 0;
foreach($files as $file)
{
if (!$n++) continue; // first entry is collection itself
$icalendar = $file['props']['calendar-data']['val'];
if (($start = strpos($icalendar, 'BEGIN:VEVENT')) !== false &&
($end = strrpos($icalendar, 'END:VCALENDAR')) !== false)
{
if ($n === 2)
{
// skip timezones, as we would need to collect them from all events
// ans most clients understand timezone by reference anyway
if (($tz = strpos($icalendar, 'BEGIN:VTIMEZONE')) !== false)
{
echo substr($icalendar, 0, $tz);
}
else
{
echo substr($icalendar, 0, $start);
}
}
echo substr($icalendar, $start, $end-$start);
}
}
if ($icalendar && $end)
{
echo "END:VCALENDAR\n";
}
common::egw_exit();
}
/**
* Callback for profind interator
*