24 lines
956 B
Diff
24 lines
956 B
Diff
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diff --git a/plugins/calendar/lib/Horde_iCalendar.php b/plugins/calendar/lib/Horde_iCalendar.php
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index a3ff79d..6d75d27 100644
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--- a/plugins/calendar/lib/Horde_iCalendar.php
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+++ b/plugins/calendar/lib/Horde_iCalendar.php
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@@ -1874,7 +1874,17 @@ class Horde_iCalendar {
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{
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$vtimezone = $this->_container->findComponentByAttribute('vtimezone', 'TZID', $tzid);
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if (!$vtimezone) {
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- return false;
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+ // use PHP's standard timezone db to determine tzoffset
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+ try {
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+ $tz = new DateTimeZone($tzid);
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+ $dt = new DateTime('now', $tz);
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+ $dt->setDate($date['year'], $date['month'], $date['mday']);
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+ $dt->setTime($time['hour'], $time['minute'], $date['recond']);
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+ return $tz->getOffset($dt);
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+ }
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+ catch (Exception $e) {
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+ return false;
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+ }
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}
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$change_times = array();
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