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Merge pull request #14429 from owncloud/issue/14176-validate-timezone-before-using

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Etc timezones don't exist for .5 and .75 offsets
This commit is contained in:
Morris Jobke 2015-03-09 16:16:16 +01:00
commit d34662122d
2 changed files with 77 additions and 15 deletions
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63
lib/private/datetimezone.php
View file

@ -44,19 +44,66 @@ class DateTimeZone implements IDateTimeZone {
$timeZone = $this->config->getUserValue($this->session->get('user_id'), 'core', 'timezone', null);
if ($timeZone === null) {
if ($this->session->exists('timezone')) {
$offsetHours = $this->session->get('timezone');
return $this->guessTimeZoneFromOffset($this->session->get('timezone'));
}
$timeZone = $this->getDefaultTimeZone();
}
try {
return new \DateTimeZone($timeZone);
} catch (\Exception $e) {
\OCP\Util::writeLog('datetimezone', 'Failed to created DateTimeZone "' . $timeZone . "'", \OCP\Util::DEBUG);
return new \DateTimeZone($this->getDefaultTimeZone());
}
}
/**
* Guess the DateTimeZone for a given offset
*
* We first try to find a Etc/GMT* timezone, if that does not exist,
* we try to find it manually, before falling back to UTC.
*
* @param mixed $offset
* @return \DateTimeZone
*/
protected function guessTimeZoneFromOffset($offset) {
try {
// Note: the timeZone name is the inverse to the offset,
// so a positive offset means negative timeZone
// and the other way around.
if ($offsetHours > 0) {
return new \DateTimeZone('Etc/GMT-' . $offsetHours);
if ($offset > 0) {
$timeZone = 'Etc/GMT-' . $offset;
} else {
return new \DateTimeZone('Etc/GMT+' . abs($offsetHours));
}
} else {
return new \DateTimeZone('UTC');
}
$timeZone = 'Etc/GMT+' . abs($offset);
}
return new \DateTimeZone($timeZone);
} catch (\Exception $e) {
// If the offset has no Etc/GMT* timezone,
// we try to guess one timezone that has the same offset
foreach (\DateTimeZone::listIdentifiers() as $timeZone) {
$dtz = new \DateTimeZone($timeZone);
$dtOffset = $dtz->getOffset(new \DateTime());
if ($dtOffset == 3600 * $offset) {
return $dtz;
}
}
// No timezone found, fallback to UTC
\OCP\Util::writeLog('datetimezone', 'Failed to find DateTimeZone for offset "' . $offset . "'", \OCP\Util::DEBUG);
return new \DateTimeZone($this->getDefaultTimeZone());
}
}
/**
* Get the default timezone of the server
*
* Falls back to UTC if it is not yet set.
*
* @return string
*/
protected function getDefaultTimeZone() {
$serverTimeZone = date_default_timezone_get();
return $serverTimeZone ?: 'UTC';
}
}

21
tests/lib/util.php
View file

@ -52,16 +52,31 @@ class Test_Util extends \Test\TestCase {
OC_Util::formatDate(1350129205, false, 'Mordor/Barad-dûr');
}
function testFormatDateWithTZFromSession() {
public function formatDateWithTZFromSessionData()
{
return array(
array(3, 'October 13, 2012 at 2:53:25 PM GMT+3'),
array(15, 'October 13, 2012 at 11:53:25 AM GMT+0'),
array(-13, 'October 13, 2012 at 11:53:25 AM GMT+0'),
array(3.5, 'October 13, 2012 at 3:23:25 PM GMT+3:30'),
array(9.5, 'October 13, 2012 at 9:23:25 PM GMT+9:30'),
array(-4.5, 'October 13, 2012 at 7:23:25 AM GMT-4:30'),
array(15.5, 'October 13, 2012 at 11:53:25 AM GMT+0'),
);
}
/**
* @dataProvider formatDateWithTZFromSessionData
*/
function testFormatDateWithTZFromSession($offset, $expected) {
date_default_timezone_set("UTC");
$oldDateTimeFormatter = \OC::$server->query('DateTimeFormatter');
\OC::$server->getSession()->set('timezone', 3);
\OC::$server->getSession()->set('timezone', $offset);
$newDateTimeFormatter = new \OC\DateTimeFormatter(\OC::$server->getDateTimeZone()->getTimeZone(), new \OC_L10N('lib', 'en'));
$this->setDateFormatter($newDateTimeFormatter);
$result = OC_Util::formatDate(1350129205, false);
$expected = 'October 13, 2012 at 2:53:25 PM GMT+3';
$this->assertEquals($expected, $result);
$this->setDateFormatter($oldDateTimeFormatter);