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phorge-phorge/src/view/viewutils.php
epriestley b12f13efd8 Force date/time preferences to valid values
Summary:
Fixes T8601. To reproduce the problem:

  - Set your time preference to `""` (the empty string). This isn't possible from the modern UI, but can be done with "Right Click > Inspect Element", or users may have carried it forward from an older setting (this is the case with me and @hach-que on this install).
  - Load Calendar with some events.
  - This parses an epoch, which sets `valueTime` to `""` (since there are no format characters in the preference) and then `getEpoch()` fails because `strlen($time)` is 0.
  - Since `getEpoch()` failed, `getDateTime()` also fails.

To fix this:

  - Only permit the date and time preferences to have valid values.

Test Plan:
  - Loaded page before patch, saw fatal.
  - Applied patch.
  - No more fatal.
  - Viewed tooltips, dates/times, dates/times in other apps.
  - Changed my preferences, saw them respected.

Reviewers: lpriestley

Reviewed By: lpriestley

Subscribers: epriestley, hach-que

Maniphest Tasks: T8601

Differential Revision: https://secure.phabricator.com/D13346
2015-06-18 15:11:01 -07:00

94 lines
2.7 KiB
PHP

<?php
function phabricator_date($epoch, PhabricatorUser $user) {
return phabricator_format_local_time(
$epoch,
$user,
phutil_date_format($epoch));
}
function phabricator_relative_date($epoch, $user, $on = false) {
static $today;
static $yesterday;
if (!$today || !$yesterday) {
$now = time();
$today = phabricator_date($now, $user);
$yesterday = phabricator_date($now - 86400, $user);
}
$date = phabricator_date($epoch, $user);
if ($date === $today) {
return 'today';
}
if ($date === $yesterday) {
return 'yesterday';
}
return (($on ? 'on ' : '').$date);
}
function phabricator_time($epoch, $user) {
$time_key = PhabricatorUserPreferences::PREFERENCE_TIME_FORMAT;
return phabricator_format_local_time(
$epoch,
$user,
$user->getPreference($time_key));
}
function phabricator_datetime($epoch, $user) {
$time_key = PhabricatorUserPreferences::PREFERENCE_TIME_FORMAT;
return phabricator_format_local_time(
$epoch,
$user,
pht('%s, %s',
phutil_date_format($epoch),
$user->getPreference($time_key)));
}
/**
* This function does not usually need to be called directly. Instead, call
* @{function:phabricator_date}, @{function:phabricator_time}, or
* @{function:phabricator_datetime}.
*
* @param int Unix epoch timestamp.
* @param PhabricatorUser User viewing the timestamp.
* @param string Date format, as per DateTime class.
* @return string Formatted, local date/time.
*/
function phabricator_format_local_time($epoch, $user, $format) {
if (!$epoch) {
// If we're missing date information for something, the DateTime class will
// throw an exception when we try to construct an object. Since this is a
// display function, just return an empty string.
return '';
}
$user_zone = $user->getTimezoneIdentifier();
static $zones = array();
if (empty($zones[$user_zone])) {
$zones[$user_zone] = new DateTimeZone($user_zone);
}
$zone = $zones[$user_zone];
// NOTE: Although DateTime takes a second DateTimeZone parameter to its
// constructor, it ignores it if the date string includes timezone
// information. Further, it treats epoch timestamps ("@946684800") as having
// a UTC timezone. Set the timezone explicitly after constructing the object.
try {
$date = new DateTime('@'.$epoch);
} catch (Exception $ex) {
// NOTE: DateTime throws an empty exception if the format is invalid,
// just replace it with a useful one.
throw new Exception(
pht("Construction of a DateTime() with epoch '%s' ".
"raised an exception.", $epoch));
}
$date->setTimeZone($zone);
return PhutilTranslator::getInstance()->translateDate($format, $date);
}