--- a/includes/functions.php Mon Sep 29 08:24:26 2008 -0400
+++ b/includes/functions.php Sun Nov 09 14:22:03 2008 -0500
@@ -271,31 +271,117 @@
if ( !is_int($timestamp) && !is_double($timestamp) && strval(intval($timestamp)) !== $timestamp )
$timestamp = time();
- /*
- // List of valid characters for date()
- $date_chars = 'dDjlNSwzWFmMntLoYyaABgGhHisueIOPTZFcrU';
- // Split them into an array
- $date_chars = enano_str_split($date_chars);
- // Emulate date() formatting by replacing date characters with their
- // percentage-signed counterparts, but not escaped characters which
- // shouldn't be parsed.
- foreach ( $date_chars as $char )
- {
- $string = str_replace($char, "%$char", $string);
- $string = str_replace("\\%$char", $char, $string);
- }
- */
-
// perform timestamp offset
global $timezone;
// it's gonna be in minutes, so multiply by 60 to offset the unix timestamp
$timestamp = $timestamp + ( $timezone * 60 );
+ // are we in DST?
+ global $dst_params;
+ if ( check_timestamp_dst($timestamp, $dst_params[0], $dst_params[1], $dst_params[2], $dst_params[3]) )
+ {
+ // offset for DST
+ $timestamp += ( $dst_params[4] * 60 );
+ }
+
// Let PHP do the work for us =)
return gmdate($string, $timestamp);
}
/**
+ * Determine if a timestamp is within DST.
+ * @param int Timestamp
+ * @param int Start month (1-12) of DST
+ * @param int Which Sunday DST starts on (*_SUNDAY constants)
+ * @param int End month of DST
+ * @param int Which Sunday DST ends on
+ * @return bool
+ */
+
+function check_timestamp_dst($time, $start_month, $start_sunday, $end_month, $end_sunday)
+{
+ static $sundays = array(FIRST_SUNDAY, SECOND_SUNDAY, THIRD_SUNDAY, LAST_SUNDAY);
+
+ // perform timestamp offset
+ global $timezone;
+ // it's gonna be in minutes, so multiply by 60 to offset the unix timestamp
+ $time = $time + ( $timezone * 60 );
+ $year = intval(gmdate('Y', $time));
+
+ // one-pass validation
+ if ( !in_array($start_sunday, $sundays) || !in_array($end_sunday, $sundays) ||
+ $start_month < 1 || $start_month > 12 || $end_month < 1 || $end_month > 12 )
+ return false;
+
+ // get timestamp of the selected sunday (start)
+ $dst_start = get_sunday_timestamp($start_month, $start_sunday, $year);
+ $dst_end = get_sunday_timestamp($end_month, $end_sunday, $year);
+
+ if ( $dst_start > $dst_end )
+ {
+ // start time is past the end time, this means we're in the southern hemisphere
+ // as a result, if we're within the range, DST is NOT in progress.
+ return !( $time >= $dst_start && $time <= $dst_end );
+ }
+
+ return $time >= $dst_start && $time <= $dst_end;
+}
+
+/**
+ * Returns a timestamp for the given *_SUNDAY index.
+ * @param int Month
+ * @param int Which Sunday (FIRST, SECOND, THIRD, or LAST)
+ * @param int Year that we're doing our calculations in
+ * @return int
+ */
+
+function get_sunday_timestamp($month, $sunday, $year)
+{
+ $days_in_month = array(
+ 1 => 31,
+ 2 => $year % 4 == 0 && ( $year % 100 != 0 || ( $year % 100 == 0 && $year % 400 == 0 ) ) ? 29 : 28,
+ 3 => 31,
+ 4 => 30,
+ 5 => 31,
+ 6 => 30,
+ 7 => 31,
+ 8 => 31,
+ 9 => 30,
+ 10 => 31,
+ 11 => 30,
+ 12 => 31
+ );
+
+ $result = mktime(0, 0, 0, $month, 1, $year);
+
+ // hack. allows a specific day of the month to be set instead of a sunday. not a good place to do this.
+ if ( is_string($sunday) && substr($sunday, -1) === 'd' )
+ {
+ $result += 86400 * ( intval($sunday) - 1);
+ return $result;
+ }
+
+ $tick = 0;
+ $days_remaining = $days_in_month[$month];
+ while ( true )
+ {
+ if ( date('D', $result) == 'Sun' )
+ {
+ $tick++;
+ if ( ( $tick == 1 && $sunday == FIRST_SUNDAY ) ||
+ ( $tick == 2 && $sunday == SECOND_SUNDAY ) ||
+ ( $tick == 3 && $sunday == THIRD_SUNDAY ) ||
+ ( $sunday == LAST_SUNDAY && $days_remaining < 7 ) )
+ break;
+ }
+ $days_remaining--;
+ $result += 86400;
+ }
+
+ return $result;
+}
+
+/**
* Tells you the title for the given page ID string
* @param string Page ID string (ex: Special:Administration)
* @param bool Optional. If true, and if the namespace turns out to be something other than Article, the namespace prefix will be prepended to the return value.
@@ -2851,9 +2937,9 @@
function is_valid_ip($ip)
{
- // These came from phpBB3.
+ // This next one came from phpBB3.
$ipv4 = '(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])';
- $ipv6 = '(?:(?:(?:[\dA-F]{1,4}:){6}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:::(?:[\dA-F]{1,4}:){5}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:):(?:[\dA-F]{1,4}:){4}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,2}:(?:[\dA-F]{1,4}:){3}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,3}:(?:[\dA-F]{1,4}:){2}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,4}:(?:[\dA-F]{1,4}:)(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,5}:(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,6}:[\dA-F]{1,4})|(?:(?:[\dA-F]{1,4}:){1,7}:))';
+ $ipv6 = '(?:[a-f0-9]{0,4}):(?:[a-f0-9]{0,4}):(?:[a-f0-9]{0,4}:|:)?(?:[a-f0-9]{0,4}:|:)?(?:[a-f0-9]{0,4}:|:)?(?:[a-f0-9]{0,4}:|:)?(?:[a-f0-9]{0,4}:|:)?(?:[a-f0-9]{1,4})';
if ( preg_match("/^{$ipv4}$/", $ip) || preg_match("/^{$ipv6}$/", $ip) )
return true;