From 50569114acdc64e7c7cae1498635d3f821517c30 Mon Sep 17 00:00:00 2001
From: Daniel Lange <DLange@git.local>
Date: Mon, 7 Mar 2016 15:53:16 +0100
Subject: Initial commit of the Faster IT roundcube_calendar plugin
 distribution This includes:  * Kolab plugins 3.2.9 (calendar and
 libcalendaring)  * CalDAV driver 3.2.8  * .htaccess files for at least some
 security  * SabreDAV updated to 1.8.12 (Jan 2015 release)  * Support for
 CURLOPT_SSL_* settings to allow self-signed certificates  * Small fixes &
 improved documentation

---
 calendar/lib/SabreDAV/lib/OldSabre/HTTP/Util.php | 82 ++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 calendar/lib/SabreDAV/lib/OldSabre/HTTP/Util.php

(limited to 'calendar/lib/SabreDAV/lib/OldSabre/HTTP/Util.php')

diff --git a/calendar/lib/SabreDAV/lib/OldSabre/HTTP/Util.php b/calendar/lib/SabreDAV/lib/OldSabre/HTTP/Util.php
new file mode 100644
index 0000000..d825ad8
--- /dev/null
+++ b/calendar/lib/SabreDAV/lib/OldSabre/HTTP/Util.php
@@ -0,0 +1,82 @@
+<?php
+
+namespace OldSabre\HTTP;
+
+/**
+ * HTTP utility methods
+ *
+ * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/)
+ * @author Paul Voegler
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class Util {
+
+    /**
+     * Parses a RFC2616-compatible date string
+     *
+     * This method returns false if the date is invalid
+     *
+     * @param string $dateHeader
+     * @return bool|DateTime
+     */
+    static function parseHTTPDate($dateHeader) {
+
+        //RFC 2616 section 3.3.1 Full Date
+        //Only the format is checked, valid ranges are checked by strtotime below
+        $month = '(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)';
+        $weekday = '(Monday|Tuesday|Wednesday|Thursday|Friday|Saturday|Sunday)';
+        $wkday = '(Mon|Tue|Wed|Thu|Fri|Sat|Sun)';
+        $time = '[0-2]\d(\:[0-5]\d){2}';
+        $date3 = $month . ' ([1-3]\d| \d)';
+        $date2 = '[0-3]\d\-' . $month . '\-\d\d';
+        //4-digit year cannot begin with 0 - unix timestamp begins in 1970
+        $date1 = '[0-3]\d ' . $month . ' [1-9]\d{3}';
+
+        //ANSI C's asctime() format
+        //4-digit year cannot begin with 0 - unix timestamp begins in 1970
+        $asctime_date = $wkday . ' ' . $date3 . ' ' . $time . ' [1-9]\d{3}';
+        //RFC 850, obsoleted by RFC 1036
+        $rfc850_date = $weekday . ', ' . $date2 . ' ' . $time . ' GMT';
+        //RFC 822, updated by RFC 1123
+        $rfc1123_date = $wkday . ', ' . $date1 . ' ' . $time . ' GMT';
+        //allowed date formats by RFC 2616
+        $HTTP_date = "($rfc1123_date|$rfc850_date|$asctime_date)";
+
+        //allow for space around the string and strip it
+        $dateHeader = trim($dateHeader, ' ');
+        if (!preg_match('/^' . $HTTP_date . '$/', $dateHeader))
+            return false;
+
+        //append implicit GMT timezone to ANSI C time format
+        if (strpos($dateHeader, ' GMT') === false)
+            $dateHeader .= ' GMT';
+
+
+        $realDate = strtotime($dateHeader);
+        //strtotime can return -1 or false in case of error
+        if ($realDate !== false && $realDate >= 0)
+            return new \DateTime('@' . $realDate, new \DateTimeZone('UTC'));
+
+    }
+
+    /**
+     * Transforms a DateTime object to HTTP's most common date format.
+     *
+     * We're serializing it as the RFC 1123 date, which, for HTTP must be
+     * specified as GMT.
+     *
+     * @param \DateTime $dateTime
+     * @return string
+     */
+    static function toHTTPDate(\DateTime $dateTime) {
+
+        // We need to clone it, as we don't want to affect the existing
+        // DateTime.
+        $dateTime = clone $dateTime;
+        $dateTime->setTimeZone(new \DateTimeZone('GMT'));
+        return $dateTime->format('D, d M Y H:i:s \G\M\T');
+
+    }
+
+}
-- 
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