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-rw-r--r--library/Icinga/Util/TimezoneDetect.php107
1 files changed, 107 insertions, 0 deletions
diff --git a/library/Icinga/Util/TimezoneDetect.php b/library/Icinga/Util/TimezoneDetect.php
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+<?php
+/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Util;
+
+/**
+ * Retrieve timezone information from cookie
+ */
+class TimezoneDetect
+{
+ /**
+ * If detection was successful
+ *
+ * @var bool
+ */
+ private static $success;
+
+ /**
+ * Timezone offset in minutes
+ *
+ * @var int
+ */
+ private static $offset = 0;
+
+ /**
+ * @var string
+ */
+ private static $timezoneName;
+
+ /**
+ * Cookie name
+ *
+ * @var string
+ */
+ public static $cookieName = 'icingaweb2-tzo';
+
+ /**
+ * Timezone name
+ *
+ * @var string
+ */
+ private static $timezone;
+
+ /**
+ * Create new object and try to identify the timezone
+ */
+ public function __construct()
+ {
+ if (self::$success !== null) {
+ return;
+ }
+
+ if (array_key_exists(self::$cookieName, $_COOKIE)) {
+ $matches = array();
+ if (preg_match('/\A(-?\d+)[\-,](\d+)\z/', $_COOKIE[self::$cookieName], $matches)) {
+ $offset = $matches[1];
+ $timezoneName = timezone_name_from_abbr('', (int) $offset, (int) $matches[2]);
+
+ self::$success = (bool) $timezoneName;
+ if (self::$success) {
+ self::$offset = $offset;
+ self::$timezoneName = $timezoneName;
+ }
+ }
+ }
+ }
+
+ /**
+ * Get offset
+ *
+ * @return int
+ */
+ public function getOffset()
+ {
+ return self::$offset;
+ }
+
+ /**
+ * Get timezone name
+ *
+ * @return string
+ */
+ public function getTimezoneName()
+ {
+ return self::$timezoneName;
+ }
+
+ /**
+ * True on success
+ *
+ * @return bool
+ */
+ public function success()
+ {
+ return self::$success;
+ }
+
+ /**
+ * Reset object
+ */
+ public function reset()
+ {
+ self::$success = null;
+ self::$timezoneName = null;
+ self::$offset = 0;
+ }
+}