1 files changed, 107 insertions, 0 deletions
diff --git a/library/Icinga/Util/TimezoneDetect.php b/library/Icinga/Util/TimezoneDetect.php
new file mode 100644
index 0000000..4967c7f
--- /dev/null
+++ b/library/Icinga/Util/TimezoneDetect.php
@@ -0,0 +1,107 @@
+<?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;
+    }
+}