From 04123643da499bac9eed8e8d1198a4c69148075f Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Wed, 21 May 2014 18:41:25 +0200
Subject: Server Setup page

---
 inc/property.inc.php | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 inc/property.inc.php

(limited to 'inc/property.inc.php')

diff --git a/inc/property.inc.php b/inc/property.inc.php
new file mode 100644
index 00000000..a1c252a5
--- /dev/null
+++ b/inc/property.inc.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * Get or set simple key-value-pairs, backed by the database
+ * to make them persistent.
+ */
+class Property
+{
+	private static $cache = false;
+	
+	/**
+	 * Retrieve value from property store.
+	 *
+	 * @param string $key key to retrieve the value of
+	 * @param mixed $default value to return if $key does not exist in the property store
+	 * @return mixed the value attached to $key, or $default if $key does not exist
+	 */
+	private static function get($key, $default = false)
+	{
+		if (self::$cache === false) {
+			$res = Database::simpleQuery("SELECT name, value FROM property");
+			while ($row = $res->fetch(PDO::FETCH_ASSOC)) {
+				self::$cache[$row['name']] = $row['value'];
+			}
+		}
+		if (!isset(self::$cache[$key])) return $default;
+		return self::$cache[$key];
+	}
+	
+	/**
+	 * Set value in property store.
+	 *
+	 * @param string $key key of value to set
+	 * @param type $value the value to store for $key
+	 */
+	private static function set($key, $value)
+	{
+		Database::exec("INSERT INTO property (name, value) VALUES (:key, :value)"
+			. " ON DUPLICATE KEY UPDATE value = VALUES(value)", array(
+				'key' => $key,
+				'value' => $value
+			));
+		if (self::$cache !== false) {
+			self::$cache[$key] = $value;
+		}
+	}
+	
+	public static function getServerIp()
+	{
+		return self::get('server-ip', 'none');
+	}
+	
+	public static function setServerIp($value)
+	{
+		self::set('server-ip', $value);
+	}
+
+}
\ No newline at end of file
-- 
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