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<?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 $key does not exist
*/
public static function get($key, $default = false)
{
if (self::$cache === false) {
$NOW = time();
$res = Database::simpleQuery("SELECT name, dateline, value FROM property");
while ($row = $res->fetch(PDO::FETCH_ASSOC)) {
if ($row['dateline'] != 0 && $row['dateline'] < $NOW)
continue;
self::$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 string $value the value to store for $key
* @param int $maxAgeMinutes how long to keep this entry around at least, in minutes. 0 for infinite
*/
public static function set($key, $value, $maxAgeMinutes = 0)
{
if (self::$cache === false || self::get($key) != $value) { // Simple compare, so it works for numbers accidentally casted to string somewhere
Database::exec("INSERT INTO property (name, value, dateline) VALUES (:key, :value, :dateline)"
. " ON DUPLICATE KEY UPDATE value = VALUES(value), dateline = VALUES(dateline)", array(
'key' => $key,
'value' => $value,
'dateline' => ($maxAgeMinutes === 0 ? 0 : time() + ($maxAgeMinutes * 60))
));
}
if (self::$cache !== false) {
self::$cache[$key] = $value;
}
}
/**
* Retrieve property list from the store.
*
* @param string $key Key of list to get all items for
* @return array All the items matching the key
*/
public static function getList($key)
{
$res = Database::simpleQuery("SELECT dateline, value FROM property_list WHERE name = :key", compact('key'));
$NOW = time();
$return = array();
while ($row = $res->fetch(PDO::FETCH_ASSOC)) {
if ($row['dateline'] != 0 && $row['dateline'] < $NOW)
continue;
$return[] = $row['value'];
}
return $return;
}
/**
* Add item to property list.
*
* @param string $key key of value to set
* @param string $value the value to add for $key
* @param int $maxAgeMinutes how long to keep this entry around at least, in minutes. 0 for infinite
*/
public static function addToList($key, $value, $maxAgeMinutes = 0)
{
Database::exec("INSERT INTO property_list (name, value, dateline) VALUES (:key, :value, :dateline)", array(
'key' => $key,
'value' => $value,
'dateline' => ($maxAgeMinutes === 0 ? 0 : time() + ($maxAgeMinutes * 60))
));
}
/**
* Remove given item from property list. If the list contains this item
* multiple times, they will all be removed.
*
* @param string $key Key of list
* @param string $value item to remove
* @return int number of items removed
*/
public static function removeFromList($key, $value)
{
return Database::exec("DELETE FROM property_list WHERE name = :key AND value = :value", array(
'key' => $key,
'value' => $value,
));
}
/**
* Delete entire list with given key.
*
* @param string $key Key of list
* @return int number of items removed
*/
public static function clearList($key)
{
return Database::exec("DELETE FROM property_list WHERE name = :key", compact('key'));
}
/*
* Legacy getters/setters
*/
public static function getServerIp()
{
return self::get('server-ip', 'none');
}
public static function setServerIp($value, $automatic = false)
{
if ($value === self::getServerIp())
return false;
EventLog::info('Server IP changed from ' . self::getServerIp() . ' to ' . $value . ($automatic ? ' (auto detected)' : ''));
self::set('server-ip', $value);
Event::serverIpChanged();
return true;
}
public static function getBootMenu()
{
return json_decode(self::get('ipxe-menu'), true);
}
public static function setBootMenu($value)
{
self::set('ipxe-menu', json_encode($value));
}
public static function getVmStoreConfig()
{
return json_decode(self::get('vmstore-config'), true);
}
public static function getVmStoreUrl()
{
$store = self::getVmStoreConfig();
if (!isset($store['storetype']))
return false;
if ($store['storetype'] === 'nfs')
return $store['nfsaddr'];
if ($store['storetype'] === 'cifs')
return $store['cifsaddr'];
if ($store['storetype'] === 'internal')
return '<local>';
return '<unknown>';
}
public static function setVmStoreConfig($value)
{
self::set('vmstore-config', json_encode($value));
}
public static function getDownloadTask($name)
{
return self::get('dl-' . $name);
}
public static function setDownloadTask($name, $taskId)
{
self::set('dl-' . $name, $taskId, 5);
}
public static function getCurrentSchemaVersion()
{
return self::get('webif-version');
}
public static function setLastWarningId($id)
{
self::set('last-warn-event-id', $id);
}
public static function getLastWarningId()
{
return self::get('last-warn-event-id', 0);
}
public static function setNeedsSetup($value)
{
self::set('needs-setup', $value);
}
public static function getNeedsSetup()
{
return self::get('needs-setup');
}
public static function setPasswordFieldType($value)
{
self::set('password-type', $value);
}
public static function getPasswordFieldType()
{
return self::get('password-type', 'password');
}
}
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