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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik;
use Piwik\Container\StaticContainer;
use Piwik\Log\LoggerInterface;
/**
* Convenient key-value storage for user specified options and temporary
* data that needs to be persisted beyond one request.
*
* ### Examples
*
* **Setting and getting options**
*
* $optionValue = Option::get('MyPlugin.MyOptionName');
* if ($optionValue === false) {
* // if not set, set it
* Option::set('MyPlugin.MyOptionName', 'my option value');
* }
*
* **Storing user specific options**
*
* $userName = // ...
* Option::set('MyPlugin.MyOptionName.' . $userName, 'my option value');
*
* **Clearing user specific options**
*
* Option::deleteLike('MyPlugin.MyOptionName.%');
*
* @api
*/
class Option
{
/**
* Returns the option value for the requested option `$name`.
*
* @param string $name The option name.
* @return string|false The value or `false`, if not found.
*/
public static function get($name)
{
return self::getInstance()->getValue($name);
}
/**
* Returns option values for options whose names are like a given pattern. Only `%` is supported as part of the
* pattern.
*
* @param string $namePattern The pattern used in the SQL `LIKE` expression
* used to SELECT options.`'%'` characters should be used as wildcard. Underscore match is not supported.
* @return array Array mapping option names with option values.
*/
public static function getLike($namePattern)
{
return self::getInstance()->getNameLike($namePattern);
}
/**
* Sets an option value by name.
*
* @param string $name The option name.
* @param string $value The value to set the option to.
* @param int $autoLoad If set to 1, this option value will be automatically loaded when Piwik is initialized;
* should be set to 1 for options that will be used in every Piwik request.
*/
public static function set($name, $value, $autoload = 0)
{
self::getInstance()->setValue($name, $value, $autoload);
}
/**
* Deletes an option.
*
* @param string $name Option name to match exactly.
* @param string $value If supplied the option will be deleted only if its value matches this value.
*/
public static function delete($name, $value = null)
{
self::getInstance()->deleteValue($name, $value);
}
/**
* Deletes all options that match the supplied pattern. Only `%` is supported as part of the
* pattern.
*
* @param string $namePattern Pattern of key to match. `'%'` characters should be used as wildcard. Underscore match is not supported.
* @param string $value If supplied, options will be deleted only if their value matches this value.
*/
public static function deleteLike($namePattern, $value = null)
{
self::getInstance()->deleteNameLike($namePattern, $value);
}
public static function clearCachedOption($name)
{
self::getInstance()->clearCachedOptionByName($name);
}
/**
* Clears the option value cache and forces a reload from the Database.
* Used in unit tests to reset the state of the object between tests.
*
* @return void
* @ignore
*/
public static function clearCache()
{
$option = self::getInstance();
$option->loaded = false;
$option->all = array();
}
/**
* @var array
*/
private $all = array();
/**
* @var bool
*/
private $loaded = false;
/**
* Singleton instance
* @var \Piwik\Option
*/
private static $instance = null;
/**
* Returns Singleton instance
*
* @return \Piwik\Option
*/
private static function getInstance()
{
if (self::$instance == null) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Sets the singleton instance. For testing purposes.
*
* @param mixed
* @ignore
*/
public static function setSingletonInstance($instance)
{
self::$instance = $instance;
}
/**
* Private Constructor
*/
private function __construct()
{
}
protected function clearCachedOptionByName($name)
{
$name = $this->trimOptionNameIfNeeded($name);
if (isset($this->all[$name])) {
unset($this->all[$name]);
}
}
protected function getValue($name)
{
$name = $this->trimOptionNameIfNeeded($name);
$this->autoload();
if (isset($this->all[$name])) {
return $this->all[$name];
}
$value = \Piwik\Db::fetchOne('SELECT option_value FROM `' . \Piwik\Common::prefixTable('option') . '` ' . 'WHERE option_name = ?', [$name]);
$this->all[$name] = $value;
return $value;
}
protected function setValue($name, $value, $autoLoad = 0)
{
$autoLoad = (int) $autoLoad;
$name = $this->trimOptionNameIfNeeded($name);
$sql = 'UPDATE `' . \Piwik\Common::prefixTable('option') . '` SET option_value = ?, autoload = ? WHERE option_name = ?';
$bind = array($value, $autoLoad, $name);
$result = \Piwik\Db::query($sql, $bind);
$rowsUpdated = \Piwik\Db::get()->rowCount($result);
if (!$rowsUpdated) {
try {
$sql = 'INSERT IGNORE INTO `' . \Piwik\Common::prefixTable('option') . '` (option_name, option_value, autoload) ' . 'VALUES (?, ?, ?) ';
$bind = array($name, $value, $autoLoad);
\Piwik\Db::query($sql, $bind);
} catch (\Exception $e) {
}
}
$this->all[$name] = $value;
}
protected function deleteValue($name, $value)
{
$name = $this->trimOptionNameIfNeeded($name);
$sql = 'DELETE FROM `' . \Piwik\Common::prefixTable('option') . '` WHERE option_name = ?';
$bind[] = $name;
if (isset($value)) {
$sql .= ' AND option_value = ?';
$bind[] = $value;
}
\Piwik\Db::query($sql, $bind);
$this->clearCache();
}
protected function deleteNameLike($name, $value = null)
{
$name = $this->trimOptionNameIfNeeded($name);
$name = $this->getNameForLike($name);
$sql = 'DELETE FROM `' . \Piwik\Common::prefixTable('option') . '` WHERE option_name LIKE ?';
$bind[] = $name;
if (isset($value)) {
$sql .= ' AND option_value = ?';
$bind[] = $value;
}
\Piwik\Db::query($sql, $bind);
$this->clearCache();
}
private function getNameForLike($name)
{
$name = str_replace('\\_', '###NOREPLACE###', $name);
$name = str_replace('_', '\\_', $name);
$name = str_replace('###NOREPLACE###', '\\_', $name);
return $name;
}
protected function getNameLike($name)
{
$name = $this->trimOptionNameIfNeeded($name);
$name = $this->getNameForLike($name);
$sql = 'SELECT option_name, option_value FROM `' . \Piwik\Common::prefixTable('option') . '` WHERE option_name LIKE ?';
$bind = array($name);
$rows = \Piwik\Db::fetchAll($sql, $bind);
$result = array();
foreach ($rows as $row) {
$result[$row['option_name']] = $row['option_value'];
}
return $result;
}
/**
* Initialize cache with autoload settings.
*
* @return void
*/
protected function autoload()
{
if ($this->loaded) {
return;
}
$table = \Piwik\Common::prefixTable('option');
$sql = 'SELECT option_value, option_name FROM `' . $table . '` WHERE autoload = 1';
$all = \Piwik\Db::fetchAll($sql);
foreach ($all as $option) {
$this->all[$option['option_name']] = $option['option_value'];
}
$this->loaded = true;
}
private function trimOptionNameIfNeeded($name)
{
if (strlen($name) > 191) {
StaticContainer::get(LoggerInterface::class)->debug("Option name '{$name}' is too long and was trimmed to 191 chars");
$name = substr($name, 0, 191);
}
return $name;
}
}