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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @author Jakob Sack
* @copyright 2012 Frank Karlitschek frank@owncloud.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
*
* An example of config.php
*
* <?php
* $CONFIG = array(
* "database" => "mysql",
* "firstrun" => false,
* "pi" => 3.14
* );
* ?>
*
*/
namespace OC;
/**
* This class is responsible for reading and writing config.php, the very basic
* configuration file of ownCloud.
*/
class Config {
// associative array key => value
protected $cache = array();
protected $configDir;
protected $configFilename;
protected $debugMode;
/**
* @param string $configDir path to the config dir, needs to end with '/'
*/
public function __construct($configDir) {
$this->configDir = $configDir;
$this->configFilename = $this->configDir.'config.php';
$this->readData();
$this->setDebugMode(defined('DEBUG') && DEBUG);
}
public function setDebugMode($enable) {
$this->debugMode = $enable;
}
/**
* @brief Lists all available config keys
* @return array with key names
*
* This function returns all keys saved in config.php. Please note that it
* does not return the values.
*/
public function getKeys() {
return array_keys($this->cache);
}
/**
* @brief Gets a value from config.php
* @param string $key key
* @param array|bool|string|null $default = null default value
* @return string the value or $default
*
* This function gets the value from config.php. If it does not exist,
* $default will be returned.
*/
public function getValue($key, $default = null) {
if (isset($this->cache[$key])) {
return $this->cache[$key];
}
return $default;
}
/**
* @brief Sets a value
* @param string $key key
* @param string $value value
*
* This function sets the value and writes the config.php.
*
*/
public function setValue($key, $value) {
// Add change
$this->cache[$key] = $value;
// Write changes
$this->writeData();
}
/**
* @brief Removes a key from the config
* @param string $key key
*
* This function removes a key from the config.php.
*
*/
public function deleteKey($key) {
if (isset($this->cache[$key])) {
// Delete key from cache
unset($this->cache[$key]);
// Write changes
$this->writeData();
}
}
/**
* @brief Loads the config file
*
* Reads the config file and saves it to the cache
*/
private function readData() {
// Default config
$configFiles = array($this->configFilename);
// Add all files in the config dir ending with config.php
$extra = glob($this->configDir.'*.config.php');
if (is_array($extra)) {
natsort($extra);
$configFiles = array_merge($configFiles, $extra);
}
// Include file and merge config
foreach ($configFiles as $file) {
if (!file_exists($file)) {
continue;
}
unset($CONFIG);
// ignore errors on include, this can happen when doing a fresh install
@include $file;
if (isset($CONFIG) && is_array($CONFIG)) {
$this->cache = array_merge($this->cache, $CONFIG);
}
}
}
/**
* @brief Writes the config file
*
* Saves the config to the config file.
*
*/
private function writeData() {
// Create a php file ...
$content = "<?php\n";
if ($this->debugMode) {
$content .= "define('DEBUG',true);\n";
}
$content .= '$CONFIG = ';
$content .= var_export($this->cache, true);
$content .= ";\n";
// Write the file
$result = @file_put_contents($this->configFilename, $content);
if (!$result) {
$defaults = new \OC_Defaults;
$url = \OC_Helper::linkToDocs('admin-dir_permissions');
throw new HintException(
"Can't write into config directory!",
'This can usually be fixed by '
.'<a href="' . $url . '" target="_blank">giving the webserver write access to the config directory</a>.');
}
// Prevent others not to read the config
@chmod($this->configFilename, 0640);
\OC_Util::clearOpcodeCache();
}
}
|
