177 lines
4.1 KiB
PHP
177 lines
4.1 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Frank Karlitschek
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* @author Jakob Sack
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* @copyright 2012 Frank Karlitschek frank@owncloud.org
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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*
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* An example of config.php
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*
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* <?php
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* $CONFIG = array(
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* "database" => "mysql",
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* "firstrun" => false,
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* "pi" => 3.14
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* );
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* ?>
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*
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*/
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/**
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* This class is responsible for reading and writing config.php, the very basic
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* configuration file of owncloud.
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*/
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class OC_Config{
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// associative array key => value
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private static $cache = array();
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// Is the cache filled?
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private static $init = false;
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/**
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* @brief Lists all available config keys
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* @returns array with key names
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*
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* This function returns all keys saved in config.php. Please note that it
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* does not return the values.
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*/
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public static function getKeys(){
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self::readData();
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return array_keys( self::$cache );
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}
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/**
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* @brief Gets a value from config.php
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* @param $key key
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* @param $default = null default value
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* @returns the value or $default
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*
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* This function gets the value from config.php. If it does not exist,
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* $default will be returned.
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*/
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public static function getValue( $key, $default = null ){
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self::readData();
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if( array_key_exists( $key, self::$cache )){
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return self::$cache[$key];
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}
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return $default;
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}
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/**
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* @brief Sets a value
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* @param $key key
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* @param $value value
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* @returns true/false
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*
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* This function sets the value and writes the config.php. If the file can
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* not be written, false will be returned.
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*/
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public static function setValue( $key, $value ){
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self::readData();
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// Add change
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self::$cache[$key] = $value;
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// Write changes
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self::writeData();
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return true;
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}
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/**
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* @brief Removes a key from the config
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* @param $key key
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* @returns true/false
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*
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* This function removes a key from the config.php. If owncloud has no
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* write access to config.php, the function will return false.
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*/
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public static function deleteKey( $key ){
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self::readData();
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if( array_key_exists( $key, self::$cache )){
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// Delete key from cache
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unset( self::$cache[$key] );
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// Write changes
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self::writeData();
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}
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return true;
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}
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/**
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* @brief Loads the config file
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* @returns true/false
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*
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* Reads the config file and saves it to the cache
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*/
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private static function readData(){
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if( self::$init ){
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return true;
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}
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if( !file_exists( OC::$SERVERROOT."/config/config.php" )){
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return false;
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}
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// Include the file, save the data from $CONFIG
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include( OC::$SERVERROOT."/config/config.php" );
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if( isset( $CONFIG ) && is_array( $CONFIG )){
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self::$cache = $CONFIG;
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}
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// We cached everything
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self::$init = true;
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return true;
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}
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/**
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* @brief Writes the config file
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* @returns true/false
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*
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* Saves the config to the config file.
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*
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*/
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public static function writeData(){
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// Create a php file ...
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$content = "<?php\n\$CONFIG = ";
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$content .= var_export(self::$cache, true);
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$content .= ";\n?>\n";
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$filename = OC::$SERVERROOT."/config/config.php";
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// Write the file
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$result=@file_put_contents( $filename, $content );
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if(!$result) {
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$tmpl = new OC_Template( '', 'error', 'guest' );
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$tmpl->assign('errors',array(1=>array('error'=>"Can't write into config directory 'config'",'hint'=>"You can usually fix this by giving the webserver user write access to the config directory in owncloud")));
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$tmpl->printPage();
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exit;
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}
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// Prevent others not to read the config
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@chmod($filename, 0640);
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return true;
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}
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}
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