mirror of
https://github.com/EGroupware/egroupware.git
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314 lines
7.8 KiB
PHP
Executable File
314 lines
7.8 KiB
PHP
Executable File
<?php
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/**
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* eGW's application configuration in a centralized location
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*
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* This allows eGroupWare to use php or database sessions
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*
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* @link www.egroupware.org
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* @author Joseph Engo <jengo@phpgroupware.org> original class Copyright (C) 2000, 2001 Joseph Engo
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* @author Ralf Becker <ralfbecker@outdoor-training.de>
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* @version $Id$
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*/
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/**
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* eGW's application configuration in a centralized location
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*/
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class config
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{
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/**
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* Name of the config table
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*
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*/
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const TABLE = 'egw_config';
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/**
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* Reference to the global db class
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*
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* @var egw_db
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*/
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static private $db;
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/**
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* Cache for the config data shared by all instances of this class
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*
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* @var array
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*/
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static private $configs = array();
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/**
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* app the particular config class is instanciated for
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*
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* @var string
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*/
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private $appname;
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/**
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* actual config-data of the instanciated class
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*
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* @deprecated dont use direct
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* @var array
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*/
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public $config_data;
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/**
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* Constructor for the old non-static use
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*
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* @param string $appname
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*/
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function __construct($appname = '')
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{
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if (!$appname)
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{
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$appname = $GLOBALS['egw_info']['flags']['currentapp'];
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}
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$this->appname = $appname;
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}
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/**
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* reads the whole repository for $this->appname, appname has to be set via the constructor
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*
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* You can also use the static config::read($app) method, without instanciating the class.
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*
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* @return array the whole config-array for that app
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*/
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function read_repository()
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{
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$this->config_data = self::read($this->appname);
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//echo __CLASS__.'::'.__METHOD__."() this->appname=$this->appname\n"; _debug_array($this->config_data);
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return $this->config_data;
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}
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/**
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* updates the whole repository for $this->appname, you have to call read_repository() before (!)
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*/
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function save_repository()
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{
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if (!is_object(self::$db))
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{
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self::init_db();
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}
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if (is_array($this->config_data))
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{
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self::$db->lock(array(config::TABLE));
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foreach($this->config_data as $name => $value)
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{
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$this->save_value($name,$value);
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}
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foreach(self::$configs[$this->appname] as $name => $value)
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{
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if (!isset($this->config_data[$name])) // has been deleted
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{
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self::$db->delete(config::TABLE,array('config_app'=>$this->appname,'config_name'=>$name),__LINE__,__FILE__);
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}
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}
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self::$db->unlock();
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if ($this->appname == 'phpgwapi' && method_exists($GLOBALS['egw'],'invalidate_session_cache')) // egw object in setup is limited
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{
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$GLOBALS['egw']->invalidate_session_cache(); // in case egw_info is cached in the session (phpgwapi is in egw_info[server])
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}
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self::$configs[$this->appname] = $this->config_data;
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}
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}
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/**
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* updates or insert a single config-value direct into the database
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*
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* Can be used static, if $app given!
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*
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* @param string $name name of the config-value
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* @param mixed $value content, empty or null values are not saved, but deleted
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* @param string $app=null app-name, defaults to $this->appname set via the constructor
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*/
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/* static */ function save_value($name,$value,$app=null)
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{
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if (!$app && !isset($this))
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{
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throw new egw_exception_assertion_failed('$app parameter required for static call of config::save_value($name,$value,$app)!');
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}
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//echo "<p>config::save_value('$name','".print_r($value,True)."','$app')</p>\n";
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if (!$app || isset($this) && is_a($this,'config') && $app == $this->appname)
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{
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$this->config_data[$name] = $value;
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}
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//echo "<p>config::save_value('$name','".print_r($value,True)."','$app')</p>\n";
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if (isset(self::$configs[$app][$name]) && self::$configs[$app][$name] === $value)
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{
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return True; // no change ==> exit
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}
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if (isset(self::$configs[$app]))
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{
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self::$configs[$app][$name] = $value;
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}
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if(is_array($value))
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{
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$value = serialize($value);
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}
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if (!is_object(self::$db))
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{
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self::init_db();
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}
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if (!isset($value) || $value === '')
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{
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if (isset(self::$configs[$app])) unset(self::$configs[$app][$name]);
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return self::$db->delete(config::TABLE,array('config_app'=>$app,'config_name'=>$name),__LINE__,__FILE__);
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}
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return self::$db->insert(config::TABLE,array('config_value'=>$value),array('config_app'=>$app,'config_name'=>$name),__LINE__,__FILE__);
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}
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/**
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* deletes the whole repository for $this->appname, appname has to be set via the constructor
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*
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*/
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function delete_repository()
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{
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if (!is_object(self::$db))
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{
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self::init_db();
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}
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self::$db->delete(config::TABLE,array('config_app' => $this->appname),__LINE__,__FILE__);
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unset(self::$configs[$this->appname]);
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}
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/**
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* deletes a single value from the repository, you need to call save_repository after
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*
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* @param $variable_name string name of the config
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*/
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function delete_value($variable_name)
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{
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unset($this->config_data[$variable_name]);
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}
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/**
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* sets a single value in the repositry, you need to call save_repository after
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*
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* @param $variable_name string name of the config
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* @param $variable_data mixed the content
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*/
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function value($variable_name,$variable_data)
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{
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$this->config_data[$variable_name] = $variable_data;
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}
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/**
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* Reads the configuration for an applications
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*
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* Does some caching to not read it twice (in the same request)
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*
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* @param string $app
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* @return array
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*/
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static function read($app)
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{
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$config =& self::$configs[$app];
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if (!isset($config))
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{
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if (!is_object(self::$db))
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{
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self::init_db();
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}
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$config = array();
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foreach(self::$db->select(config::TABLE,'*',array('config_app' => $app),__LINE__,__FILE__) as $row)
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{
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$name = $row['config_name'];
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$value = $row['config_value'];
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$test = @unserialize($value);
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if($test === false)
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{
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// manually retrieve the string lengths of the serialized array if unserialize failed
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$test = @unserialize(preg_replace('!s:(\d+):"(.*?)";!se', "'s:'.mb_strlen('$2','8bit').':\"$2\";'", $value));
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}
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$config[$name] = is_array($test) ? $test : $value;
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}
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}
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return $config;
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}
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/**
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* get customfield array of an application
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*
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* @param string $app
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* @param boolean $all_private_too=false should all the private fields be returned too, default no
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* @return array with customfields
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*/
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static function get_customfields($app,$all_private_too=false)
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{
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$config = self::read($app);
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$config_name = isset($config['customfields']) ? 'customfields' : 'custom_fields';
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$cfs = is_array($config[$config_name]) ? $config[$config_name] : array();
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if (!$all_private_too)
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{
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foreach($cfs as $name => $field)
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{
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if ($field['private'] && !self::_check_private_cf($field['private']))
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{
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unset($cfs[$name]);
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}
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}
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}
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return $cfs;
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}
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/**
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* Check if user is allowed to see a certain private cf
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*
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* @param string $private comma-separated list of user- or group-id's
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* @return boolean true if user has access, false otherwise
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*/
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private static function _check_private_cf($private)
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{
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static $user_and_memberships;
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if (!$private)
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{
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return true;
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}
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if (is_null($user_and_memberships))
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{
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$user_and_memberships = $GLOBALS['egw']->accounts->memberships($GLOBALS['egw_info']['user']['account_id'],true);
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$user_and_memberships[] = $GLOBALS['egw_info']['user']['account_id'];
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}
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if (!is_array($private)) $private = explode(',',$private);
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return (boolean) array_intersect($private,$user_and_memberships);
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}
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/**
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* get_content_types of using application
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*
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* @param string $app
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* @return array with content-types
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*/
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static function get_content_types($app)
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{
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$config = self::read($app);
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return is_array($config['types']) ? $config['types'] : array();
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}
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/**
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* Initialise our db
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*
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* We use a reference here (no clone), as we no longer use egw_db::row() or egw_db::next_record()!
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*
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*/
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private static function init_db()
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{
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if (is_object($GLOBALS['egw']->db))
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{
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config::$db = $GLOBALS['egw']->db;
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}
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else
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{
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config::$db = $GLOBALS['egw_setup']->db;
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}
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}
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}
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