Code

-Updated jsonRPC calls - use ssl certs
[gosa.git] / gosa-core / include / class_configRegistry.inc
index 416865203d7a8e2957b7606c9ee563207585c981..ee68d2ed46836ec343471604dde32eb23770a94c 100644 (file)
@@ -4,21 +4,302 @@ class configRegistry{
 
     public $config = NULL;
     public $properties = array();
-    public $mapByClass = array();
-    public $mapPropertyToClass = array();
     public $ldapStoredProperties = array(); 
     public $fileStoredProperties = array(); 
     public $classToName = array(); 
 
     public $status = 'none';
 
+    // Excludes property values defined in ldap 
+    public $ignoreLdapProperties = FALSE;
+
+    // Contains all classes with plInfo
+    public $classesWithInfo = array();
+    public $pluginRequirements  = array();
+    public $categoryToClass  = array();
+
+    public $objectClasses = array();
+
+    public $detectedSchemaIssues = array();
+    public $schemaCheckFailed = FALSE;
+    public $schemaCheckFinished = FALSE;
+    public $pluginsDeactivated = array();
+
+    // Name of enabled plugins found in gosa.conf.
+    private $activePlugins = array();
+
+
+    /*! \brief      Constructs the config registry 
+     *  @param      config  The configuration object
+     *  @return     
+     */
     function __construct($config)
     {
-        restore_error_handler();
         $this->config = &$config;
+
+        // Detect classes that have a plInfo method 
+        global $class_mapping;
+        foreach ($class_mapping as $cname => $path){
+            $cmethods = get_class_methods($cname);
+            if (is_array($cmethods) && in_array_ics('plInfo',$cmethods)){
+
+                // Get plugin definitions
+                $def = call_user_func(array($cname, 'plInfo'));;
+
+                // Register Post Events (postmodfiy,postcreate,postremove,checkhook)
+                if(count($def)){
+                    $this->classesWithInfo[$cname] = $def;
+                }
+            }
+        }
+
+        // (Re)Load properties
         $this->reload();
     }
 
+    
+    /*! \brief      Returns a list of plugins used by GOsa.
+        @return     Array       An array containing all plugins with theis plInfo data.
+     */
+    function getListOfPlugins()
+    {
+        return($this->classesWithInfo);
+    }
+
+
+    /*! \brief      Checks whether the schema check was called in the current session or not.
+     *  @return     Boolean     True if check was already called
+     */
+    function schemaCheckFinished()
+    {
+        return($this->schemaCheckFinished);
+    }
+
+
+    /*! \brief      Starts the schema validation
+     *  @param      Boolean     'force' Force a re-check.
+     *  @param      Boolean     'disableIncompatiblePlugins' Disables of incompatible GOsa-plugins.
+     *  @return     Boolean     True on success else FALSE
+     */
+    function validateSchemata($force = FALSE, $disableIncompatiblePlugins = FALSE, $objectClassesToUse = array())
+    {
+        // Read objectClasses from ldap
+        if(count($objectClassesToUse)){
+            $this->setObjectClasses($objectClassesToUse);
+        }elseif(!count($this->objectClasses)){
+            $ldap = $this->config->get_ldap_link();
+            $ldap->cd($this->config->current['BASE']);
+            $this->setObjectClasses($ldap->get_objectclasses());
+        }
+
+        return($this->_validateSchemata($force, $disableIncompatiblePlugins));
+    }
+
+
+    /*! \brief      Sets the list object classes to use while validation the schema. (See 'validateSchemata')
+     *              This is called from the GOsa-Setup
+     *  @param      Array       The list of object classes (usually LDAP::get_objectlclasses()).
+     *  @return     void  
+     */
+    function setObjectClasses($ocs)
+    {
+        $this->objectClasses = $ocs;
+    }
+
+
+    /*! \brief      Returns an array which contains all unresolved schemata requirements.
+     *  @return     Array       An array containing all errors/issues  
+     */
+    function getSchemaResults()
+    {
+        return($this->detectedSchemaIssues);
+    }
+
+
+    /*! \brief      This method checks if the installed ldap-schemata matches the plugin requirements.
+     *  @param      Boolean     'force' Force a re-check.
+     *  @param      Boolean     'disableIncompatiblePlugins' Disables of incompatible GOsa-plugins.
+     *  @return     String  
+     */
+    private function _validateSchemata($force = FALSE, $disableIncompatiblePlugins = FALSE)
+    {
+        // We cannot check without readable schema info
+        if(!count($this->objectClasses)){
+            return(TRUE); 
+        }
+
+        // Don't do things twice unless forced
+        if($this->schemaCheckFinished && !$force) return($this->schemaCheckFailed); 
+
+        // Prepare result array
+        $this->detectedSchemaIssues = array();
+        $this->detectedSchemaIssues['missing'] = array();
+        $this->detectedSchemaIssues['versionMismatch'] = array();
+
+        // Clear last results 
+        $this->pluginsDeactivated = array();
+
+        // Collect required schema infos
+        $this->pluginRequirements = array('ldapSchema' => array());
+        $this->categoryToClass = array();
+
+        // Walk through plugins with requirements, but only check for active plugins.
+        foreach($this->classesWithInfo as $cname => $defs){
+            if(isset($defs['plRequirements'])){
+
+                // Check only if required plugin is enabled in gosa.conf
+                // Normally this is the class name itself, but may be overridden
+                //  in plInfo using the plRequirements::activePlugin statement.
+                $requiresActivePlugin = $cname;
+                if(isset($defs['plRequirements']['activePlugin'])){
+                    $requiresActivePlugin = $defs['plRequirements']['activePlugin'];
+                }
+
+                // Only queue checks for active plugins. 
+                if(isset($this->activePlugins[strtolower($requiresActivePlugin)])){
+                    $this->pluginRequirements[$cname] = $defs['plRequirements'];
+                }else{
+                    if($cname == $requiresActivePlugin){
+                        new log("debug","","Skipped schema check for '{$cname}' plugin is inactive!",
+                                array(),'');
+                    }else{
+                        new log("debug","","Skipped schema check for class '{$cname}' skipped,".
+                                    " required plugin '{$requiresActivePlugin}' is inactive!",
+                                array(),'');
+                    }
+                }
+            }
+        }
+
+        // Check schema requirements now        $missing = $invalid = array();
+        foreach($this->pluginRequirements as $cname => $requirements){
+
+            // Check LDAP schema requirements for this plugins
+            $failure = FALSE;
+            if(isset($requirements['ldapSchema'])){
+                foreach($requirements['ldapSchema'] as $oc => $version){
+                    if(!$this->ocAvailable($oc)){
+                        $this->detectedSchemaIssues['missing'][$oc] = $oc;
+                    
+                        $this->schemaCheckFailed = TRUE;
+                        $failure = TRUE;
+
+                        new log("debug","","LDAP objectClass missing '{$oc}'!",
+                                array(),'');
+
+                    }elseif(!empty($version)){
+                        $currentVersion = $this->getObjectClassVersion($oc);
+                        if(!empty($currentVersion) && !$this->ocVersionMatch($version, $currentVersion)){
+                            if($currentVersion == -1){
+                                $currentVersion = _("unknown");
+                            }
+                            $this->detectedSchemaIssues['versionMismatch'][$oc] = 
+                                sprintf(_("%s has version %s but %s is required!"), bold($oc),bold($currentVersion),bold($version));
+                            $this->schemaCheckFailed = TRUE;
+                            $failure = TRUE;
+
+                            new log("debug","","LDAP objectClass version mismatch '{$oc}' ".
+                                    "has '{$currentVersion}' but {$version} required!",
+                                    array(),'');
+                        }
+                    }
+                }
+            }
+
+            // Display corresponding plugins now 
+            if($disableIncompatiblePlugins && $failure && isset($requirements['onFailureDisablePlugin'])){
+                foreach($requirements['onFailureDisablePlugin'] as $name){
+                    $this->pluginsDeactivated[$name] = $name;
+                } 
+            }
+        }
+        $this->schemaCheckFinished =TRUE;
+        session::un_set('plist');
+        return(!$this->schemaCheckFailed);
+    }
+
+    
+    /*! \brief      The function 'validateSchemata' may has disabled some GOsa-Plugins, 
+     *               the list of disabled plugins will be returned here.
+     *  @return     Array       The list of plugins disabled by 'validateSchemata'
+     */
+    function getDisabledPlugins()
+    {
+        return($this->pluginsDeactivated);
+    }
+
+        
+    /*! \brief      Displays an error message with all issues detect during the schema validation.
+     */
+    function displayRequirementErrors()
+    {
+        $message = "";
+        if(count($this->detectedSchemaIssues['missing'])){
+            $message.= "<br>".
+                _("The following object classes are missing:").
+                "<div class='scrollContainer' style='height:100px'>".
+                msgPool::buildList(array_values($this->detectedSchemaIssues['missing'])).
+                "</div>";
+        }    
+        if(count($this->detectedSchemaIssues['versionMismatch'])){
+            $message.= "<br>".
+                _("The following object classes are outdated:").
+                "<div class='scrollContainer' style='height:100px'>".
+                msgPool::buildList(array_values($this->detectedSchemaIssues['versionMismatch'])).
+                "</div>";
+        }    
+        if($message != ""){
+            $message.= "<br>"._("Plugins that require one or more of the object classes above will be disabled until the object classes get updated.");
+            msg_dialog::display(_("Schema validation error"),$message, ERROR_DIALOG);
+        }
+    }
+
+
+    /*! \brief      Checks to version strings (e.g. '>=v2.8' and '2.9')
+     *  @param      String      The required version with operators (e.g. '>=2.8') 
+     *  @param      String      The version to match for withOUT operators (e.g. '2.9') 
+     *  @return     Boolean     True if version matches else false.  
+     */
+    private function ocVersionMatch($required, $installed)
+    {
+        $operator = preg_replace('/^([=<>]*).*$/',"\\1",$required);
+        $required = preg_replace('/^[=<>]*(.*)$/',"\\1",$required);
+        return(version_compare($installed,$required, $operator)); 
+    }
+
+    
+    /*! \brief      Returns the currently installed version of a given object class.
+     *  @param      String      The name of the objectClass to check for. 
+     *  @return     String      The version string of the objectClass (e.g. v2.7) 
+     */
+    function getObjectClassVersion($oc)
+    {
+        if(!isset($this->objectClasses[$oc])){
+            return(NULL);
+        }else{
+            $version = -1; // unknown
+            if(preg_match("/(v[^)]*)/", $this->objectClasses[$oc]['DESC'])){
+                $version = preg_replace('/^.*\(v([^)]*)\).*$/',"\\1", $this->objectClasses[$oc]['DESC']);
+            }
+        }
+        return($version);
+    }
+    
+
+    /*! \brief      Check whether the given object class is available or not. 
+     *  @param      String      The name of the objectClass to check for (e.g. 'mailAccount') 
+     *  @return     Boolean     Returns TRUE if the class exists else FALSE.
+     */
+    function ocAvailable($name)
+    {
+        return(isset($this->objectClasses[$name]));
+    }
+
+
+    /*! \brief      Re-loads the list of installed GOsa-Properties. 
+     *  @param      Boolean     $force   If force is TRUE, the complete properties list is rebuild..
+     */
     function reload($force = FALSE)
     {
         // Do not reload the properties everytime, once we have  
@@ -30,15 +311,24 @@ class configRegistry{
         $this->ldapStoredProperties = array();
         $this->fileStoredProperties = array();
         $this->properties = array();
-        $this->mapByClass = array();
-        $this->mapPropertyToClass = array();
-        
-        // Search for config flags defined in the config file
+        $this->mapByName = array();
+        $this->activePlugins = array('core'=>'core');
+
+        if(!$this->config) return;
+
+        // Search for config flags defined in the config file (TAB section)
         foreach($this->config->data['TABS'] as $tabname => $tabdefs){
             foreach($tabdefs as $info){
 
+                // Put plugin in list of active plugins
+                if(isset($info['CLASS'])){
+                    $class = strtolower($info['CLASS']);
+                    $this->activePlugins[$class] = $class;
+                }
+
                 // Check if the info is valid
                 if(isset($info['NAME']) && isset($info['CLASS'])){
+                    
 
                     // Check if there is nore than just the plugin definition
                     if(count($info) > 2){
@@ -54,6 +344,47 @@ class configRegistry{
             }
         }
 
+        // Search for config flags defined in the config file (MENU section)
+        foreach($this->config->data['MENU'] as $section => $entries){
+            foreach($entries as $entry){
+
+                if(isset($entry['CLASS'])){
+
+                    // Put plugin to active plugins list.
+                    $class = strtolower($entry['CLASS']);
+                    $this->activePlugins[$class] = $class;
+                
+                    if(count($entry) > 2 ){
+                        foreach($entry as $name => $value){
+                            if(!in_array($name, array('CLASS','ACL'))){
+                                $this->fileStoredProperties[strtolower($class)][strtolower($name)] = $value;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        // Search for config flags defined in the config file (MAIN section)
+        foreach($this->config->data['MAIN'] as $name => $value){
+            $this->fileStoredProperties['core'][strtolower($name)] = $value;
+        }
+
+        // Search for config flags defined in the config file (Current LOCATION section)
+        if(isset($this->config->current)){
+            foreach($this->config->current as $name => $value){
+                $this->fileStoredProperties['core'][strtolower($name)] = $value;
+            }
+        }
+
+        // Skip searching for LDAP defined properties if 'ignoreLdapProperties' is set to 'true'
+        //  in the config. 
+        $this->ignoreLdapProperties = FALSE;
+        if(isset($this->fileStoredProperties['core'][strtolower('ignoreLdapProperties')]) && 
+            preg_match("/(true|on)/i", $this->fileStoredProperties['core'][strtolower('ignoreLdapProperties')])){
+            $this->ignoreLdapProperties = TRUE;
+        }
+
         // Search for all config flags defined in the LDAP - BUT only if we ARE logged in. 
         if(!empty($this->config->current['CONFIG'])){
             $ldap = $this->config->get_ldap_link();
@@ -66,63 +397,110 @@ class configRegistry{
                     $this->ldapStoredProperties[$class][$name] = $value;
                 }
             }
-            $this->status = 'finished';
         }
-        global $class_mapping;
-        foreach ($class_mapping as $cname => $path){
-            $cmethods = get_class_methods($cname);
-            if (is_array($cmethods) && in_array_ics('plInfo',$cmethods)){
-
-                // Get plugin definitions
-                $def = call_user_func(array($cname, 'plInfo'));;
-
-                // Register Post Events (postmodfiy,postcreate,postremove,checkhook)
-                if(isset($def['plShortName'])){
-                    $this->classToName[$cname] = $def['plShortName'];
-                    $data = array('name' => 'postcreate','type' => 'string');
-                    $this->register($cname, $data);    
-                    $data = array('name' => 'postremove','type' => 'string');
-                    $this->register($cname, $data);    
-                    $data = array('name' => 'postmodify','type' => 'string');
-                    $this->register($cname, $data);    
-                    $data = array('name' => 'checkhook', 'type' => 'string');
-                    $this->register($cname, $data);    
-                }
 
-                if(isset($def['plProperties'])){
-                    foreach($def['plProperties'] as $property){
-                        $this->register($cname, $property);
-                    }
+        // Register plugin properties.
+        foreach ($this->classesWithInfo as $cname => $def){
+
+            // Detect class name
+            $name = $cname;
+            $name = (isset($def['plShortName'])) ? $def['plShortName'] : $cname;
+            $name = (isset($def['plDescription'])) ? $def['plDescription'] : $cname;
+
+            // Register post events
+            $this->classToName[$cname] = $name;
+            $data = array('name' => 'postcreate','type' => 'command');
+            $this->register($cname, $data);    
+            $data = array('name' => 'postremove','type' => 'command');
+            $this->register($cname, $data);    
+            $data = array('name' => 'postmodify','type' => 'command');
+            $this->register($cname, $data);    
+            $data = array('name' => 'precreate','type' => 'command');
+            $this->register($cname, $data);    
+            $data = array('name' => 'preremove','type' => 'command');
+            $this->register($cname, $data);    
+            $data = array('name' => 'premodify','type' => 'command');
+            $this->register($cname, $data);    
+            $data = array('name' => 'check', 'type' => 'command');
+            $this->register($cname, $data);    
+
+            // Register properties 
+            if(isset($def['plProperties'])){
+                foreach($def['plProperties'] as $property){
+                    $this->register($cname, $property);
                 }
             }
         }
+
+        // We are only finsihed once we are logged in.
+        if(!empty($this->config->current['CONFIG'])){
+            $this->status = 'finished';
+        }
+    }
+
+   
+    /*! \brief      Returns TRUE if the property registration has finished without any error.
+     */ 
+    function propertyInitializationComplete()
+    {
+        return($this->status == 'finished');
     }
 
+
+    /*! \brief      Registers a GOsa-Property and thus makes it useable by GOsa and its plugins.
+     *  @param      String      $class  The name of the class/plugin that wants to register this property.
+     *  @return     Array       $data   An array containing all data set in plInfo['plProperty]
+     */
     function register($class,$data)
     {
         $id = count($this->properties);
         $this->properties[$id] = new gosaProperty($this,$class,$data);
-        $this->mapByName[$class][$data['name']] = $id;
-        $this->mapByClass[$class][] = $id;
-        $this->mapPropertyToClass[$id] = $class;
+        $p = strtolower("{$class}::{$data['name']}");
+        $this->mapByName[$p] = $id;
     }
 
+
+    /*! \brief      Returns all registered properties.
+     *  @return     Array   A list of all properties.
+     */
     public function getAllProperties()
     {
         return($this->properties);
     }
 
+
+    /*! \brief      Checks whether a property exists or not.
+     *  @param      String      $class  The class name (e.g. 'core' or 'mailAccount') 
+     *  @param      String      $name   The property name (e.g. 'sessionTimeout' or 'mailMethod')
+     *  @return     Boolean     TRUE if it exists else FALSE.
+     */
     function propertyExists($class,$name)
-    {
-        return(isset($this->mapByName[$class][$name]));
+    {       
+        $p = strtolower("{$class}::{$name}");
+        return(isset($this->mapByName[$p]));
     }
 
+
+    /*! \brief      Returns the id of a registered property.
+     *  @param      String      $class  The class name (e.g. 'core' or 'mailAccount') 
+     *  @param      String      $name   The property name (e.g. 'sessionTimeout' or 'mailMethod')
+     *  @return     Integer     The id for the given property.  
+     */
     private function getId($class,$name)
     {
-        return($this->mapByName[$class][$name]);    
+        $p = strtolower("{$class}::{$name}");
+        if(!isset($this->mapByName[$p])){
+            return(-1);
+        }       
+        return($this->mapByName[$p]);    
     }
 
+
+    /*! \brief      Returns a given property, if it exists.
+     *  @param      String      $class  The class name (e.g. 'core' or 'mailAccount') 
+     *  @param      String      $name   The property name (e.g. 'sessionTimeout' or 'mailMethod')
+     *  @return     GOsaPropery     The property or 'NULL' if it doesn't exists.
+     */
     function getProperty($class,$name)
     {
         if($this->propertyExists($class,$name)){
@@ -131,6 +509,12 @@ class configRegistry{
         return(NULL); 
     }
 
+
+    /*! \brief      Returns the value for a given property, if it exists.
+     *  @param      String      $class  The class name (e.g. 'core' or 'mailAccount') 
+     *  @param      String      $name   The property name (e.g. 'sessionTimeout' or 'mailMethod')
+     *  @return     GOsaPropery     The property value or an empty string if it doesn't exists.
+     */
     function getPropertyValue($class,$name)
     {   
         if($this->propertyExists($class,$name)){
@@ -140,6 +524,12 @@ class configRegistry{
         return("");
     }
 
+
+    /*! \brief      Set a new value for a given property, if it exists.
+     *  @param      String      $class  The class name (e.g. 'core' or 'mailAccount') 
+     *  @param      String      $name   The property name (e.g. 'sessionTimeout' or 'mailMethod')
+     *  @return     
+     */
     function setPropertyValue($class,$name, $value)
     {   
         if($this->propertyExists($class,$name)){
@@ -148,6 +538,29 @@ class configRegistry{
         }
         return("");
     }
+
+
+    /*! \brief      Save all temporary made property changes and thus make them useable/effective.
+     *  @return     Array       Returns a list of plugins that have to be migrated before they can be saved.
+     */
+    function saveChanges()
+    {
+        $migrate = array();
+        foreach($this->properties as $prop){
+
+            // Is this property modified
+            if(in_array($prop->getStatus(),array('modified','removed'))){
+
+                // Check if we've to migrate something before we can make the changes effective. 
+                if($prop->migrationRequired()){
+                    $migrate[] = $prop;
+                }else{
+                    $prop->save();
+                }
+            }
+        }
+        return($migrate);
+    }
 }
 
 
@@ -156,8 +569,10 @@ class gosaProperty
     protected $name = "";
     protected $class = "";
     protected $value = "";
+    protected $tmp_value = "";  // Used when modified but not saved 
     protected $type = "string";
     protected $default = "";
+    protected $defaults = "";
     protected $description = "";
     protected $check = "";
     protected $migrate = "";
@@ -166,6 +581,8 @@ class gosaProperty
     protected $parent = NULL;
     protected $data = array();
 
+    protected $migrationClass = NULL;
+
     /*!  The current property status
      *     'ldap'       Property is stored in ldap 
      *     'file'       Property is stored in the config file
@@ -175,7 +592,10 @@ class gosaProperty
     protected $status = 'undefined';
 
     protected $attributes = array('name','type','default','description','check',
-            'migrate','mandatory','group');
+            'migrate','mandatory','group','defaults');
+
+
+
 
     function __construct($parent,$classname,$data)
     {
@@ -189,18 +609,244 @@ class gosaProperty
             if(isset($data[$aName])){
                 $this->$aName = $data[$aName];
             }
-        }       
+        }      
+
+        // Initialize with the current value
+        $this->_restoreCurrentValue(); 
+
+    }
+
+    function migrationRequired()
+    {
+        // Instantiate migration class 
+        if(!empty($this->migrate) && $this->migrationClass == NULL){
+            if(!class_available($this->migrate)){
+                trigger_error("Cannot start migration for gosaProperty::'{$this->getName()}' class not found ({$this->migrate})!");
+            }else{
+                $class = $this->migrate;
+                $tmp = new $class($this->parent->config,$this);
+                if(! $tmp instanceof propertyMigration){ 
+                    trigger_error("Cannot start migration for gosaProperty::'{$this->getName()}' doesn't implement propertyMigration!");
+                }else{
+                    $this->migrationClass = $tmp;
+                }
+            }
+        }
+        if(empty($this->migrate) || $this->migrationClass == NULL){
+            return(FALSE);
+        }
+        return($this->migrationClass->checkForIssues());
+    }
+
+    function getMigrationClass()
+    {
+        return($this->migrationClass);
+    }
+
+    function check()
+    {
+        $val = $this->getValue(TRUE);
+        $return = TRUE;
+        if($this->mandatory && empty($val)){
+            $return = FALSE;
+        }
+
+        $check = $this->getCheck();
+        if(!empty($val) && !empty($check)){
+            $res = call_user_func(preg_split("/::/", $this->check),$messages=TRUE, $this->class,$this->name,$val, $this->type);
+            if(!$res){
+                $return = FALSE;
+            }
+        }
+        return($return);
+    }
+
+    static function isBool($message,$class,$name,$value, $type)
+    {
+        $match = in_array($value,array('true','false',''));
+
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            msg_dialog::display(_("Warning"), 
+                    sprintf(_("The value '%s' specified for '%s:%s' is invalid. A bool value is required here!"), 
+                        bold($value),bold($class),bold($name)), 
+                    WARNING_DIALOG);
+        }
+    
+        return($match);
+    }
+
+    static function isString($message,$class,$name,$value, $type)
+    {
+        $match = TRUE;
+    
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            msg_dialog::display(_("Warning"), 
+                    sprintf(_("The value '%s' specified for '%s:%s' is invalid. A string value is required here!"), 
+                        bold($value),bold($class),bold($name)), 
+                    WARNING_DIALOG);
+        }
+
+        return($match);
+    }
+
+    static function isInteger($message,$class,$name,$value, $type)
+    {
+        $match = is_numeric($value) && !preg_match("/[^0-9]/", $value);
+
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            msg_dialog::display(_("Warning"), 
+                    sprintf(_("The value '%s' specified for '%s:%s' is invalid. A numeric value is required here!"), 
+                        bold($value),bold($class),bold($name)), 
+                    WARNING_DIALOG);
+        }
+
+        return($match);
+    }
+
+    static function isPath($message,$class,$name,$value, $type)
+    {
+        $match = preg_match("#^(/[^/]*/){1}#", $value);
+    
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            msg_dialog::display(_("Warning"), 
+                    sprintf(_("The path '%s' specified for '%s:%s' is invalid!"), 
+                        bold($value),bold($class),bold($name)), 
+                    WARNING_DIALOG);
+        }
+
+        return($match);
+    }
 
+    static function isReadablePath($message,$class,$name,$value, $type)
+    {
+        $match = !empty($value)&&is_dir($value)&&is_writeable($value);
+   
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            if(!is_dir($value)){
+                msg_dialog::display(_("Warning"), 
+                        sprintf(_("The folder '%s' specified for '%s:%s' does not exists!"), 
+                            bold($value),bold($class),bold($name)), 
+                        WARNING_DIALOG);
+            }elseif(!is_readable($value)){
+                msg_dialog::display(_("Warning"), 
+                        sprintf(_("The folder '%s' specified for '%s:%s' cannot be used for reading!"), 
+                            bold($value),bold($class),bold($name)), 
+                        WARNING_DIALOG);
+            }
+        }
+
+        return($match);
+    }
+
+    static function isWriteablePath($message,$class,$name,$value, $type)
+    {
+        $match = !empty($value)&&is_dir($value)&&is_writeable($value);
+   
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            if(!is_dir($value)){
+                msg_dialog::display(_("Warning"), 
+                        sprintf(_("The folder '%s' specified for '%s:%s' does not exists!"), 
+                            bold($value),bold($class),bold($name)), 
+                        WARNING_DIALOG);
+            }elseif(!is_writeable($value)){
+                msg_dialog::display(_("Warning"), 
+                        sprintf(_("The folder '%s' specified for '%s:%s' cannot be used for writing!"), 
+                            bold($value),bold($class),bold($name)), 
+                        WARNING_DIALOG);
+            }
+        }
+
+        return($match);
+    }
+
+    static function isReadableFile($message,$class,$name,$value, $type)
+    {
+        $match = !empty($value) && is_readable($value) && is_file($value);
+
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+                
+            if(!is_file($value)){
+                msg_dialog::display(_("Warning"), 
+                        sprintf(_("The file '%s' specified for '%s:%s' does not exists!"), 
+                            bold($value),bold($class),bold($name)), 
+                        WARNING_DIALOG);
+            }elseif(!is_readable($value)){
+                msg_dialog::display(_("Warning"), 
+                        sprintf(_("The file '%s' specified for '%s:%s' cannot be read!"), 
+                            bold($value),bold($class),bold($name)), 
+                        WARNING_DIALOG);
+            }
+        }
+
+        return($match);
+    }
+
+    static function isCommand($message,$class,$name,$value, $type)
+    {
+        $match = TRUE;
+
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            msg_dialog::display(_("Warning"), 
+                    sprintf(_("The command '%s' specified for '%s:%s' is invalid!"), 
+                        bold($value),bold($class),bold($name)), 
+                    WARNING_DIALOG);
+        }
+        
+        return($match);
+    }
+
+    static function isDn($message,$class,$name,$value, $type)
+    {
+        $match = preg_match("/^([a-z]*=[^=,]*,)*[^=]*=[^=]*$/i", $value);
+
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            msg_dialog::display(_("Warning"), 
+                    sprintf(_("The dn '%s' specified for '%s:%s' is invalid!"), 
+                        bold($value),bold($class),bold($name)), 
+                    WARNING_DIALOG);
+        }
+        
+        return($match);
+    }
+
+    static function isRdn($message,$class,$name,$value, $type)
+    {
+        $match = preg_match("/^([a-z]*=[^=,]*,)*[^=]*=[^=,]*,?$/i", $value);
+
+        // Display the reason for failing this check.         
+        if($message && ! $match){
+            msg_dialog::display(_("Warning"), 
+                    sprintf(_("The rdn '%s' specified for '%s:%s' is invalid!"), 
+                        bold($value),bold($class),bold($name)), 
+                    WARNING_DIALOG);
+        }
+        
+        return($match);
+    }
+
+    private function _restoreCurrentValue()
+    {
         // First check for values in the LDAP Database.
         if(isset($this->parent->ldapStoredProperties[$this->class][$this->name])){
             $this->setStatus('ldap');
             $this->value = $this->parent->ldapStoredProperties[$this->class][$this->name];
+            return;
         }
 
         // Second check for values in the config file.
-        if(isset($this->parent->fileStoredProperties[$this->class][$this->name])){
+        if(isset($this->parent->fileStoredProperties[strtolower($this->class)][strtolower($this->name)])){
             $this->setStatus('file');
-            $this->value = $this->parent->fileStoredProperties[$this->class][$this->name];
+            $this->value = $this->parent->fileStoredProperties[strtolower($this->class)][strtolower($this->name)];
+            return;
         }
 
         // If there still wasn't found anything then fallback to the default.
@@ -209,7 +855,6 @@ class gosaProperty
         }
     }
 
-    function getValue() { return($this->value); }
     function getMigrate() { return($this->migrate); }
     function getCheck() { return($this->check); }
     function getName() { return($this->name); }
@@ -218,19 +863,60 @@ class gosaProperty
     function getType() { return($this->type); }
     function getDescription() { return($this->description); }
     function getDefault() { return($this->default); }
+    function getDefaults() { return($this->defaults); }
     function getStatus() { return($this->status); }
     function isMandatory() { return($this->mandatory); }
 
     function setValue($str) 
     {
-        $this->setStatus('modified'); 
-        $this->value = $str; 
+        if(in_array($this->getStatus(), array('modified'))){
+            $this->tmp_value = $str; 
+        }elseif($this->value != $str){
+            $this->setStatus('modified'); 
+            $this->tmp_value = $str; 
+        }
+    }
+
+    function getValue($temporary = FALSE) 
+    { 
+        if($temporary){
+            if(in_array($this->getStatus(), array('modified','removed'))){
+                return($this->tmp_value); 
+            }else{
+                return($this->value); 
+            }
+        }else{ 
+
+            // Do not return ldap values if we've to ignore them.
+            if($this->parent->ignoreLdapProperties){
+                if(isset($this->parent->fileStoredProperties[strtolower($this->class)][strtolower($this->name)])){
+                    return($this->parent->fileStoredProperties[strtolower($this->class)][strtolower($this->name)]);
+                }else{
+                    return($this->getDefault());
+                }
+            }else{
+                return($this->value); 
+            }
+        }
+    }
+
+    function restoreDefault() 
+    {
+        if(in_array($this->getStatus(),array('ldap'))){
+            $this->setStatus('removed'); 
+
+            // Second check for values in the config file.
+            if(isset($this->parent->fileStoredProperties[strtolower($this->class)][strtolower($this->name)])){
+                $this->tmp_value = $this->parent->fileStoredProperties[strtolower($this->class)][strtolower($this->name)];
+            }else{
+                $this->tmp_value = $this->getDefault();
+            }
+        }
     }
 
     function save()
     {
         if($this->getStatus() == 'modified'){
-
             $ldap = $this->parent->config->get_ldap_link();
             $ldap->cd($this->parent->config->current['BASE']);
             $dn = "cn={$this->class},".$this->parent->config->current['CONFIG'];
@@ -238,43 +924,64 @@ class gosaProperty
             if(!$ldap->count()){
                 $ldap->cd($dn);
                 $data = array(
-                            'cn' => $this->class, 
-                            'objectClass' => array('top','gosaConfig'),
-                            'gosaSetting' => $this->name.":".$this->value);
+                        'cn' => $this->class, 
+                        'objectClass' => array('top','gosaConfig'),
+                        'gosaSetting' => $this->name.":".$this->tmp_value);
 
                 $ldap->add($data);
-                if($ldap->success()){
-                    $this->status = 'ldap';
-                }else{
+                if(!$ldap->success()){
                     echo $ldap->get_error();
                 }
+
             }else{
                 $attrs = $ldap->fetch();
                 $data = array();
                 $found = false;
-                for($i = 0;$i<$attrs['gosaSetting']['count']; $i ++){
-                    $set = $attrs['gosaSetting'][$i];
-                    if(preg_match("/^{$this->name}:/", $set)){
-                        $set = "{$this->name}:{$this->value}";
-                        $found = true;
+                if(isset($attrs['gosaSetting']['count'])){
+                    for($i = 0;$i<$attrs['gosaSetting']['count']; $i ++){
+                        $set = $attrs['gosaSetting'][$i];
+                        if(preg_match("/^{$this->name}:/", $set)){
+                            $set = "{$this->name}:{$this->tmp_value}";
+                            $found = true;
+                        }
+                        $data['gosaSetting'][] = $set;
                     }
-                    $data['gosaSetting'][] = $set;
                 }
-                if(!$found) $data['gosaSetting'][] = "{$this->name}:{$this->value}";
+                if(!$found) $data['gosaSetting'][] = "{$this->name}:{$this->tmp_value}";
                 $ldap->cd($dn);
                 $ldap->modify($data);
-                if($ldap->success()){
-                    $this->status = 'ldap';
-                }else{
+                if(!$ldap->success()){
                     echo $ldap->get_error();
                 }
-            } 
+            }
+            $this->value = $this->tmp_value;
+            $this->setStatus('ldap'); 
+        }elseif($this->getStatus() == 'removed'){
+            $ldap = $this->parent->config->get_ldap_link();
+            $ldap->cd($this->parent->config->current['BASE']);
+            $dn = "cn={$this->class},".$this->parent->config->current['CONFIG'];
+            $ldap->cat($dn);
+            $attrs = $ldap->fetch();
+            $data = array('gosaSetting' => array());
+            for($i = 0;$i<$attrs['gosaSetting']['count']; $i ++){
+                $set = $attrs['gosaSetting'][$i];
+                if(preg_match("/^{$this->name}:/", $set)){
+                    continue;
+                }
+                $data['gosaSetting'][] = $set;
+            }
+            $ldap->cd($dn);
+            $ldap->modify($data);
+            if(!$ldap->success()){
+                echo $ldap->get_error();
+            }
+            $this->_restoreCurrentValue();
         }
     }
 
     private function setStatus($state) 
     {
-        if(!in_array($state, array('ldap','file','undefined','modified'))) {
+        if(!in_array($state, array('ldap','file','undefined','modified','removed'))) {
             trigger_error("Unknown property status given '{$state}' for {$this->class}:{$this->name}!");
         }else{
             $this->status = $state; 
@@ -287,4 +994,12 @@ class gosaProperty
     }
 }
 
+
+
+interface propertyMigration
+{
+    function __construct($config,$property);
+}
+
+
 ?>