ftimme
2005-11-30 f6ee7a108a27ce6ccf85995ac638c0692e0434c3
interface/lib/classes/tform.inc.php
@@ -35,29 +35,29 @@
* sowie zum vorbereiten von HTML und SQL
* Ausgaben
*
*   Tabellendefinition
*
*   Datentypen:
*   - INTEGER (Wandelt Ausdrücke in Int um)
*   - DOUBLE
*   - CURRENCY (Formatiert Zahlen nach Währungsnotation)
*   - VARCHAR (kein weiterer Format Check)
*   - DATE (Datumsformat, Timestamp Umwandlung)
*
*   Formtype:
*   - TEXT (normales Textfeld)
*   - PASSWORD (Feldinhalt wird nicht angezeigt)
*   - SELECT (Gibt Werte als option Feld aus)
*   - MULTIPLE (Select-Feld mit nehreren Werten)
*
*   VALUE:
*   - Wert oder Array
*
*   SEPARATOR
*   - Trennzeichen für multiple Felder
*        Tabellendefinition
*
*   Hinweis:
*   Das ID-Feld ist nicht bei den Table Values einzufügen.
*        Datentypen:
*        - INTEGER (Wandelt Ausdrücke in Int um)
*        - DOUBLE
*        - CURRENCY (Formatiert Zahlen nach Währungsnotation)
*        - VARCHAR (kein weiterer Format Check)
*        - DATE (Datumsformat, Timestamp Umwandlung)
*
*        Formtype:
*        - TEXT (normales Textfeld)
*        - PASSWORD (Feldinhalt wird nicht angezeigt)
*        - SELECT (Gibt Werte als option Feld aus)
*        - MULTIPLE (Select-Feld mit nehreren Werten)
*
*        VALUE:
*        - Wert oder Array
*
*        SEPARATOR
*        - Trennzeichen für multiple Felder
*
*        Hinweis:
*        Das ID-Feld ist nicht bei den Table Values einzufügen.
*
* @package form
* @author Till Brehm
@@ -65,822 +65,830 @@
*/
class tform {
   /**
   * Definition der Tabelle (array)
   * @var tableDef
   */
   var $tableDef;
   /**
   * Private
   * @var action
   */
   var $action;
   /**
   * Tabellenname (String)
   * @var table_name
   */
   var $table_name;
   /**
   * Debug Variable
   * @var debug
   */
   var $debug = 0;
   /**
   * name des primary Field der Tabelle (string)
   * @var table_index
   */
   var $table_index;
   /**
   * enthält die Fehlermeldung bei Überprüfung
   * der Variablen mit Regex
   * @var errorMessage
   */
   var $errorMessage = '';
   var $dateformat = "d.m.Y";
        /**
        * Definition der Tabelle (array)
        * @var tableDef
        */
        var $tableDef;
        /**
        * Private
        * @var action
        */
        var $action;
        /**
        * Tabellenname (String)
        * @var table_name
        */
        var $table_name;
        /**
        * Debug Variable
        * @var debug
        */
        var $debug = 0;
        /**
        * name des primary Field der Tabelle (string)
        * @var table_index
        */
        var $table_index;
        /**
        * enthält die Fehlermeldung bei Überprüfung
        * der Variablen mit Regex
        * @var errorMessage
        */
        var $errorMessage = '';
        var $dateformat = "d.m.Y";
    var $formDef;
   var $wordbook;
   var $module;
   var $primary_id;
   /**
   * Laden der Tabellendefinition
   *
   * @param file: Pfad zur Tabellendefinition
   * @return true
   */
   /*
   function loadTableDef($file) {
      global $app,$conf;
      include_once($file);
      $this->tableDef = $table;
      $this->table_name = $table_name;
      $this->table_index = $table_index;
      return true;
   }
   */
    function loadFormDef($file,$module = '') {
      global $app,$conf;
      include_once($file);
      $this->formDef = $form;
      $this->module = $module;
      if($module == '') {
         include_once("lib/lang/".$_SESSION["s"]["language"]."_".$this->formDef["name"].".lng");
      } else {
         include_once("../$module/lib/lang/".$_SESSION["s"]["language"]."_".$this->formDef["name"].".lng");
      }
      $this->wordbook = $wb;
      return true;
   }
   /**
   * Konvertiert die Daten des übergebenen assoziativen
   * Arrays in "menschenlesbare" Form.
   * Datentyp Konvertierung, z.B. für Ausgabe in Listen.
   *
   * @param record
   * @return record
   */
   function decode($record,$tab) {
      if(!is_array($this->formDef['tabs'][$tab])) $app->error("Tab ist leer oder existiert nicht (TAB: $tab).");
      if(is_array($record)) {
         foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
            switch ($field['datatype']) {
            case 'VARCHAR':
               $new_record[$key] = stripslashes($record[$key]);
            break;
            case 'TEXT':
               $new_record[$key] = stripslashes($record[$key]);
            break;
            case 'DATE':
               if($record[$key] > 0) {
                  $new_record[$key] = date($this->dateformat,$record[$key]);
               }
            break;
            case 'INTEGER':
               $new_record[$key] = intval($record[$key]);
            break;
            case 'DOUBLE':
               $new_record[$key] = $record[$key];
            break;
            case 'CURRENCY':
               $new_record[$key] = number_format($record[$key], 2, ',', '');
            break;
            default:
               $new_record[$key] = stripslashes($record[$key]);
            }
         }
      }
   return $new_record;
   }
   /**
   * Get the key => value array of a form filed from a datasource definitiom
   *
   * @param field = NEW oder EDIT
   * @param record = Dataset as array
   * @return key => value array for the value field of a form
   */
   function getDatasourceData($field, $record) {
      global $app;
      $values = array();
      if($field["datasource"]["type"] == 'SQL') {
         // Preparing SQL string. We will replace some
         // common placeholders
         $querystring = $field["datasource"]["querystring"];
         $querystring = str_replace("{USERID}",$_SESSION["s"]["user"]["userid"],$querystring);
         $querystring = str_replace("{GROUPID}",$_SESSION["s"]["user"]["default_group"],$querystring);
         $querystring = str_replace("{GROUPS}",$_SESSION["s"]["user"]["groups"],$querystring);
         $table_idx = $this->formDef['db_table_idx'];
         $querystring = str_replace("{RECORDID}",$record[$table_idx],$querystring);
         $querystring = str_replace("{AUTHSQL}",$this->getAuthSQL('r'),$querystring);
         // Getting the records
         $tmp_records = $app->db->queryAllRecords($querystring);
         if($app->db->errorMessage != '') die($app->db->errorMessage);
         if(is_array($tmp_records)) {
            $key_field = $field["datasource"]["keyfield"];
            $value_field = $field["datasource"]["valuefield"];
            foreach($tmp_records as $tmp_rec) {
               $tmp_id = $tmp_rec[$key_field];
               $values[$tmp_id] = $tmp_rec[$value_field];
            }
         }
      }
      if($field["datasource"]["type"] == 'CUSTOM') {
         // Calls a custom class to validate this record
         if($field["datasource"]['class'] != '' and $field["datasource"]['function'] != '') {
            $datasource_class = $field["datasource"]['class'];
            $datasource_function = $field["datasource"]['function'];
            $app->uses($datasource_class);
            $values = $app->$datasource_class->$datasource_function($field, $record);
         } else {
            $this->errorMessage .= "Custom datasource class or function is empty<br>\r\n";
         }
      }
      return $values;
   }
   /**
   * Record für Ausgabe in Formularen vorbereiten.
   *
   * @param record = Datensatz als Array
   * @param action = NEW oder EDIT
   * @return record
   */
   function getHTML($record, $tab, $action = 'NEW') {
      global $app;
      $this->action = $action;
      if(!is_array($this->formDef)) $app->error("Keine Formdefinition vorhanden.");
      if(!is_array($this->formDef['tabs'][$tab])) $app->error("Tab ist leer oder existiert nicht (TAB: $tab).");
      $new_record = array();
      if($action == 'EDIT') {
         $record = $this->decode($record,$tab);
         if(is_array($record)) {
            foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
               $val = $record[$key];
               // If Datasource is set, get the data from there
               if(is_array($field['datasource'])) {
                  $field["value"] = $this->getDatasourceData($field, $record);
               }
               switch ($field['formtype']) {
               case 'SELECT':
                  if(is_array($field['value'])) {
                     $out = '';
                     foreach($field['value'] as $k => $v) {
                        $selected = ($k == $val)?' SELECTED':'';
                        $out .= "<option value='$k'$selected>$v</option>\r\n";
                     }
                  }
                  $new_record[$key] = $out;
               break;
               case 'MULTIPLE':
                  if(is_array($field['value'])) {
                     // aufsplitten ergebnisse
                     $vals = explode($field['separator'],$val);
                     // HTML schreiben
                     $out = '';
                     foreach($field['value'] as $k => $v) {
                        $selected = '';
                        foreach($vals as $tvl) {
                           if(trim($tvl) == trim($k)) $selected = ' SELECTED';
                        }
                        $out .= "<option value='$k'$selected>$v</option>\r\n";
                     }
                  }
                  $new_record[$key] = $out;
               break;
               case 'PASSWORD':
                  $new_record[$key] = '';
               break;
               case 'CHECKBOX':
                  $checked = (empty($val))?'':' CHECKED';
                  $new_record[$key] = "<input name=\"".$key."\" type=\"checkbox\" value=\"".$field['value']."\" $checked>\r\n";
               break;
               case 'CHECKBOXARRAY':
                  if(is_array($field['value'])) {
                     // aufsplitten ergebnisse
                     $vals = explode($field['separator'],$val);
                     // HTML schreiben
                     $out = '';
                     foreach($field['value'] as $k => $v) {
                        $checked = '';
                        foreach($vals as $tvl) {
                           if(trim($tvl) == trim($k)) $checked = ' CHECKED';
                        }
                        $out .= "<input name=\"".$key."[]\" type=\"checkbox\" value=\"$k\" $checked>$v <br />\r\n";
                     }
                  }
                  $new_record[$key] = $out;
               break;
               case 'RADIO':
                  if(is_array($field['value'])) {
                     // HTML schreiben
                     $out = '';
                     foreach($field['value'] as $k => $v) {
                        $checked = ($k == $val)?' CHECKED':'';
                        $out .= "<input name='".$key."[]' type='radio' value='$k'$checked> $v<br>\r\n";
                     }
                  }
                  $new_record[$key] = $out;
               break;
               default:
                  $new_record[$key] = htmlspecialchars($record[$key]);
               }
            }
         }
      } else {
         // Action: NEW
         foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
            // If Datasource is set, get the data from there
            if(is_array($field['datasource'])) {
               $field["value"] = $this->getDatasourceData($field, $record);
            }
            switch ($field['formtype']) {
            case 'SELECT':
               if(is_array($field['value'])) {
                  $out = '';
                  foreach($field['value'] as $k => $v) {
                     $selected = ($k == $val)?' SELECTED':'';
                     $out .= "<option value='$k'$selected>$v</option>\r\n";
                  }
               }
               $new_record[$key] = $out;
            break;
            case 'MULTIPLE':
                  if(is_array($field['value'])) {
                     // aufsplitten ergebnisse
                     $vals = explode($field['separator'],$val);
                     // HTML schreiben
                     $out = '';
                     foreach($field['value'] as $k => $v) {
                        $out .= "<option value='$k'>$v</option>\r\n";
                     }
                  }
                  $new_record[$key] = $out;
               break;
            case 'PASSWORD':
               $new_record[$key] = '';
            break;
            case 'CHECKBOX':
               $checked = (empty($field["default"]))?'':' CHECKED';
               $new_record[$key] = "<input name=\"".$key."\" type=\"checkbox\" value=\"".$field['value']."\" $checked>\r\n";
            break;
            case 'CHECKBOXARRAY':
               if(is_array($field['value'])) {
                  // aufsplitten ergebnisse
                  $vals = explode($field['separator'],$field["default"]);
                  // HTML schreiben
                  $out = '';
                  foreach($field['value'] as $k => $v) {
                     $checked = '';
                     foreach($vals as $tvl) {
                        if(trim($tvl) == trim($k)) $checked = ' CHECKED';
                     }
                     $out .= "<input name=\"".$key."[]\" type=\"checkbox\" value=\"$k\" $checked> $v<br />\r\n";
                  }
               }
               $new_record[$key] = $out;
            break;
            case 'RADIO':
               if(is_array($field['value'])) {
                  // HTML schreiben
                  $out = '';
                  foreach($field['value'] as $k => $v) {
                     $checked = ($k == $field["default"])?' CHECKED':'';
                     $out .= "<input name='".$key."[]' type='radio' value='$k'$checked> $v<br>\r\n";
                  }
               }
               $new_record[$key] = $out;
            break;
            default:
               $new_record[$key] = htmlspecialchars($field['default']);
            }
         }
      }
      if($this->debug == 1) $this->dbg($new_record);
      return $new_record;
   }
   /**
   * Record in "maschinen lesbares" Format überführen
   * und Werte gegen reguläre Ausdrücke prüfen.
   *
   * @param record = Datensatz als Array
   * @return record
   */
   function encode($record,$tab) {
      if(!is_array($this->formDef['tabs'][$tab])) $app->error("Tab ist leer oder existiert nicht (TAB: $tab).");
      //$this->errorMessage = '';
      if(is_array($record)) {
         foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
            if(is_array($field['validators'])) $this->validateField($key, $record[$key], $field['validators']);
            switch ($field['datatype']) {
            case 'VARCHAR':
               if(!is_array($record[$key])) {
                  $new_record[$key] = addslashes($record[$key]);
               } else {
                  $new_record[$key] = implode($field['separator'],$record[$key]);
               }
            break;
            case 'TEXT':
               if(!is_array($record[$key])) {
                  $new_record[$key] = addslashes($record[$key]);
               } else {
                  $new_record[$key] = implode($field['separator'],$record[$key]);
               }
            break;
            case 'DATE':
               if($record[$key] > 0) {
                  list($tag,$monat,$jahr) = explode('.',$record[$key]);
                  $new_record[$key] = mktime(0,0,0,$monat,$tag,$jahr);
               }
            break;
            case 'INTEGER':
               $new_record[$key] = intval($record[$key]);
            break;
            case 'DOUBLE':
               $new_record[$key] = addslashes($record[$key]);
            break;
            case 'CURRENCY':
               $new_record[$key] = str_replace(",",".",$record[$key]);
            break;
            }
            // The use of the field value is deprecated, use validators instead
            if($field['regex'] != '') {
               // Enable that "." matches also newlines
               $field['regex'] .= 's';
               if(!preg_match($field['regex'], $record[$key])) {
                  $errmsg = $field['errmsg'];
                  $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
               }
            }
         }
      }
      return $new_record;
   }
   /**
   * process the validators for a given field.
   *
   * @param field_name = Name of the field
   * @param field_value = value of the field
   * @param validatoors = Array of validators
   * @return record
   */
   function validateField($field_name, $field_value, $validators) {
      global $app;
      // loop trough the validators
      foreach($validators as $validator) {
         switch ($validator['type']) {
            case 'REGEX':
               $validator['regex'] .= 's';
               if(!preg_match($validator['regex'], $field_value)) {
                  $errmsg = $validator['errmsg'];
                  $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
               }
            break;
            case 'UNIQUE':
               if($this->action == 'NEW') {
                  $num_rec = $app->db->queryOneRecord("SELECT count(*) as number FROM ".$escape.$this->formDef['db_table'].$escape. " WHERE $field_name = '".$app->db->quote($field_value)."'");
                  if($num_rec["number"] > 0) {
                     $errmsg = $validator['errmsg'];
                     $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                  }
               } else {
                  $num_rec = $app->db->queryOneRecord("SELECT count(*) as number FROM ".$escape.$this->formDef['db_table'].$escape. " WHERE $field_name = '".$app->db->quote($field_value)."' AND ".$this->formDef['db_table_idx']." != ".$this->primary_id);
                  if($num_rec["number"] > 0) {
                     $errmsg = $validator['errmsg'];
                     $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                  }
               }
            break;
            case 'NOTEMPTY':
               if(empty($field_value)) {
                  $errmsg = $validator['errmsg'];
                  $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
               }
            break;
            case 'ISEMAIL':
               if(!preg_match("/^\w+[\w.-]*\w+@\w+[\w.-]*\w+\.[a-z]{2,4}$/i", $field_value)) {
                  $errmsg = $validator['errmsg'];
                  $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
               }
            break;
            case 'ISINT':
               $tmpval = intval($field_value);
               if($tmpval === 0 and !empty($field_value)) {
                  $errmsg = $validator['errmsg'];
                  $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
               }
            break;
            case 'CUSTOM':
               // Calls a custom class to validate this record
               if($validator['class'] != '' and $validator['function'] != '') {
                  $validator_class = $validator['class'];
                  $validator_function = $validator['function'];
                  $app->uses($validator_class);
                  $this->errorMessage .= $app->$validator_class->$validator_function($validator);
               } else {
                  $this->errorMessage .= "Custom validator class or function is empty<br>\r\n";
               }
            break;
         }
      }
      return true;
   }
   /**
   * SQL Statement für Record erzeugen.
   *
   * @param record = Datensatz als Array
   * @param action = INSERT oder UPDATE
   * @param primary_id
   * @return record
   */
   function getSQL($record, $tab, $action = 'INSERT', $primary_id = 0, $sql_ext_where = '') {
      global $app;
      // If there are no data records on the tab, return empty sql string
      if(count($this->formDef['tabs'][$tab]['fields']) == 0) return '';
      // checking permissions
      if($this->formDef['auth'] == 'yes') {
         if($action == "INSERT") {
            if(!$this->checkPerm($primary_id,'i')) $this->errorMessage .= "Insert denied.<br>\r\n";
         } else {
            if(!$this->checkPerm($primary_id,'u')) $this->errorMessage .= "Insert denied.<br>\r\n";
         }
      }
      $this->action = $action;
      $this->primary_id = $primary_id;
      $record = $this->encode($record,$tab);
      $sql_insert_key = '';
      $sql_insert_val = '';
      $sql_update = '';
      if(!is_array($this->formDef)) $app->error("Keine Formulardefinition vorhanden.");
      if(!is_array($this->formDef['tabs'][$tab])) $app->error("Tab ist leer oder existiert nicht (TAB: $tab).");
      // gehe durch alle Felder des Tabs
      if(is_array($record)) {
           foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
            // Wenn es kein leeres Passwortfeld ist
            if (!($field['formtype'] == 'PASSWORD' and $record[$key] == '')) {
               // Erzeuge Insert oder Update Quelltext
               if($action == "INSERT") {
                  if($field['formtype'] == 'PASSWORD') {
                     $sql_insert_key .= "`$key`, ";
                     if($field['encryption'] == 'CRYPT') {
                        $sql_insert_val .= "'".crypt($record[$key])."', ";
                     } else {
                        $sql_insert_val .= "md5('".$record[$key]."'), ";
                     }
                  } else {
                     $sql_insert_key .= "`$key`, ";
                     $sql_insert_val .= "'".$record[$key]."', ";
                  }
               } else {
                  if($field['formtype'] == 'PASSWORD') {
                     if($field['encryption'] == 'CRYPT') {
                        $sql_update .= "`$key` = '".crypt($record[$key])."', ";
                     } else {
                        $sql_update .= "`$key` = md5('".$record[$key]."'), ";
                     }
                  } else {
                     $sql_update .= "`$key` = '".$record[$key]."', ";
                  }
               }
            }
         }
        var $wordbook;
        var $module;
        var $primary_id;
        /**
        * Laden der Tabellendefinition
        *
        * @param file: Pfad zur Tabellendefinition
        * @return true
        */
        /*
        function loadTableDef($file) {
                global $app,$conf;
                include_once($file);
                $this->tableDef = $table;
                $this->table_name = $table_name;
                $this->table_index = $table_index;
                return true;
        }
      // Füge Backticks nur bei unvollständigen Tabellennamen ein
      if(stristr($this->formDef['db_table'],'.')) {
         $escape = '';
      } else {
         $escape = '`';
      }
      if($action == "INSERT") {
         if($this->formDef['auth'] == 'yes') {
            // Setze User und Gruppe
            $sql_insert_key .= "`sys_userid`, ";
            $sql_insert_val .= ($this->formDef["auth_preset"]["userid"] > 0)?"'".$this->formDef["auth_preset"]["userid"]."', ":"'".$_SESSION["s"]["user"]["userid"]."', ";
            $sql_insert_key .= "`sys_groupid`, ";
            $sql_insert_val .= ($this->formDef["auth_preset"]["groupid"] > 0)?"'".$this->formDef["auth_preset"]["groupid"]."', ":"'".$_SESSION["s"]["user"]["default_group"]."', ";
            $sql_insert_key .= "`sys_perm_user`, ";
            $sql_insert_val .= "'".$this->formDef["auth_preset"]["perm_user"]."', ";
            $sql_insert_key .= "`sys_perm_group`, ";
            $sql_insert_val .= "'".$this->formDef["auth_preset"]["perm_group"]."', ";
            $sql_insert_key .= "`sys_perm_other`, ";
            $sql_insert_val .= "'".$this->formDef["auth_preset"]["perm_other"]."', ";
         }
         $sql_insert_key = substr($sql_insert_key,0,-2);
         $sql_insert_val = substr($sql_insert_val,0,-2);
         $sql = "INSERT INTO ".$escape.$this->formDef['db_table'].$escape." ($sql_insert_key) VALUES ($sql_insert_val)";
      } else {
         if($primary_id != 0) {
            $sql_update = substr($sql_update,0,-2);
            $sql = "UPDATE ".$escape.$this->formDef['db_table'].$escape." SET ".$sql_update." WHERE ".$this->formDef['db_table_idx']." = ".$primary_id;
            if($sql_ext_where != '') $sql .= " and ".$sql_ext_where;
         } else {
            $app->error("Primary ID fehlt!");
         }
      }
      // Daten in History tabelle speichern
      if($this->errorMessage == '' and $this->formDef['db_history'] == 'yes') $this->datalogSave($action,$primary_id,$record);
      return $sql;
   }
   /**
   * Debugging arrays.
   *
   * @param array_data
   */
   function dbg($array_data) {
      echo "<pre>";
      print_r($array_data);
      echo "</pre>";
   }
        */
    function loadFormDef($file,$module = '') {
                global $app,$conf;
                include_once($file);
                $this->formDef = $form;
                $this->module = $module;
                if($module == '') {
                        include_once("lib/lang/".$_SESSION["s"]["language"]."_".$this->formDef["name"].".lng");
                } else {
                        include_once("../$module/lib/lang/".$_SESSION["s"]["language"]."_".$this->formDef["name"].".lng");
                }
                $this->wordbook = $wb;
                return true;
        }
        /**
        * Konvertiert die Daten des übergebenen assoziativen
        * Arrays in "menschenlesbare" Form.
        * Datentyp Konvertierung, z.B. für Ausgabe in Listen.
        *
        * @param record
        * @return record
        */
        function decode($record,$tab) {
                if(!is_array($this->formDef['tabs'][$tab])) $app->error("Tab ist leer oder existiert nicht (TAB: $tab).");
                if(is_array($record)) {
                        foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
                                switch ($field['datatype']) {
                                case 'VARCHAR':
                                        $new_record[$key] = stripslashes($record[$key]);
                                break;
                                case 'TEXT':
                                        $new_record[$key] = stripslashes($record[$key]);
                                break;
                                case 'DATE':
                                        if($record[$key] > 0) {
                                                $new_record[$key] = date($this->dateformat,$record[$key]);
                                        }
                                break;
                                case 'INTEGER':
                                        $new_record[$key] = intval($record[$key]);
                                break;
                                case 'DOUBLE':
                                        $new_record[$key] = $record[$key];
                                break;
                                case 'CURRENCY':
                                        $new_record[$key] = number_format($record[$key], 2, ',', '');
                                break;
                                default:
                                        $new_record[$key] = stripslashes($record[$key]);
                                }
                        }
                }
        return $new_record;
        }
        /**
        * Get the key => value array of a form filed from a datasource definitiom
        *
        * @param field = NEW oder EDIT
        * @param record = Dataset as array
        * @return key => value array for the value field of a form
        */
        function getDatasourceData($field, $record) {
                global $app;
                $values = array();
                if($field["datasource"]["type"] == 'SQL') {
                        // Preparing SQL string. We will replace some
                        // common placeholders
                        $querystring = $field["datasource"]["querystring"];
                        $querystring = str_replace("{USERID}",$_SESSION["s"]["user"]["userid"],$querystring);
                        $querystring = str_replace("{GROUPID}",$_SESSION["s"]["user"]["default_group"],$querystring);
                        $querystring = str_replace("{GROUPS}",$_SESSION["s"]["user"]["groups"],$querystring);
                        $table_idx = $this->formDef['db_table_idx'];
                        $querystring = str_replace("{RECORDID}",$record[$table_idx],$querystring);
                        $querystring = str_replace("{AUTHSQL}",$this->getAuthSQL('r'),$querystring);
                        // Getting the records
                        $tmp_records = $app->db->queryAllRecords($querystring);
                        if($app->db->errorMessage != '') die($app->db->errorMessage);
                        if(is_array($tmp_records)) {
                                $key_field = $field["datasource"]["keyfield"];
                                $value_field = $field["datasource"]["valuefield"];
                                foreach($tmp_records as $tmp_rec) {
                                        $tmp_id = $tmp_rec[$key_field];
                                        $values[$tmp_id] = $tmp_rec[$value_field];
                                }
                        }
                }
                if($field["datasource"]["type"] == 'CUSTOM') {
                        // Calls a custom class to validate this record
                        if($field["datasource"]['class'] != '' and $field["datasource"]['function'] != '') {
                                $datasource_class = $field["datasource"]['class'];
                                $datasource_function = $field["datasource"]['function'];
                                $app->uses($datasource_class);
                                $values = $app->$datasource_class->$datasource_function($field, $record);
                        } else {
                                $this->errorMessage .= "Custom datasource class or function is empty<br>\r\n";
                        }
                }
                return $values;
        }
        /**
        * Record für Ausgabe in Formularen vorbereiten.
        *
        * @param record = Datensatz als Array
        * @param action = NEW oder EDIT
        * @return record
        */
        function getHTML($record, $tab, $action = 'NEW') {
                global $app;
                $this->action = $action;
                if(!is_array($this->formDef)) $app->error("Keine Formdefinition vorhanden.");
                if(!is_array($this->formDef['tabs'][$tab])) $app->error("Tab ist leer oder existiert nicht (TAB: $tab).");
                $new_record = array();
                if($action == 'EDIT') {
                        $record = $this->decode($record,$tab);
                        if(is_array($record)) {
                                foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
                                        $val = $record[$key];
                                        // If Datasource is set, get the data from there
                                        if(is_array($field['datasource'])) {
                                                $field["value"] = $this->getDatasourceData($field, $record);
                                        }
                                        switch ($field['formtype']) {
                                        case 'SELECT':
                                                if(is_array($field['value'])) {
                                                        $out = '';
                                                        foreach($field['value'] as $k => $v) {
                                                                $selected = ($k == $val)?' SELECTED':'';
                                                                $out .= "<option value='$k'$selected>$v</option>\r\n";
                                                        }
                                                }
                                                $new_record[$key] = $out;
                                        break;
                                        case 'MULTIPLE':
                                                if(is_array($field['value'])) {
                                                        // aufsplitten ergebnisse
                                                        $vals = explode($field['separator'],$val);
                                                        // HTML schreiben
                                                        $out = '';
                                                        foreach($field['value'] as $k => $v) {
                                                                $selected = '';
                                                                foreach($vals as $tvl) {
                                                                        if(trim($tvl) == trim($k)) $selected = ' SELECTED';
                                                                }
                                                                $out .= "<option value='$k'$selected>$v</option>\r\n";
                                                        }
                                                }
                                                $new_record[$key] = $out;
                                        break;
                                        case 'PASSWORD':
                                                $new_record[$key] = '';
                                        break;
                                        case 'CHECKBOX':
                                                $checked = (empty($val))?'':' CHECKED';
                                                $new_record[$key] = "<input name=\"".$key."\" type=\"checkbox\" value=\"".$field['value']."\" $checked>\r\n";
                                        break;
                                        case 'CHECKBOXARRAY':
                                                if(is_array($field['value'])) {
                                                        // aufsplitten ergebnisse
                                                        $vals = explode($field['separator'],$val);
                                                        // HTML schreiben
                                                        $out = '';
                                                        foreach($field['value'] as $k => $v) {
                                                                $checked = '';
                                                                foreach($vals as $tvl) {
                                                                        if(trim($tvl) == trim($k)) $checked = ' CHECKED';
                                                                }
                                                                $out .= "<input name=\"".$key."[]\" type=\"checkbox\" value=\"$k\" $checked>$v <br />\r\n";
                                                        }
                                                }
                                                $new_record[$key] = $out;
                                        break;
                                        case 'RADIO':
                                                if(is_array($field['value'])) {
                                                        // HTML schreiben
                                                        $out = '';
                                                        foreach($field['value'] as $k => $v) {
                                                                $checked = ($k == $val)?' CHECKED':'';
                                                                $out .= "<input name='".$key."[]' type='radio' value='$k'$checked> $v<br>\r\n";
                                                        }
                                                }
                                                $new_record[$key] = $out;
                                        break;
                                        default:
                                                $new_record[$key] = htmlspecialchars($record[$key]);
                                        }
                                }
                        }
                } else {
                        // Action: NEW
                        foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
                                // If Datasource is set, get the data from there
                                if(is_array($field['datasource'])) {
                                        $field["value"] = $this->getDatasourceData($field, $record);
                                }
                                switch ($field['formtype']) {
                                case 'SELECT':
                                        if(is_array($field['value'])) {
                                                $out = '';
                                                foreach($field['value'] as $k => $v) {
                                                        $selected = ($k == $val)?' SELECTED':'';
                                                        $out .= "<option value='$k'$selected>$v</option>\r\n";
                                                }
                                        }
                                        $new_record[$key] = $out;
                                break;
                                case 'MULTIPLE':
                                                if(is_array($field['value'])) {
                                                        // aufsplitten ergebnisse
                                                        $vals = explode($field['separator'],$val);
                                                        // HTML schreiben
                                                        $out = '';
                                                        foreach($field['value'] as $k => $v) {
                                                                $out .= "<option value='$k'>$v</option>\r\n";
                                                        }
                                                }
                                                $new_record[$key] = $out;
                                        break;
                                case 'PASSWORD':
                                        $new_record[$key] = '';
                                break;
                                case 'CHECKBOX':
                                        $checked = (empty($field["default"]))?'':' CHECKED';
                                        $new_record[$key] = "<input name=\"".$key."\" type=\"checkbox\" value=\"".$field['value']."\" $checked>\r\n";
                                break;
                                case 'CHECKBOXARRAY':
                                        if(is_array($field['value'])) {
                                                // aufsplitten ergebnisse
                                                $vals = explode($field['separator'],$field["default"]);
                                                // HTML schreiben
                                                $out = '';
                                                foreach($field['value'] as $k => $v) {
                                                        $checked = '';
                                                        foreach($vals as $tvl) {
                                                                if(trim($tvl) == trim($k)) $checked = ' CHECKED';
                                                        }
                                                        $out .= "<input name=\"".$key."[]\" type=\"checkbox\" value=\"$k\" $checked> $v<br />\r\n";
                                                }
                                        }
                                        $new_record[$key] = $out;
                                break;
                                case 'RADIO':
                                        if(is_array($field['value'])) {
                                                // HTML schreiben
                                                $out = '';
                                                foreach($field['value'] as $k => $v) {
                                                        $checked = ($k == $field["default"])?' CHECKED':'';
                                                        $out .= "<input name='".$key."[]' type='radio' value='$k'$checked> $v<br>\r\n";
                                                }
                                        }
                                        $new_record[$key] = $out;
                                break;
                                default:
                                        $new_record[$key] = htmlspecialchars($field['default']);
                                }
                        }
                }
                if($this->debug == 1) $this->dbg($new_record);
                return $new_record;
        }
        /**
        * Record in "maschinen lesbares" Format überführen
        * und Werte gegen reguläre Ausdrücke prüfen.
        *
        * @param record = Datensatz als Array
        * @return record
        */
        function encode($record,$tab) {
                if(!is_array($this->formDef['tabs'][$tab])) $app->error("Tab ist leer oder existiert nicht (TAB: $tab).");
                //$this->errorMessage = '';
                if(is_array($record)) {
                        foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
                                if(is_array($field['validators'])) $this->validateField($key, $record[$key], $field['validators']);
                                switch ($field['datatype']) {
                                case 'VARCHAR':
                                        if(!is_array($record[$key])) {
                                                $new_record[$key] = addslashes($record[$key]);
                                        } else {
                                                $new_record[$key] = implode($field['separator'],$record[$key]);
                                        }
                                break;
                                case 'TEXT':
                                        if(!is_array($record[$key])) {
                                                $new_record[$key] = addslashes($record[$key]);
                                        } else {
                                                $new_record[$key] = implode($field['separator'],$record[$key]);
                                        }
                                break;
                                case 'DATE':
                                        if($record[$key] > 0) {
                                                list($tag,$monat,$jahr) = explode('.',$record[$key]);
                                                $new_record[$key] = mktime(0,0,0,$monat,$tag,$jahr);
                                        }
                                break;
                                case 'INTEGER':
                                        $new_record[$key] = intval($record[$key]);
                                        //if($new_record[$key] != $record[$key]) $new_record[$key] = $field['default'];
                                        //if($key == 'refresh') die($record[$key]);
                                break;
                                case 'DOUBLE':
                                        $new_record[$key] = addslashes($record[$key]);
                                break;
                                case 'CURRENCY':
                                        $new_record[$key] = str_replace(",",".",$record[$key]);
                                break;
                                }
                                // The use of the field value is deprecated, use validators instead
                                if($field['regex'] != '') {
                                        // Enable that "." matches also newlines
                                        $field['regex'] .= 's';
                                        if(!preg_match($field['regex'], $record[$key])) {
                                                $errmsg = $field['errmsg'];
                                                $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                                        }
                                }
                        }
                }
                return $new_record;
        }
        /**
        * process the validators for a given field.
        *
        * @param field_name = Name of the field
        * @param field_value = value of the field
        * @param validatoors = Array of validators
        * @return record
        */
        function validateField($field_name, $field_value, $validators) {
                global $app;
                // loop trough the validators
                foreach($validators as $validator) {
                        switch ($validator['type']) {
                                case 'REGEX':
                                        $validator['regex'] .= 's';
                                        if(!preg_match($validator['regex'], $field_value)) {
                                                $errmsg = $validator['errmsg'];
                                                $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                                        }
                                break;
                                case 'UNIQUE':
                                        if($this->action == 'NEW') {
                                                $num_rec = $app->db->queryOneRecord("SELECT count(*) as number FROM ".$escape.$this->formDef['db_table'].$escape. " WHERE $field_name = '".$app->db->quote($field_value)."'");
                                                if($num_rec["number"] > 0) {
                                                        $errmsg = $validator['errmsg'];
                                                        $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                                                }
                                        } else {
                                                $num_rec = $app->db->queryOneRecord("SELECT count(*) as number FROM ".$escape.$this->formDef['db_table'].$escape. " WHERE $field_name = '".$app->db->quote($field_value)."' AND ".$this->formDef['db_table_idx']." != ".$this->primary_id);
                                                if($num_rec["number"] > 0) {
                                                        $errmsg = $validator['errmsg'];
                                                        $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                                                }
                                        }
                                break;
                                case 'NOTEMPTY':
                                        if(empty($field_value)) {
                                                $errmsg = $validator['errmsg'];
                                                $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                                        }
                                break;
                                case 'ISEMAIL':
                                        if(!preg_match("/^\w+[\w.-]*\w+@\w+[\w.-]*\w+\.[a-z]{2,4}$/i", $field_value)) {
                                                $errmsg = $validator['errmsg'];
                                                $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                                        }
                                break;
                                case 'ISINT':
                                        $tmpval = intval($field_value);
                                        if($tmpval === 0 and !empty($field_value)) {
                                                $errmsg = $validator['errmsg'];
                                                $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                                        }
                                break;
                                case 'ISPOSITIVE':
                                        if(!is_numeric($field_value) || $field_value <= 0){
                                          $errmsg = $validator['errmsg'];
                                          $this->errorMessage .= $this->wordbook[$errmsg]."<br>\r\n";
                                        }
                                break;
                                case 'CUSTOM':
                                        // Calls a custom class to validate this record
                                        if($validator['class'] != '' and $validator['function'] != '') {
                                                $validator_class = $validator['class'];
                                                $validator_function = $validator['function'];
                                                $app->uses($validator_class);
                                                $this->errorMessage .= $app->$validator_class->$validator_function($validator);
                                        } else {
                                                $this->errorMessage .= "Custom validator class or function is empty<br>\r\n";
                                        }
                                break;
                        }
                }
                return true;
        }
        /**
        * SQL Statement für Record erzeugen.
        *
        * @param record = Datensatz als Array
        * @param action = INSERT oder UPDATE
        * @param primary_id
        * @return record
        */
        function getSQL($record, $tab, $action = 'INSERT', $primary_id = 0, $sql_ext_where = '') {
                global $app;
                // If there are no data records on the tab, return empty sql string
                if(count($this->formDef['tabs'][$tab]['fields']) == 0) return '';
                // checking permissions
                if($this->formDef['auth'] == 'yes') {
                        if($action == "INSERT") {
                                if(!$this->checkPerm($primary_id,'i')) $this->errorMessage .= "Insert denied.<br>\r\n";
                        } else {
                                if(!$this->checkPerm($primary_id,'u')) $this->errorMessage .= "Insert denied.<br>\r\n";
                        }
                }
                $this->action = $action;
                $this->primary_id = $primary_id;
                $record = $this->encode($record,$tab);
                $sql_insert_key = '';
                $sql_insert_val = '';
                $sql_update = '';
                if(!is_array($this->formDef)) $app->error("Keine Formulardefinition vorhanden.");
                if(!is_array($this->formDef['tabs'][$tab])) $app->error("Tab ist leer oder existiert nicht (TAB: $tab).");
                // gehe durch alle Felder des Tabs
                if(is_array($record)) {
                foreach($this->formDef['tabs'][$tab]['fields'] as $key => $field) {
                                // Wenn es kein leeres Passwortfeld ist
                                if (!($field['formtype'] == 'PASSWORD' and $record[$key] == '')) {
                                        // Erzeuge Insert oder Update Quelltext
                                        if($action == "INSERT") {
                                                if($field['formtype'] == 'PASSWORD') {
                                                        $sql_insert_key .= "`$key`, ";
                                                        if($field['encryption'] == 'CRYPT') {
                                                                $sql_insert_val .= "'".crypt($record[$key])."', ";
                                                        } else {
                                                                $sql_insert_val .= "md5('".$record[$key]."'), ";
                                                        }
                                                } else {
                                                        $sql_insert_key .= "`$key`, ";
                                                        $sql_insert_val .= "'".$record[$key]."', ";
                                                }
                                        } else {
                                                if($field['formtype'] == 'PASSWORD') {
                                                        if($field['encryption'] == 'CRYPT') {
                                                                $sql_update .= "`$key` = '".crypt($record[$key])."', ";
                                                        } else {
                                                                $sql_update .= "`$key` = md5('".$record[$key]."'), ";
                                                        }
                                                } else {
                                                        $sql_update .= "`$key` = '".$record[$key]."', ";
                                                }
                                        }
                                }
                        }
        }
                // Füge Backticks nur bei unvollständigen Tabellennamen ein
                if(stristr($this->formDef['db_table'],'.')) {
                        $escape = '';
                } else {
                        $escape = '`';
                }
                if($action == "INSERT") {
                        if($this->formDef['auth'] == 'yes') {
                                // Setze User und Gruppe
                                $sql_insert_key .= "`sys_userid`, ";
                                $sql_insert_val .= ($this->formDef["auth_preset"]["userid"] > 0)?"'".$this->formDef["auth_preset"]["userid"]."', ":"'".$_SESSION["s"]["user"]["userid"]."', ";
                                $sql_insert_key .= "`sys_groupid`, ";
                                $sql_insert_val .= ($this->formDef["auth_preset"]["groupid"] > 0)?"'".$this->formDef["auth_preset"]["groupid"]."', ":"'".$_SESSION["s"]["user"]["default_group"]."', ";
                                $sql_insert_key .= "`sys_perm_user`, ";
                                $sql_insert_val .= "'".$this->formDef["auth_preset"]["perm_user"]."', ";
                                $sql_insert_key .= "`sys_perm_group`, ";
                                $sql_insert_val .= "'".$this->formDef["auth_preset"]["perm_group"]."', ";
                                $sql_insert_key .= "`sys_perm_other`, ";
                                $sql_insert_val .= "'".$this->formDef["auth_preset"]["perm_other"]."', ";
                        }
                        $sql_insert_key = substr($sql_insert_key,0,-2);
                        $sql_insert_val = substr($sql_insert_val,0,-2);
                        $sql = "INSERT INTO ".$escape.$this->formDef['db_table'].$escape." ($sql_insert_key) VALUES ($sql_insert_val)";
                } else {
                        if($primary_id != 0) {
                                $sql_update = substr($sql_update,0,-2);
                                $sql = "UPDATE ".$escape.$this->formDef['db_table'].$escape." SET ".$sql_update." WHERE ".$this->formDef['db_table_idx']." = ".$primary_id;
                                if($sql_ext_where != '') $sql .= " and ".$sql_ext_where;
                        } else {
                                $app->error("Primary ID fehlt!");
                        }
                }
                // Daten in History tabelle speichern
                if($this->errorMessage == '' and $this->formDef['db_history'] == 'yes') $this->datalogSave($action,$primary_id,$record);
                return $sql;
        }
        /**
        * Debugging arrays.
        *
        * @param array_data
        */
        function dbg($array_data) {
                echo "<pre>";
                print_r($array_data);
                echo "</pre>";
        }
    function showForm() {
       global $app,$conf;
            global $app,$conf;
        if(!is_array($this->formDef)) die("Form Definition wurde nicht geladen.");
      $active_tab = $this->getNextTab();
                $active_tab = $this->getNextTab();
        // definiere Tabs
        foreach( $this->formDef["tabs"] as $key => $tab) {
         $tab['name'] = $key;
                        $tab['name'] = $key;
            if($tab['name'] == $active_tab) {
            // Wenn Modul gesetzt, dann setzte template pfad relativ zu modul.
            if($this->module != '') $tab["template"] = "../".$this->module."/".$tab["template"];
            // überprüfe, ob das Template existiert, wenn nicht
            // dann generiere das Template
            if(!is_file($tab["template"])) {
               $app->uses('tform_tpl_generator');
               $app->tform_tpl_generator->buildHTML($this->formDef,$tab['name']);
            }
               $app->tpl->setInclude('content_tpl',$tab["template"]);
                                // Wenn Modul gesetzt, dann setzte template pfad relativ zu modul.
                                if($this->module != '') $tab["template"] = "../".$this->module."/".$tab["template"];
                                // überprüfe, ob das Template existiert, wenn nicht
                                // dann generiere das Template
                                if(!is_file($tab["template"])) {
                                        $app->uses('tform_tpl_generator');
                                        $app->tform_tpl_generator->buildHTML($this->formDef,$tab['name']);
                                }
                    $app->tpl->setInclude('content_tpl',$tab["template"]);
                $tab["active"] = 1;
                $_SESSION["s"]["form"]["tab"] = $tab['name'];
            } else {
               $tab["active"] = 0;
                    $tab["active"] = 0;
            }
         // Die Datenfelder werden für die Tabs nicht benötigt
         unset($tab["fields"]);
         unset($tab["plugins"]);
                        // Die Datenfelder werden für die Tabs nicht benötigt
                        unset($tab["fields"]);
                        unset($tab["plugins"]);
            $frmTab[] = $tab;
        }
        // setting form tabs
        $app->tpl->setLoop("formTab", $frmTab);
      // Set form action
      $app->tpl->setVar('form_action',$this->formDef["action"]);
      $app->tpl->setVar('form_active_tab',$active_tab);
      // Set form title
      $form_hint = '<b>'.$this->formDef["title"].'</b>';
      if($this->formDef["description"] != '') $form_hint .= '<br><br>'.$this->formDef["description"];
      $app->tpl->setVar('form_hint',$form_hint);
      // Set Wordbook for this form
      $app->tpl->setVar($this->wordbook);
                // Set form action
                $app->tpl->setVar('form_action',$this->formDef["action"]);
                $app->tpl->setVar('form_active_tab',$active_tab);
                // Set form title
                $form_hint = '<b>'.$this->formDef["title"].'</b>';
                if($this->formDef["description"] != '') $form_hint .= '<br><br>'.$this->formDef["description"];
                $app->tpl->setVar('form_hint',$form_hint);
                // Set Wordbook for this form
                $app->tpl->setVar($this->wordbook);
    }
   function datalogSave($action,$primary_id,$record_new) {
      global $app,$conf;
      // Füge Backticks nur bei unvollständigen Tabellennamen ein
      if(stristr($this->formDef['db_table'],'.')) {
         $escape = '';
      } else {
         $escape = '`';
      }
      if($action == "UPDATE") {
         $sql = "SELECT * FROM ".$escape.$this->formDef['db_table'].$escape." WHERE ".$this->formDef['db_table_idx']." = ".$primary_id;
         $record_old = $app->db->queryOneRecord($sql);
      } else {
         $record_old = array();
      }
      $diffrec = array();
      if(is_array($record_new)) {
         foreach($record_new as $key => $val) {
            if($record_old[$key] != $val) {
               // Datensatz hat sich geändert
               $diffrec[$key] = array('old' => $record_old[$key],
                              'new' => $val);
            }
         }
      }
      if(count($diffrec) > 0) {
         $diffstr = $app->db->quote(serialize($diffrec));
         $username = $app->db->quote($_SESSION["s"]["user"]["username"]);
         $dbidx = $this->formDef['db_table_idx'].":".$primary_id;
         $action = ($action == 'INSERT')?'i':'u';
         $sql = "INSERT INTO sys_datalog (dbtable,dbidx,action,tstamp,user,data) VALUES ('".$this->formDef['db_table']."','$dbidx','$action','".time()."','$username','$diffstr')";
         $app->db->query($sql);
      }
      return true;
   }
   function getAuthSQL($perm) {
      $sql = '(';
      $sql .= "(sys_userid = ".$_SESSION["s"]["user"]["userid"]." AND sys_perm_user like '%$perm%') OR  ";
      $sql .= "(sys_groupid IN (".$_SESSION["s"]["user"]["groups"].") AND sys_perm_group like '%$perm%') OR ";
      $sql .= "sys_perm_other like '%$perm%'";
      $sql .= ')';
      return $sql;
   }
   /*
   Diese funktion überprüft, ob ein User die Berechtigung $perm für den Datensatz mit der ID $record_id
   hat. It record_id = 0, dann wird gegen die user Defaults des Formulares getestet.
   */
   function checkPerm($record_id,$perm) {
      global $app;
      if($record_id > 0) {
         // Füge Backticks nur bei unvollständigen Tabellennamen ein
         if(stristr($this->formDef['db_table'],'.')) {
            $escape = '';
         } else {
            $escape = '`';
         }
         $sql = "SELECT ".$this->formDef['db_table_idx']." FROM ".$escape.$this->formDef['db_table'].$escape." WHERE ".$this->formDef['db_table_idx']." = ".$record_id." AND ".$this->getAuthSQL($perm);
         if($record = $app->db->queryOneRecord($sql)) {
            return true;
         } else {
            return false;
         }
      } else {
         $result = false;
         if($this->formDef["auth_preset"]["userid"] == $_SESSION["s"]["user"]["userid"] && stristr($perm,$this->formDef["auth_preset"]["perm_user"])) $result = true;
         if($this->formDef["auth_preset"]["groupid"] == $_SESSION["s"]["user"]["groupid"] && stristr($perm,$this->formDef["auth_preset"]["perm_group"])) $result = true;
         if(@stristr($perm,$this->formDef["auth_preset"]["perm_other"])) $result = true;
         // if preset == 0, everyone can insert a record of this type
         if($this->formDef["auth_preset"]["userid"] == 0 AND $this->formDef["auth_preset"]["groupid"] == 0) $result = true;
         return $result;
      }
   }
   function getNextTab() {
      // Welcher Tab wird angezeigt
      if($this->errorMessage == '') {
          // wenn kein Fehler vorliegt
         if($_REQUEST["next_tab"] != '') {
            // wenn nächster Tab bekannt
            $active_tab = $_REQUEST["next_tab"];
          } else {
              // ansonsten ersten tab nehmen
              $active_tab = $this->formDef['tab_default'];
          }
      } else {
          // bei Fehlern den gleichen Tab nochmal anzeigen
          $active_tab = $_SESSION["s"]["form"]["tab"];
      }
      return $active_tab;
   }
   function getCurrentTab() {
      return $_SESSION["s"]["form"]["tab"];
   }
        function datalogSave($action,$primary_id,$record_new) {
                global $app,$conf;
                // Füge Backticks nur bei unvollständigen Tabellennamen ein
                if(stristr($this->formDef['db_table'],'.')) {
                        $escape = '';
                } else {
                        $escape = '`';
                }
                if($action == "UPDATE") {
                        $sql = "SELECT * FROM ".$escape.$this->formDef['db_table'].$escape." WHERE ".$this->formDef['db_table_idx']." = ".$primary_id;
                        $record_old = $app->db->queryOneRecord($sql);
                } else {
                        $record_old = array();
                }
                $diffrec = array();
                if(is_array($record_new)) {
                        foreach($record_new as $key => $val) {
                                if($record_old[$key] != $val) {
                                        // Datensatz hat sich geändert
                                        $diffrec[$key] = array('old' => $record_old[$key],
                                                                           'new' => $val);
                                }
                        }
                }
                if(count($diffrec) > 0) {
                        $diffstr = $app->db->quote(serialize($diffrec));
                        $username = $app->db->quote($_SESSION["s"]["user"]["username"]);
                        $dbidx = $this->formDef['db_table_idx'].":".$primary_id;
                        $action = ($action == 'INSERT')?'i':'u';
                        $sql = "INSERT INTO sys_datalog (dbtable,dbidx,action,tstamp,user,data) VALUES ('".$this->formDef['db_table']."','$dbidx','$action','".time()."','$username','$diffstr')";
                        $app->db->query($sql);
                }
                return true;
        }
        function getAuthSQL($perm) {
                $sql = '(';
                $sql .= "(sys_userid = ".$_SESSION["s"]["user"]["userid"]." AND sys_perm_user like '%$perm%') OR  ";
                $sql .= "(sys_groupid IN (".$_SESSION["s"]["user"]["groups"].") AND sys_perm_group like '%$perm%') OR ";
                $sql .= "sys_perm_other like '%$perm%'";
                $sql .= ')';
                return $sql;
        }
        /*
        Diese funktion überprüft, ob ein User die Berechtigung $perm für den Datensatz mit der ID $record_id
        hat. It record_id = 0, dann wird gegen die user Defaults des Formulares getestet.
        */
        function checkPerm($record_id,$perm) {
                global $app;
                if($record_id > 0) {
                        // Füge Backticks nur bei unvollständigen Tabellennamen ein
                        if(stristr($this->formDef['db_table'],'.')) {
                                $escape = '';
                        } else {
                                $escape = '`';
                        }
                        $sql = "SELECT ".$this->formDef['db_table_idx']." FROM ".$escape.$this->formDef['db_table'].$escape." WHERE ".$this->formDef['db_table_idx']." = ".$record_id." AND ".$this->getAuthSQL($perm);
                        if($record = $app->db->queryOneRecord($sql)) {
                                return true;
                        } else {
                                return false;
                        }
                } else {
                        $result = false;
                        if($this->formDef["auth_preset"]["userid"] == $_SESSION["s"]["user"]["userid"] && stristr($perm,$this->formDef["auth_preset"]["perm_user"])) $result = true;
                        if($this->formDef["auth_preset"]["groupid"] == $_SESSION["s"]["user"]["groupid"] && stristr($perm,$this->formDef["auth_preset"]["perm_group"])) $result = true;
                        if(@stristr($perm,$this->formDef["auth_preset"]["perm_other"])) $result = true;
                        // if preset == 0, everyone can insert a record of this type
                        if($this->formDef["auth_preset"]["userid"] == 0 AND $this->formDef["auth_preset"]["groupid"] == 0) $result = true;
                        return $result;
                }
        }
        function getNextTab() {
                // Welcher Tab wird angezeigt
                if($this->errorMessage == '') {
                    // wenn kein Fehler vorliegt
                        if($_REQUEST["next_tab"] != '') {
                                // wenn nächster Tab bekannt
                                $active_tab = $_REQUEST["next_tab"];
                    } else {
                        // ansonsten ersten tab nehmen
                        $active_tab = $this->formDef['tab_default'];
                    }
                } else {
                    // bei Fehlern den gleichen Tab nochmal anzeigen
                    $active_tab = $_SESSION["s"]["form"]["tab"];
                }
                return $active_tab;
        }
        function getCurrentTab() {
                return $_SESSION["s"]["form"]["tab"];
        }
}
?>