40   var $casuserfile = null;  variable in auth_plugin_authplaincas
71       $this->casuserfile = $config_cascade['plaincasauth.users']['default'];
74       $this->casuserfile = DOKU_CONF . 'users.auth.plaincas.php';
79     if (!@is_readable($this->casuserfile)) {
80       if(! fopen($this->casuserfile, 'w') ) {
84       elseif(!@is_readable($this->casuserfile)){
465       if (io_saveFile($this->casuserfile,$userline,true)) {
468         msg('The '.$this->casuserfile.' file is not writable. Please inform the Wiki-Admin',-1);
511     if (!io_saveFile($this->casuserfile,$userline,true)) {
541     if (io_deleteFromFile($this->casuserfile,$pattern,true)) {
582     if(!@file_exists($this->casuserfile)) return;
584     $lines = file($this->casuserfile);