");
		exit;
	}
	// delete group(s)
	if ($_POST['del_group']){
		// search for checkboxes
		$groups = array_keys($_POST, "on");
		$groupstr = implode(";", $groups);
		echo(" ");
		}
		exit;
}
echo $_SESSION['header'];
echo "
listgroups \n";
echo " \n";
echo "\n";
echo "\n";
// generate attribute-description table
$attr_array;	// list of LDAP attributes to show
$desc_array;	// list of descriptions for the attributes
$attr_string = $_SESSION["config"]->get_grouplistAttributes();
$temp_array = explode(";", $attr_string);
$hash_table = $_SESSION["ldap"]->attributeGroupArray();
// get current page
$page = $_GET["page"];
if (!$page) $page = 1;
// take maximum count of group entries shown on one page out of session
if ($_SESSION["config"]->get_MaxListEntries() <= 0)
	$max_pageentrys = 10;	// default setting, if not yet set
else
	$max_pageentrys = $_SESSION["config"]->get_MaxListEntries();
// generate column attributes and descriptions
for ($i = 0; $i < sizeof($temp_array); $i++) {
	// if value is predifined, look up description in hash_table
	if (substr($temp_array[$i],0,1) == "#") {
		$attr = substr($temp_array[$i],1);
		$attr_array[$i] = $attr;
		$desc_array[] = $hash_table[$attr];
	}
	// if not predefined, the attribute is seperated by a ":" from description
	else {
		$attr = explode(":", $temp_array[$i]);
		$attr_array[$i] = $attr[0];
		$desc_array[$i] = $attr[1];
	}
}
// check search suffix
if ($_POST['grp_suffix']) $grp_suffix = $_POST['grp_suffix'];  // new suffix selected via combobox
elseif ($_SESSION['grp_suffix']) $grp_suffix = $_SESSION['grp_suffix'];  // old suffix from session
else $grp_suffix = $_SESSION["config"]->get_GroupSuffix();  // default suffix
session_register('grp_suffix');
// generate search filter for sort links
$searchfilter = "";
for ($k = 0; $k < sizeof($desc_array); $k++) {
	if ($_POST["filter" . strtolower($attr_array[$k])]) {
		$searchfilter = $searchfilter . "&filter" . strtolower($attr_array[$k]) . "=".
			$_POST["filter" . strtolower($attr_array[$k])];
	}
}
if (! $_GET['norefresh']) {
	// configure search filter
	// Groups have the attribute "posixGroup"
	$filter = "(&(objectClass=posixGroup)";
	for ($k = 0; $k < sizeof($desc_array); $k++) {
	if ($_POST["filter" . strtolower($attr_array[$k])])
		$filter = $filter . "(" . strtolower($attr_array[$k]) . "=" .
		$_POST["filter" . strtolower($attr_array[$k])] . ")";
	else
		$_POST["filter" . strtolower($attr_array[$k])] = "";
	}
	$filter = $filter . ")";
	$attrs = $attr_array;
	$sr = @ldap_search($_SESSION["ldap"]->server(),
		$grp_suffix,
		$filter, $attrs);
	if ($sr) {
		$grp_info = ldap_get_entries($_SESSION["ldap"]->server, $sr);
		ldap_free_result($sr);
		if ($grp_info["count"] == 0) StatusMessage("WARN", "", _("No Groups found!"));
		// delete first array entry which is "count"
		array_shift($grp_info);
		// sort rows by sort column ($sort)
		usort($grp_info, "cmp_array");
	}
	else StatusMessage("ERROR", _("LDAP Search failed! Please check your preferences."), _("No Groups found!"));
}
else {
	if (sizeof($grp_info) == 0) StatusMessage("WARN", "", _("No Groups found!"));
	// sort rows by sort column ($sort)
	if ($grp_info) usort($grp_info, "cmp_array");
}
echo ("\n");
echo "\n";
/**
 * @brief draws a navigation bar to switch between pages
 *
 *
 * @return void
 */
function draw_navigation_bar ($count) {
  global $max_pageentrys;
  global $page;
  global $sort;
  global $searchfilter;
  echo ("\n");
}
// compare function used for usort-method
// rows are sorted with the first attribute entry of the sort column
// if objects have attributes with multiple values the others are ignored
function cmp_array($a, $b) {
	// sort specifies the sort column
	global $sort;
	global $attr_array;
	// sort by first attribute with name $sort
	if (!$sort) $sort = strtolower($attr_array[0]);
	if ($a[$sort][0] == $b[$sort][0]) return 0;
	else if ($a[$sort][0] == max($a[$sort][0], $b[$sort][0])) return 1;
	else return -1;
}
?>