LDAPAccountManager/lam/lib/modules/range.inc

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2014-03-18 16:31:33 +00:00
<?php
/*
$Id$
This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
Copyright (C) 2008 Thomas Manninger
2008 - 2014 Roland Gruber
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* Manages DHCP ranges for DHCP server.
*
* @package modules
*
* @author Thomas Manninger
* @author Roland Gruber
*/
/**
* Manages DHCP ranges for DHCP server.
*
* @package modules
*/
class range extends baseModule {
/** subnet */
public $subnet;
/** ranges */
public $ranges;
/** Range -> Function attibute_processed already running? */
public $processed;
/** For check, if IPs overlaped. */
public $overlaped;
/**
* Returns meta data that is interpreted by parent class
*
* @return array array with meta data
*
* @see baseModule::get_metaData()
*/
public function get_metaData() {
$return = array();
// manages dhcp accounts
$return["account_types"] = array("dhcp");
// alias name
$return["alias"] = _("Ranges");
// this is a base module
$return["is_base"] = false;
// icon
$return['icon'] = 'ipRange.png';
// RDN attribute
$return["RDN"] = array("cn" => "high");
// LDAP filter
$return["ldap_filter"] = array('or'=>"(objectClass=dhcpSubnet)");
// module dependencies
$return['dependencies'] = array('depends' => array('dhcp_settings'), 'conflicts' => array());
// managed object classes
$return['objectClasses'] = array();
// managed attributes
$return['attributes'] = array('dhcpRange');
// help Entries
$return['help'] = array(
'range_from' => array(
"Headline" => _("Range from"),
"Text" => _("The starting IP address of the range.")
) , 'range_to' => array(
"Headline" => _("Range to"),
"Text" => _("The ending IP address of the range.")
) , 'drop_range' => array(
"Headline" => _("Delete range"),
"Text" => _("Deletes an IP range.")
) , 'add_range' => array(
"Headline" => _("New range"),
"Text" => _("Adds input fields for a new IP range.")
) );
// available PDF fields
$return['PDF_fields'] = array('ranges' => _('Ranges'));
return $return;
}
/**
* This function fills the error message array with messages.
*/
public function load_Messages() {
$this->messages['range_errors'][0] = array('ERROR', _('One or more errors occured. The invalid fields are marked.'), '');
$this->messages['add_range'][0] = array('ERROR', _('New range'), _('Adding the range failed because errors occured.'));
$this->messages['drop_range'][0] = array('ERROR', _('Delete range'), _('It is not possible to delete all ranges.'));
}
/**
* Calculates the subnet for a given IP and netmask.
*
* @param String $ip IP address
* @param String $mask network mask
*/
private static function calculateSubnet($ip, $mask) {
return long2ip(ip2long($ip) & ip2long($mask));
}
/**
* Checks if the first IP is smaller than the second IP.
*
* @param String $first_ip first ip
* @param String $second_ip second ip
*
* @return true, if it's a valid Range, else false;
**/
public function check_range($first_ip, $second_ip) {
$ex_first = explode(".", $first_ip);
$ex_second = explode(".", $second_ip);
if ($ex_first[0]<$ex_second[0])
return true;
if ($ex_first[1]<$ex_second[1])
return true;
if ($ex_first[2]<$ex_second[2])
return true;
if ($ex_first[3]<$ex_second[3]) {
return true;
}
return false;
}
/**
* Check if an IP address is in the correct subnet.
*
* @param String $ip IP address
* @param String $subnet subnet
* @param String $mask network mask
* @return true if the range and subnet valid, else false
**/
public static function check_subnet_range($ip, $subnet, $mask) {
$ipSubnet = range::calculateSubnet($ip, $mask);
return ($subnet == $ipSubnet);
}
/**
*
* Checked, if Ranges are overlaped.
*
* @param first ip
* @param second ip
*
* @return false, if overlaped, else true.
*
**/
function overlaped_range($ip,$ipB) {
$ex = explode(".", $ip);
$exB = explode(".", $ipB);
if(!is_array($this->overlaped)) {
$this->overlaped = array();
}
for($n=$ex[3];$n<=$exB[3];$n++) {
if (in_array($n, $this->overlaped)) {
return false;
}
else {
$this->overlaped[] = $n;
}
}
return true;
}
/**
*
* Reset the overlaped_range() function
*
**/
function reset_overlaped_range() {
$this->overlaped = array();
}
/**
* Controls if the module button the account page is visible and activated.
*
* @return string status ("enabled", "disabled", "hidden")
*/
public function getButtonStatus() {
if ($this->getAccountContainer()->dn_orig!=$_SESSION['config']->get_suffix('dhcp')) {
return "enabled";
}
else {
return "hidden";
}
}
/**
* This function loads all needed LDAP attributes.
*
* @param array $attr list of attributes
*/
function load_attributes($attr) {
parent::load_attributes($attr);
// Load DHCP Options:
if ($this->getAccountContainer()->dn_orig!=$_SESSION['config']->get_suffix('dhcp')) {
$this->orig = $attr;
$this->attributes = $attr;
// Load DHCP Options:
if (isset($attr['dhcpRange']) && is_array($attr['dhcpRange'])) {
natcasesort($attr['dhcpRange']);
foreach($attr['dhcpRange'] AS $id=>$value) {
$ex = explode(" ", $value);
// DHCP Range ins Array laden:
$this->ranges[$id] = array('range_start'=>$ex[0],'range_end'=>$ex[1]);
}
}
}
}
/**
*
* Adapt the Ranges with the subnet.
*
* @return true, if ranges were edit.
*
**/
public function reload_ranges() {
$range_edit = false; // Range were edited?
// Only run it, when ranges already exists:
if(is_array($this->ranges)) {
$ex_subnet = explode(".", $this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0]);
$dhcpAttrs = $this->getAccountContainer()->getAccountModule('dhcp_settings')->getAttributes();
$mask = $this->getAccountContainer()->getAccountModule('dhcp_settings')->getDHCPOption('subnet-mask');
foreach ($this->ranges AS $id=>$arr) {
if (!empty($this->ranges[$id]['range_start']) && !range::check_subnet_range($this->ranges[$id]['range_start'],$dhcpAttrs['cn'][0], $mask)) {
// Range anpassen:
$ex = explode(".", $this->ranges[$id]['range_start']);
$tmp = $this->ranges[$id]['range_start'];
$this->ranges[$id]['range_start'] = $ex_subnet['0'].".".$ex_subnet['1'].".".$ex_subnet['2'].".".$ex['3'];
if($tmp!=$this->ranges[$id]['range_start'])
$range_edit = true;
}
if (!empty($this->ranges[$id]['range_end']) && !range::check_subnet_range($this->ranges[$id]['range_end'],$dhcpAttrs['cn'][0], $mask)) {
// Range anpassen:
$ex = explode(".", $this->ranges[$id]['range_end']);
$tmp = $this->ranges[$id]['range_end'];
$this->ranges[$id]['range_end'] = $ex_subnet['0'].".".$ex_subnet['1'].".".$ex_subnet['2'].".".$ex['3'];
if($tmp!=$this->ranges[$id]['range_end'])
$range_edit = true;
}
}
if ($range_edit) {
// sort the range new, id it was edit.
foreach($this->ranges AS $id=>$arr) {
$this->attributes['dhcpRange'][$id] = $this->ranges[$id]['range_start']." ".$this->ranges[$id]['range_end'];
}
}
}
return $range_edit;
}
/**
* Processes user input of the primary module page.
* It checks if all input values are correct and updates the associated LDAP attributes.
*
* @return array list of info/error messages
*/
public function process_attributes() {
$errors = array();
$droped = false; // Was a Range droped???
if ($this->getAccountContainer()->dn_orig!=$_SESSION['config']->get_suffix('dhcp')) {
if ($this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0]!="") {
$was_a_error = false;
$this->reset_overlaped_range();
foreach($this->ranges AS $id=>$arr) {
// Check if range is to drop
if (isset($_POST['drop_range_'.$id])) {
// Drop Range:
unset($this->ranges[$id]);
unset($this->attributes['dhcpRange'][$id]);
$droped = true;
continue;
}
// if the inputs are empty, then do nothing:
if ($_POST['range_start_'.$id]=="" && $_POST['range_end_'.$id]=="") {
unset($this->attributes['dhcpRange'][$id]);
}
else {
$mask = $this->getAccountContainer()->getAccountModule('dhcp_settings')->getDHCPOption('subnet-mask');
// Check range_start:
$_POST['range_start_'.$id] = trim($_POST['range_start_'.$id]);
if (!check_ip($_POST['range_start_'.$id])) {
$this->ranges[$id]['range_start'] = $_POST['range_start_'.$id];
$was_a_error = true;
}
else
{
$this->ranges[$id]['range_start'] = $_POST['range_start_'.$id];
}
// Check end:
$_POST['range_end_'.$id] = trim($_POST['range_end_'.$id]);
if (!check_ip($_POST['range_end_'.$id])) {
$this->ranges[$id]['range_end'] = $_POST['range_end_'.$id];
$was_a_error = true;
}
else
{
$this->ranges[$id]['range_end'] = $_POST['range_end_'.$id];
}
// Check if ip overlaped:
if(!$this->overlaped_range($_POST['range_start_'.$id],$_POST['range_end_'.$id])) {
$was_a_error = true;
}
// Check if Subnet and range first are valid:
if (!range::check_subnet_range($_POST['range_start_'.$id],$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0], $mask)) {
$was_a_error = true;
}
// Check if Subnet and range last are valid:
if (!range::check_subnet_range($_POST['range_end_'.$id],$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0], $mask)) {
$was_a_error = true;
}
// Check if Range is valid
if (!$this->check_range($_POST['range_start_'.$id],$_POST['range_end_'.$id])) {
$was_a_error = true;
}
// Check, if range_start and range_end are ok!
if (!$was_a_error) {
$this->attributes['dhcpRange'][$id] = $_POST['range_start_'.$id]." ".$_POST['range_end_'.$id];
}
else {
unset($this->attributes['dhcpRange'][$id]);
}
}
}
}
// Check if there was a error:
if ($was_a_error) {
$errors[] = $this->messages['range_errors'][0];
}
// Add new Range
if(isset($_POST['add_range'])) {
// Check, if there where no errors:
if ($was_a_error) {
$errors[] = $this->messages['add_range'][0];
}
else
{
// Add Range:
$this->ranges[] = array('range_start'=>'','range_end'=>'');
}
}
$this->processed = true;
}
return $errors;
}
/**
* Returns the HTML meta data for the main account page.
*
* @return htmlElement HTML meta data
*/
public function display_html_attributes() {
$return = new htmlTable();
if ($this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0]=="") {
$return->addElement(new htmlStatusMessage('INFO', _("Please fill out the DHCP settings first.")));
}
else {
// If $ranges is not a array, then create it
if (!is_array($this->ranges)) {
$this->ranges = array();
}
$this->reset_overlaped_range();
$mask = $this->getAccountContainer()->getAccountModule('dhcp_settings')->getDHCPOption('subnet-mask');
foreach($this->ranges AS $id=>$arr) {
// Range start
$error = "";
if (isset($this->ranges[$id]['range_start']) && !empty($this->ranges[$id]['range_start'])) {
if ($this->processed && !check_ip($this->ranges[$id]['range_start'])) {
$error = _("The IP address is invalid.");
} elseif($this->processed && !$this->check_range($this->ranges[$id]['range_start'],$this->ranges[$id]['range_end'])) {
$error = _("The range end needs to be greater than the range start.");
} elseif ($this->processed && !range::check_subnet_range($this->ranges[$id]['range_start'],$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0], $mask)) {
$error = _("The IP does not match the subnet.");
} elseif ($this->processed && !$this->overlaped_range($this->ranges[$id]['range_start'],$this->ranges[$id]['range_end']) ) {
$error = _("The range conflicts with another range.");
}
}
$fromInput = new htmlTableExtendedInputField(_('Range from'), 'range_start_'.$id, $this->ranges[$id]['range_start'], 'range_from');
$fromInput->setRequired(true);
$return->addElement($fromInput);
$return->addElement(new htmlOutputText($error), true);
// Range end
$error = "";
if (isset($this->ranges[$id]['range_end']) && !empty($this->ranges[$id]['range_end'])) {
if ($this->processed && !check_ip($this->ranges[$id]['range_end'])) {
$error = _("The IP address is invalid.");
} elseif ($this->processed && !range::check_subnet_range($this->ranges[$id]['range_end'],$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0], $mask)) {
$error = _("The IP does not match the subnet.");
}
}
$toInput = new htmlTableExtendedInputField(_('Range to'), 'range_end_'.$id, $this->ranges[$id]['range_end'], 'range_to');
$toInput->setRequired(true);
$return->addElement($toInput);
$return->addElement(new htmlOutputText($error), true);
// Drop range:
$dropButton = new htmlButton('drop_range_'.$id, _('Delete range'));
$dropButton->colspan = 2;
$return->addElement($dropButton);
$return->addElement(new htmlHelpLink('drop_range'), true);
$return->addElement(new htmlSpacer(null, '10px'), true);
}
// add new range
$addButton = new htmlButton('add_range', _('New range'));
$addButton->colspan = 2;
$return->addElement($addButton);
$return->addElement(new htmlHelpLink('add_range'));
}
return $return;
}
/**
* Returns a list of modifications which have to be made to the LDAP account.
*
* @return array list of modifications
* <br>This function returns an array with 3 entries:
* <br>array( DN1 ('add' => array($attr), 'remove' => array($attr), 'modify' => array($attr)), DN2 .... )
* <br>DN is the DN to change. It may be possible to change several DNs (e.g. create a new user and add him to some groups via attribute memberUid)
* <br>"add" are attributes which have to be added to LDAP entry
* <br>"remove" are attributes which have to be removed from LDAP entry
* <br>"modify" are attributes which have to been modified in LDAP entry
* <br>"info" are values with informational value (e.g. to be used later by pre/postModify actions)
*/
public function save_attributes() {
$return = array();
// Get easy attributes
if ($this->getAccountContainer()->dn_orig!=$_SESSION['config']->get_suffix('dhcp')) {
$return = $this->getAccountContainer()->save_module_attributes($this->attributes, $this->orig);
}
// Return attributes
return $return;
}
/**
* Returns the PDF entries for this module.
*
* @return array list of possible PDF entries
*/
function get_pdfEntries() {
$return = array();
if (is_array($this->ranges) && (sizeof($this->ranges) > 0)) {
$start = $this->ranges[0]['range_start'];
$end = $this->ranges[0]['range_end'];
$return[get_class($this) . '_ranges'] = array('<block><key>' . _('Ranges') . '</key><tr><td align=\"L\">' . $start . " - " . $end . '</td></tr></block>');
for ($i = 1; $i < sizeof($this->ranges); $i++) {
$start = $this->ranges[$i]['range_start'];
$end = $this->ranges[$i]['range_end'];
$return[get_class($this) . '_ranges'][] = '<block><tr><td align=\"L\">' . $start . " - " . $end . '</td></tr></block>';
}
}
return $return;
}
}
?>