498 lines
16 KiB
PHP
498 lines
16 KiB
PHP
<?php
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/*
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$Id$
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This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
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Copyright (C) 2008 Thomas Manninger
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2008 - 2010 Roland Gruber
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* Manages DHCP ranges for DHCP server.
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*
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* @package modules
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*
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* @author Thomas Manninger
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* @author Roland Gruber
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*/
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/**
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* Manages DHCP ranges for DHCP server.
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*
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* @package modules
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*/
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class range extends baseModule {
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/** subnet */
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public $subnet;
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/** ranges */
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public $ranges;
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/** Range -> Function attibute_processed already running? */
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public $processed;
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/** For check, if IPs overlaped. */
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public $overlaped;
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/**
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* Returns meta data that is interpreted by parent class
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*
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* @return array array with meta data
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*
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* @see baseModule::get_metaData()
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*/
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public function get_metaData() {
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$return = array();
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// manages dhcp accounts
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$return["account_types"] = array("dhcp");
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// alias name
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$return["alias"] = _("Ranges");
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// this is a base module
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$return["is_base"] = false;
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// icon
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$return['icon'] = 'ipRange.png';
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// RDN attribute
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$return["RDN"] = array("cn" => "high");
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// LDAP filter
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$return["ldap_filter"] = array('or'=>"(objectClass=dhcpSubnet)");
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// module dependencies
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$return['dependencies'] = array('depends' => array('dhcp_settings'), 'conflicts' => array());
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// managed object classes
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$return['objectClasses'] = array();
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// managed attributes
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$return['attributes'] = array('dhcpRange');
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// help Entries
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$return['help'] = array(
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'range_from' => array(
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"Headline" => _("Range from"),
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"Text" => _("The starting IP address of the range.")
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) , 'range_to' => array(
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"Headline" => _("Range to"),
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"Text" => _("The ending IP address of the range.")
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) , 'drop_range' => array(
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"Headline" => _("Delete range"),
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"Text" => _("Deletes an IP range.")
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) , 'add_range' => array(
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"Headline" => _("New range"),
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"Text" => _("Adds input fields for a new IP range.")
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) );
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// available PDF fields
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$return['PDF_fields'] = array('ranges' => _('Ranges'));
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return $return;
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}
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/**
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* This function fills the error message array with messages.
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*/
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public function load_Messages() {
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$this->messages['range_errors'][0] = array('ERROR', _('One or more errors occured. The invalid fields are marked.'), '');
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$this->messages['add_range'][0] = array('ERROR', _('New range'), _('Adding the range failed because errors occured.'));
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$this->messages['drop_range'][0] = array('ERROR', _('Delete range'), _('It is not possible to delete all ranges.'));
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}
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/**
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* Calculates the subnet for a given IP and netmask.
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*
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* @param String $ip IP address
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* @param String $mask network mask
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*/
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private static function calculateSubnet($ip, $mask) {
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return long2ip(ip2long($ip) & ip2long($mask));
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}
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/**
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* Checks if the first IP is smaller than the second IP.
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*
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* @param String $first_ip first ip
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* @param String $second_ip second ip
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*
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* @return true, if it's a valid Range, else false;
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**/
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public function check_range($first_ip, $second_ip) {
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$ex_first = explode(".", $first_ip);
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$ex_second = explode(".", $second_ip);
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if ($ex_first[0]<$ex_second[0])
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return true;
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if ($ex_first[1]<$ex_second[1])
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return true;
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if ($ex_first[2]<$ex_second[2])
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return true;
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if ($ex_first[3]<$ex_second[3]) {
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return true;
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}
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return false;
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}
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/**
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* Check if an IP address is in the correct subnet.
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*
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* @param String $ip IP address
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* @param String $subnet subnet
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* @param String $mask network mask
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* @return true if the range and subnet valid, else false
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**/
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public static function check_subnet_range($ip, $subnet, $mask) {
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$ipSubnet = range::calculateSubnet($ip, $mask);
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return ($subnet == $ipSubnet);
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}
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/**
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*
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* Checked, if Ranges are overlaped.
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*
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* @param first ip
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* @param second ip
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*
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* @return false, if overlaped, else true.
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*
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**/
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function overlaped_range($ip,$ipB) {
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$ex = explode(".", $ip);
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$exB = explode(".", $ipB);
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if(!is_array($this->overlaped)) {
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$this->overlaped = array();
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}
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for($n=$ex[3];$n<=$exB[3];$n++) {
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if (in_array($n, $this->overlaped)) {
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return false;
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}
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else {
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$this->overlaped[] = $n;
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}
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}
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return true;
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}
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/**
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*
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* Reset the overlaped_range() function
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*
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**/
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function reset_overlaped_range() {
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$this->overlaped = array();
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}
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/**
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* Controls if the module button the account page is visible and activated.
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*
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* @return string status ("enabled", "disabled", "hidden")
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*/
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public function getButtonStatus() {
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if ($this->getAccountContainer()->dn_orig!=$_SESSION['config']->get_suffix('dhcp')) {
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return "enabled";
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}
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else {
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return "hidden";
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}
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}
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/**
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* This function loads all needed LDAP attributes.
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*
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* @param array $attr list of attributes
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*/
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function load_attributes($attr) {
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parent::load_attributes($attr);
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// Load DHCP Options:
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if ($this->getAccountContainer()->dn_orig!=$_SESSION['config']->get_suffix('dhcp')) {
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$this->orig = $attr;
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$this->attributes = $attr;
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// Load DHCP Options:
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if (is_array($attr['dhcpRange'])) {
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foreach($attr['dhcpRange'] AS $id=>$value) {
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$ex = explode(" ", $value);
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// DHCP Range ins Array laden:
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$this->ranges[$id] = array('range_start'=>$ex[0],'range_end'=>$ex[1]);
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}
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}
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}
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}
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/**
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*
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* Adapt the Ranges with the subnet.
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*
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* @return true, if ranges were edit.
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*
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**/
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public function reload_ranges() {
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// Only run it, when ranges already exists:
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if(is_array($this->ranges)) {
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$ex_subnet = explode(".", $this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0]);
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$range_edit = false; // Range were edit?
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$dhcpAttrs = $this->getAccountContainer()->getAccountModule('dhcp_settings')->getAttributes();
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$mask = $this->getAccountContainer()->getAccountModule('dhcp_settings')->getDHCPOption('subnet-mask');
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foreach ($this->ranges AS $id=>$arr) {
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if (!empty($this->ranges[$id]['range_start']) && !range::check_subnet_range($this->ranges[$id]['range_start'],$dhcpAttrs['cn'][0], $mask)) {
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// Range anpassen:
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$ex = explode(".", $this->ranges[$id]['range_start']);
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$tmp = $this->ranges[$id]['range_start'];
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$this->ranges[$id]['range_start'] = $ex_subnet['0'].".".$ex_subnet['1'].".".$ex_subnet['2'].".".$ex['3'];
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if($tmp!=$this->ranges[$id]['range_start'])
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$range_edit = true;
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}
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if (!empty($this->ranges[$id]['range_end']) && !range::check_subnet_range($this->ranges[$id]['range_end'],$dhcpAttrs['cn'][0], $mask)) {
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// Range anpassen:
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$ex = explode(".", $this->ranges[$id]['range_end']);
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$tmp = $this->ranges[$id]['range_end'];
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$this->ranges[$id]['range_end'] = $ex_subnet['0'].".".$ex_subnet['1'].".".$ex_subnet['2'].".".$ex['3'];
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if($tmp!=$this->ranges[$id]['range_end'])
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$range_edit = true;
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}
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}
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if ($range_edit) {
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// sort the range new, id it was edit.
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foreach($this->ranges AS $id=>$arr) {
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$this->attributes['dhcpRange'][$id] = $this->ranges[$id]['range_start']." ".$this->ranges[$id]['range_end'];
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}
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}
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}
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return $range_edit;
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}
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/**
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* Processes user input of the primary module page.
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* It checks if all input values are correct and updates the associated LDAP attributes.
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*
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* @return array list of info/error messages
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*/
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public function process_attributes() {
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$errors = array();
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$droped = false; // Was a Range droped???
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if ($this->getAccountContainer()->dn_orig!=$_SESSION['config']->get_suffix('dhcp')) {
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if ($this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0]!="") {
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$was_a_error = false;
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$this->reset_overlaped_range();
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foreach($this->ranges AS $id=>$arr) {
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// Check if range is to drop
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if (isset($_POST['drop_range_'.$id])) {
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// Drop Range:
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unset($this->ranges[$id]);
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unset($this->attributes['dhcpRange'][$id]);
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$droped = true;
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continue;
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}
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// if the inputs are empty, then do nothing:
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if ($_POST['range_start_'.$id]=="" && $_POST['range_end_'.$id]=="") {
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unset($this->attributes['dhcpRange'][$id]);
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}
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else {
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$mask = $this->getAccountContainer()->getAccountModule('dhcp_settings')->getDHCPOption('subnet-mask');
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// Check range_start:
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$_POST['range_start_'.$id] = trim($_POST['range_start_'.$id]);
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if (!check_ip($_POST['range_start_'.$id])) {
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$this->ranges[$id]['range_start'] = $_POST['range_start_'.$id];
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$was_a_error = true;
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}
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else
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{
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$this->ranges[$id]['range_start'] = $_POST['range_start_'.$id];
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}
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// Check end:
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$_POST['range_end_'.$id] = trim($_POST['range_end_'.$id]);
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if (!check_ip($_POST['range_end_'.$id])) {
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$this->ranges[$id]['range_end'] = $_POST['range_end_'.$id];
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$was_a_error = true;
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}
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else
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{
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$this->ranges[$id]['range_end'] = $_POST['range_end_'.$id];
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}
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// Check if ip overlaped:
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if(!$this->overlaped_range($_POST['range_start_'.$id],$_POST['range_end_'.$id])) {
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$was_a_error = true;
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}
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// Check if Subnet and range first are valid:
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if (!range::check_subnet_range($_POST['range_start_'.$id],$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0], $mask)) {
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$was_a_error = true;
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}
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// Check if Subnet and range last are valid:
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if (!range::check_subnet_range($_POST['range_end_'.$id],$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0], $mask)) {
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$was_a_error = true;
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}
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// Check if Range is valid
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if (!$this->check_range($_POST['range_start_'.$id],$_POST['range_end_'.$id])) {
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$was_a_error = true;
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}
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// Check, if range_start and range_end are ok!
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if (!$was_a_error) {
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$this->attributes['dhcpRange'][$id] = $_POST['range_start_'.$id]." ".$_POST['range_end_'.$id];
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}
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else {
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unset($this->attributes['dhcpRange'][$id]);
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}
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}
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}
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}
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// Check if there was a error:
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if ($was_a_error) {
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$errors[] = $this->messages['range_errors'][0];
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}
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// Add new Range
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if(isset($_POST['add_range'])) {
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// Check, if there where no errors:
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if ($was_a_error) {
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$errors[] = $this->messages['add_range'][0];
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}
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else
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{
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// Add Range:
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$this->ranges[] = array('range_start'=>'','range_end'=>'');
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}
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}
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$this->processed = true;
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}
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return $errors;
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}
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/**
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* Returns the HTML meta data for the main account page.
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*
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* @return htmlElement HTML meta data
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*/
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public function display_html_attributes() {
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$return = new htmlTable();
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if ($this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0]=="") {
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$return->addElement(new htmlStatusMessage('INFO', _("Please fill out the DHCP settings first.")));
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}
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else {
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// If $ranges is not a array, then create it
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if (!is_array($this->ranges)) {
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$this->ranges = array();
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}
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$this->reset_overlaped_range();
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$mask = $this->getAccountContainer()->getAccountModule('dhcp_settings')->getDHCPOption('subnet-mask');
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foreach($this->ranges AS $id=>$arr) {
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// Range start
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if ($this->processed && !check_ip($this->ranges[$id]['range_start'])) {
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$error = _("The IP address is invalid.");
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} elseif($this->processed && !$this->check_range($this->ranges[$id]['range_start'],$this->ranges[$id]['range_end'])) {
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$error = _("The range end needs to be greater than the range start.");
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} elseif ($this->processed && !range::check_subnet_range($this->ranges[$id]['range_start'],$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0], $mask)) {
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$error = _("The IP does not match the subnet.");
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} elseif ($this->processed && !$this->overlaped_range($this->ranges[$id]['range_start'],$this->ranges[$id]['range_end']) ) {
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$error = _("The range conflicts with another range.");
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} else {
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$error = "";
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}
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$fromInput = new htmlTableExtendedInputField(_('Range from'), 'range_start_'.$id, $this->ranges[$id]['range_start'], 'range_from');
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$fromInput->setRequired(true);
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$return->addElement($fromInput);
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$return->addElement(new htmlOutputText($error), true);
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// Range end
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if ($this->processed && !check_ip($this->ranges[$id]['range_end'])) {
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$error = _("The IP address is invalid.");
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} elseif ($this->processed && !range::check_subnet_range($this->ranges[$id]['range_end'],$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes['cn'][0], $mask)) {
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$error = _("The IP does not match the subnet.");
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} else {
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$error = "";
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}
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$toInput = new htmlTableExtendedInputField(_('Range to'), 'range_end_'.$id, $this->ranges[$id]['range_end'], 'range_to');
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$toInput->setRequired(true);
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$return->addElement($toInput);
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$return->addElement(new htmlOutputText($error), true);
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// Drop range:
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$dropButton = new htmlButton('drop_range_'.$id, _('Delete range'));
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$dropButton->colspan = 2;
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$return->addElement($dropButton);
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$return->addElement(new htmlHelpLink('drop_range'), true);
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$return->addElement(new htmlSpacer(null, '10px'), true);
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}
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// add new range
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$addButton = new htmlButton('add_range', _('New range'));
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$addButton->colspan = 2;
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$return->addElement($addButton);
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$return->addElement(new htmlHelpLink('add_range'));
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}
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return $return;
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}
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/**
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* Returns a list of modifications which have to be made to the LDAP account.
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*
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* @return array list of modifications
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* <br>This function returns an array with 3 entries:
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* <br>array( DN1 ('add' => array($attr), 'remove' => array($attr), 'modify' => array($attr)), DN2 .... )
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* <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)
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* <br>"add" are attributes which have to be added to LDAP entry
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* <br>"remove" are attributes which have to be removed from LDAP entry
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* <br>"modify" are attributes which have to been modified in LDAP entry
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* <br>"info" are values with informational value (e.g. to be used later by pre/postModify actions)
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*/
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public function save_attributes() {
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$return = array();
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// Get easy attributes
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if ($this->getAccountContainer()->dn_orig!=$_SESSION['config']->get_suffix('dhcp')) {
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$return = $this->getAccountContainer()->save_module_attributes($this->attributes, $this->orig);
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}
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// Return attributes
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return $return;
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}
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/**
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* Returns the PDF entries for this module.
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*
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* @return array list of possible PDF entries
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*/
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function get_pdfEntries() {
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$return = array();
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if (is_array($this->ranges) && (sizeof($this->ranges) > 0)) {
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$start = $this->ranges[0]['range_start'];
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$end = $this->ranges[0]['range_end'];
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$return[get_class($this) . '_ranges'] = array('<block><key>' . _('Ranges') . '</key><tr><td align=\"L\">' . $start . " - " . $end . '</td></tr></block>');
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for ($i = 1; $i < sizeof($this->ranges); $i++) {
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$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;
|
|
}
|
|
|
|
}
|
|
|
|
?>
|