478 lines
15 KiB
PHP
478 lines
15 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.sourceforge.net/projects/lam)
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Copyright (C) 2008 Thomas Manninger
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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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*/
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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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// Are the ranges ok???
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public $ranges_ok;
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// For check, if IPs overlaped.
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public $overlaped;
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public function get_metaData() {
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$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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$return["is_base"] = false;
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// RDN attribute
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$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();
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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();
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return $return;
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}
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public function load_Messages() {
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$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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*
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* Checked, if it's a valid range
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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 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]!=$ex_second[0])
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return false;
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if ($ex_first[1]!=$ex_second[1])
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return false;
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if ($ex_first[2]!=$ex_second[2])
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return false;
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if ($ex_first[3]>$ex_second[3]) {
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return false;
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}
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return true;
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}
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/**
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*
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* Check if the range and subnet are valid.
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*
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* @param IP
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* @param Subnet
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*
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* @return true if the range and subnet valid, else false!
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*
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**/
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public function check_subnet_range($ip,$subnet) {
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// Check if the range was valid with the subnet:
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$ex = explode(".", $ip);
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$ex_subnet = explode(".", $subnet);
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if ($ex[0]==$ex_subnet[0] && $ex[1]==$ex_subnet[1] && $ex[2]==$ex_subnet[2]) {
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return true;
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}
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else
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{
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return false;
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}
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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, $this->overlaped)) {
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return false;
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}
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else
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{
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$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 ($_SESSION['account']->getAccountModule('dhcp_settings')->dn!=$_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($attr);
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// Load DHCP Options:
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if ($_SESSION['account']->getAccountModule('dhcp_settings')->dn!=$_SESSION['config']->get_suffix('dhcp')) {
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$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(".", $_SESSION['account']->getAccountModule('dhcp_settings')->attributes['cn'][0]);
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$range_edit = false; // Range were edit?
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foreach ($this->ranges AS $id=>$arr) {
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if (!empty($this->ranges[$id]['range_start']) && !$this->check_subnet_range($this->ranges[$id]['range_start'],$_SESSION['account']->getAccountModule('dhcp_settings')->$this->attributes['cn'][0])) {
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// Range anpassen:
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$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']) && !$this->check_subnet_range($this->ranges[$id]['range_start'],$_SESSION['account']->getAccountModule('dhcp_settings')->$this->attributes['cn'][0])) {
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// Range anpassen:
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$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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$droped = false; // Was a Range droped???
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if ($_SESSION['account']->getAccountModule('dhcp_settings')->dn!=$_SESSION['config']->get_suffix('dhcp')) {
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if ($_SESSION['account']->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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{
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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 (!$this->check_subnet_range($_POST['range_start_'.$id],$_SESSION['account']->getAccountModule('dhcp_settings')->attributes['cn'][0])) {
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$was_a_error = true;
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}
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// Check if Subnet and range last are valid:
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if (!$this->check_subnet_range($_POST['range_last_'.$id],$_SESSION['account']->getAccountModule('dhcp_settings')->$this->attributes['cn'][0])) {
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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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$this->ranges_ok = true;
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}
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else
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{
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unset($this->attributes['dhcpRange'][$id]);
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$this->ranges_ok = false;
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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 $errors;
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}
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/* This function will create the html-page
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* to show a page with all attributes.
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* It will output a complete html-table
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*/
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public function display_html_attributes() {
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// user name if no posixAccount
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$modules = $_SESSION['config']->get_AccountModules($this->get_scope());
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if ($_SESSION['account']->getAccountModule('dhcp_settings')->attributes['cn'][0]=="") {
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echo "<b>" . _("Please fill out the DHCP settings first.") . "</b>";
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}
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else
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{
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// If $ranges is not a array, then create an:
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if (!is_array($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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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 && !$this->check_subnet_range($this->ranges[$id]['range_start'],$_SESSION['account']->getAccountModule('dhcp_settings')->attributes['cn'][0])) {
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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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$error = "";
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}
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$return[] = array(0 => array('kind' => 'text', 'text' => _('Range from') . ":* "),
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1 => array('kind' => 'input', 'name' => 'range_start_'.$id.'', 'value' => $this->ranges[$id]['range_start']),
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2 => array('kind' => 'help', 'value' => 'range_from', 'scope' => 'user'),
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3 => array('kind' => 'text', 'text'=>$error));
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// Range end
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if ($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 && !$this->check_subnet_range($this->ranges[$id]['range_end'],$_SESSION['account']->getAccountModule('dhcp_settings')->attributes['cn'][0])) {
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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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$return[] = array(0 => array('kind' => 'text', 'text' => _('Range to') . ":* "),
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1 => array('kind' => 'input', 'name' => 'range_end_'.$id.'', 'value' => $this->ranges[$id]['range_end']),
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2 => array('kind' => 'help', 'value' => 'range_to', 'scope' => 'user'),
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3 => array('kind' => 'text', 'text'=>$error));
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// Drop range:
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$return[] = array(
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0 => array('kind' => 'text', 'text' => _('Delete range') . ':'),
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1 => array('kind' => 'input', 'name' => 'drop_range_'.$id, 'type' => 'submit', 'value' => _('Delete range')),
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2 => array('kind' => 'help', 'value' => 'drop_range'));
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// Space Line
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$return[] = array(0 => array('kind' => 'text', 'text' => '<br />'));
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}
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// Range hinzufügen:
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$return[] = array(
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0 => array('kind' => 'text', 'text' => _('New range') . ':'),
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1 => array('kind' => 'input', 'name' => 'add_range', 'type' => 'submit', 'value' => _('New range')),
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2 => array('kind' => 'help', 'value' => 'add_range'));
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}
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return $return;
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}
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/* This function returns an array with 4 entries:
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* array( DN1 ('add' => array($attr), 'remove' => array($attr), 'modify' => array($attr), 'lamdaemon' => array(cmds)), DN2 .... )
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* DN is the DN to change. It may be possible to change several DNs,
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* e.g. create a new user and add him to some groups via attribute memberUid
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* add are attributes which have to be added to ldap entry
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* remove are attributes which have to be removed from ldap entry
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* lamdaemon are lamdaemon commands to modify homedir, quotas, ...
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*/
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public function save_attributes() {
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$return = array();
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// Get easy attributes
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if ($_SESSION['account']->getAccountModule('dhcp_settings')->dn!=$_SESSION['config']->get_suffix('dhcp')) {
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$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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?>
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