LDAPAccountManager/lam/lib/modules/ddns.inc

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<?php
/*
$Id$
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This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
Copyright (C) 2008 Thomas Manninger
2008 - 2009 Roland Gruber
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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 DDNS entries.
*
* @package modules
*
* @author Thomas Manninger
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* @author Roland Gruber
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*/
/**
* Manages DDNS entries.
*
* @package modules
*/
class ddns extends baseModule {
// Standard DDNS Settings
public $ddns = array();
/**
* Initializes the module after it became part of an {@link accountContainer}
*
* Calling this method requires the existence of an enclosing {@link accountContainer}.
*
* @param string $base the name of the {@link accountContainer} object ($_SESSION[$base])
*/
public function init($base) {
parent::init($base);
$this->attributes = &$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes;
$this->orig = &$this->getAccountContainer()->getAccountModule('dhcp_settings')->orig;
}
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public function get_metaData() {
$return = array();
// manages host accounts
$return["account_types"] = array("dhcp");
// alias name
$return["alias"] = _("DDNS");
// this is a base module
$return["is_base"] = false;
// RDN attribute
$return["RDN"] = array("cn" => "high");
// LDAP filter
$return["ldap_filter"] = array();
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// module dependencies
$return['dependencies'] = array('depends' => array('dhcp_settings'), 'conflicts' => array());
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// managed object classes
$return['objectClasses'] = array();
// managed attributes
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$return['attributes'] = array('dhcpOption', 'dhcpStatements');
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// help Entries
$return['help'] = array(
'active' => array(
"Headline" => _("Activate DynDNS"),
"Text" => _("Should DDNS (Dynamic DNS) be activated?")
) , 'fixed_ips' => array(
"Headline" => _("Fix IP addresses"),
"Text" => _("Should fix IP addresses be added to the DNS server?")
) , 'client_insert' => array(
"Headline" => _("Disable client updates"),
"Text" => _("Disables the client to update DNS entries.")
) , 'keypath' => array(
"Headline" => _("Path to key for DNS updates"),
"Text" => _("The key enables the DHCP server to perform DNS updates." .
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" " . "The key is generated with \"genDDNSkey\".")
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) , 'dns' => array(
"Headline" => _("IP address of the DNS server"),
"Text" => _("Please enter the IP address of your DNS server.")
) , 'zone' => array(
"Headline" => _("Zone names"),
"Text" => _("Zone names for the DNS server (e.g. company.local).")
) , 'zone_reverse' => array(
"Headline" => _("Reverse zone names"),
"Text" => ("Name of the reverse zones of the DNS server (e.g. 0.168.192.in-addr.arpa).")
) ,);
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// available PDF fields
$return['PDF_fields'] = array(
'DNSserver',
'zone',
'reverseZone',
);
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// upload fields
if (isset($_SESSION['loggedIn']) && $this->check_if_ddns_is_enable()) {
$return['upload_columns'] = array(
array(
'name' => 'ddns_DNSserver',
'description' => _('IP address of the DNS server'),
'help' => 'dns',
'example' => '123.123.123.123',
'required' => true
),
array(
'name' => 'ddns_zone',
'description' => _('Zone names'),
'help' => 'zone',
'example' => 'company.local',
'required' => true
),
array(
'name' => 'ddns_reverseZone',
'description' => _('Reverse zone names'),
'help' => 'zone_reverse',
'example' => '0.168.192.in-addr.arpa',
'required' => true
),
);
}
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return $return;
}
/**
* This function fills the message array.
*/
public function load_Messages() {
$this->messages['key_path'][0] = array('ERROR', 'Please enter the path to the key.', '');
$this->messages['key_path'][1] = array('ERROR', 'The key path contains invalid characters.', '');
$this->messages['ip'][0] = array('ERROR', 'The IP address of the DNS server is invalid.');
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$this->messages['ip'][1] = array('ERROR', _('Account %s:') . ' ddns_DNSserver', 'The IP address of the DNS server is invalid.');
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$this->messages['zone'][0] = array('ERROR', 'Please enter a zone name.');
$this->messages['zone_reverse'][0] = array('ERROR', 'Please enter the reverse zone.');
}
/**
* This functions returns true if all needed settings are done.
*
* @return boolean true if LDAP operation can be done
*/
public function module_complete() {
if ($this->getAccountContainer()->dn_orig==$_SESSION['config']->get_suffix('dhcp')) {
// check if DHCP main settings and valid DHCP entry
if (!in_array_ignore_case('dhcpServer', $this->attributes['objectClass'])) {
return false;
}
//Main settings
if ($this->isDynDNSActivated() && (($this->getUpdateKey() == null) || ($this->getUpdateKey() == ''))) {
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return false;
}
}
else {
if (!$this->check_if_ddns_is_enable()) {
return true;
}
// Account settings
$ip = $this->getDNSServer();
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if (!empty($ip) && !check_ip($ip)) return false;
$zones = $this->getZoneNames();
if (sizeof($zones) < 2) {
return false;
}
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}
return true;
}
/**
* This function check if ddns is enable.
*/
private function check_if_ddns_is_enable() {
$ldap = $_SESSION['ldap']->server();
$dn = $_SESSION['config']->get_suffix('dhcp');
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$search = @ldap_search($ldap,$dn,"dhcpStatements=ddns-update-style interim", array(), 0, 0, 0, LDAP_DEREF_NEVER);
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if ($search) {
$info = @ldap_get_entries($ldap,$search);
if ($info && ($info['count'] > 0)) {
return true;
}
else {
return false;
}
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}
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return false;
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}
/**
* 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() {
$errors = array();
// Main Settings and Account have to different processes.
if ($this->getAccountContainer()->dn_orig==$_SESSION['config']->get_suffix('dhcp')) {
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// main settings:
$errors = $this->process_attributes_mainSettings();
}
else {
// account
if (!$this->check_if_ddns_is_enable()) {
return array();
}
$errors = $this->process_attributes_account();
}
return $errors;
}
/**
* Process for mainsettings
*/
public function process_attributes_mainSettings() {
if (!in_array_ignore_case('dhcpServer', $this->attributes['objectClass'])) {
return array();
}
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$errors = array();
// Is DDNS active?
$active = $_POST['active'];
// Insert fixed IPs into DNS?
$insert_fixed = $_POST['insert_fixed'];
// Client can contribute which is registered into DNS
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$client_insert = $_POST['client_insert'];
// The path to the key:
$key_path = trim($_POST['key_path']);
$this->setDynDNSActivated(($active == 'on'));
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$this->setFixIPs(($insert_fixed == 'on'));
$this->setIgnoreClientUpdates(($client_insert == 'on'));
$this->setUpdateKey($key_path);
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// key path must be insert, when ddns is active
if ($active == 'on' && empty($key_path)) {
$errors[] = $this->messages['key_path'][0];
}
elseif (!empty($key_path)) {
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if (str_replace("\"","",$_POST['key_path']) != $key_path) {
$errors[] = $this->messages['key_path'][1];
}
}
return $errors;
}
/**
* Process for account
*/
public function process_attributes_account() {
$errors = array();
$ip = trim($_POST['ip']);
$zone = trim($_POST['zone']);
$zone_reverse = trim($_POST['zone_reverse']);
// ip correct???
if (!empty($ip)) {
if (!check_ip($ip)) {
$errors[] = $this->messages['ip'][0];
}
}
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 5) == 'zone ') {
unset($this->attributes['dhcpStatements'][$i]);
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$this->attributes['dhcpStatements'] = array_values($this->attributes['dhcpStatements']);
$i--;
}
}
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// Zone inserted?
if (!empty($zone)) {
$this->attributes['dhcpStatements'][] = "zone {$zone}. { primary {$ip}; key DHCP_UPDATER; }";
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}
else {
if (!empty($ip)) {
$errors[] = $this->messages['zone'][0];
}
}
// Zone reverse inserted?
if (!empty($zone_reverse)) {
$this->attributes['dhcpStatements'][] = "zone {$zone_reverse}. { primary {$ip}; key DHCP_UPDATER; }";
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}
else {
if (!empty($ip)) {
$errors[] = $this->messages['zone_reverse'][0];
}
}
return $errors;
}
/**
* Returns the HTML meta data for the main account page.
*
* @return array HTML meta data
*/
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public function display_html_attributes() {
// check if DHCP main settings and valid DHCP entry
if ($_SESSION['config']->get_suffix('dhcp') == $this->getAccountContainer()->dn_orig) {
if (!in_array_ignore_case('dhcpServer', $this->attributes['objectClass'])) {
StatusMessage("ERROR", _('Please set your LDAP suffix to an LDAP entry with object class "dhcpServer".'));
return array();
}
}
if ($this->getAccountContainer()->dn_orig==$_SESSION['config']->get_suffix('dhcp')) {
// DHCP main settings
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$return[] = array(
array('kind' => 'text', 'text' => _('Activate DynDNS') . ":* "),
array('kind' => 'input', 'type' => 'checkbox', 'name' => 'active', 'checked' => $this->isDynDNSActivated()),
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array('kind' => 'help', 'value' => 'active', 'scope' => 'user'));
$return[] = array(
array('kind' => 'text', 'text' => _('Add fix IP addresses to DNS') . ":* "),
array('kind' => 'input', 'type' => 'checkbox', 'name' => 'insert_fixed', 'checked' => $this->addFixIPs()),
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array('kind' => 'help', 'value' => 'fixed_ips', 'scope' => 'user'));
$return[] = array(
array('kind' => 'text', 'text' => _('Disable client updates') . ":* "),
array('kind' => 'input', 'type' => 'checkbox', 'name' => 'client_insert', 'checked' => $this->isIgnoreClientUpdates()),
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array('kind' => 'help', 'value' => 'client_insert', 'scope' => 'user'));
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$return[] = array(
array('kind' => 'text', 'text' => _('Path to key for DNS updates') . ":* "),
array('kind' => 'input', 'type' => 'text', 'name' => 'key_path', 'value' => $this->getUpdateKey()),
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array('kind' => 'help', 'value' => 'keypath', 'scope' => 'user'));
}
else {
// Account edit
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if (!$this->check_if_ddns_is_enable()) {
echo _("DDNS ist not activated. You can activate it in the DHCP settings (DDNS).") . "<br/><br/>";
}
else {
$return[] = array(
array('kind' => 'text', 'text' => _('IP address of the DNS server') . ":* "),
array('kind' => 'input', 'type' => 'text', 'name' => 'ip', 'value' => $this->getDNSServer()),
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array('kind' => 'help', 'value' => 'dns', 'scope' => 'user'));
$zones = $this->getZoneNames();
$zone = '';
$revzone = '';
if (isset($zones[0])) {
$zone = $zones[0];
}
if (isset($zones[1])) {
$revzone = $zones[1];
}
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$return[] = array(
array('kind' => 'text', 'text' => _('Zone names') . ":* "),
array('kind' => 'input', 'type' => 'text', 'name' => 'zone', 'value' => $zone),
array('kind' => 'help', 'value' => 'zone', 'scope' => 'user'));
$return[] = array(
array('kind' => 'text', 'text' => _('Reverse zone names') . ":* "),
array('kind' => 'input', 'type' => 'text', 'name' => 'zone_reverse', 'value' => $revzone),
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array('kind' => 'help', 'value' => 'zone_reverse', 'scope' => 'user'));
}
}
echo _("Attention: The DHCP service needs to be restarted after changes in DDNS.") . "<br />";
return $return;
}
/**
* Returns the PDF entries for this module.
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*
* @return array list of possible PDF entries
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*/
public function get_pdfEntries() {
$zones = $this->getZoneNames();
$zone = '';
$revzone = '';
if (isset($zones[0])) {
$zone = $zones[0];
}
if (isset($zones[1])) {
$revzone = $zones[1];
}
return array(
get_class($this) . '_DNSserver' => array('<block><key>' . _('IP address of the DNS server') . '</key><value>' . $this->getDNSServer() . '</value></block>'),
get_class($this) . '_zone' => array('<block><key>' . _('Zone names') . '</key><value>' . $zone . '</value></block>'),
get_class($this) . '_reverseZone' => array('<block><key>' . _('Reverse zone names') . '</key><value>' . $revzone . '</value></block>'),
);
}
/**
* Returns the IP of the DNS server.
*
* @return String IP address
*/
private function getDNSServer() {
$return = null;
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 5) == 'zone ') {
return array_shift(explode(";",array_pop(explode(". { primary ", $this->attributes['dhcpStatements'][$i]))));
}
}
}
return $return;
}
/**
* Returns the zone names.
*
* @return array zone names
*/
private function getZoneNames() {
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$return = array();
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 5) == 'zone ') {
$return[] = substr(array_shift(explode(" ",substr($this->attributes['dhcpStatements'][$i],5))),0,-1);
}
}
}
return $return;
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}
/**
* Returns if DDNS is activated.
*
* @return boolean activated
*/
private function isDynDNSActivated() {
$return = false;
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if ($this->attributes['dhcpStatements'][$i] == 'ddns-update-style interim') {
$return = true;
break;
}
}
}
return $return;
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}
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/**
* Sets if DDNS is activated.
*
* $activated boolean activated
*/
private function setDynDNSActivated($activated) {
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 18) == 'ddns-update-style ') {
unset($this->attributes['dhcpStatements'][$i]);
$this->attributes['dhcpStatements'] = array_values($this->attributes['dhcpStatements']);
}
}
}
if ($activated) {
$this->attributes['dhcpStatements'][] = 'ddns-update-style interim';
}
else {
$this->attributes['dhcpStatements'][] = 'ddns-update-style none';
}
}
/**
* Returns if fixed IPs are added to DDNS.
*
* @return boolean add fixed IPs
*/
private function addFixIPs() {
$return = false;
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if ($this->attributes['dhcpStatements'][$i] == 'update-static-leases true') {
$return = true;
break;
}
}
}
return $return;
}
/**
* Sets if client updates are ignored.
*
* $add boolean add fixed IPs
*/
private function setFixIPs($add) {
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 21) == 'update-static-leases ') {
unset($this->attributes['dhcpStatements'][$i]);
$this->attributes['dhcpStatements'] = array_values($this->attributes['dhcpStatements']);
}
}
}
if ($add) {
$this->attributes['dhcpStatements'][] = 'update-static-leases true';
}
}
/**
* Returns if client updates are ignored.
*
* @return boolean ignore client updates
*/
private function isIgnoreClientUpdates() {
$return = false;
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if ($this->attributes['dhcpStatements'][$i] == 'ignore client-updates') {
$return = true;
break;
}
}
}
return $return;
}
/**
* Sets if client updates are ignored.
*
* $ignore boolean ignore client updates
*/
private function setIgnoreClientUpdates($ignore) {
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if ($this->attributes['dhcpStatements'][$i] == 'ignore client-updates') {
unset($this->attributes['dhcpStatements'][$i]);
$this->attributes['dhcpStatements'] = array_values($this->attributes['dhcpStatements']);
}
}
}
if ($ignore) {
$this->attributes['dhcpStatements'][] = 'ignore client-updates';
}
}
/**
* Returns the key for DNS updates.
*
* @return String key
*/
private function getUpdateKey() {
$return = null;
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 8) == 'include ') {
$return = substr($this->attributes['dhcpStatements'][$i],9, strlen($this->attributes['dhcpStatements'][$i]) - 10);
break;
}
}
}
return $return;
}
/**
* Sets the key for DNS updates.
*
* $key String key
*/
private function setUpdateKey($key) {
if (!is_array($this->attributes['dhcpStatements'])) {
$this->attributes['dhcpStatements'] = array();
}
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 8) == 'include ') {
unset($this->attributes['dhcpStatements'][$i]);
$this->attributes['dhcpStatements'] = array_values($this->attributes['dhcpStatements']);
}
}
if (($key != null) && ($key != '')) {
$this->attributes['dhcpStatements'][] = 'include "' . $key . '"';
}
}
/**
* This function loads the LDAP attributes when an account should be loaded.
*
* Calling this method requires the existence of an enclosing {@link accountContainer}.<br>
* <br>
* By default this method loads the object classes and accounts which are specified in {@link getManagedObjectClasses()}
* and {@link getManagedAttributes()}.
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*
* @param array $attributes array like the array returned by get_ldap_attributes(dn of account) but without count indices
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*/
public function load_attributes($attributes) {
// load nothing, attributes are saved in "dhcp_settings" module
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}
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/**
* In this function the LDAP account is built up.
*
* @param array $rawAccounts list of hash arrays (name => value) from user input
* @param array $partialAccounts list of hash arrays (name => value) which are later added to LDAP
* @param array $ids list of IDs for column position (e.g. "posixAccount_uid" => 5)
* @return array list of error messages if any
*/
function build_uploadAccounts($rawAccounts, $ids, &$partialAccounts) {
$messages = array();
if (!$this->check_if_ddns_is_enable()) {
return $messages;
}
for ($i = 0; $i < sizeof($rawAccounts); $i++) {
// principal name
if (!check_ip($rawAccounts[$i][$ids['ddns_DNSserver']])) {
$error = $this->messages['ip'][1];
array_push($error, $i);
$messages[] = $error;
}
else {
$partialAccounts[$i]['dhcpStatements'][] = "zone {$rawAccounts[$i][$ids['ddns_zone']]}. { primary {$rawAccounts[$i][$ids['ddns_DNSserver']]}; key DHCP_UPDATER; }";
$partialAccounts[$i]['dhcpStatements'][] = "zone {$rawAccounts[$i][$ids['ddns_reverseZone']]}. { primary {$rawAccounts[$i][$ids['ddns_DNSserver']]}; key DHCP_UPDATER; }";
}
}
return $messages;
}
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}
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?>