LDAPAccountManager/lam/lib/modules/ddns.inc

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<?php
/*
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This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
Copyright (C) 2008 Thomas Manninger
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2008 - 2020 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 {
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/** standard DDNS settings */
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public $ddns = array();
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/**
* Returns true if this module can manage accounts of the current type, otherwise false.
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*
* @return boolean true if module fits
*/
public function can_manage() {
return in_array($this->get_scope(), array('dhcp'));
}
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/**
* Returns meta data that is interpreted by parent class.
*
* @return array array with meta data
*/
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public function get_metaData() {
$return = array();
// alias name
$return["alias"] = _("DDNS");
// this is a base module
$return["is_base"] = false;
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// icon
$return['icon'] = 'dhcpBig.png';
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// 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(
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'active' => array(
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"Headline" => _("Activate DynDNS"),
"Text" => _("Should DDNS (Dynamic DNS) be activated?")
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),
'fixed_ips' => array(
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"Headline" => _("Fix IP addresses"),
"Text" => _("Should fix IP addresses be added to the DNS server?")
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),
'client_insert' => array(
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"Headline" => _("Disable client updates"),
"Text" => _("Disables the client to update DNS entries.")
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),
'keypath' => array(
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"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(
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"Headline" => _("IP address of the DNS server"),
"Text" => _("Please enter the IP address of your DNS server.")
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),
'zone' => array(
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"Headline" => _("Zone name"),
"Text" => _("Zone name for the DNS server (e.g. company.local).")
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),
'zone_reverse' => array(
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"Headline" => _("Reverse zone name"),
"Text" => ("Name of the reverse zone of the DNS server (e.g. 0.168.192.in-addr.arpa).")
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),
);
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// available PDF fields
$return['PDF_fields'] = array(
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'DNSserver' => _('IP address of the DNS server'),
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'zone' => _('Zone name'),
'reverseZone' => _('Reverse zone name'),
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);
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// upload fields
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if (isLoggedIn() && $this->check_if_ddns_is_enable()) {
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$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',
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'description' => _('Zone name'),
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'help' => 'zone',
'example' => 'company.local',
'required' => true
),
array(
'name' => 'ddns_reverseZone',
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'description' => _('Reverse zone name'),
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'help' => 'zone_reverse',
'example' => '0.168.192.in-addr.arpa',
'required' => true
),
);
}
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return $return;
}
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/**
* 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.');
$this->messages['zone_reverse'][0] = array('ERROR', 'Please enter the reverse zone.');
}
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/**
* This functions returns true if all needed settings are done.
*
* @return boolean true if LDAP operation can be done
*/
public function module_complete() {
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$this->attributes = &$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes;
$this->orig = &$this->getAccountContainer()->getAccountModule('dhcp_settings')->orig;
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if ($this->isRootNode()) {
// check if DHCP main settings and valid DHCP entry
if (!in_array_ignore_case('dhcpService', $this->attributes['objectClass']) && !in_array_ignore_case('dhcpServer', $this->attributes['objectClass'])) {
return false;
}
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}
else {
if (!$this->check_if_ddns_is_enable()) {
return true;
}
// Account settings
$ip = $this->getDNSServer();
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if (!empty($ip) && !check_ip($ip)) return false;
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$zones = $this->getZoneNames();
if (sizeof($zones) < 2) {
return false;
}
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}
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return true;
}
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/**
* Returns if the current DN is the root entry.
*
* @return bool is root
*/
private function isRootNode() {
$rootSuffix = $this->getAccountContainer()->get_type()->getSuffix();
return $this->getAccountContainer()->dn_orig == $rootSuffix;
}
/**
* Returns a list of modifications which have to be made to the LDAP account.
*
* @return array list of modifications
* <br>This function returns an array with 3 entries:
* <br>array( DN1 ('add' => array($attr), 'remove' => array($attr), 'modify' => array($attr)), DN2 .... )
* <br>DN is the DN to change. It may be possible to change several DNs (e.g. create a new user and add him to some groups via attribute memberUid)
* <br>"add" are attributes which have to be added to LDAP entry
* <br>"remove" are attributes which have to be removed from LDAP entry
* <br>"modify" are attributes which have to been modified in LDAP entry
* <br>"info" are values with informational value (e.g. to be used later by pre/postModify actions)
*/
public function save_attributes() {
// done by dhcp_server object
}
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/**
* This function check if ddns is enable.
*/
private function check_if_ddns_is_enable() {
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if ($this->getAccountContainer() == null) {
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return false;
}
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$type = $this->getAccountContainer()->get_type();
if ($type == null) {
return false;
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}
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$suffix = $type->getSuffix();
$results = searchLDAP($suffix, "dhcpStatements=ddns-update-style interim", array('dn'));
return (!empty($results));
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}
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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() {
$errors = array();
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// Main Settings and Account have to different processes.
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if ($this->isRootNode()) {
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// main settings:
$errors = $this->process_attributes_mainSettings();
}
else {
// account
if (!$this->check_if_ddns_is_enable()) {
return array();
}
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$errors = $this->process_attributes_account();
}
return $errors;
}
/**
* Process for mainsettings
*/
public function process_attributes_mainSettings() {
if (!in_array_ignore_case('dhcpService', $this->attributes['objectClass']) && !in_array_ignore_case('dhcpServer', $this->attributes['objectClass'])) {
return array();
}
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$errors = array();
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// Is DDNS active?
$active = $_POST['active'];
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// Insert fixed IPs into DNS?
$insert_fixed = $_POST['insert_fixed'];
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// Client can contribute which is registered into DNS
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$client_insert = $_POST['client_insert'];
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// The path to the key:
$key_path = trim($_POST['key_path']);
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$this->setDynDNSActivated(($active == 'on'));
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$this->setFixIPs(($insert_fixed == 'on'));
$this->setIgnoreClientUpdates(($client_insert == 'on'));
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$this->setUpdateKey($key_path);
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if (!empty($key_path) && (str_replace("\"","",$_POST['key_path']) != $key_path)) {
$errors[] = $this->messages['key_path'][1];
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}
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return $errors;
}
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/**
* Process for account
*/
public function process_attributes_account() {
$errors = array();
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$ip = trim($_POST['ip']);
$zone = trim($_POST['zone']);
$zone_reverse = trim($_POST['zone_reverse']);
// ip correct???
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if (!empty($ip) && !check_ip($ip)) {
$errors[] = $this->messages['ip'][0];
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}
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for ($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)) {
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if (!empty($ip)) {
$this->attributes['dhcpStatements'][] = "zone {$zone}. { primary {$ip}; key DHCP_UPDATER; }";
}
else {
$this->attributes['dhcpStatements'][] = "zone {$zone}. { key DHCP_UPDATER; }";
}
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}
else {
if (!empty($ip)) {
$errors[] = $this->messages['zone'][0];
}
}
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// Zone reverse inserted?
if (!empty($zone_reverse)) {
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if (!empty($ip)) {
$this->attributes['dhcpStatements'][] = "zone {$zone_reverse}. { primary {$ip}; key DHCP_UPDATER; }";
}
else {
$this->attributes['dhcpStatements'][] = "zone {$zone_reverse}. { key DHCP_UPDATER; }";
}
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}
else {
if (!empty($ip)) {
$errors[] = $this->messages['zone_reverse'][0];
}
}
return $errors;
}
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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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public function display_html_attributes() {
$this->attributes = &$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes;
$this->orig = &$this->getAccountContainer()->getAccountModule('dhcp_settings')->orig;
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$return = new htmlResponsiveRow();
// check if DHCP main settings and valid DHCP entry
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if ($this->isRootNode()) {
if (!in_array_ignore_case('dhcpService', $this->attributes['objectClass']) && !in_array_ignore_case('dhcpServer', $this->attributes['objectClass'])) {
$return->addElement(new htmlStatusMessage('ERROR', _('Please set your LDAP suffix to an LDAP entry with object class "dhcpService" or "dhcpServer".')));
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return $return;
}
// DHCP main settings
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$return->add(new htmlResponsiveInputCheckbox('active', $this->isDynDNSActivated(), _('Activate DynDNS'), 'active'), 12);
$return->add(new htmlResponsiveInputCheckbox('insert_fixed', $this->addFixIPs(), _('Add fix IP addresses to DNS'), 'fixed_ips'), 12);
$return->add(new htmlResponsiveInputCheckbox('client_insert', $this->isIgnoreClientUpdates(), _('Disable client updates'), 'client_insert'), 12);
$keyInput = new htmlResponsiveInputField(_('Path to key for DNS updates'), 'key_path', $this->getUpdateKey(), 'keypath');
$return->add($keyInput, 12);
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}
else {
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// Account edit
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if (!$this->check_if_ddns_is_enable()) {
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$return->add(new htmlOutputText(_("DDNS is not activated. You can activate it in the DHCP settings (DDNS).")), 12);
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}
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else {
// DNS server
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$serverInput = new htmlResponsiveInputField(_('IP address of the DNS server'), 'ip', $this->getDNSServer(), 'dns');
$return->add($serverInput, 12);
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$zones = $this->getZoneNames();
$zone = '';
$revzone = '';
if (isset($zones[0])) {
$zone = $zones[0];
}
if (isset($zones[1])) {
$revzone = $zones[1];
}
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// zone name
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$zoneInput = new htmlResponsiveInputField(_('Zone name'), 'zone', $zone, 'zone');
$return->add($zoneInput, 12);
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// reverse zone name
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$revZoneInput = new htmlResponsiveInputField(_('Reverse zone name'), 'zone_reverse', $revzone, 'zone_reverse');
$return->add($revZoneInput, 12);
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}
}
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return $return;
}
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/**
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* {@inheritDoc}
* @see baseModule::get_pdfEntries()
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*/
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public function get_pdfEntries($pdfKeys, $typeId) {
// attributes are taken from DHCP server object
$this->attributes = &$this->getAccountContainer()->getAccountModule('dhcp_settings')->attributes;
$this->orig = &$this->getAccountContainer()->getAccountModule('dhcp_settings')->orig;
$zones = $this->getZoneNames();
$zone = '';
$revzone = '';
if (isset($zones[0])) {
$zone = $zones[0];
}
if (isset($zones[1])) {
$revzone = $zones[1];
}
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$result = array();
$this->addPDFKeyValue($result, 'DNSserver', _('IP address of the DNS server'), $this->getDNSServer());
$this->addPDFKeyValue($result, 'zone', _('Zone name'), $zone);
$this->addPDFKeyValue($result, 'reverseZone', _('Reverse zone name'), $revzone);
return $result;
}
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/**
* Returns the IP of the DNS server.
*
* @return String IP address
*/
private function getDNSServer() {
$return = null;
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if (isset($this->attributes['dhcpStatements'][0])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 5) == 'zone ') {
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if (strpos($this->attributes['dhcpStatements'][$i], ' primary ') === false) {
continue;
}
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$parts = explode(". { primary ", $this->attributes['dhcpStatements'][$i]);
$temp = array_pop($parts);
$temp = explode(";", $temp);
return array_shift($temp);
}
}
}
return $return;
}
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/**
* Returns the zone names.
*
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* @return array zone names array(zone, reverse zone)
*/
private function getZoneNames() {
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$return = array();
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$zone = '';
$revZone = '';
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
if (substr($this->attributes['dhcpStatements'][$i], 0, 5) == 'zone ') {
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$parts = explode(" ",substr($this->attributes['dhcpStatements'][$i],5));
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$value = substr(array_shift($parts),0,-1);
if (strpos($value, 'in-addr.arpa') === false) {
$zone = $value;
}
else {
$revZone = $value;
}
}
}
}
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$return[0] = $zone;
$return[1] = $revZone;
return $return;
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}
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/**
* Returns if DDNS is activated.
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*
* @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.
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*
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* @param boolean $activated activated
*/
private function setDynDNSActivated($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';
}
}
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/**
* Returns if fixed IPs are added to DDNS.
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*
* @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;
}
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/**
* Sets if client updates are ignored.
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*
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* @param boolean $add add fixed IPs
*/
private function setFixIPs($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';
}
}
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/**
* Returns if client updates are ignored.
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*
* @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++) {
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if (preg_replace('/[ ]+/', ' ', $this->attributes['dhcpStatements'][$i]) == 'ignore client-updates') {
$return = true;
break;
}
}
}
return $return;
}
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/**
* Sets if client updates are ignored.
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*
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* @param boolean $ignore ignore client updates
*/
private function setIgnoreClientUpdates($ignore) {
if (is_array($this->attributes['dhcpStatements'])) {
for ($i = 0; $i < sizeof($this->attributes['dhcpStatements']); $i++) {
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if (preg_replace('/[ ]+/', ' ', $this->attributes['dhcpStatements'][$i]) == 'ignore client-updates') {
if ($ignore) {
return; // option already set, no change
}
unset($this->attributes['dhcpStatements'][$i]);
$this->attributes['dhcpStatements'] = array_values($this->attributes['dhcpStatements']);
}
}
}
if ($ignore) {
$this->attributes['dhcpStatements'][] = 'ignore client-updates';
}
}
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/**
* Returns the key for DNS updates.
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*
* @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;
}
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/**
* Sets the key for DNS updates.
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*
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* @param String $key key
*/
private function setUpdateKey($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.
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*
* 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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/**
* {@inheritDoc}
* @see baseModule::build_uploadAccounts()
*/
function build_uploadAccounts($rawAccounts, $ids, &$partialAccounts, $selectedModules, &$type) {
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$messages = array();
if (!$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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?>