From 28cd07d1a75c4e9dcaecac49efee0091f2fc62fa Mon Sep 17 00:00:00 2001
From: A. Täffner <darkalex@firesplash.de>
Date: Thu, 07 Apr 2016 05:30:49 -0400
Subject: [PATCH] Implemented a checkbox "enable DNSSEC" in DNS-Wizard. This Checkbox can be enabled or disabled by template.
---
server/plugins-available/bind_plugin.inc.php | 138 +++++++++++++++++++++++++++++++++++++++------
1 files changed, 118 insertions(+), 20 deletions(-)
diff --git a/server/plugins-available/bind_plugin.inc.php b/server/plugins-available/bind_plugin.inc.php
index 1fceb34..cede1cb 100644
--- a/server/plugins-available/bind_plugin.inc.php
+++ b/server/plugins-available/bind_plugin.inc.php
@@ -76,7 +76,7 @@
}
- //* This creates DNSSEC-Keys but does NOT actually sign the zone.
+ //* This creates DNSSEC-Keys and calls soa_dnssec_update.
function soa_dnssec_create(&$data) {
global $app, $conf;
@@ -86,35 +86,133 @@
//* load the server configuration options
$dns_config = $app->getconf->get_server_config($conf["server_id"], 'dns');
+ //TODO : change this when distribution information has been integrated into server record
+ $filespre = (file_exists('/etc/gentoo-release')) ? 'pri/' : 'pri.';
+
+ $domain = substr($data['new']['origin'], 0, strlen($data['new']['origin'])-1);
+ if (!file_exists($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain)) return false;
+
//* Check Entropy
if (file_get_contents('/proc/sys/kernel/random/entropy_avail') < 400) {
- if($dns_config['disable_bind_log'] === 'y') {
- $app->log('DNSSEC ERROR: We are low on entropy. Not generating new Keys for '.$data['new']['origin'].'. Please consider installing package haveged.', LOGLEVEL_DEBUG);
- } else {
- $app->log('DNSSEC ERROR: We are low on entropy. Not generating new Keys for '.$data['new']['origin'].'. Please consider installing package haveged.', LOGLEVEL_WARN);
- }
+ $app->log('DNSSEC ERROR: We are low on entropy. Not generating new Keys for '.$domain.'. Please consider installing package haveged.', LOGLEVEL_WARN);
return false;
}
//* Verify that we do not already have keys (overwriting-protection)
- //TODO : change this when distribution information has been integrated into server record
- if (file_exists($dns_config['bind_zonefiles_dir'].'/dsset-'.$data['new']['origin'].'.')) {
- return $this->soa_dnssec_update(&$data);
+ if (file_exists($dns_config['bind_zonefiles_dir'].'/dsset-'.$domain.'.')) {
+ return $this->soa_dnssec_update($data);
+ } else if ($data['new']['dnssec_initialized'] == 'Y') { //In case that we generated keys but the dsset-file was not generated
+ $keycount=0;
+ foreach (glob($dns_config['bind_zonefiles_dir'].'/K'.$domain.'*.key') as $keyfile) {
+ $keycount++;
+ }
+ if ($keycount > 0) {
+ $this->soa_dnssec_sign($data);
+ return true;
+ }
}
//Do some magic...
- exec('cd '.escapeshellargs($dns_config['bind_zonefiles_dir']).';'.
- 'dnssec-keygen -a NSEC3RSASHA1 -b 2048 -n ZONE '.escapeshellargs($data['new']['origin']).';'.
- 'dnssec-keygen -f KSK -a NSEC3RSASHA1 -b 4096 -n ZONE '.escapeshellargs($data['new']['origin']));
+ exec('cd '.escapeshellcmd($dns_config['bind_zonefiles_dir']).';'.
+ 'dnssec-keygen -a NSEC3RSASHA1 -b 2048 -n ZONE '.escapeshellcmd($domain).';'.
+ 'dnssec-keygen -f KSK -a NSEC3RSASHA1 -b 4096 -n ZONE '.escapeshellcmd($domain));
+
+ $this->soa_dnssec_sign($data); //Now sign the zone for the first time
+ $data['new']['dnssec_initialized']='Y';
+ }
+
+ function soa_dnssec_sign(&$data) {
+ global $app, $conf;
- $dnssecdata = "DS-Records:\n\r".file_get_contents($dns_config['bind_zonefiles_dir'].'/dsset-'.$data['new']['origin'].'.');
- opendir($dns_config['bind_zonefiles_dir']);
- $dnssecdata .= "\n\r------------------------------------\n\r\n\rDNSKEY-Records:\n\r"
- foreach (glob('K'.$data['new']['origin'].'*.key') as $keyfile) {
- $dnssecdata .= file_get_contents($keyfile)."\n\r\n\r";
+ //* Load libraries
+ $app->uses("getconf,tpl");
+
+ //* load the server configuration options
+ $dns_config = $app->getconf->get_server_config($conf["server_id"], 'dns');
+
+ //TODO : change this when distribution information has been integrated into server record
+ $filespre = (file_exists('/etc/gentoo-release')) ? 'pri/' : 'pri.';
+
+ $domain = substr($data['new']['origin'], 0, strlen($data['new']['origin'])-1);
+ if (!file_exists($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain)) return false;
+
+ $zonefile = file_get_contents($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain);
+ $keycount=0;
+ foreach (glob($dns_config['bind_zonefiles_dir'].'/K'.$domain.'*.key') as $keyfile) {
+ $includeline = '$INCLUDE '.basename($keyfile);
+ if (!preg_match('@'.preg_quote($includeline).'@', $zonefile)) $zonefile .= "\n".$includeline."\n";
+ $keycount++;
+ }
+ if ($keycount != 2) $app->log('DNSSEC Warning: There are more or less than 2 keyfiles for zone '.$domain, LOGLEVEL_WARN);
+ file_put_contents($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain, $zonefile);
+
+ //Sign the zone and set it valid for max. 16 days
+ exec('cd '.escapeshellcmd($dns_config['bind_zonefiles_dir']).';'.
+ 'dnssec-signzone -A -e +1382400 -3 $(head -c 1000 /dev/random | sha1sum | cut -b 1-16) -N increment -o '.escapeshellcmd($domain).' -t '.$filespre.escapeshellcmd($domain));
+
+ //Write Data back ino DB
+ $dnssecdata = "DS-Records:\n".file_get_contents($dns_config['bind_zonefiles_dir'].'/dsset-'.$domain.'.');
+ $dnssecdata .= "\n------------------------------------\n\nDNSKEY-Records:\n";
+ foreach (glob($dns_config['bind_zonefiles_dir'].'/K'.$domain.'*.key') as $keyfile) {
+ $dnssecdata .= file_get_contents($keyfile)."\n\n";
}
- $app->db->datalogUpdate('dns_soa', array('dnssec_info' => $dnssecdata), 'id', $data['new']['id']);
+ $app->db->query('UPDATE dns_soa SET dnssec_info=\''.$dnssecdata.'\', dnssec_initialized=\'Y\', dnssec_last_signed=\''.time().'\' WHERE id='.$data['new']['id']);
+ }
+
+ function soa_dnssec_update(&$data, $new=false) {
+ global $app, $conf;
+
+ //* Load libraries
+ $app->uses("getconf,tpl");
+
+ //* load the server configuration options
+ $dns_config = $app->getconf->get_server_config($conf["server_id"], 'dns');
+
+ //TODO : change this when distribution information has been integrated into server record
+ $filespre = (file_exists('/etc/gentoo-release')) ? 'pri/' : 'pri.';
+
+ $domain = substr($data['new']['origin'], 0, strlen($data['new']['origin'])-1);
+ if (!file_exists($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain)) return false;
+
+ //* Check for available entropy
+ if (file_get_contents('/proc/sys/kernel/random/entropy_avail') < 200) {
+ $app->log('DNSSEC ERROR: We are low on entropy. This could cause server script to fail. Please consider installing package haveged.', LOGLEVEL_ERR);
+ return false;
+ }
+
+ if (!$new && !file_exists($dns_config['bind_zonefiles_dir'].'/dsset-'.$domain.'.')) $this->soa_dnssec_create($data);
+
+ $dbdata = $app->db->queryOneRecord('SELECT id,serial FROM dns_soa WHERE id='.$data['new']['id']);
+ exec('cd '.escapeshellcmd($dns_config['bind_zonefiles_dir']).';'.
+ 'named-checkzone '.escapeshellcmd($domain).' '.escapeshellcmd($dns_config['bind_zonefiles_dir']).'/'.$filespre.escapeshellcmd($domain).' | egrep -ho \'[0-9]{10}\'', $serial, $retState);
+ if ($retState != 0) {
+ $app->log('DNSSEC Error: Error in Zonefile for '.$domain, LOGLEVEL_ERR);
+ return false;
+ }
+
+ $this->soa_dnssec_sign($data);
+ }
+
+ function soa_dnssec_delete(&$data) {
+ global $app, $conf;
+
+ //* Load libraries
+ $app->uses("getconf,tpl");
+
+ //* load the server configuration options
+ $dns_config = $app->getconf->get_server_config($conf["server_id"], 'dns');
+
+ //TODO : change this when distribution information has been integrated into server record
+ $filespre = (file_exists('/etc/gentoo-release')) ? 'pri/' : 'pri.';
+
+ $domain = substr($data['new']['origin'], 0, strlen($data['new']['origin'])-1);
+
+ unlink($dns_config['bind_zonefiles_dir'].'/K'.$domain.'.+*');
+ unlink($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain.'.signed');
+ unlink($dns_config['bind_zonefiles_dir'].'/dsset-'.$domain.'.');
+
+ $app->db->query('UPDATE dns_soa SET dnssec_info=\'\', dnssec_initialized=\'N\' WHERE id='.$data['new']['id']);
}
function soa_insert($event_name, $data) {
@@ -188,7 +286,7 @@
//* DNSSEC-Implementation
if($data['old']['origin'] != $data['new']['origin']) {
- if (@$data['old']['dnssec_initialized'] == 'Y' && strlen(@$data['old']['origin']) > 3) exec('/usr/local/ispconfig/server/scripts/dnssec-delete.sh '.escapeshellcmd($data['old']['origin'])); //delete old keys
+ if (@$data['old']['dnssec_initialized'] == 'Y' && strlen(@$data['old']['origin']) > 3) $this->soa_dnssec_delete($data); //delete old keys
if ($data['new']['dnssec_wanted'] == 'Y') $this->soa_dnssec_create($data);
}
else if ($data['new']['dnssec_wanted'] == 'Y' && $data['old']['dnssec_initialized'] == 'N') $this->soa_dnssec_create($data);
@@ -201,7 +299,7 @@
$filename = $dns_config['bind_zonefiles_dir'].'/pri.'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
}
if(is_file($filename.'.signed')) unlink($filename.'.signed');
- } else if ($data['new']['dnssec_wanted'] == 'Y') exec('/usr/local/ispconfig/server/scripts/dnssec-update.sh '.escapeshellcmd($data['new']['origin']));
+ } else if ($data['new']['dnssec_wanted'] == 'Y') $this->soa_dnssec_update($data);
// END DNSSEC
//* rebuild the named.conf file if the origin has changed or when the origin is inserted.
--
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