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<?php
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/*
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* unbound.inc
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*
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* part of pfSense (https://www.pfsense.org)
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* Copyright (c) 2015 Warren Baker <warren@percol8.co.za>
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* Copyright (c) 2015-2018 Rubicon Communications, LLC (Netgate)
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* All rights reserved.
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*
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* originally part of m0n0wall (http://m0n0.ch/wall)
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* Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>.
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* All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* include all configuration functions */
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require_once("config.inc");
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require_once("functions.inc");
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require_once("filter.inc");
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require_once("shaper.inc");
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function create_unbound_chroot_path($cfgsubdir = "") {
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global $config, $g;
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// Configure chroot
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if (!is_dir($g['unbound_chroot_path'])) {
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mkdir($g['unbound_chroot_path']);
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chown($g['unbound_chroot_path'], "unbound");
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chgrp($g['unbound_chroot_path'], "unbound");
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}
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if ($cfgsubdir != "") {
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$cfgdir = $g['unbound_chroot_path'] . $cfgsubdir;
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if (!is_dir($cfgdir)) {
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mkdir($cfgdir);
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chown($cfgdir, "unbound");
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chgrp($cfgdir, "unbound");
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}
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}
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}
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/* Optimize Unbound for environment */
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function unbound_optimization() {
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global $config;
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$optimization_settings = array();
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/*
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* Set the number of threads equal to number of CPUs.
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* Use 1 to disable threading, if for some reason this sysctl fails.
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*/
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$numprocs = intval(get_single_sysctl('kern.smp.cpus'));
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if ($numprocs > 1) {
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$optimization['number_threads'] = "num-threads: {$numprocs}";
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$optimize_num = pow(2, floor(log($numprocs, 2)));
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} else {
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$optimization['number_threads'] = "num-threads: 1";
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$optimize_num = 4;
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}
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// Slabs to help reduce lock contention.
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$optimization['msg_cache_slabs'] = "msg-cache-slabs: {$optimize_num}";
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$optimization['rrset_cache_slabs'] = "rrset-cache-slabs: {$optimize_num}";
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$optimization['infra_cache_slabs'] = "infra-cache-slabs: {$optimize_num}";
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$optimization['key_cache_slabs'] = "key-cache-slabs: {$optimize_num}";
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/*
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* Larger socket buffer for busy servers
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* Check that it is set to 4MB (by default the OS has it configured to 4MB)
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*/
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if (is_array($config['sysctl']) && is_array($config['sysctl']['item'])) {
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foreach ($config['sysctl']['item'] as $tunable) {
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if ($tunable['tunable'] == 'kern.ipc.maxsockbuf') {
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$so = floor(($tunable['value']/1024/1024)-4);
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// Check to ensure that the number is not a negative
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if ($so >= 4) {
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// Limit to 32MB, users might set maxsockbuf very high for other reasons.
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// We do not want unbound to fail because of that.
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$so = min($so, 32);
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$optimization['so_rcvbuf'] = "so-rcvbuf: {$so}m";
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} else {
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unset($optimization['so_rcvbuf']);
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}
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}
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}
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}
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// Safety check in case kern.ipc.maxsockbuf is not available.
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if (!isset($optimization['so_rcvbuf'])) {
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$optimization['so_rcvbuf'] = "#so-rcvbuf: 4m";
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}
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return $optimization;
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}
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function test_unbound_config($unboundcfg, &$output) {
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global $g;
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$cfgsubdir = "/test";
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$cfgdir = "{$g['unbound_chroot_path']}{$cfgsubdir}";
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rmdir_recursive($cfgdir);
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unbound_generate_config($unboundcfg, $cfgsubdir);
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unbound_remote_control_setup($cfgsubdir);
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do_as_unbound_user("unbound-anchor", $cfgsubdir);
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$rv = 0;
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exec("/usr/local/sbin/unbound-checkconf {$cfgdir}/unbound.conf 2>&1",
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$output, $rv);
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if ($rv == 0) {
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rmdir_recursive($cfgdir);
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}
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return $rv;
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}
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function unbound_generate_config($unboundcfg = NULL, $cfgsubdir = "") {
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global $g;
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$unboundcfgtxt = unbound_generate_config_text($unboundcfg, $cfgsubdir);
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// Configure static Host entries
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unbound_add_host_entries($cfgsubdir);
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// Configure Domain Overrides
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unbound_add_domain_overrides("", $cfgsubdir);
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// Configure Unbound access-lists
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unbound_acls_config($cfgsubdir);
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create_unbound_chroot_path($cfgsubdir);
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file_put_contents("{$g['unbound_chroot_path']}{$cfgsubdir}/unbound.conf", $unboundcfgtxt);
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}
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function unbound_generate_config_text($unboundcfg = NULL, $cfgsubdir = "") {
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global $config, $g;
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if (is_null($unboundcfg)) {
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$unboundcfg = $config['unbound'];
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}
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// Setup optimization
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$optimization = unbound_optimization();
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// Setup DNSSEC support
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if (isset($unboundcfg['dnssec'])) {
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$module_config = "validator iterator";
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$anchor_file = "auto-trust-anchor-file: {$g['unbound_chroot_path']}{$cfgsubdir}/root.key";
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} else {
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$module_config = "iterator";
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}
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// Setup DNS Rebinding
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if (!isset($config['system']['webgui']['nodnsrebindcheck'])) {
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// Private-addresses for DNS Rebinding
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$private_addr = <<<EOF
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# For DNS Rebinding prevention
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private-address: 10.0.0.0/8
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private-address: 172.16.0.0/12
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private-address: 169.254.0.0/16
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private-address: 192.168.0.0/16
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private-address: fd00::/8
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private-address: fe80::/10
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EOF;
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}
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// Determine interfaces where unbound will bind
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$sslport = is_numeric($unboundcfg['sslport']) ? $unboundcfg['sslport'] : "853";
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$bindintcfg = "";
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$bindints = array();
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$active_interfaces = explode(",", $unboundcfg['active_interface']);
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if (empty($unboundcfg['active_interface']) || in_array("all", $active_interfaces, true)) {
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$bindints[] = "0.0.0.0";
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$bindints[] = "::0";
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$bindintcfg .= "interface-automatic: " . (isset($unboundcfg['enablessl']) ? "no" : "yes") . "\n";
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} else {
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foreach ($active_interfaces as $ubif) {
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if (is_ipaddr($ubif)) {
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$bindints[] = $ubif;
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} else {
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$intip = get_interface_ip($ubif);
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if (is_ipaddrv4($intip)) {
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$bindints[] = $intip;
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}
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$intip = get_interface_ipv6($ubif);
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if (is_ipaddrv6($intip)) {
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$bindints[] = $intip;
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}
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}
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}
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}
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foreach ($bindints as $bindint) {
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$bindintcfg .= "interface: {$bindint}\n";
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if (isset($unboundcfg['enablessl'])) {
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$bindintcfg .= "interface: {$bindint}@{$sslport}\n";
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}
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}
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// SSL Configuration
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$sslconfig = "";
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if (isset($unboundcfg['enablessl'])) {
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$sslcert_path = "{$g['unbound_chroot_path']}/sslcert.crt";
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$sslkey_path = "{$g['unbound_chroot_path']}/sslcert.key";
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// Enable SSL on the chosen or default port
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$sslconfig .= "ssl-port: {$sslport}\n";
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// Lookup CA and Server Cert
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$cert = lookup_cert($unboundcfg['sslcertref']);
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$ca = ca_chain($cert);
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$cert_chain = base64_decode($cert['crt']);
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if (!empty($ca)) {
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$cert_chain .= "\n" . $ca;
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}
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// Write CA and Server Cert
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file_put_contents($sslcert_path, $cert_chain);
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chmod($sslcert_path, 0644);
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file_put_contents($sslkey_path, base64_decode($cert['prv']));
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chmod($sslkey_path, 0600);
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// Add config for CA and Server Cert
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$sslconfig .= "ssl-service-pem: \"{$sslcert_path}\"\n";
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$sslconfig .= "ssl-service-key: \"{$sslkey_path}\"\n";
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}
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// Determine interfaces to run on
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$outgoingints = "";
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if (!empty($unboundcfg['outgoing_interface'])) {
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$outgoingints = "# Outgoing interfaces to be used\n";
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$outgoing_interfaces = explode(",", $unboundcfg['outgoing_interface']);
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foreach ($outgoing_interfaces as $outif) {
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$outip = get_interface_ip($outif);
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if (is_ipaddr($outip)) {
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$outgoingints .= "outgoing-interface: $outip\n";
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}
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$outip = get_interface_ipv6($outif);
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if (is_ipaddrv6($outip)) {
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$outgoingints .= "outgoing-interface: $outip\n";
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}
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}
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}
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// Allow DNS Rebind for forwarded domains
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if (isset($unboundcfg['domainoverrides']) && is_array($unboundcfg['domainoverrides'])) {
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if (!isset($config['system']['webgui']['nodnsrebindcheck'])) {
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$private_domains = "# Set private domains in case authoritative name server returns a Private IP address\n";
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$private_domains .= unbound_add_domain_overrides("private");
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}
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$reverse_zones .= unbound_add_domain_overrides("reverse");
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}
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// Configure Unbound statistics
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$statistics = unbound_statistics();
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// Add custom Unbound options
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if ($unboundcfg['custom_options']) {
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$custom_options_source = explode("\n", base64_decode($unboundcfg['custom_options']));
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$custom_options = "# Unbound custom options\n";
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foreach ($custom_options_source as $ent) {
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$custom_options .= $ent."\n";
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}
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}
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// Server configuration variables
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$port = (is_port($unboundcfg['port'])) ? $unboundcfg['port'] : "53";
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$hide_identity = isset($unboundcfg['hideidentity']) ? "yes" : "no";
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$hide_version = isset($unboundcfg['hideversion']) ? "yes" : "no";
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$ipv6_allow = isset($config['system']['ipv6allow']) ? "yes" : "no";
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$harden_dnssec_stripped = isset($unboundcfg['dnssecstripped']) ? "yes" : "no";
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$prefetch = isset($unboundcfg['prefetch']) ? "yes" : "no";
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$prefetch_key = isset($unboundcfg['prefetchkey']) ? "yes" : "no";
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$dns_record_cache = isset($unboundcfg['dnsrecordcache']) ? "yes" : "no";
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$outgoing_num_tcp = isset($unboundcfg['outgoing_num_tcp']) ? $unboundcfg['outgoing_num_tcp'] : "10";
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$incoming_num_tcp = isset($unboundcfg['incoming_num_tcp']) ? $unboundcfg['incoming_num_tcp'] : "10";
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$edns_buffer_size = (!empty($unboundcfg['edns_buffer_size'])) ? $unboundcfg['edns_buffer_size'] : "4096";
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$num_queries_per_thread = (!empty($unboundcfg['num_queries_per_thread'])) ? $unboundcfg['num_queries_per_thread'] : "4096";
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$jostle_timeout = (!empty($unboundcfg['jostle_timeout'])) ? $unboundcfg['jostle_timeout'] : "200";
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$cache_max_ttl = (!empty($unboundcfg['cache_max_ttl'])) ? $unboundcfg['cache_max_ttl'] : "86400";
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$cache_min_ttl = (!empty($unboundcfg['cache_min_ttl'])) ? $unboundcfg['cache_min_ttl'] : "0";
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$infra_host_ttl = (!empty($unboundcfg['infra_host_ttl'])) ? $unboundcfg['infra_host_ttl'] : "900";
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$infra_cache_numhosts = (!empty($unboundcfg['infra_cache_numhosts'])) ? $unboundcfg['infra_cache_numhosts'] : "10000";
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$unwanted_reply_threshold = (!empty($unboundcfg['unwanted_reply_threshold'])) ? $unboundcfg['unwanted_reply_threshold'] : "0";
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if ($unwanted_reply_threshold == "disabled") {
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$unwanted_reply_threshold = "0";
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}
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$msg_cache_size = (!empty($unboundcfg['msgcachesize'])) ? $unboundcfg['msgcachesize'] : "4";
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$verbosity = isset($unboundcfg['log_verbosity']) ? $unboundcfg['log_verbosity'] : 1;
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$use_caps = isset($unboundcfg['use_caps']) ? "yes" : "no";
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304
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305
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if (isset($unboundcfg['regovpnclients'])) {
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306
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$openvpn_clients_conf .=<<<EOD
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# OpenVPN client entries
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308
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include: {$g['unbound_chroot_path']}{$cfgsubdir}/openvpn.*.conf
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EOD;
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} else {
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$openvpn_clients_conf = '';
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}
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// Set up forwarding if it is configured
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if (isset($unboundcfg['forwarding'])) {
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$dnsservers = array();
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317
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if (isset($config['system']['dnsallowoverride'])) {
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$ns = array_unique(get_nameservers());
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foreach ($ns as $nameserver) {
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if ($nameserver) {
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$dnsservers[] = $nameserver;
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}
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}
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} else {
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$ns = array();
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}
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$sys_dnsservers = array_unique(get_dns_servers());
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328
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foreach ($sys_dnsservers as $sys_dnsserver) {
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329
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if ($sys_dnsserver && (!in_array($sys_dnsserver, $ns))) {
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$dnsservers[] = $sys_dnsserver;
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}
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332
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}
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333
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334
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if (!empty($dnsservers)) {
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$forward_conf .=<<<EOD
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336
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# Forwarding
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337
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forward-zone:
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338
|
name: "."
|
|
339
|
|
|
340
|
EOD;
|
|
341
|
if (isset($unboundcfg['forward_tls_upstream'])) {
|
|
342
|
$forward_conf .= "\tforward-tls-upstream: yes\n";
|
|
343
|
}
|
|
344
|
foreach ($dnsservers as $dnsserver) {
|
|
345
|
if (is_ipaddr($dnsserver) && !ip_in_subnet($dnsserver, "127.0.0.0/8")) {
|
|
346
|
$fwdport = isset($unboundcfg['forward_tls_upstream']) ? "@853" : "";
|
|
347
|
$forward_conf .= "\tforward-addr: {$dnsserver}{$fwdport}\n";
|
|
348
|
}
|
|
349
|
}
|
|
350
|
}
|
|
351
|
} else {
|
|
352
|
$forward_conf = "";
|
|
353
|
}
|
|
354
|
|
|
355
|
// Size of the RRset cache == 2 * msg-cache-size per Unbound's recommendations
|
|
356
|
$rrset_cache_size = $msg_cache_size * 2;
|
|
357
|
|
|
358
|
/* QNAME Minimization. https://redmine.pfsense.org/issues/8028
|
|
359
|
* Unbound uses the British style in the option name so the internal option
|
|
360
|
* name follows that, but the user-visible descriptions follow US English.
|
|
361
|
*/
|
|
362
|
$qname_min = "";
|
|
363
|
if (isset($unboundcfg['qname-minimisation'])) {
|
|
364
|
$qname_min = "qname-minimisation: yes\n";
|
|
365
|
if (isset($unboundcfg['qname-minimisation-strict'])) {
|
|
366
|
$qname_min .= "qname-minimisation-strict: yes\n";
|
|
367
|
}
|
|
368
|
}
|
|
369
|
|
|
370
|
$unboundconf = <<<EOD
|
|
371
|
##########################
|
|
372
|
# Unbound Configuration
|
|
373
|
##########################
|
|
374
|
|
|
375
|
##
|
|
376
|
# Server configuration
|
|
377
|
##
|
|
378
|
server:
|
|
379
|
{$reverse_zones}
|
|
380
|
chroot: {$g['unbound_chroot_path']}
|
|
381
|
username: "unbound"
|
|
382
|
directory: "{$g['unbound_chroot_path']}"
|
|
383
|
pidfile: "/var/run/unbound.pid"
|
|
384
|
use-syslog: yes
|
|
385
|
port: {$port}
|
|
386
|
verbosity: {$verbosity}
|
|
387
|
hide-identity: {$hide_identity}
|
|
388
|
hide-version: {$hide_version}
|
|
389
|
harden-glue: yes
|
|
390
|
do-ip4: yes
|
|
391
|
do-ip6: {$ipv6_allow}
|
|
392
|
do-udp: yes
|
|
393
|
do-tcp: yes
|
|
394
|
do-daemonize: yes
|
|
395
|
module-config: "{$module_config}"
|
|
396
|
unwanted-reply-threshold: {$unwanted_reply_threshold}
|
|
397
|
num-queries-per-thread: {$num_queries_per_thread}
|
|
398
|
jostle-timeout: {$jostle_timeout}
|
|
399
|
infra-host-ttl: {$infra_host_ttl}
|
|
400
|
infra-cache-numhosts: {$infra_cache_numhosts}
|
|
401
|
outgoing-num-tcp: {$outgoing_num_tcp}
|
|
402
|
incoming-num-tcp: {$incoming_num_tcp}
|
|
403
|
edns-buffer-size: {$edns_buffer_size}
|
|
404
|
cache-max-ttl: {$cache_max_ttl}
|
|
405
|
cache-min-ttl: {$cache_min_ttl}
|
|
406
|
harden-dnssec-stripped: {$harden_dnssec_stripped}
|
|
407
|
msg-cache-size: {$msg_cache_size}m
|
|
408
|
rrset-cache-size: {$rrset_cache_size}m
|
|
409
|
{$qname_min}
|
|
410
|
{$optimization['number_threads']}
|
|
411
|
{$optimization['msg_cache_slabs']}
|
|
412
|
{$optimization['rrset_cache_slabs']}
|
|
413
|
{$optimization['infra_cache_slabs']}
|
|
414
|
{$optimization['key_cache_slabs']}
|
|
415
|
outgoing-range: 4096
|
|
416
|
{$optimization['so_rcvbuf']}
|
|
417
|
{$anchor_file}
|
|
418
|
prefetch: {$prefetch}
|
|
419
|
prefetch-key: {$prefetch_key}
|
|
420
|
use-caps-for-id: {$use_caps}
|
|
421
|
serve-expired: {$dns_record_cache}
|
|
422
|
# Statistics
|
|
423
|
{$statistics}
|
|
424
|
# SSL Configuration
|
|
425
|
{$sslconfig}
|
|
426
|
# Interface IP(s) to bind to
|
|
427
|
{$bindintcfg}
|
|
428
|
{$outgoingints}
|
|
429
|
# DNS Rebinding
|
|
430
|
{$private_addr}
|
|
431
|
{$private_domains}
|
|
432
|
|
|
433
|
# Access lists
|
|
434
|
include: {$g['unbound_chroot_path']}{$cfgsubdir}/access_lists.conf
|
|
435
|
|
|
436
|
# Static host entries
|
|
437
|
include: {$g['unbound_chroot_path']}{$cfgsubdir}/host_entries.conf
|
|
438
|
|
|
439
|
# dhcp lease entries
|
|
440
|
include: {$g['unbound_chroot_path']}{$cfgsubdir}/dhcpleases_entries.conf
|
|
441
|
|
|
442
|
{$openvpn_clients_conf}
|
|
443
|
|
|
444
|
# Domain overrides
|
|
445
|
include: {$g['unbound_chroot_path']}{$cfgsubdir}/domainoverrides.conf
|
|
446
|
{$forward_conf}
|
|
447
|
|
|
448
|
{$custom_options}
|
|
449
|
|
|
450
|
###
|
|
451
|
# Remote Control Config
|
|
452
|
###
|
|
453
|
include: {$g['unbound_chroot_path']}{$cfgsubdir}/remotecontrol.conf
|
|
454
|
|
|
455
|
EOD;
|
|
456
|
|
|
457
|
return $unboundconf;
|
|
458
|
}
|
|
459
|
|
|
460
|
function unbound_remote_control_setup($cfgsubdir = "") {
|
|
461
|
global $g;
|
|
462
|
|
|
463
|
if (!file_exists("{$g['unbound_chroot_path']}{$cfgsubdir}/remotecontrol.conf") || !file_exists("{$g['unbound_chroot_path']}{$cfgsubdir}/unbound_control.key")) {
|
|
464
|
$remotcfg = <<<EOF
|
|
465
|
remote-control:
|
|
466
|
control-enable: yes
|
|
467
|
control-interface: 127.0.0.1
|
|
468
|
control-port: 953
|
|
469
|
server-key-file: "{$g['unbound_chroot_path']}{$cfgsubdir}/unbound_server.key"
|
|
470
|
server-cert-file: "{$g['unbound_chroot_path']}{$cfgsubdir}/unbound_server.pem"
|
|
471
|
control-key-file: "{$g['unbound_chroot_path']}{$cfgsubdir}/unbound_control.key"
|
|
472
|
control-cert-file: "{$g['unbound_chroot_path']}{$cfgsubdir}/unbound_control.pem"
|
|
473
|
|
|
474
|
EOF;
|
|
475
|
|
|
476
|
create_unbound_chroot_path($cfgsubdir);
|
|
477
|
file_put_contents("{$g['unbound_chroot_path']}{$cfgsubdir}/remotecontrol.conf", $remotcfg);
|
|
478
|
|
|
479
|
// Generate our keys
|
|
480
|
do_as_unbound_user("unbound-control-setup", $cfgsubdir);
|
|
481
|
|
|
482
|
}
|
|
483
|
}
|
|
484
|
|
|
485
|
function sync_unbound_service() {
|
|
486
|
global $config, $g;
|
|
487
|
|
|
488
|
create_unbound_chroot_path();
|
|
489
|
|
|
490
|
// Configure our Unbound service
|
|
491
|
do_as_unbound_user("unbound-anchor");
|
|
492
|
unbound_remote_control_setup();
|
|
493
|
unbound_generate_config();
|
|
494
|
do_as_unbound_user("start");
|
|
495
|
require_once("service-utils.inc");
|
|
496
|
if (is_service_running("unbound")) {
|
|
497
|
do_as_unbound_user("restore_cache");
|
|
498
|
}
|
|
499
|
|
|
500
|
}
|
|
501
|
|
|
502
|
function unbound_acl_id_used($id) {
|
|
503
|
global $config;
|
|
504
|
|
|
505
|
if (is_array($config['unbound']['acls'])) {
|
|
506
|
foreach ($config['unbound']['acls'] as & $acls) {
|
|
507
|
if ($id == $acls['aclid']) {
|
|
508
|
return true;
|
|
509
|
}
|
|
510
|
}
|
|
511
|
}
|
|
512
|
|
|
513
|
return false;
|
|
514
|
}
|
|
515
|
|
|
516
|
function unbound_get_next_id() {
|
|
517
|
$aclid = 0;
|
|
518
|
while (unbound_acl_id_used($aclid)) {
|
|
519
|
$aclid++;
|
|
520
|
}
|
|
521
|
return $aclid;
|
|
522
|
}
|
|
523
|
|
|
524
|
// Execute commands as the user unbound
|
|
525
|
function do_as_unbound_user($cmd, $param1 = "") {
|
|
526
|
global $g;
|
|
527
|
|
|
528
|
switch ($cmd) {
|
|
529
|
case "start":
|
|
530
|
mwexec("/usr/local/sbin/unbound -c {$g['unbound_chroot_path']}/unbound.conf");
|
|
531
|
break;
|
|
532
|
case "stop":
|
|
533
|
mwexec("echo '/usr/local/sbin/unbound-control -c {$g['unbound_chroot_path']}/unbound.conf stop' | /usr/bin/su -m unbound", true);
|
|
534
|
break;
|
|
535
|
case "reload":
|
|
536
|
mwexec("echo '/usr/local/sbin/unbound-control -c {$g['unbound_chroot_path']}/unbound.conf reload' | /usr/bin/su -m unbound", true);
|
|
537
|
break;
|
|
538
|
case "unbound-anchor":
|
|
539
|
$root_key_file = "{$g['unbound_chroot_path']}{$param1}/root.key";
|
|
540
|
// sanity check root.key because unbound-anchor will fail without manual removal otherwise. redmine #5334
|
|
541
|
if (file_exists($root_key_file)) {
|
|
542
|
$rootkeycheck = mwexec("/usr/bin/grep 'autotrust trust anchor file' {$root_key_file}", true);
|
|
543
|
if ($rootkeycheck != "0") {
|
|
544
|
log_error("Unbound {$root_key_file} file is corrupt, removing and recreating.");
|
|
545
|
unlink_if_exists($root_key_file);
|
|
546
|
}
|
|
547
|
}
|
|
548
|
mwexec("echo '/usr/local/sbin/unbound-anchor -a {$root_key_file}' | /usr/bin/su -m unbound", true);
|
|
549
|
// Only sync the file if this is the real (default) one, not a test one.
|
|
550
|
if ($param1 == "") {
|
|
551
|
pfSense_fsync($root_key_file);
|
|
552
|
}
|
|
553
|
break;
|
|
554
|
case "unbound-control-setup":
|
|
555
|
mwexec("echo '/usr/local/sbin/unbound-control-setup -d {$g['unbound_chroot_path']}{$param1}' | /usr/bin/su -m unbound", true);
|
|
556
|
break;
|
|
557
|
default:
|
|
558
|
break;
|
|
559
|
}
|
|
560
|
}
|
|
561
|
|
|
562
|
function unbound_add_domain_overrides($pvt_rev="", $cfgsubdir = "") {
|
|
563
|
global $config, $g;
|
|
564
|
|
|
565
|
$domains = $config['unbound']['domainoverrides'];
|
|
566
|
|
|
567
|
$sorted_domains = msort($domains, "domain");
|
|
568
|
$result = array();
|
|
569
|
$tls_domains = array();
|
|
570
|
foreach ($sorted_domains as $domain) {
|
|
571
|
$domain_key = current($domain);
|
|
572
|
if (!isset($result[$domain_key])) {
|
|
573
|
$result[$domain_key] = array();
|
|
574
|
}
|
|
575
|
$result[$domain_key][] = $domain['ip'];
|
|
576
|
/* If any entry for a domain has TLS set, it will be active for all entries. */
|
|
577
|
if (isset($domain['forward_tls_upstream'])) {
|
|
578
|
$tls_domains[] = $domain_key;
|
|
579
|
}
|
|
580
|
}
|
|
581
|
|
|
582
|
// Domain overrides that have multiple entries need multiple stub-addr: added
|
|
583
|
$domain_entries = "";
|
|
584
|
foreach ($result as $domain=>$ips) {
|
|
585
|
if ($pvt_rev == "private") {
|
|
586
|
$domain_entries .= "private-domain: \"$domain\"\n";
|
|
587
|
$domain_entries .= "domain-insecure: \"$domain\"\n";
|
|
588
|
} else if ($pvt_rev == "reverse") {
|
|
589
|
if ((substr($domain, -14) == ".in-addr.arpa.") || (substr($domain, -13) == ".in-addr.arpa")) {
|
|
590
|
$domain_entries .= "local-zone: \"$domain\" typetransparent\n";
|
|
591
|
}
|
|
592
|
} else {
|
|
593
|
$domain_entries .= "forward-zone:\n";
|
|
594
|
$domain_entries .= "\tname: \"$domain\"\n";
|
|
595
|
$fwdport = "";
|
|
596
|
/* Enable TLS forwarding for this domain if needed. */
|
|
597
|
if (in_array($domain, $tls_domains)) {
|
|
598
|
$domain_entries .= "\tforward-tls-upstream: yes\n";
|
|
599
|
$fwdport = "@853";
|
|
600
|
}
|
|
601
|
foreach ($ips as $ip) {
|
|
602
|
/* If an IP address already contains a port specification, do not add another. */
|
|
603
|
if (strstr($ip, '@') !== false) {
|
|
604
|
$fwdport = "";
|
|
605
|
}
|
|
606
|
$domain_entries .= "\tforward-addr: {$ip}{$fwdport}\n";
|
|
607
|
}
|
|
608
|
}
|
|
609
|
}
|
|
610
|
|
|
611
|
if ($pvt_rev != "") {
|
|
612
|
return $domain_entries;
|
|
613
|
} else {
|
|
614
|
create_unbound_chroot_path($cfgsubdir);
|
|
615
|
file_put_contents("{$g['unbound_chroot_path']}{$cfgsubdir}/domainoverrides.conf", $domain_entries);
|
|
616
|
}
|
|
617
|
}
|
|
618
|
|
|
619
|
function unbound_generate_zone_data($domain, $hosts, &$added_ptr, $zone_type = "transparent", $write_domain_zone_declaration = false, $always_add_short_names = false) {
|
|
620
|
global $config;
|
|
621
|
if ($write_domain_zone_declaration) {
|
|
622
|
$zone_data = "local-zone: \"{$domain}.\" {$zone_type}\n";
|
|
623
|
} else {
|
|
624
|
$zone_data = "";
|
|
625
|
}
|
|
626
|
foreach ($hosts as $host) {
|
|
627
|
if (is_ipaddrv4($host['ipaddr'])) {
|
|
628
|
$type = 'A';
|
|
629
|
} else if (is_ipaddrv6($host['ipaddr'])) {
|
|
630
|
$type = 'AAAA';
|
|
631
|
} else {
|
|
632
|
continue;
|
|
633
|
}
|
|
634
|
if (!$added_ptr[$host['ipaddr']]) {
|
|
635
|
$zone_data .= "local-data-ptr: \"{$host['ipaddr']} {$host['fqdn']}\"\n";
|
|
636
|
$added_ptr[$host['ipaddr']] = true;
|
|
637
|
}
|
|
638
|
/* For the system localhost entry, write an entry for just the hostname. */
|
|
639
|
if ((($host['name'] == "localhost") && ($domain == $config['system']['domain'])) || $always_add_short_names) {
|
|
640
|
$zone_data .= "local-data: \"{$host['name']}. {$type} {$host['ipaddr']}\"\n";
|
|
641
|
}
|
|
642
|
/* Redirect zones must have a zone declaration that matches the
|
|
643
|
* local-data record exactly, it cannot have entries "under" the
|
|
644
|
* domain.
|
|
645
|
*/
|
|
646
|
if ($zone_type == "redirect") {
|
|
647
|
$zone_data .= "local-zone: \"{$host['fqdn']}.\" {$zone_type}\n";;
|
|
648
|
}
|
|
649
|
$zone_data .= "local-data: \"{$host['fqdn']}. {$type} {$host['ipaddr']}\"\n";
|
|
650
|
}
|
|
651
|
return $zone_data;
|
|
652
|
}
|
|
653
|
|
|
654
|
function unbound_add_host_entries($cfgsubdir = "") {
|
|
655
|
global $config, $g;
|
|
656
|
|
|
657
|
$hosts = system_hosts_entries($config['unbound']);
|
|
658
|
|
|
659
|
/* Pass 1: Build domain list and hosts inside domains */
|
|
660
|
$hosts_by_domain = array();
|
|
661
|
foreach ($hosts as $host) {
|
|
662
|
if (!array_key_exists($host['domain'], $hosts_by_domain)) {
|
|
663
|
$hosts_by_domain[$host['domain']] = array();
|
|
664
|
}
|
|
665
|
$hosts_by_domain[$host['domain']][] = $host;
|
|
666
|
}
|
|
667
|
|
|
668
|
$added_ptr = array();
|
|
669
|
/* Build local zone data */
|
|
670
|
// Check if auto add host entries is not set
|
|
671
|
$system_domain_local_zone_type = "transparent";
|
|
672
|
if (!isset($config['unbound']['disable_auto_added_host_entries'])) {
|
|
673
|
// Make sure the config setting is a valid unbound local zone type. If not use "transparent".
|
|
674
|
if (array_key_exists($config['unbound']['system_domain_local_zone_type'], unbound_local_zone_types())) {
|
|
675
|
$system_domain_local_zone_type = $config['unbound']['system_domain_local_zone_type'];
|
|
676
|
}
|
|
677
|
}
|
|
678
|
/* Add entries for the system domain before all others */
|
|
679
|
if (array_key_exists($config['system']['domain'], $hosts_by_domain)) {
|
|
680
|
$unbound_entries .= unbound_generate_zone_data($config['system']['domain'],
|
|
681
|
$hosts_by_domain[$config['system']['domain']],
|
|
682
|
$added_ptr,
|
|
683
|
$system_domain_local_zone_type,
|
|
684
|
true);
|
|
685
|
/* Unset this so it isn't processed again by the loop below. */
|
|
686
|
unset($hosts_by_domain[$config['system']['domain']]);
|
|
687
|
}
|
|
688
|
|
|
689
|
/* Build zone data for other domain */
|
|
690
|
foreach ($hosts_by_domain as $domain => $hosts) {
|
|
691
|
$unbound_entries .= unbound_generate_zone_data($domain,
|
|
692
|
$hosts,
|
|
693
|
$added_ptr,
|
|
694
|
"transparent",
|
|
695
|
false,
|
|
696
|
isset($config['unbound']['always_add_short_names']));
|
|
697
|
}
|
|
698
|
|
|
699
|
// Write out entries
|
|
700
|
create_unbound_chroot_path($cfgsubdir);
|
|
701
|
file_put_contents("{$g['unbound_chroot_path']}{$cfgsubdir}/host_entries.conf", $unbound_entries);
|
|
702
|
|
|
703
|
/* dhcpleases will write to this config file, make sure it exists */
|
|
704
|
@touch("{$g['unbound_chroot_path']}{$cfgsubdir}/dhcpleases_entries.conf");
|
|
705
|
}
|
|
706
|
|
|
707
|
function unbound_control($action) {
|
|
708
|
global $config, $g;
|
|
709
|
|
|
710
|
$cache_dumpfile = "/var/tmp/unbound_cache";
|
|
711
|
|
|
712
|
switch ($action) {
|
|
713
|
case "start":
|
|
714
|
// Start Unbound
|
|
715
|
if ($config['unbound']['enable'] == "on") {
|
|
716
|
if (!is_service_running("unbound")) {
|
|
717
|
do_as_unbound_user("start");
|
|
718
|
}
|
|
719
|
}
|
|
720
|
break;
|
|
721
|
case "stop":
|
|
722
|
if ($config['unbound']['enable'] == "on") {
|
|
723
|
do_as_unbound_user("stop");
|
|
724
|
}
|
|
725
|
break;
|
|
726
|
case "reload":
|
|
727
|
if ($config['unbound']['enable'] == "on") {
|
|
728
|
do_as_unbound_user("reload");
|
|
729
|
}
|
|
730
|
break;
|
|
731
|
case "dump_cache":
|
|
732
|
// Dump Unbound's Cache
|
|
733
|
if ($config['unbound']['dumpcache'] == "on") {
|
|
734
|
do_as_unbound_user("dump_cache");
|
|
735
|
}
|
|
736
|
break;
|
|
737
|
case "restore_cache":
|
|
738
|
// Restore Unbound's Cache
|
|
739
|
if ((is_service_running("unbound")) && ($config['unbound']['dumpcache'] == "on")) {
|
|
740
|
if (file_exists($cache_dumpfile) && filesize($cache_dumpfile) > 0) {
|
|
741
|
do_as_unbound_user("load_cache < /var/tmp/unbound_cache");
|
|
742
|
}
|
|
743
|
}
|
|
744
|
break;
|
|
745
|
default:
|
|
746
|
break;
|
|
747
|
|
|
748
|
}
|
|
749
|
}
|
|
750
|
|
|
751
|
// Generation of Unbound statistics
|
|
752
|
function unbound_statistics() {
|
|
753
|
global $config;
|
|
754
|
|
|
755
|
if ($config['stats'] == "on") {
|
|
756
|
$stats_interval = $config['unbound']['stats_interval'];
|
|
757
|
$cumulative_stats = $config['cumulative_stats'];
|
|
758
|
if ($config['extended_stats'] == "on") {
|
|
759
|
$extended_stats = "yes";
|
|
760
|
} else {
|
|
761
|
$extended_stats = "no";
|
|
762
|
}
|
|
763
|
} else {
|
|
764
|
$stats_interval = "0";
|
|
765
|
$cumulative_stats = "no";
|
|
766
|
$extended_stats = "no";
|
|
767
|
}
|
|
768
|
/* XXX To do - add RRD graphs */
|
|
769
|
$stats = <<<EOF
|
|
770
|
# Unbound Statistics
|
|
771
|
statistics-interval: {$stats_interval}
|
|
772
|
extended-statistics: yes
|
|
773
|
statistics-cumulative: yes
|
|
774
|
|
|
775
|
EOF;
|
|
776
|
|
|
777
|
return $stats;
|
|
778
|
}
|
|
779
|
|
|
780
|
// Unbound Access lists
|
|
781
|
function unbound_acls_config($cfgsubdir = "") {
|
|
782
|
global $g, $config;
|
|
783
|
|
|
784
|
if (!isset($config['unbound']['disable_auto_added_access_control'])) {
|
|
785
|
$aclcfg = "access-control: 127.0.0.1/32 allow_snoop\n";
|
|
786
|
$aclcfg .= "access-control: ::1 allow_snoop\n";
|
|
787
|
// Add our networks for active interfaces including localhost
|
|
788
|
if (!empty($config['unbound']['active_interface'])) {
|
|
789
|
$active_interfaces = array_flip(explode(",", $config['unbound']['active_interface']));
|
|
790
|
if (in_array("all", $active_interfaces)) {
|
|
791
|
$active_interfaces = get_configured_interface_with_descr();
|
|
792
|
}
|
|
793
|
} else {
|
|
794
|
$active_interfaces = get_configured_interface_with_descr();
|
|
795
|
}
|
|
796
|
|
|
797
|
foreach ($active_interfaces as $ubif => $ifdesc) {
|
|
798
|
$ifip = get_interface_ip($ubif);
|
|
799
|
if (is_ipaddrv4($ifip)) {
|
|
800
|
// IPv4 is handled via NAT networks below
|
|
801
|
}
|
|
802
|
$ifip = get_interface_ipv6($ubif);
|
|
803
|
if (is_ipaddrv6($ifip)) {
|
|
804
|
if (!is_linklocal($ifip)) {
|
|
805
|
$subnet_bits = get_interface_subnetv6($ubif);
|
|
806
|
$subnet_ip = gen_subnetv6($ifip, $subnet_bits);
|
|
807
|
// only add LAN-type interfaces
|
|
808
|
if (!interface_has_gateway($ubif)) {
|
|
809
|
$aclcfg .= "access-control: {$subnet_ip}/{$subnet_bits} allow\n";
|
|
810
|
}
|
|
811
|
}
|
|
812
|
// add for IPv6 static routes to local networks
|
|
813
|
// for safety, we include only routes reachable on an interface with no
|
|
814
|
// gateway specified - read: not an Internet connection.
|
|
815
|
$static_routes = get_staticroutes(false, false, true); // Parameter 3 returnenabledroutesonly
|
|
816
|
foreach ($static_routes as $route) {
|
|
817
|
if ((lookup_gateway_interface_by_name($route['gateway']) == $ubif) && !interface_has_gateway($ubif)) {
|
|
818
|
// route is on this interface, interface doesn't have gateway, add it
|
|
819
|
$aclcfg .= "access-control: {$route['network']} allow\n";
|
|
820
|
}
|
|
821
|
}
|
|
822
|
}
|
|
823
|
}
|
|
824
|
|
|
825
|
// Generate IPv4 access-control entries using the same logic as automatic outbound NAT
|
|
826
|
if (empty($FilterIflist)) {
|
|
827
|
filter_generate_optcfg_array();
|
|
828
|
}
|
|
829
|
$natnetworks_array = array();
|
|
830
|
$natnetworks_array = filter_nat_rules_automatic_tonathosts();
|
|
831
|
foreach ($natnetworks_array as $allowednet) {
|
|
832
|
$aclcfg .= "access-control: $allowednet allow \n";
|
|
833
|
}
|
|
834
|
}
|
|
835
|
|
|
836
|
// Configure the custom ACLs
|
|
837
|
if (is_array($config['unbound']['acls'])) {
|
|
838
|
foreach ($config['unbound']['acls'] as $unbound_acl) {
|
|
839
|
$aclcfg .= "#{$unbound_acl['aclname']}\n";
|
|
840
|
foreach ($unbound_acl['row'] as $network) {
|
|
841
|
if ($unbound_acl['aclaction'] == "allow snoop") {
|
|
842
|
$unbound_acl['aclaction'] = "allow_snoop";
|
|
843
|
} elseif ($unbound_acl['aclaction'] == "deny nonlocal") {
|
|
844
|
$unbound_acl['aclaction'] = "deny_non_local";
|
|
845
|
} elseif ($unbound_acl['aclaction'] == "refuse nonlocal") {
|
|
846
|
$unbound_acl['aclaction'] = "refuse_non_local";
|
|
847
|
}
|
|
848
|
$aclcfg .= "access-control: {$network['acl_network']}/{$network['mask']} {$unbound_acl['aclaction']}\n";
|
|
849
|
}
|
|
850
|
}
|
|
851
|
}
|
|
852
|
// Write out Access list
|
|
853
|
create_unbound_chroot_path($cfgsubdir);
|
|
854
|
file_put_contents("{$g['unbound_chroot_path']}{$cfgsubdir}/access_lists.conf", $aclcfg);
|
|
855
|
|
|
856
|
}
|
|
857
|
|
|
858
|
// Generate hosts and reload services
|
|
859
|
function unbound_hosts_generate() {
|
|
860
|
// Generate our hosts file
|
|
861
|
unbound_add_host_entries();
|
|
862
|
|
|
863
|
// Reload our service to read the updates
|
|
864
|
unbound_control("reload");
|
|
865
|
}
|
|
866
|
|
|
867
|
// Array of valid unbound local zone types
|
|
868
|
function unbound_local_zone_types() {
|
|
869
|
return array(
|
|
870
|
"deny" => gettext("Deny"),
|
|
871
|
"refuse" => gettext("Refuse"),
|
|
872
|
"static" => gettext("Static"),
|
|
873
|
"transparent" => gettext("Transparent"),
|
|
874
|
"typetransparent" => gettext("Type Transparent"),
|
|
875
|
"redirect" => gettext("Redirect"),
|
|
876
|
"inform" => gettext("Inform"),
|
|
877
|
"inform_deny" => gettext("Inform Deny"),
|
|
878
|
"nodefault" => gettext("No Default")
|
|
879
|
);
|
|
880
|
}
|
|
881
|
|
|
882
|
?>
|