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Diffstat (limited to 'config/unbound/unbound.inc')
| -rw-r--r-- | config/unbound/unbound.inc | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/config/unbound/unbound.inc b/config/unbound/unbound.inc new file mode 100644 index 00000000..dd7d3024 --- /dev/null +++ b/config/unbound/unbound.inc @@ -0,0 +1,415 @@ +<?php +/* unbound.inc + (C)2010 Warren Baker + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, + OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. +*/ + +if(!function_exists("get_dns_servers")) + require_once("pfsense-utils.inc"); + +if(!function_exists("get_nameservers")) + require_once("system.inc"); + +function unbound_initial_setup() { + global $config; + + if (!array($config['installedpackages']['unbound']['config'])) + $config['installedpackages']['unbound']['config'] = array(); + + $unbound_config = &$config['installedpackages']['unbound']['config'][0]; + + // Setup unbound + mwexec("/bin/mkdir -p /usr/local/etc/unbound /usr/local/etc/unbound/dev"); + touch("/usr/local/etc/unbound/root.hints"); + touch("/usr/local/etc/unbound/root-trust-anchor"); + chown("/usr/local/etc/unbound/root-trust-anchor", "unbound"); + chgrp("/usr/local/etc/unbound/root-trust-anchor", "wheel"); + chmod("/usr/local/etc/unbound/root-trust-anchor", 0600); + unlink("/usr/local/etc/unbound/unbound.conf.sample"); + unlink("/usr/local/etc/rc.d/unbound"); + + // Setup rc file for startup and shutdown. + unbound_rc_setup(); + + // Disable DNSMasq and enable UNBound + $unbound_config['unbound_status'] = "on"; + + // Set initial interfaces that are allowed to query to lan, if that does not exist set it to the wan + if(count($config['interfaces']) > 1) + $unbound_config['active_interface'] = "lan"; + else + $unbound_config['active_interface'] = "wan"; + + unbound_anchor_setup(); + unbound_resync_config(); + unbound_keys_setup(); + + // Write out the XML config + write_config(); + +} + +function unbound_anchor_setup() { + + $conf = <<<EOD +. IN DS 19036 8 2 49AAC11D7B6F6446702E54A1607371607A1A41855200FD2CE1CDDE32F24E8FB5 +EOD; + + file_put_contents("/usr/local/etc/unbound/root-trust-anchor", $conf); + +} + +function unbound_keys_setup() { + + // Generate SSL Keys for controlling the unbound server + mwexec("/usr/local/sbin/unbound-control-setup"); + +} + +function unbound_rc_setup() { + global $config; + + + // Startup process and idea taken from TinyDNS package (author sullrich@gmail.com) + $filename = "unbound.sh"; + $start = "/usr/local/bin/php -q -d auto_prepend_file=config.inc <<ENDPHP +<?php + require_once(\"/usr/local/pkg/unbound.inc\"); + echo \"Starting and configuring Unbound...\"; + fetch_root_hints(); + unbound_control(\"start\"); + unbound_control(\"forward\"); + echo \"done.\\n\"; +?> +ENDPHP\n"; + +$stop = "/usr/local/bin/php -q -d auto_prepend_file=config.inc <<ENDPHP +<?php + require_once(\"/usr/local/pkg/unbound.inc\"); + echo \"Stopping Unbound...\"; + unbound_control(\"termstop\"); + echo \"done.\\n\"; +?> + +ENDPHP\n"; + + write_rcfile(array( + "file" => $filename, + "start" => $start, + "stop" => $stop + ) + ); + +} + +function unbound_install() { + + conf_mount_rw(); + unbound_initial_setup(); + conf_mount_ro(); + +} + +function unbound_control($action) { + global $config, $g; + + $unbound_config = $config['installedpackages']['unbound']['config'][0]; + + switch ($action) { + case "forward": + /* Dont utilize forward cmd if Unbound is doing DNS queries directly + * XXX: We could make this an option to then make pfSense use Unbound + * as the recursive nameserver instead of upstream ones(?) + */ + if ($unbound_config['forwarding_mode'] == "on") { + // Get configured DNS servers and add them as forwarders + if (!isset($config['system']['dnsallowoverride'])) { + $ns = array_unique(get_nameservers()); + foreach($ns as $nameserver) { + if($nameserver) + $dns_servers .= " $nameserver"; + } + } else { + $ns = array_unique(get_dns_servers()); + foreach($ns as $nameserver) { + if($nameserver) + $dns_servers .= " $nameserver"; + } + } + + if(is_service_running("unbound")) { + unbound_ctl_exec("forward $dns_servers"); + unbound_ctl_exec("reload"); + } else { + unbound_control("start"); + unbound_control("forward"); + } + } + break; + + case "start": + //Start unbound + if($unbound_config['unbound_status'] == "on") { + unbound_ctl_exec("start"); + fetch_root_hints(); + sleep(1); + } + break; + + case "stop": + //Stop unbound and unmount the file system + if($unbound_config['unbound_status'] == "on") { + unbound_ctl_exec("stop"); + } + break; + + case "termstop": + //Stop Unbound by sigkillbypid(); + sigkillbypid("{$g['varrun_path']}/unbound.pid", "TERM"); + break; + + default: + break; + + } + +} + +function unbound_get_network_interface_addresses($subnet=false, $mask=false) { + global $config; + + /* calculate interface ip + subnet information */ + $interfaces = explode(",", $config['installedpackages']['unbound']['config'][0]['active_interface']); + $unbound_interfaces = array(); + foreach ($interfaces as $unboundidx => $unboundif) { + $unboundrealif = convert_friendly_interface_to_real_interface_name($unboundif); + $unboundip = find_interface_ip($unboundrealif); + $ipmask = find_interface_subnet($unboundrealif); + // If $subnet is passed then calculate the beginning of the network range for the IP address + if ($subnet) + $network = gen_subnet($unboundip, $ipmask); + else + $network = $unboundip; + if ($mask) + $unbound_interfaces[] = "$network/$ipmask"; + else + $unbound_interfaces[] = "$network"; + } + return $unbound_interfaces; +} + +function unbound_resync_config() { + global $config, $g; + + if (!array($config['installedpackages']['unbound']['config'])) + $config['installedpackages']['unbound']['config'] = array(); + + $unbound_config = &$config['installedpackages']['unbound']['config'][0]; + + $interfaces = unbound_get_network_interface_addresses(true, true); + foreach($interfaces as $allowed_network) { + $unbound_allowed_networks .= "access-control: $allowed_network allow\n"; + } + + if($unbound_config['dnssec_status'] == "on") { + $module_config = "validator iterator"; + $anchor_file = "auto-trust-anchor-file: /usr/local/etc/unbound/root-trust-anchor"; + } else { + $module_config = "iterator"; + } + + // Interfaces to bind to + $interface_ips = unbound_get_network_interface_addresses(); + foreach($interface_ips as $ifip) { + $unbound_bind_interfaces .="interface: $ifip\n"; + } + + /* Harden DNSSec responses - if DNSSec is absent, zone is marked as bogus + * XXX: for now we always have this set to yes + */ + $unbound_config['harden-dnssec-stripped'] = "yes"; + + // Syslog logging + $unbound_config['use-syslog'] = "yes"; + + // Host entries + $host_entries = unbound_add_host_entries(); + + // Domain Overrides + $domain_overrides = unbound_add_domain_overrides(); + + $unbound_conf = <<<EOD +# Unbound configuration + +server: + verbosity: 1 + port: 53 + do-ip4: yes + do-ip6: no + do-udp: yes + do-tcp: yes + do-daemonize: yes + statistics-interval: 300 + extended-statistics: yes + statistics-cumulative: no + {$unbound_bind_interfaces} + chroot: "" + username: "unbound" + directory: "/usr/local/etc/unbound" + pidfile: "/var/run/unbound.pid" + root-hints: "root.hints" + harden-dnssec-stripped: {$unbound_config['harden-dnssec-stripped']} + harden-referral-path: no + private-address: 10.0.0.0/8 + private-address: 172.16.0.0/12 + private-address: 192.168.0.0/16 + prefetch: yes + prefetch-key: yes + use-syslog: {$unbound_config['use-syslog']} + module-config: "{$module_config}" + unwanted-reply-threshold: 10000000 + {$anchor_file} + access-control: 127.0.0.0/8 allow + {$unbound_allowed_networks} + {$host_entries} + {$domain_overrides} + +remote-control: + control-enable: yes + control-interface: 127.0.0.1 + control-port: 953 + server-key-file: "/usr/local/etc/unbound/unbound_server.key" + server-cert-file: "/usr/local/etc/unbound/unbound_server.pem" + control-key-file: "/usr/local/etc/unbound/unbound_control.key" + control-cert-file: "/usr/local/etc/unbound/unbound_control.pem" + +EOD; + + file_put_contents("/usr/local/etc/unbound/unbound.conf", $unbound_conf); + +} + +function unbound_ctl_exec($cmd) { + + mwexec("/usr/local/sbin/unbound-control $cmd"); + +} + +function fetch_root_hints() { + + $destination_file = "/usr/local/etc/unbound/root.hints"; + if (filesize($destination_file) == 0 ) { + $fout = fopen($destination_file, "w"); + $url = "ftp://ftp.internic.net/domain/named.cache"; + + $ch = curl_init(); + curl_setopt($ch, CURLOPT_URL, $url); + curl_setopt($ch,CURLOPT_RETURNTRANSFER,1); + curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, '5'); + $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); + $data = curl_exec($ch); + curl_close($ch); + + fwrite($fout, $data); + fclose($fout); + + return ($http_code == 200) ? true : $http_code; + } else { + return false; + } +} + +function unbound_reconfigure() { + global $config,$g; + + $unbound_config = $config['installedpackages']['unbound']['config'][0]; + + if ($unbound_config['unbound_status'] != "on") { + if(is_service_running("unbound")) { + unbound_control("termstop"); + } + } else { + if(isset($config['dnsmasq']['enable'])) { + unset($config['dnsmasq']['enable']); + sigkillbypid("{$g['varrun_path']}/dnsmasq.pid", "TERM"); + } + if(is_service_running("unbound")) { + unbound_control("termstop"); + } + unbound_resync_config(); + unbound_control("start"); + unbound_control("forward"); + } + +} + +function unbound_uninstall() { + global $g, $config; + + conf_mount_rw(); + + unbound_control("termstop"); + // Remove pkg config directory and startup file + mwexec("rm -rf /usr/local/etc/unbound"); + mwexec("rm -f /usr/local/etc/rc.d/unbound.sh"); + + conf_mount_ro(); + +} + +/* Setup /etc/hosts entries by overriding with local-data + */ +function unbound_add_host_entries() { + global $config; + + if (isset($config['dnsmasq']['hosts'])) { + $hosts = $config['dnsmasq']['hosts']; + $host_entries = ""; + + foreach ($hosts as $host) { + $host_entries .= "local-data: '{$host['host']}.{$host['domain']}. IN A {$host['ip']}'\n"; + $host_entries .= "\tlocal-data: '{$host['host']}.{$host['domain']}. TXT \"{$host['descr']}\"'\n"; + } + return $host_entries; + } +} + +/* Setup any domain overrides that have been configured with local-zone + */ +function unbound_add_domain_overrides() { + global $config; + + if (isset($config['dnsmasq']['domainoverrides'])) { + $domains = $config['dnsmasq']['domainoverrides']; + $domain_entries = ""; + + foreach($domains as $domain) { + $domain_entries .= "local-zone: '{$domain['domain']}.' redirect\n"; + $domain_entries .= "\tlocal-data: '{$domain['domain']}. A {$domain['ip']}'\n"; + $domain_entries .= "\tlocal-data: '{$domain['domain']}. TXT \"{$domain['descr']}\"'\n"; + + } + return $domain_entries; + } +} + +?>
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