Initial commit of the Unbound package (that 1 day will replace dnsmasq). It is currently limited in configuration options but it does what DNSMasq does excluding the DNS rebind check. Need to investigate that.

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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