<?php /* unbound.inc part of the pfSense project (https://www.pfsense.org) Copyright (C) 2014 Warren Baker <warren@decoy.co.za> All rights reserved. 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. pfSense_BUILDER_BINARIES: /usr/sbin/unbound /usr/sbin/unbound-anchor /usr/sbin/unbound-checkconf pfSense_BUILDER_BINARIES: /usr/sbin/unbound-control /usr/sbin/unbound-control-setup pfSense_MODULE: unbound */ /* include all configuration functions */ require_once("config.inc"); require_once("functions.inc"); /* Optimize Unbound for environment */ function unbound_optimization() { global $config; $optimization_settings = array(); /* * Set the number of threads equal to number of CPUs. * Use 1 to disable threading, if for some reason this sysctl fails. */ $numprocs = intval(get_single_sysctl('kern.smp.cpus')); if ($numprocs > 0) $optimization['number_threads'] = "num-threads: {$numprocs}"; else $optimization['number_threads'] = "num-threads: 1"; // Slabs to help reduce lock contention. if ($numprocs > 4) { $optimization['msg_cache_slabs'] = "msg-cache-slabs: {$numprocs}"; $optimization['rrset_cache_slabs'] = "rrset-cache-slabs: {$numprocs}"; $optimization['infra_cache_slabs'] = "infra-cache-slabs: {$numprocs}"; $optimization['key_cache_slabs'] = "key-cache-slabs: {$numprocs}"; } else { $optimization['msg_cache_slabs'] = "msg-cache-slabs: 4"; $optimization['rrset_cache_slabs'] = "rrset-cache-slabs: 4"; $optimization['infra_cache_slabs'] = "infra-cache-slabs: 4"; $optimization['key_cache_slabs'] = "key-cache-slabs: 4"; } // Memory usage default of 4MB $optimization['msg_cache_size'] = "msg-cache-size: 4m"; $optimization['rrset_cache_size'] = "rrset-cache-size: 8m"; // More outgoing connections per thread otherwise assign a default of 4096 for a single thread if ($numprocs > 0) { $or = (1024/$numprocs) - 50; $optimization['outgoing_range'] = "outgoing-range: {$or}"; } else $optimization['outgoing_range'] = "outgoing-range: {4096}"; /* * Larger socket buffer for busy servers * Check that it is set to 4MB (by default the OS has it configured to 4MB) */ foreach ($config['sysctl']['item'] as $tunable) { if ($tunable['tunable'] == 'kern.ipc.maxsockbuf') { $so = floor(($tunable['value']/1024/1024)-1); // Check to ensure that the number is not a negative if ($so > 0) $optimization['so_rcvbuf'] = "so-rcvbuf: {$so}m"; else unset($optimization['so_rcvbuf']); } } // Safety check in case kern.ipc.maxsockbuf is not available. if (!isset($optimization['so_rcvbuf'])) $optimization['so_rcvbuf'] = "#so-rcvbuf: 4m"; return $optimization; } function unbound_generate_config() { global $config, $g; // Setup optimization $optimization = unbound_optimization(); // Setup DNSSEC support if (isset($config['unbound']['dnssec'])) { $module_config = "validator iterator"; $anchor_file = "auto-trust-anchor-file: {$g['unbound_chroot_path']}/root.key"; } else $module_config = "iterator"; // Setup DNS Rebinding if (!isset($config['system']['webgui']['nodnsrebindcheck'])) { // Private-addresses for DNS Rebinding $private_addr = <<<EOF # For DNS Rebinding prevention private-address: 10.0.0.0/8 private-address: 172.16.0.0/12 private-address: 192.168.0.0/16 private-address: 192.254.0.0/16 private-address: fd00::/8 private-address: fe80::/10 EOF; } // Determine interfaces to run on $bindints = ""; if (!empty($config['unbound']['active_interface'])) { $active_interfaces = explode(",", $config['unbound']['active_interface']); foreach($active_interfaces as $ubif) { $intip = get_interface_ip($ubif); if (!is_null($intip)) $bindints .= "interface: $intip\n"; $intip = get_interface_ipv6($ubif); if (!is_null($intip)) $bindints .= "interface: $intip\n"; } } else { $bindints .= "interface: 0.0.0.0\n"; $bindints .= "interface: ::0\n"; } // Determine interfaces to run on $outgoingints = ""; if (!empty($config['unbound']['outgoing_interface'])) { $outgoingints = "# Outgoing interfaces to be used\n"; $outgoing_interfaces = explode(",", $config['unbound']['outgoing_interface']); foreach($outgoing_interfaces as $outif) { $outip = get_interface_ip($outif); if (!is_null($outip)) $outgoingints .= "outgoing-interface: $outip\n"; $outip = get_interface_ipv6($outif); if (!is_null($outip)) $outgoingints .= "outgoing-interface: $outip\n"; } } // Allow DNS Rebind for forwarded domains if ((isset($config['unbound']['domainoverrides']) && is_array($config['unbound']['domainoverrides'])) && !isset($config['system']['webgui']['nodnsrebindcheck'])) { $private_domains = "# Set private domains in case authoritative name server returns a Private IP address\n"; $private_domains .= unbound_add_domain_overrides(true); } // Configure static Host entries unbound_add_host_entries(); // Configure Domain Overrides unbound_add_domain_overrides(); // Configure Unbound statistics $statistics = unbound_statistics(); // Configure Unbound access-lists unbound_acls_config(); // Add custom Unbound options if ($config['unbound']['custom_options']) { $custom_options = "# Unbound custom option\n"; foreach (preg_split('/\s+/', $config['unbound']['custom_options']) as $ent) $custom_options .= $ent."\n"; } else { $custom_options = ""; } // Server configuration variables $port = (is_port($config['unbound']['port'])) ? $config['unbound']['port'] : "53"; $hide_id = ($config['unbound']['hide_id'] == "on") ? "yes" : "no"; $hide_version = ($config['unbound']['hide_version'] == "on") ? "yes" : "no"; $harden_glue = ($config['unbound']['harden_glue'] == "on") ? "yes" : "no"; $harden_dnssec_stripped = ($config['unbound']['harden_dnssec_stripped'] == "on") ? "yes" : "no"; $prefetch = ($config['unbound']['prefetch'] == "on") ? "yes" : "no"; $prefetch_key = ($config['unbound']['prefetch_key'] == "on") ? "yes" : "no"; $outgoing_num_tcp = (!empty($config['unbound']['outgoing_num_tcp'])) ? $config['unbound']['outgoing_num_tcp'] : "10"; $incoming_num_tcp = (!empty($config['unbound']['incoming_num_tcp'])) ? $config['unbound']['incoming_num_tcp'] : "10"; $edns_buffer_size = (!empty($config['unbound']['edns_buffer_size'])) ? $config['unbound']['edns_buffer_size'] : "4096"; $num_queries_per_thread = (!empty($config['unbound']['num_queries_per_thread'])) ? $config['unbound']['num_queries_per_thread'] : "4096"; $jostle_timeout = (!empty($config['unbound']['jostle_timeout'])) ? $config['unbound']['jostle_timeout'] : "200"; $cache_max_ttl = (!empty($config['unbound']['cache_max_ttl'])) ? $config['unbound']['cache_max_ttl'] : "86400"; $cache_min_ttl = (!empty($config['unbound']['cache_min_ttl'])) ? $config['unbound']['cache_min_ttl'] : "0"; $infra_host_ttl = (!empty($config['unbound']['infra_host_ttl'])) ? $config['unbound']['infra_host_ttl'] : "900"; $infra_lame_ttl = (!empty($config['unbound']['infra_lame_ttl'])) ? $config['unbound']['infra_lame_ttl'] : "900"; $infra_cache_numhosts = (!empty($config['unbound']['infra_cache_numhosts'])) ? $config['unbound']['infra_cache_numhosts'] : "10000"; $unwanted_reply_threshold = (!empty($config['unbound']['unwanted_reply_threshold'])) ? $config['unbound']['unwanted_reply_threshold'] : "0"; $verbosity = isset($config['unbound']['loglevel']) ? $config['unbound']['loglevel'] : 1; // Set up forwarding if it configured if (isset($config['unbound']['forwarding'])) { $dnsservers = array(); if (isset($config['system']['dnsallowoverride'])) { $ns = array_unique(get_nameservers()); foreach($ns as $nameserver) { if ($nameserver) $dnsservers[] = $nameserver; } } else { $ns = array_unique(get_dns_servers()); foreach($ns as $nameserver) { if ($nameserver) $dnsservers[] = $nameserver; } } if (!empty($dnsservers)) { $forward_conf .=<<<EOD # Forwarding forward-zone: name: "." EOD; foreach($dnsservers as $dnsserver) $forward_conf .= "\tforward-addr: $dnsserver\n"; } } else $forward_conf = ""; $unboundconf = <<<EOD ########################## # Unbound Configuration ########################## ## # Server configuration ## server: chroot: {$g['unbound_chroot_path']} username: "unbound" directory: "{$g['unbound_chroot_path']}" pidfile: "/var/run/unbound.pid" use-syslog: yes port: {$port} verbosity: {$verbosity} harden-referral-path: no do-ip4: yes do-ip6: yes do-udp: yes do-tcp: yes do-daemonize: yes module-config: "{$module_config}" unwanted-reply-threshold: 0 num-queries-per-thread: 1024 jostle-timeout: 200 infra-host-ttl: 900 infra-lame-ttl: 900 infra-cache-numhosts: 10000 outgoing-num-tcp: 10 incoming-num-tcp: 10 edns-buffer-size: 4096 cache-max-ttl: {$cache_max_ttl} cache-min-ttl: {$cache_min_ttl} harden-dnssec-stripped: yes {$optimization['number_threads']} {$optimization['msg_cache_slabs']} {$optimization['rrset_cache_slabs']} {$optimization['infra_cache_slabs']} {$optimization['key_cache_slabs']} {$optimization['msg_cache_size']} {$optimization['rrset_cache_size']} {$optimization['outgoing_range']} {$optimization['so_rcvbuf']} {$anchor_file} prefetch: {$prefetch} prefetch-key: {$prefetch_key} # Statistics {$statistics} # Interface IP(s) to bind to {$bindints} {$outgoingints} # DNS Rebinding {$private_addr} {$private_domains} # Access lists include: {$g['unbound_chroot_path']}/access_lists.conf # Static host entries include: {$g['unbound_chroot_path']}/host_entries.conf # Domain overrides include: {$g['unbound_chroot_path']}/domainoverrides.conf {$forward_conf} {$custom_options} ### # Remote Control Config ### include: {$g['unbound_chroot_path']}/remotecontrol.conf EOD; file_put_contents("{$g['unbound_chroot_path']}/unbound.conf", $unboundconf); return 0; } function unbound_remote_control_setup() { global $g; if (!file_exists("{$g['unbound_chroot_path']}/remotecontrol.conf") || !file_exists("{$g['unbound_chroot_path']}/unbound_control.key")) { $remotcfg = <<<EOF remote-control: control-enable: yes control-interface: 127.0.0.1 control-port: 953 server-key-file: "{$g['unbound_chroot_path']}/unbound_server.key" server-cert-file: "{$g['unbound_chroot_path']}/unbound_server.pem" control-key-file: "{$g['unbound_chroot_path']}/unbound_control.key" control-cert-file: "{$g['unbound_chroot_path']}/unbound_control.pem" EOF; file_put_contents("{$g['unbound_chroot_path']}/remotecontrol.conf", $remotcfg); // Generate our keys do_as_unbound_user("unbound-control-setup"); } } // Read /etc/hosts function read_hosts() { /* Open /etc/hosts and extract the only dhcpleases info * XXX - to convert to an unbound C library which reads /etc/hosts automatically */ $etc_hosts = array(); foreach (file('/etc/hosts') as $line) { $d = preg_split('/\s/', $line, -1, PREG_SPLIT_NO_EMPTY); if (empty($d) || substr(reset($d), 0, 1) == "#") continue; if ($d[3] == "#") { $ip = array_shift($d); $fqdn = array_shift($d); $name = array_shift($d); if ($fqdn != "empty") { if ($name != "empty") array_push($etc_hosts, array(ipaddr => "$ip", fqdn => "$fqdn", name => "$name")); else array_push($etc_hosts, array(ipaddr => "$ip", fqdn => "$fqdn")); } } } return $etc_hosts; } function sync_unbound_service() { global $config, $g; // Configure chroot if (!is_dir($g['unbound_chroot_path'])) { mkdir($g['unbound_chroot_path']); chown($g['unbound_chroot_path'], "unbound"); chgrp($g['unbound_chroot_path'], "unbound"); } // Configure our Unbound service do_as_unbound_user("unbound-anchor"); unbound_remote_control_setup(); unbound_generate_config(); do_as_unbound_user("start"); require_once("service-utils.inc"); if (is_service_running("unbound")) do_as_unbound_user("restore_cache"); } function unbound_acl_id_used($id) { global $config; if (is_array($config['unbound']['acls'])) foreach($config['unbound']['acls'] as & $acls) if ($id == $acls['aclid']) return true; return false; } function unbound_get_next_id() { $aclid = 0; while(unbound_acl_id_used($aclid)) $aclid++; return $aclid; } // Execute commands as the user unbound function do_as_unbound_user($cmd) { global $g; switch ($cmd) { case "start": mwexec("/usr/sbin/unbound -c {$g['unbound_chroot_path']}/unbound.conf"); break; case "stop": mwexec("chroot -u unbound -g unbound / /usr/sbin/unbound-control stop", true); break; case "unbound-anchor": mwexec("chroot -u unbound -g unbound / /usr/sbin/unbound-anchor -a {$g['unbound_chroot_path']}/root.key", true); break; case "unbound-control-setup": mwexec("chroot -u unbound -g unbound / /usr/sbin/unbound-control-setup -d {$g['unbound_chroot_path']}", true); break; default: break; } } function unbound_add_domain_overrides($pvt=false) { global $config, $g; $domains = $config['unbound']['domainoverrides']; $sorted_domains = msort($domains, "domain"); $result = array(); foreach($sorted_domains as $domain) { $domain_key = current($domain); if (!isset($result[$domain_key])) $result[$domain_key] = array(); $result[$domain_key][] = $domain['ip']; } // Domain overrides that have multiple entries need multiple stub-addr: added $domain_entries = ""; foreach($result as $domain=>$ips) { if ($pvt == true) { $domain_entries .= "private-domain: \"$domain\"\n"; $domain_entries .= "domain-insecure: \"$domain\"\n"; } else { $domain_entries .= "stub-zone:\n"; $domain_entries .= "\tname: \"$domain\"\n"; foreach($ips as $ip) $domain_entries .= "\tstub-addr: $ip\n"; $domain_entries .= "\tstub-prime: no\n"; } } if ($pvt == true) return $domain_entries; else file_put_contents("{$g['unbound_chroot_path']}/domainoverrides.conf", $domain_entries); } function unbound_add_host_entries() { global $config, $g; $unbound_entries = "local-zone: \"{$config['system']['domain']}\" transparent\n"; // IPv4 entries $unbound_entries .= "local-data-ptr: \"127.0.0.1 localhost\"\n"; $unbound_entries .= "local-data: \"localhost A 127.0.0.1\"\n"; $unbound_entries .= "local-data: \"localhost.{$config['system']['domain']} A 127.0.0.1\"\n"; // IPv6 entries $unbound_entries .= "local-data-ptr: \"::1 localhost\"\n"; $unbound_entries .= "local-data: \"localhost AAAA ::1\"\n"; $unbound_entries .= "local-data: \"localhost.{$config['system']['domain']} AAAA ::1\"\n"; $listen_addresses = ""; if (isset($config['unbound']['interface'])) { $interfaces = explode(",", $config['unbound']['interface']); foreach ($interfaces as $interface) { if (is_ipaddrv4($interface)) { $unbound_entries .= "local-data-ptr: \"{$interface} {$config['system']['hostname']}.{$config['system']['domain']}\"\n"; $unbound_entries .= "local-data: \"{$config['system']['hostname']}.{$config['system']['domain']} A {$interface}\"\n"; $unbound_entries .= "local-data: \"{$config['system']['hostname']} A {$interface}\"\n"; } else if (is_ipaddrv6($interface)) { $unbound_entries .= "local-data: \"{$config['system']['hostname']}.{$config['system']['domain']} AAAA {$interface}\"\n"; $unbound_entries .= "local-data: \"{$config['system']['hostname']} AAAA {$interface}\"\n"; } else { $if = get_real_interface($interface); if (does_interface_exist($if)) { $laddr = find_interface_ip($if); if (is_ipaddrv4($laddr)) { $unbound_entries .= "local-data-ptr: \"{$laddr} {$config['system']['hostname']}.{$config['system']['domain']}\"\n"; $unbound_entries .= "local-data: \"{$config['system']['hostname']}.{$config['system']['domain']} A {$laddr}\"\n"; $unbound_entries .= "local-data: \"{$config['system']['hostname']} A {$laddr}\"\n"; } $laddr6 = find_interface_ipv6($if); if (is_ipaddrv6($laddr6) && !isset($config['dnsmasq']['strictbind'])) { $unbound_entries .= "local-data-ptr: \"{$laddr6} {$config['system']['hostname']}.{$config['system']['domain']}\"\n"; $unbound_entries .= "local-data: \"{$config['system']['hostname']}.{$config['system']['domain']} AAAA {$laddr}\"\n"; $unbound_entries .= "local-data: \"{$config['system']['hostname']} AAAA {$laddr}\"\n"; } } } } } // Static Host entries if (isset($config['unbound']['hosts'])) { $host_entries = ""; $added_item = array(); foreach($config['unbound']['hosts'] as $host) { $current_host = $host['host']; if ($host['host'] != "") $host['host'] = $host['host']."."; if (!$added_item[$current_host]) { $host_entries .= "local-data-ptr: \"{$host['ip']} {$host['host']}{$host['domain']}\"\n"; if (is_ipaddrv6($host['ip'])) $host_entries .= "local-data: \"{$host['host']}{$host['domain']} IN AAAA {$host['ip']}\"\n"; else $host_entries .= "local-data: \"{$host['host']}{$host['domain']} IN A {$host['ip']}\"\n"; if (!empty($host['descr']) && isset($config['unbound']['txtsupport'])) $host_entries .= "local-data: '{$host['host']}{$host['domain']} TXT \"".addslashes($host['descr'])."\"'\n"; // Do not add duplicate entries $added_item[$current_host] = true; } } $unbound_entries .= $host_entries; } // Static DHCP entries $host_entries = ""; if (isset($config['unbound']['regdhcpstatic']) && is_array($config['dhcpd'])) { foreach ($config['dhcpd'] as $dhcpif => $dhcpifconf) if (is_array($dhcpifconf['staticmap']) && isset($dhcpifconf['enable'])) foreach ($dhcpifconf['staticmap'] as $host) if ($host['ipaddr'] && $host['hostname']) { $host_entries .= "local-data-ptr: \"{$host['ipaddr']} {$host['hostname']}.{$config['system']['domain']}\"\n"; $host_entries .= "local-data: \"{$host['hostname']}.{$config['system']['domain']} IN A {$host['ipaddr']}\"\n"; if (!empty($host['descr']) && $unboundcfg['txtsupport'] == 'on') $host_entries .= "local-data: '{$host['hostname']}.{$config['system']['domain']} TXT \"".addslashes($host['descr'])."\"'\n"; } $unbound_entries .= $host_entries; } // Handle DHCPLeases added host entries $dhcplcfg = read_hosts(); $host_entries = ""; if (is_array($dhcplcfg)) { foreach($dhcplcfg as $key=>$host) { $host_entries .= "local-data-ptr: \"{$host['ipaddr']} {$host['fqdn']}\"\n"; $host_entries .= "local-data: \"{$host['fqdn']} IN A {$host['ipaddr']}\"\n"; if (!empty($host['name'])) { $host_entries .= "local-data-ptr: \"{$host['ipaddr']} {$host['name']}\"\n"; $host_entries .= "local-data: \"{$host['name']} IN A {$host['ipaddr']}\"\n"; } } $unbound_entries .= $host_entries; } // Write out entries file_put_contents("{$g['unbound_chroot_path']}/host_entries.conf", $unbound_entries); } function unbound_control($action) { global $config, $g; $cache_dumpfile = "/var/tmp/unbound_cache"; switch ($action) { case "start": // Start Unbound if ($config['unbound']['enable'] == "on") { if (!is_service_running("unbound")) do_as_unbound_user("start"); } break; case "stop": if ($config['unbound']['enable'] == "on") do_as_unbound_user("stop"); break; case "reload": if ($config['unbound']['enable'] == "on") do_as_unbound_user("reload"); break; case "dump_cache": // Dump Unbound's Cache if ($config['unbound']['dumpcache'] == "on") do_as_unbound_user("dump_cache"); break; case "restore_cache": // Restore Unbound's Cache if ((is_service_running("unbound")) && ($config['unbound']['dumpcache'] == "on")) { if (file_exists($cache_dumpfile) && filesize($cache_dumpfile) > 0) do_as_unbound_user("load_cache < /var/tmp/unbound_cache"); } break; default: break; } } // Generation of Unbound statistics function unbound_statistics() { global $config; if ($config['stats'] == "on") { $stats_interval = $config['unbound']['stats_interval']; $cumulative_stats = $config['cumulative_stats']; if ($config['extended_stats'] == "on") $extended_stats = "yes"; else $extended_stats = "no"; } else { $stats_interval = "0"; $cumulative_stats = "no"; $extended_stats = "no"; } /* XXX To do - add RRD graphs */ $stats = <<<EOF # Unbound Statistics statistics-interval: {$stats_interval} extended-statistics: yes statistics-cumulative: yes EOF; return $stats; } // Unbound Access lists function unbound_acls_config() { global $g, $config; $aclcfg = "access-control: 127.0.0.1/32 allow\n"; $aclcfg .= "access-control: ::1 allow\n"; // Add our networks for active interfaces including localhost if (!empty($config['unbound']['active_interface'])) $active_interfaces = array_flip(explode(",", $config['unbound']['active_interface'])); else $active_interfaces = get_configured_interface_with_descr(); $bindints = ""; foreach($active_interfaces as $ubif => $ifdesc) { $ifip = get_interface_ip($ubif); if (!is_null($ifip)) { $subnet_bits = get_interface_subnet($ubif); $subnet_ip = gen_subnet($ifip, $subnet_bits); $aclcfg .= "access-control: {$subnet_ip}/{$subnet_bits} allow\n"; } $ifip = get_interface_ipv6($ubif); if (!is_null($ifip)) { $subnet_bits = get_interface_subnetv6($ubif); $subnet_ip = gen_subnetv6($ifip, $subnet_bits); $aclcfg .= "access-control: {$subnet_ip}/{$subnet_bits} allow\n"; } } // Configure the custom ACLs if (is_array($config['unbound']['acls'])) { foreach($config['unbound']['acls'] as $unbound_acl) { $aclcfg .= "#{$unbound_acl['aclname']}\n"; foreach($unbound_acl['row'] as $network) { if ($unbound_acl['aclaction'] == "allow snoop") $unbound_acl['aclaction'] = "allow_snoop"; $aclcfg .= "access-control: {$network['acl_network']}/{$network['mask']} {$unbound_acl['aclaction']}\n"; } } } // Write out Access list file_put_contents("{$g['unbound_chroot_path']}/access_lists.conf", $aclcfg); } // Generate hosts and reload services function unbound_hosts_generate() { // Generate our hosts file unbound_add_host_entries(); // Reload our service to read the updates unbound_control("reload"); } ?>