ipsec.inc 51.1 KB
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<?php
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/*
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    Copyright (C) 2008 Shrew Soft Inc
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    Copyright (C) 2008 Ermal Luçi
    Copyright (C) 2004-2007 Scott Ullrich
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    Copyright (C) 2003-2004 Manuel Kasper
    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.
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*/

/* IPsec defines */
$ipsec_loglevels = array("dmn" => "Daemon", "mgr" => "SA Manager", "ike" => "IKE SA", "chd" => "IKE Child SA",
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    "job" => "Job Processing", "cfg" => "Configuration backend", "knl" => "Kernel Interface",
    "net" => "Networking", "asn" => "ASN encoding", "enc" => "Message encoding",
    "imc" => "Integrity checker", "imv" => "Integrity Verifier", "pts" => "Platform Trust Service",
    "tls" => "TLS handler", "esp" => "IPsec traffic", "lib" => "StrongSWAN Lib"
);
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$p1_ealgos = array(
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    'aes' => array( 'name' => 'AES', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
    'aes128gcm' => array( 'name' => 'AES128-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
    'aes192gcm' => array( 'name' => 'AES192-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
    'aes256gcm' => array( 'name' => 'AES256-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
    'blowfish' => array( 'name' => 'Blowfish', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
    '3des' => array( 'name' => '3DES' ),
    'cast128' => array( 'name' => 'CAST128' ),
    'des' => array( 'name' => 'DES' )
);
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$p2_ealgos = array(
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    'aes' => array( 'name' => 'AES', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
    'aes128gcm' => array( 'name' => 'AES128-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
    'aes192gcm' => array( 'name' => 'AES192-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
    'aes256gcm' => array( 'name' => 'AES256-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
    'blowfish' => array( 'name' => 'Blowfish', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
    '3des' => array( 'name' => '3DES' ),
    'cast128' => array( 'name' => 'CAST128' ),
    'des' => array( 'name' => 'DES' )
);
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$p2_halgos = array(
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    'hmac_md5' => 'MD5',
    'hmac_sha1' => 'SHA1',
    'hmac_sha256' => 'SHA256',
    'hmac_sha384' => 'SHA384',
    'hmac_sha512' => 'SHA512',
    'aesxcbc' => 'AES-XCBC'
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);


$p2_protos = array(
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    'esp' => 'ESP',
    'ah' => 'AH'
);
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$p2_pfskeygroups = array(
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    0 => 'off',
    1  => '1 (768 bit)',
    2  => '2 (1024 bit)',
    5  => '5 (1536 bit)',
    14 => '14 (2048 bit)',
    15 => '15 (3072 bit)',
    16 => '16 (4096 bit)',
    17 => '17 (6144 bit)',
    18 => '18 (8192 bit)'
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);

/*
 * Return phase1 local address
 */
function ipsec_get_phase1_src(& $ph1ent) {
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    if (!empty($ph1ent['interface'])) {
        if (!is_ipaddr($ph1ent['interface'])) {
          if (strpos($ph1ent['interface'],'_vip') !== false) {
              // if this is a vip, set the interface to $ph1ent['interface']
              $if = $ph1ent['interface'];
          } else {
              // not a vip, check failover interface
              if ($ph1ent['protocol'] == "inet6") {
                  $if = get_failover_interface($ph1ent['interface'], "inet6");
              } else {
                  $if = get_failover_interface($ph1ent['interface']);
              }
          }
        } else {
            // interface is an ip address, return
            return $ph1ent['interface'];
        }
    } else {
        $if = "wan";
    }
    if ($ph1ent['protocol'] == "inet6") {
        return get_interface_ipv6($if);
    } else {
        return get_interface_ip($if);
    }
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}


/*
 * Return phase2 idinfo in cidr format
 */
function ipsec_idinfo_to_cidr(& $idinfo, $addrbits = false, $mode = "") {
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    global $config;

    switch ($idinfo['type']) {
        case "address":
            if ($addrbits) {
                if ($mode == "tunnel6") {
                    return $idinfo['address']."/128";
                } else {
                    return $idinfo['address']."/32";
                }
            } else {
                return $idinfo['address'];
            }
            break; /* NOTREACHED */
        case "network":
            return "{$idinfo['address']}/{$idinfo['netbits']}";
            break; /* NOTREACHED */
        case "none":
        case "mobile":
            return "0.0.0.0/0";
            break; /* NOTREACHED */
        default:
          if (empty($mode) && !empty($idinfo['mode'])) {
              $mode = $idinfo['mode'];
          }

          if ($mode == "tunnel6") {
              $address = get_interface_ipv6($idinfo['type']);
              $netbits = get_interface_subnetv6($idinfo['type']);
              $address = gen_subnetv6($address,$netbits);
              return "{$address}/{$netbits}";
          } else {
              $address = get_interface_ip($idinfo['type']);
              $netbits = get_interface_subnet($idinfo['type']);
              $address = gen_subnet($address,$netbits);
              return "{$address}/{$netbits}";
          }
          break; /* NOTREACHED */
    }
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}


/*
 * Return phase1 association for phase2
 */
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function ipsec_lookup_phase1(&$ph2ent, &$ph1ent)
{
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    global $config;

    if (!isset($config['ipsec']) || !is_array($config['ipsec'])) {
        return false;
    }
    if (!is_array($config['ipsec']['phase1'])) {
        return false;
    }
    if (empty($config['ipsec']['phase1'])) {
        return false;
    }

    foreach ($config['ipsec']['phase1'] as $ph1tmp) {
        if ($ph1tmp['ikeid'] == $ph2ent['ikeid']) {
            $ph1ent = $ph1tmp;
            return $ph1ent;
        }
    }

    return false;
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}

/*
 * Check phase1 communications status
 */
function ipsec_phase1_status($ipsec_status, $ikeid) {
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    foreach ($ipsec_status as $ike) {
        if ($ike['id'] != $ikeid) {
            continue;
        }
        if ($ike['status'] == 'established') {
            return true;
        }
        break;
    }

    return false;
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}

/*
 * Return dump of SPD table
 */
function ipsec_dump_spd()
{
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    $fd = @popen("/sbin/setkey -DP", "r");
    $spd = array();
    if ($fd) {
        while (!feof($fd)) {
            $line = chop(fgets($fd));
            if (!$line) {
                continue;
            }
            if ($line == "No SPD entries.") {
                break;
            }
            if ($line[0] != "\t") {
                if (isset($cursp)) {
                    $spd[] = $cursp;
                }
                $cursp = array();
                $linea = explode(" ", $line);
                $cursp['srcid'] = substr($linea[0], 0, strpos($linea[0], "["));
                $cursp['dstid'] = substr($linea[1], 0, strpos($linea[1], "["));
                $i = 0;
            } elseif (isset($cursp)) {
                $linea = explode(" ", trim($line));
                switch($i) {
                    case 1:
                        if ($linea[1] == "none")  { /* don't show default anti-lockout rule */
                            unset($cursp);
                        } else {
                            $cursp['dir'] = $linea[0];
                        }
                        break;
                    case 2:
                        $upperspec = explode("/", $linea[0]);
                        $cursp['proto'] = $upperspec[0];
                        list($cursp['src'], $cursp['dst']) = explode("-", $upperspec[2]);
                        $cursp['reqid'] =  substr($upperspec[3], strpos($upperspec[3], "#")+1);
                        break;
                }
            }
            $i++;
        }
        if (isset($cursp) && count($cursp)) {
            $spd[] = $cursp;
        }
        pclose($fd);
    }

    return $spd;
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}

/*
 * Return dump of SAD table
 */
function ipsec_dump_sad()
{
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    $fd = @popen("/sbin/setkey -D", "r");
    $sad = array();
    if ($fd) {
        while (!feof($fd)) {
            $line = chop(fgets($fd));
            if (!$line || $line[0] == " ") {
                continue;
            }
            if ($line == "No SAD entries.") {
                break;
            }
            if ($line[0] != "\t") {
                if (is_array($cursa)) {
                    $sad[] = $cursa;
                }
                $cursa = array();
                list($cursa['src'],$cursa['dst']) = explode(" ", $line);
                $i = 0;
            } else {
                $linea = explode(" ", trim($line));
                switch ($i) {
                    case 1:
                        $cursa['proto'] = $linea[0];
                        $cursa['spi'] = substr($linea[2], strpos($linea[2], "x")+1, -1);
                        $reqid = substr($linea[3], strpos($linea[3], "=")+1);
                        $cursa['reqid'] = substr($reqid, 0, strcspn($reqid,"("));
                        break;
                    case 2:
                        $cursa['ealgo'] = $linea[1];
                        break;
                    case 3:
                        $cursa['aalgo'] = $linea[1];
                        break;
                    case 8:
                        $sadata = explode("(", $linea[1]);
                        $cursa['data'] = $sadata[0] . " B";
                        break;
                }
            }
            $i++;
        }
        if (is_array($cursa) && count($cursa)) {
            $sad[] = $cursa;
        }
        pclose($fd);
    }

    return $sad;
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}

function ipsec_mobilekey_sort() {
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    global $config;
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    function mobilekeycmp($a, $b) {
        return strcmp($a['ident'][0], $b['ident'][0]);
    }
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    usort($config['ipsec']['mobilekey'], "mobilekeycmp");
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}

function ipsec_get_number_of_phase2($ikeid) {
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    global $config;
    $a_phase2 = $config['ipsec']['phase2'];
    $nbph2=0;
    if (is_array($a_phase2) && count($a_phase2)) {
        foreach ($a_phase2 as $ph2tmp) {
            if ($ph2tmp['ikeid'] == $ikeid) {
                $nbph2++;
            }
        }
    }
    return $nbph2;
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}


function ipsec_find_id(& $ph1ent, $side = "local", $rgmap = array()) {
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    $id_data = null;
    if ($side == "local") {
        $id_type = $ph1ent['myid_type'];
        if (isset($ph1ent['myid_data'])) {
            $id_data = $ph1ent['myid_data'];
        }

        $addr = ipsec_get_phase1_src($ph1ent);
        if (!$addr) {
            return array();
        }
    } elseif ($side == "peer") {
        $id_type = $ph1ent['peerid_type'];
        if (isset($ph1ent['peerid_data'])) {
            $id_data = $ph1ent['peerid_data'];
        }

        if (isset($ph1ent['mobile'])) {
            $addr = "%any";
        } else {
            $addr = $ph1ent['remote-gateway'];
        }
    } else {
        return array();
    }

    $thisid_type = $id_type;
    switch ($thisid_type) {
        case "myaddress":
            $thisid_type = "address";
            $thisid_data = $addr;
            break;
        case "dyn_dns":
            $thisid_type = "address";
            $thisid_data = resolve_retry($id_data);
            break;
        case "peeraddress":
            $thisid_type = "address";
            $thisid_data = $rgmap[$ph1ent['remote-gateway']];
            break;
        case "address";
            $thisid_data = $id_data;
            break;
        case "fqdn";
        case "keyid tag";
        case "user_fqdn";
        case "asn1dn";
            $thisid_data = $id_data;
            if( $thisid_data ) {
                $thisid_data = "{$thisid_data}";
            }
            break;
    }
    return array($thisid_type, $thisid_data);
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}
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/* include all configuration functions */
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function ipsec_convert_to_modp($index)
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{
    $convertion = "";
    switch ($index) {
        case '1':
            $convertion = "modp768";
            break;
        case '2':
            $convertion = "modp1024";
            break;
        case '5':
            $convertion = "modp1536";
            break;
        case '14':
            $convertion = "modp2048";
            break;
        case '15':
            $convertion = "modp3072";
            break;
        case '16':
            $convertion = "modp4096";
            break;
        case '17':
            $convertion = "modp6144";
            break;
        case '18':
            $convertion = "modp8192";
            break;
    }

    return $convertion;
}

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function ipsec_configure()
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{
    global $config, $p2_ealgos, $ipsec_loglevels;

    /* get the automatic ping_hosts.sh ready */
    @unlink('/var/db/ipsecpinghosts');
    touch('/var/db/ipsecpinghosts');

    //  Prefer older IPsec SAs (advanced setting)
    if (isset($config['ipsec']['preferoldsa'])) {
        set_single_sysctl("net.key.preferred_oldsa", "-30");
    } else {
        set_single_sysctl("net.key.preferred_oldsa", "0");
    }

    $syscfg = $config['system'];
    $ipseccfg = $config['ipsec'];
    $a_phase1 = isset($config['ipsec']['phase1']) ? $config['ipsec']['phase1'] : array();
    $a_phase2 = isset($config['ipsec']['phase2']) ? $config['ipsec']['phase2'] : array();
    $a_client = isset($config['ipsec']['client']) ? $config['ipsec']['client'] : array();
    $aggressive_psk = false ; // if one of the phase 1 entries has aggressive/psk combination, this will be set true

    if (!isset($ipseccfg['enable'])) {
        /* try to stop charon */
        mwexec('/usr/local/sbin/ipsec stop');
        /* Stop dynamic monitoring */
        killbypid('/var/run/filterdns-ipsec.pid');

        /* wait for process to die */
        sleep(2);

        /* disallow IPSEC, it is off */
        mwexec("/sbin/ifconfig enc0 down");
        set_single_sysctl("net.inet.ip.ipsec_in_use", "0");

        return 0;
    } else {
        $certpath = "/usr/local/etc/ipsec.d/certs";
        $capath = "/usr/local/etc/ipsec.d/cacerts";
        $keypath = "/usr/local/etc/ipsec.d/private";

        mwexec("/sbin/ifconfig enc0 up");
        set_single_sysctl("net.inet.ip.ipsec_in_use", "1");

        /* needed directories for config files */
        @mkdir($capath);
        @mkdir($keypath);
        @mkdir($certpath);
        @mkdir('/usr/local/etc/ipsec.d');
        @mkdir('/usr/local/etc/ipsec.d/crls');
        @mkdir('/usr/local/etc/ipsec.d/aacerts');
        @mkdir('/usr/local/etc/ipsec.d/acerts');
        @mkdir('/usr/local/etc/ipsec.d/ocspcerts');
        @mkdir('/usr/local/etc/ipsec.d/reqs');

        if (file_exists("/var/run/booting")) {
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            echo gettext("Configuring IPsec VPN...");
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        }

        /* fastforwarding is not compatible with ipsec tunnels */
        set_single_sysctl("net.inet.ip.fastforwarding", "0");

        /* resolve all local, peer addresses and setup pings */
        $ipmap = array();
        $rgmap = array();
        $filterdns_list = array();
        $ipsecpinghosts = "";
        /* step through each phase1 entry */
        foreach ($a_phase1 as $ph1ent) {
            if (isset($ph1ent['disabled'])) {
                continue;
            }

            if ($ph1ent['mode'] == "aggressive" && in_array($ph1ent['authentication_method'], array("pre_shared_key", "xauth_psk_server"))) {
                $aggressive_psk = true;
            }
            $ep = ipsec_get_phase1_src($ph1ent);
            if (!is_ipaddr($ep)) {
                continue;
            }


            if(!in_array($ep,$ipmap)) {
                $ipmap[] = $ep;
            }

            /* see if this tunnel has a hostname for the remote-gateway. If so,
               try to resolve it now and add it to the list for filterdns */

            if (isset ($ph1ent['mobile'])) {
                continue;
            }

            $rg = $ph1ent['remote-gateway'];

            if (!is_ipaddr($rg)) {
                $filterdns_list[] = "{$rg}";
                add_hostname_to_watch($rg);
                if(! file_exists("/var/run/booting")) {
                    $rg = resolve_retry($rg);
                }
                if (!is_ipaddr($rg)) {
                    continue;
                }
            }
            if(array_search($rg, $rgmap)) {
                log_error("The remote gateway {$rg} already exists on another phase 1 entry");
                continue;
            }
            $rgmap[$ph1ent['remote-gateway']] = $rg;

            /* step through each phase2 entry */
            foreach ($a_phase2 as $ph2ent) {
                if (isset($ph2ent['disabled'])) {
                    continue;
                }

                if ($ph1ent['ikeid'] != $ph2ent['ikeid']) {
                    continue;
                }

                /* add an ipsec pinghosts entry */
                if ($ph2ent['pinghost']) {
                    if (!isset($iflist) || !is_array($iflist)) {
                        $iflist = get_configured_interface_list();
                    }
                    $viplist = get_configured_vips_list();
                    $srcip = null;
                    $local_subnet = ipsec_idinfo_to_cidr($ph2ent['localid'], true, $ph2ent['mode']);
                    if(is_ipaddrv6($ph2ent['pinghost'])) {
                        foreach ($iflist as $ifent => $ifname) {
                            $interface_ip = get_interface_ipv6($ifent);
                            if (!is_ipaddrv6($interface_ip)) {
                                continue;
                            }
                            if (ip_in_subnet($interface_ip, $local_subnet)) {
                                $srcip = $interface_ip;
                                break;
                            }
                        }
                    } else {
                        foreach ($iflist as $ifent => $ifname) {
                            $interface_ip = get_interface_ip($ifent);
                            if (!is_ipaddrv4($interface_ip)) {
                                continue;
                            }
                            if ($local_subnet == "0.0.0.0/0" || ip_in_subnet($interface_ip, $local_subnet)) {
                                $srcip = $interface_ip;
                                break;
                            }
                        }
                    }
                    /* if no valid src IP was found in configured interfaces, try the vips */
                    if (is_null($srcip)) {
                        foreach ($viplist as $vip) {
                            if (ip_in_subnet($vip['ipaddr'], $local_subnet)) {
                                $srcip = $vip['ipaddr'];
                                break;
                            }
                        }
                    }
                    $dstip = $ph2ent['pinghost'];
                    if(is_ipaddrv6($dstip)) {
                        $family = "inet6";
                    } else {
                        $family = "inet";
                    }
                    if (is_ipaddr($srcip)) {
                        $ipsecpinghosts[] = "{$srcip}|{$dstip}|3|||||{$family}|\n";
                    }
                }
            }
        }
        @file_put_contents('/var/db/ipsecpinghosts', $ipsecpinghosts);

        $cnf_add_to_charon_section = "";
        $cnf_add_to_charon_section .= $aggressive_psk ? "\ti_dont_care_about_security_and_use_aggressive_mode_psk=yes\n":"";
        if (isset($a_client['enable']) && isset($a_client['net_list'])) {
            $cnf_add_to_charon_section .= "\tcisco_unity = yes\n";
        }

        $strongswan = <<<EOD

#Automatically generated please do not modify
starter {
    load_warning = no
}

charon {

    # number of worker threads in charon
    threads = 16
    ikesa_table_size = 32
    ikesa_table_segments = 4
    init_limit_half_open = 1000;
{$cnf_add_to_charon_section}
    # And two loggers using syslog. The subsections define the facility to log
    # to, currently one of: daemon, auth.
    syslog {
      identifier = charon
      # default level to the LOG_DAEMON facility
      daemon {
      }
      # very minimalistic IKE auditing logs to LOG_AUTHPRIV
      auth {
        default = -1
        ike = 1
        ike_name = yes
      }
    }
EOD;

        $strongswan .= "\tplugins {\n";

        if (isset($a_client['enable'])) {
            $strongswan .= "\t\tattr {\n";
            if ($a_client['pool_address'] && $a_client['pool_netbits']) {
                $strongswan .= "\t\tsubnet = {$a_client['pool_address']}/{$a_client['pool_netbits']}\n";
            }
            $cfgservers = array();
            foreach (array('dns_server1', 'dns_server2', 'dns_server3', 'dns_server4') as $dns_server) {
                if (!empty($a_client[$dns_server])) {
                    $cfgservers[] = $a_client[$dns_server];
                }
            }
            if (!empty($cfgservers)) {
                $strongswan .= "\t\tdns = " . implode(",", $cfgservers) . "\n";
            }
            unset($cfgservers);
            $cfgservers = array();
            if (!empty($a_client['wins_server1'])) {
                $cfgservers[] = $a_client['wins_server1'];
            }
            if (!empty($a_client['wins_server2'])) {
                $cfgservers[] = $a_client['wins_server2'];
            }
            if (!empty($cfgservers)) {
                $strongswan .= "\t\tnbns = " . implode(",", $cfgservers) . "\n";
            }
            unset($cfgservers);

            if (isset($a_client['net_list'])) {
                $net_list = '';
                foreach ($a_phase2 as $ph2ent) {
                    if (isset($ph2ent['disabled'])) {
                        continue;
                    }
                    if (!isset($ph2ent['mobile'])) {
                        continue;
                    }
                    $localid = ipsec_idinfo_to_cidr($ph2ent['localid'], true, $ph2ent['mode']);
                    if (!empty($net_list)) {
                        $net_list .= ",";
                    }
                    $net_list .= $localid;
                }

                if (!empty($net_list)) {
                    $strongswan .= "\t\tsplit-include = {$net_list}\n";
                    unset($net_list);
                }
            }

            if (!empty($a_client['dns_domain'])) {
                $strongswan .= "\t\t# Search domain and default domain\n";
                $strongswan .= "\t\t28674 = {$a_client['dns_domain']}\n";
                if (empty($a_client['dns_split'])) {
                    $strongswan .= "\t\t28675 = {$a_client['dns_domain']}";
                }
                $strongswan .= "\n";
            }

            if (!empty($a_client['dns_split'])) {
                $strongswan .= "\t\t28675 = {$a_client['dns_split']}\n";
            }

            if (!empty($a_client['login_banner'])) {
                $strongswan .= "\t\t28672 = {$a_client['login_banner']}\n";
            }

            if (isset($a_client['save_passwd'])) {
                $strongswan .= "\t\t28673 = yes\n";
            }

            if (!empty($a_client['pfs_group'])) {
                $strongswan .= "\t\t28679 = {$a_client['pfs_group']}\n";
            }
            $strongswan .= "\t\t}\n";

            if ($a_client['user_source'] != "none") {
                $strongswan .= "\txauth-generic {\n";
                $strongswan .= "\t\tscript = /usr/local/etc/inc/ipsec.auth-user.php\n";
                $strongswan .= "\t\tauthcfg = ";
                $firstsed = 0;
                $authcfgs = explode(",", $a_client['user_source']);
                foreach ($authcfgs as $authcfg) {
                    if ($firstsed > 0) {
                        $strongswan .= ",";
                    }
                    if ($authcfg == "system") {
                        $authcfg = "Local Database";
                    }
                    $strongswan .= $authcfg;
                    $firstsed = 1;
                }
                $strongswan .= "\n";
                $strongswan .= "\t}\n";
            }
        }

        $strongswan .= "\t}\n}\n";
        @file_put_contents("/usr/local/etc/strongswan.conf", $strongswan);
        unset($strongswan);

        /* generate CA certificates files */
        if (isset($config['ca'])) {
            foreach ($config['ca'] as $ca) {
                if (!isset($ca['crt'])) {
                    log_error(sprintf(gettext("Error: Invalid certificate info for %s"), $ca['descr']));
                    continue;
                }
                $cert = base64_decode($ca['crt']);
                $x509cert = openssl_x509_parse(openssl_x509_read($cert));
                if (!is_array($x509cert) || !isset($x509cert['hash'])) {
                    log_error(sprintf(gettext("Error: Invalid certificate hash info for %s"), $ca['descr']));
                    continue;
                }
                $fname = "{$capath}/{$x509cert['hash']}.0.crt";
                if (!@file_put_contents($fname, $cert)) {
                    log_error(sprintf(gettext("Error: Cannot write IPsec CA file for %s"), $ca['descr']));
                    continue;
                }
                unset($cert);
            }
        }

        $pskconf = "";

        foreach ($a_phase1 as $ph1ent) {
            if (isset($ph1ent['disabled'])) {
                continue;
            }

            if (!empty($ph1ent['certref'])) {
                $cert = lookup_cert($ph1ent['certref']);

                if (empty($cert)) {
                    log_error(sprintf(gettext("Error: Invalid phase1 certificate reference for %s"), $ph1ent['name']));
                    continue;
                }

                @chmod($certpath, 0600);

                $ph1keyfile = "{$keypath}/cert-{$ph1ent['ikeid']}.key";
                if (!file_put_contents($ph1keyfile, base64_decode($cert['prv']))) {
                    log_error(sprintf(gettext("Error: Cannot write phase1 key file for %s"), $ph1ent['name']));
                    continue;
                }
                @chmod($ph1keyfile, 0600);

                $ph1certfile = "{$certpath}/cert-{$ph1ent['ikeid']}.crt";
                if (!file_put_contents($ph1certfile, base64_decode($cert['crt']))) {
                    log_error(sprintf(gettext("Error: Cannot write phase1 certificate file for %s"), $ph1ent['name']));
                    @unlink($ph1keyfile);
                    continue;
                }
                @chmod($ph1certfile, 0600);

                /* XXX" Traffic selectors? */
                $pskconf .= " : RSA {$ph1keyfile}\n";
            } else {
                list ($myid_type, $myid_data) = ipsec_find_id($ph1ent, "local");
                list ($peerid_type, $peerid_data) = ipsec_find_id($ph1ent, "peer", $rgmap);

                if (empty($peerid_data)) {
                    continue;
                }

                $myid = isset($ph1ent['mobile']) ? trim($myid_data) . " " : "";
                $peerid = ($peerid_data != "allusers") ? trim($peerid_data) : "";
                if (!empty($ph1ent['pre-shared-key'])) {
                    $pskconf .= $myid . $peerid . " : PSK \"" . trim($ph1ent['pre-shared-key']) . "\"\n";
                }
            }
        }

        /* Add user PSKs */
        if (isset($config['system']['user']) && is_array($config['system']['user'])) {
            foreach ($config['system']['user'] as $user) {
                if (!empty($user['ipsecpsk'])) {
                    $pskconf .= "{$user['name']} : PSK \"{$user['ipsecpsk']}\"\n";
                }
            }
            unset($user);
        }

        /* add PSKs for mobile clients */
        if (isset($ipseccfg['mobilekey'])) {
            foreach ($ipseccfg['mobilekey'] as $key) {
                if ($key['ident'] == "allusers") {
                    $key['ident'] = '';
                }
                $pskconf .= "{$key['ident']} : PSK \"{$key['pre-shared-key']}\"\n";
            }
            unset($key);
        }

        @file_put_contents("/usr/local/etc/ipsec.secrets", $pskconf);
        chmod("/usr/local/etc/ipsec.secrets", 0600);
        unset($pskconf);

        $natfilterrules = false;
        /* begin ipsec.conf */
        $ipsecconf = "";
        if (count($a_phase1))  {
            $ipsecconf .= "# This file is automatically generated. Do not edit\n";
            $ipsecconf .= "config setup\n\tuniqueids = yes\n";
            // parse debug tags
            $cfg_loglevels = array();
            if (isset($ipsec_loglevels)) {
                foreach ($ipsec_loglevels as $lkey => $ldescr) {
                    if (isset($config['ipsec']["ipsec_{$lkey}"]) && is_numeric($config['ipsec']["ipsec_{$lkey}"]) &&
                      intval($config['ipsec']["ipsec_{$lkey}"]) >= 1 && intval($config['ipsec']["ipsec_{$lkey}"]) <= 5) {
                          $cfg_loglevels[] = "${lkey} " . (intval($config['ipsec']["ipsec_{$lkey}"]) - 1) ;
                    }
                }
            }
            $ipsecconf .= "\tcharondebug=\"" .implode(',', $cfg_loglevels) . "\"\n";

            foreach ($a_phase1 as $ph1ent) {
                if (isset($ph1ent['disabled'])) {
                    continue;
                }

                if ($ph1ent['mode'] == "aggressive") {
                    $aggressive = "yes";
                } else {
                    $aggressive = "no";
                }

                $ep = ipsec_get_phase1_src($ph1ent);
                if (empty($ep)) {
                    continue;
                }

                $keyexchange = "ikev1";
                if (!empty($ph1ent['iketype']) && $ph1ent['iketype'] != "ikev1") {
                    $keyexchange = "ikev2";
                }

                if (isset($ph1ent['mobile'])) {
                    $right_spec = "%any";
                } else {
                    $right_spec = $ph1ent['remote-gateway'];
                }

                if (!empty($ph1ent['auto'])) {
                    $conn_auto = $ph1ent['auto'];
                } elseif (isset($ph1ent['mobile'])) {
                    $conn_auto = 'add';
                } else {
                    $conn_auto = 'route';
                }

                list ($myid_type, $myid_data) = ipsec_find_id($ph1ent, "local");
                list ($peerid_type, $peerid_data) = ipsec_find_id($ph1ent, "peer", $rgmap);

                /* Only specify peer ID if we are not dealing with a mobile PSK-only tunnel */
                $peerid_spec = '';
                if (!isset($ph1ent['mobile'])) {
                    $peerid_spec = $peerid_data;
                }

                if (!empty($ph1ent['encryption-algorithm']['name']) && !empty($ph1ent['hash-algorithm'])) {
                    $ealg_id = $ph1ent['encryption-algorithm']['name'];
                    if (isset($ph1ent['encryption-algorithm']['keylen'])){
                        $ealgosp1 = "ike = {$ealg_id}{$ph1ent['encryption-algorithm']['keylen']}-{$ph1ent['hash-algorithm']}";
                    } else {
                        $ealgosp1 = "ike = {$ealg_id}-{$ph1ent['hash-algorithm']}";
                    }
916
                    $modp = ipsec_convert_to_modp($ph1ent['dhgroup']);
917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
                    if (!empty($modp)) {
                        $ealgosp1 .= "-{$modp}";
                    }
                    $ealgosp1 .= "!";
                }

                if (!empty($ph1ent['dpd_delay']) && !empty($ph1ent['dpd_maxfail'])) {
                    if ($conn_auto == "route") {
                        $dpdline = "dpdaction = restart";
                    } else {
                        $dpdline = "dpdaction = clear";
                    }
                    $dpdline .= "\n\tdpddelay = {$ph1ent['dpd_delay']}s";
                    $dpdtimeout = $ph1ent['dpd_delay'] * ($ph1ent['dpd_maxfail'] + 1);
                    $dpdline .= "\n\tdpdtimeout = {$dpdtimeout}s";
                } else {
                    $dpdline = "dpdaction = none";
                }

                if (!empty($ph1ent['lifetime'])) {
                    $ikelifeline = "ikelifetime = {$ph1ent['lifetime']}s";
                } else {
                    $ikelifeline = '';
                }

                $rightsourceip = NULL;
                if (!empty($a_client['pool_address']) && isset($ph1ent['mobile']) ) {
                    $rightsourceip = "\trightsourceip = {$a_client['pool_address']}/{$a_client['pool_netbits']}\n";
                }

                $authentication = "";
                switch ($ph1ent['authentication_method']) {
                    case 'eap-tls':
                        $authentication = "leftauth=eap-tls\n\trightauth=eap-tls";
                        break;
                    case 'xauth_rsa_server':
                        $authentication = "leftauth = pubkey\n\trightauth = pubkey";
                        $authentication .= "\n\trightauth2 = xauth-generic";
                        break;
                    case 'xauth_psk_server':
                        $authentication = "leftauth = psk\n\trightauth = psk";
                        $authentication .= "\n\trightauth2 = xauth-generic";
                        break;
                    case 'pre_shared_key':
                        $authentication = "leftauth = psk\n\trightauth = psk";
                        break;
                    case 'rsasig':
                        $authentication = "leftauth = pubkey\n\trightauth = pubkey";
                        break;
                    case 'hybrid_rsa_server':
                        $authentication = "leftauth = xauth-generic\n\trightauth = pubkey";
                        $authentication .= "\n\trightauth2 = xauth";
                        break;
                }
                if (!empty($ph1ent['certref'])) {
                    $authentication .= "\n\tleftcert={$certpath}/cert-{$ph1ent['ikeid']}.crt";
                }
                if (!empty($ph1ent['caref'])) {
                    $ca = lookup_ca($ph1ent['caref']);;
                    if (!empty($ca)) {
                         $rightca = "";
                         foreach (cert_get_subject_array($ca['crt']) as $ca_field) {
                            $rightca .= "{$ca_field['a']}={$ca_field['v']}/";
                         }
                         $authentication .= "\n\trightca=\"/$rightca\"";
                    }
                }
                $left_spec = $ep;

                if (isset($ph1ent['reauth_enable'])) {
                    $reauth = "reauth = no";
                } else {
                    $reauth = "reauth = yes";
                }

                if (isset($ph1ent['rekey_enable'])) {
                    $rekey = "rekey = no";
                } else {
                    $rekey = "rekey = yes";
                }

                $forceencaps = 'forceencaps = no' ;
                if (!empty($ph1ent['nat_traversal']) && $ph1ent['nat_traversal'] == 'force') {
                    $forceencaps = 'forceencaps = yes';
                }

                $ipseclifetime = 0;
                $rightsubnet_spec = array();
                $leftsubnet_spec = array();
                $ealgoAHsp2arr = array();
                $ealgoESPsp2arr = array();


                if (count($a_phase2)) {
                    foreach ($a_phase2 as $ph2ent) {
                        if ($ph1ent['ikeid'] != $ph2ent['ikeid'] || isset($ph2ent['disabled'])) {
                            continue;
                        }
                        if (isset($ph2ent['mobile']) && !isset($a_client['enable'])){
                            continue;
                        }

                        if (($ph2ent['mode'] == 'tunnel') or ($ph2ent['mode'] == 'tunnel6')) {
                            $tunneltype = "type = tunnel";
                            $localid_type = $ph2ent['localid']['type'];
                            $leftsubnet_data = ipsec_idinfo_to_cidr($ph2ent['localid'], false, $ph2ent['mode']);
                            /* Do not print localid in some cases, such as a pure-psk or psk/xauth single phase2 mobile tunnel */
                            if (($localid_type == "none" || $localid_type == "mobile")
                                && isset($ph1ent['mobile']) && (ipsec_get_number_of_phase2($ph1ent['ikeid'])==1)) {
                                $left_spec = '%any';
                            } else {
                                if ($localid_type != "address") {
                                    $localid_type = "subnet";
                                }
                                // Don't let an empty subnet into config, it can cause parse errors. Ticket #2201.
                                if (!is_ipaddr($leftsubnet_data) && !is_subnet($leftsubnet_data) && ($leftsubnet_data != "0.0.0.0/0")) {
                                    log_error("Invalid IPsec Phase 2 \"{$ph2ent['descr']}\" - {$ph2ent['localid']['type']} has no subnet.");
                                    continue;
                                }
                                if (!empty($ph2ent['natlocalid'])) {
                                    $natfilterrules = true;
                                }
                            }

                            $leftsubnet_spec[] = $leftsubnet_data;

                            if (!isset($ph2ent['mobile'])) {
                                $tmpsubnet = ipsec_idinfo_to_cidr($ph2ent['remoteid'], false, $ph2ent['mode']);
                                $rightsubnet_spec[] = $tmpsubnet;
                            } else if (!empty($a_client['pool_address'])) {
                                $rightsubnet_spec[] = "{$a_client['pool_address']}/{$a_client['pool_netbits']}";
                            }
                        } else {
                            $tunneltype = "type = transport";
                            if ((($ph1ent['authentication_method'] == "xauth_psk_server") ||
                              ($ph1ent['authentication_method'] == "pre_shared_key")) && isset($ph1ent['mobile'])) {
                                $left_spec = "%any";
                            } else {
                                $tmpsubnet = ipsec_get_phase1_src($ph1ent);
                                $leftsubnet_spec[] = $tmpsubnet;
                            }
                            if (!isset($ph2ent['mobile'])) {
                                $rightsubnet_spec[] = $right_spec;
                            }
                        }
                        if (isset($a_client['pfs_group'])) {
                            $ph2ent['pfsgroup'] = $a_client['pfs_group'];
                        }
                        if (isset($ph2ent['protocol']) && $ph2ent['protocol'] == 'esp') {
                            $ealgoESPsp2arr_details = array();
                            if (is_array($ph2ent['encryption-algorithm-option'])) {
                                foreach ($ph2ent['encryption-algorithm-option'] as $ealg) {
                                    $ealg_id = $ealg['name'];
                                    if (isset($ealg['keylen'])) {
                                        $ealg_kl = $ealg['keylen'];
                                    } else {
                                        $ealg_kl = null;
                                    }

                                    if ($ealg_kl == "auto") {
                                        $key_hi = $p2_ealgos[$ealg_id]['keysel']['hi'];
                                        $key_lo = $p2_ealgos[$ealg_id]['keysel']['lo'];
                                        $key_step = $p2_ealgos[$ealg_id]['keysel']['step'];
                                        /* XXX: in some cases where include ordering is suspect these variables
                                        * are somehow 0 and we enter this loop forever and timeout after 900
                                        * seconds wrecking bootup */
                                        if ($key_hi != 0 and $key_lo !=0 and $key_step !=0) {
                                            for ($keylen = $key_hi; $keylen >= $key_lo; $keylen -= $key_step) {
                                                if (!empty($ph2ent['hash-algorithm-option']) && is_array($ph2ent['hash-algorithm-option'])) {
                                                    foreach ($ph2ent['hash-algorithm-option'] as $halgo) {
                                                        $halgo = str_replace('hmac_', '', $halgo);
                                                        $tmpealgo = "{$ealg_id}{$keylen}-{$halgo}";
1089
                                                        $modp = ipsec_convert_to_modp($ph2ent['pfsgroup']);
1090 1091 1092 1093 1094 1095 1096
                                                        if (!empty($modp)) {
                                                            $tmpealgo .= "-{$modp}";
                                                        }
                                                        $ealgoESPsp2arr_details[] = $tmpealgo;
                                                    }
                                                } else {
                                                    $tmpealgo = "{$ealg_id}{$keylen}";
1097
                                                    $modp = ipsec_convert_to_modp($ph2ent['pfsgroup']);
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109
                                                    if (!empty($modp)) {
                                                        $tmpealgo .= "-{$modp}";
                                                    }
                                                    $ealgoESPsp2arr_details[] = $tmpealgo;
                                                }
                                            }
                                        }
                                    } else {
                                        if (!empty($ph2ent['hash-algorithm-option']) && is_array($ph2ent['hash-algorithm-option'])) {
                                            foreach ($ph2ent['hash-algorithm-option'] as $halgo) {
                                                $halgo = str_replace('hmac_', '', $halgo);
                                                $tmpealgo = "{$ealg_id}{$ealg_kl}-{$halgo}";
1110
                                                $modp = ipsec_convert_to_modp($ph2ent['pfsgroup']);
1111 1112 1113 1114 1115 1116 1117
                                                if (!empty($modp)) {
                                                    $tmpealgo .= "-{$modp}";
                                                }
                                                $ealgoESPsp2arr_details[] = $tmpealgo;
                                            }
                                        } else {
                                            $tmpealgo = "{$ealg_id}{$ealg_kl}";
1118
                                            $modp = ipsec_convert_to_modp($ph2ent['pfsgroup']);
1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130
                                            if (!empty($modp)) {
                                                $tmpealgo .= "-{$modp}";
                                            }
                                            $ealgoESPsp2arr_details[] = $tmpealgo;
                                        }
                                    }
                                }
                            }
                            $ealgoESPsp2arr[] = $ealgoESPsp2arr_details;
                        } else if (isset($ph2ent['protocol']) && $ph2ent['protocol'] == 'ah') {
                            $ealgoAHsp2arr_details = array();
                            if (!empty($ph2ent['hash-algorithm-option']) && is_array($ph2ent['hash-algorithm-option'])) {
1131
                                $modp = ipsec_convert_to_modp($ph2ent['pfsgroup']);
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297
                                foreach ($ph2ent['hash-algorithm-option'] as $tmpAHalgo) {
                                    $tmpAHalgo = str_replace('hmac_', '', $tmpAHalgo);
                                    if (!empty($modp)) {
                                        $tmpAHalgo = "-{$modp}";
                                    }
                                    $ealgoAHsp2arr_details[] = $tmpAHalgo;
                                }
                            }
                            $ealgoAHsp2arr[] = $ealgoAHsp2arr_details;
                        }

                        if (!empty($ph2ent['lifetime'])) {
                            if ($ipseclifetime == 0 || intval($ipseclifetime) > intval($ph2ent['lifetime'])) {
                                $ipseclifetime = intval($ph2ent['lifetime']);
                            }
                        }
                    }
                }

                $connEntry =<<<EOD

conn con<<connectionId>>
  aggressive = {$aggressive}
  fragmentation = yes
  keyexchange = {$keyexchange}
  {$reauth}
  {$rekey}
  {$forceencaps}
  installpolicy = yes
  {$tunneltype}
  {$dpdline}
  auto = {$conn_auto}
  left = {$left_spec}
  right = {$right_spec}
  leftid = {$myid_data}
  {$ikelifeline}

EOD;

                if ($ipseclifetime > 0) {
                    $connEntry .= "\tlifetime = {$ipseclifetime}s\n";
                }
                if (!empty($rightsourceip)) {
                    $connEntry .= "{$rightsourceip}";
                }
                if (!empty($ealgosp1)) {
                    $connEntry .= "\t{$ealgosp1}\n";
                }
                if (!empty($authentication)) {
                    $connEntry .= "\t{$authentication}\n";
                }
                if (!empty($peerid_spec)) {
                    $connEntry .= "\trightid = {$peerid_spec}\n";
                }

                // append ipsec connections
                if (!isset($ph1ent['mobile']) && $keyexchange == 'ikev1') {
                    // ikev1 not mobile
                    for ($idx = 0 ; $idx < count($leftsubnet_spec) ; ++$idx) {
                        if (count($leftsubnet_spec) == 1) {
                            $tmpconf =  str_replace('<<connectionId>>', "{$ph1ent['ikeid']}", $connEntry);
                        } else {
                            // suffix connection with sequence number
                            $tmpconf =  str_replace('<<connectionId>>', "{$ph1ent['ikeid']}-00{$idx}", $connEntry);
                        }
                        $tmpconf .= "\trightsubnet =" . $rightsubnet_spec[$idx]. "\n" ;
                        $tmpconf .= "\tleftsubnet = " . $leftsubnet_spec[$idx] . "\n";
                        if (!empty($ealgoESPsp2arr[$idx])) {
                            $tmpconf .= "\tesp = " . join(',', $ealgoESPsp2arr[$idx]) . "!\n";
                        }
                        if (!empty($ealgoAHsp2arr[$idx])) {
                            $connEntry .= "\tah = " . join(',', $ealgoAHsp2arr[$idx]) . "!\n";
                        }
                        $ipsecconf .= $tmpconf;
                    }
                } else {
                    // mobile and ikev2
                    $tmpconf =  str_replace('<<connectionId>>', "{$ph1ent['ikeid']}", $connEntry);
                    if (!empty($rightsubnet_spec)) {
                        $tmpconf .= "\trightsubnet = " . join(",", $rightsubnet_spec) . "\n";
                    }
                    if (!empty($leftsubnet_spec)) {
                        $tmpconf .= "\tleftsubnet = " . join(",", $leftsubnet_spec) . "\n";
                    }
                    // merge esp phase 2 arrays.
                    $esp_content = array();
                    foreach ($ealgoESPsp2arr as $ealgoESPsp2arr_details) {
                        foreach ($ealgoESPsp2arr_details as $esp_item) {
                            if (!in_array($esp_item, $esp_content)) {
                                $esp_content[] = $esp_item;
                            }
                        }
                    }
                    // merge ah phase 2 arrays.
                    $ah_content = array();
                    foreach ($ealgoAHsp2arr as $ealgoAHsp2arr_details) {
                        foreach ($ealgoAHsp2arr_details as $ah_item) {
                            if (!in_array($ah_item, $ah_content)) {
                                $ah_content[] = $ah_item;
                            }
                        }
                    }
                    if (!empty($esp_content)) {
                        $tmpconf .= "\tesp = " . join(',', $esp_content) . "!\n";
                    }
                    if (!empty($ah_content)) {
                        $tmpconf .= "\tah = " . join(',', $ah_content) . "!\n";
                    }
                    $ipsecconf .= $tmpconf;
                }
            }
        }
    }
    // dump file, replace tabs for 2 spaces
    @file_put_contents("/usr/local/etc/ipsec.conf", str_replace("\t",'  ', $ipsecconf));
    unset($ipsecconf);
    /* end ipsec.conf */

    /* mange process */
    if (isvalidpid('/var/run/charon.pid')) {
        /* Read secrets */
        mwexec('/usr/local/sbin/ipsec rereadall', false);
        /* Update configuration changes */
        mwexec('/usr/local/sbin/ipsec reload', false);
    } else {
        mwexec("/usr/local/sbin/ipsec start", false);
    }

    if ($natfilterrules == true) {
        filter_configure();
    }

    /* start filterdns, if necessary */
    if (count($filterdns_list) > 0) {
        $interval = 60;
        if (!empty($ipseccfg['dns-interval']) && is_numeric($ipseccfg['dns-interval'])) {
            $interval = $ipseccfg['dns-interval'];
        }

        $hostnames = "";
        array_unique($filterdns_list);
        foreach ($filterdns_list as $hostname) {
            $hostnames .= "cmd {$hostname} '/usr/local/opnsense/service/configd_ctl.py ipsecdns reload'\n";
        }
        file_put_contents("/usr/local/etc/filterdns-ipsec.hosts", $hostnames);
        unset($hostnames);

        if (isvalidpid('/var/run/filterdns-ipsec.pid')) {
            killbypid('/var/run/filterdns-ipsec.pid', 'HUP');
        } else {
            mwexec("/usr/local/sbin/filterdns -p /var/run/filterdns-ipsec.pid -i {$interval} -c /usr/local/etc/filterdns-ipsec.hosts -d 1");
        }
    } else {
        killbypid('/var/run/filterdns-ipsec.pid');
    }

    if (file_exists("/var/run/booting")) {
        echo "done\n";
    }

    return count($filterdns_list);
}

/*
 * Forcefully restart IPsec
 * This is required for when dynamic interfaces reload
1298
 * For all other occasions the normal ipsec_configure()
1299 1300
 * will gracefully reload the settings without restarting
 */
1301
function ipsec_force_reload($interface = '')
1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323
{
    global $config;

    $ipseccfg = $config['ipsec'];

    if (!empty($interface) && isset($ipseccfg['phase1']) && is_array($ipseccfg['phase1'])) {
        $found = false;
        foreach ($ipseccfg['phase1'] as $ipsec) {
            if (!isset($ipsec['disabled']) && ($ipsec['interface'] == $interface)) {
                $found = true;
                break;
            }
        }
        if (!$found) {
            log_error(sprintf(gettext("Ignoring IPsec reload since there are no tunnels on interface %s"), $interface));
            return;
        }
    }

    /* if ipsec is enabled, start up again */
    if (isset($ipseccfg['enable'])) {
        log_error(gettext("Forcefully reloading IPsec"));
1324
        ipsec_configure();
1325 1326
    }
}