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Diffstat (limited to 'src/etc/inc/openvpn.inc')
| -rw-r--r-- | src/etc/inc/openvpn.inc | 1589 |
1 files changed, 1589 insertions, 0 deletions
diff --git a/src/etc/inc/openvpn.inc b/src/etc/inc/openvpn.inc new file mode 100644 index 0000000..d74aa3e --- /dev/null +++ b/src/etc/inc/openvpn.inc @@ -0,0 +1,1589 @@ +<?php +/* + openvpn.inc part of pfSense + + Copyright (C) 2008 Scott Ullrich <sullrich@gmail.com> + All rights reserved. + + Copyright (C) 2006 Fernando Lemos + All rights reserved. + + This file was rewritten from scratch by Fernando Lemos but + *MIGHT* contain code previously written by: + + Copyright (C) 2005 Peter Allgeyer <allgeyer_AT_web.de> + All rights reserved. + + Copyright (C) 2004 Peter Curran (peter@closeconsultants.com). + 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 notices, + this list of conditions and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above copyright + notices, 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/local/sbin/openvpn /usr/bin/openssl /sbin/ifconfig + pfSense_MODULE: openvpn + +*/ +require_once('config.inc'); +require_once("certs.inc"); +require_once('pfsense-utils.inc'); +require_once("auth.inc"); + +global $openvpn_prots; +$openvpn_prots = array("UDP", "UDP6", "TCP", "TCP6"); + +global $openvpn_dev_mode; +$openvpn_dev_mode = array("tun", "tap"); + +global $openvpn_verbosity_level; +$openvpn_verbosity_level = array( + 0 => "none", + 1 => "default", + 2 => "2", + 3 => "3 (recommended)", + 4 => "4", + 5 => "5", + 6 => "6", + 7 => "7", + 8 => "8", + 9 => "9", + 10 => "10", + 11 => "11" +); + +/* + * The User Auth mode below is disabled because + * OpenVPN erroneously requires that we provide + * a CA configuration parameter. In this mode, + * clients don't send a certificate so there is + * no need for a CA. If we require that admins + * provide one in the pfSense UI due to a bogus + * requirement imposed by OpenVPN, it could be + * considered very confusing ( I know I was ). + * + * -mgrooms + */ + +global $openvpn_dh_lengths; +$openvpn_dh_lengths = array( + 1024, 2048, 4096); + +global $openvpn_cert_depths; +$openvpn_cert_depths = array( + 1 => "One (Client+Server)", + 2 => "Two (Client+Intermediate+Server)", + 3 => "Three (Client+2xIntermediate+Server)", + 4 => "Four (Client+3xIntermediate+Server)", + 5 => "Five (Client+4xIntermediate+Server)" +); + +global $openvpn_server_modes; +$openvpn_server_modes = array( + 'p2p_tls' => gettext("Peer to Peer ( SSL/TLS )"), + 'p2p_shared_key' => gettext("Peer to Peer ( Shared Key )"), + 'server_tls' => gettext("Remote Access ( SSL/TLS )"), + 'server_user' => gettext("Remote Access ( User Auth )"), + 'server_tls_user' => gettext("Remote Access ( SSL/TLS + User Auth )")); + +global $openvpn_client_modes; +$openvpn_client_modes = array( + 'p2p_tls' => gettext("Peer to Peer ( SSL/TLS )"), + 'p2p_shared_key' => gettext("Peer to Peer ( Shared Key )")); + +global $openvpn_compression_modes; +$openvpn_compression_modes = array( + '' => gettext("No Preference"), + 'no' => gettext("Disabled - No Compression"), + 'adaptive' => gettext("Enabled with Adaptive Compression"), + 'yes' => gettext("Enabled without Adaptive Compression")); + +function openvpn_create_key() { + + $fp = popen("/usr/local/sbin/openvpn --genkey --secret /dev/stdout 2>/dev/null", "r"); + if (!$fp) { + return false; + } + + $rslt = stream_get_contents($fp); + pclose($fp); + + return $rslt; +} + +function openvpn_create_dhparams($bits) { + + $fp = popen("/usr/bin/openssl dhparam {$bits} 2>/dev/null", "r"); + if (!$fp) { + return false; + } + + $rslt = stream_get_contents($fp); + pclose($fp); + + return $rslt; +} + +function openvpn_vpnid_used($vpnid) { + global $config; + + if (is_array($config['openvpn']['openvpn-server'])) { + foreach ($config['openvpn']['openvpn-server'] as & $settings) { + if ($vpnid == $settings['vpnid']) { + return true; + } + } + } + + if (is_array($config['openvpn']['openvpn-client'])) { + foreach ($config['openvpn']['openvpn-client'] as & $settings) { + if ($vpnid == $settings['vpnid']) { + return true; + } + } + } + + return false; +} + +function openvpn_vpnid_next() { + + $vpnid = 1; + while (openvpn_vpnid_used($vpnid)) { + $vpnid++; + } + + return $vpnid; +} + +function openvpn_port_used($prot, $interface, $port, $curvpnid = 0) { + global $config; + + if (is_array($config['openvpn']['openvpn-server'])) { + foreach ($config['openvpn']['openvpn-server'] as & $settings) { + if (isset($settings['disable'])) { + continue; + } + + if ($curvpnid != 0 && $curvpnid == $settings['vpnid']) { + continue; + } + + if ($port == $settings['local_port'] && $prot == $settings['protocol'] && + ($interface == $settings['interface'] || $interface == "any" || $settings['interface'] == "any")) { + return $settings['vpnid']; + } + } + } + + if (is_array($config['openvpn']['openvpn-client'])) { + foreach ($config['openvpn']['openvpn-client'] as & $settings) { + if (isset($settings['disable'])) { + continue; + } + + if ($curvpnid != 0 && $curvpnid == $settings['vpnid']) { + continue; + } + + if ($port == $settings['local_port'] && $prot == $settings['protocol'] && + ($interface == $settings['interface'] || $interface == "any" || $settings['interface'] == "any")) { + return $settings['vpnid']; + } + } + } + + return 0; +} + +function openvpn_port_next($prot, $interface = "wan") { + + $port = 1194; + while (openvpn_port_used($prot, $interface, $port)) { + $port++; + } + while (openvpn_port_used($prot, "any", $port)) { + $port++; + } + + return $port; +} + +function openvpn_get_cipherlist() { + + $ciphers = array(); + $cipher_out = shell_exec('/usr/local/sbin/openvpn --show-ciphers | /usr/bin/grep "default key" | /usr/bin/awk \'{print $1, "(" $2 "-" $3 ")";}\''); + $cipher_lines = explode("\n", trim($cipher_out)); + sort($cipher_lines); + foreach ($cipher_lines as $line) { + $words = explode(' ', $line); + $ciphers[$words[0]] = "{$words[0]} {$words[1]}"; + } + $ciphers["none"] = gettext("None (No Encryption)"); + return $ciphers; +} + +function openvpn_get_digestlist() { + + $digests = array(); + $digest_out = shell_exec('/usr/local/sbin/openvpn --show-digests | /usr/bin/grep "digest size" | /usr/bin/awk \'{print $1, "(" $2 "-" $3 ")";}\''); + $digest_lines = explode("\n", trim($digest_out)); + sort($digest_lines); + foreach ($digest_lines as $line) { + $words = explode(' ', $line); + $digests[$words[0]] = "{$words[0]} {$words[1]}"; + } + $digests["none"] = gettext("None (No Authentication)"); + return $digests; +} + +function openvpn_get_engines() { + $openssl_engines = array('none' => 'No Hardware Crypto Acceleration'); + exec("/usr/bin/openssl engine -t -c", $openssl_engine_output); + $openssl_engine_output = implode("\n", $openssl_engine_output); + $openssl_engine_output = preg_replace("/\\n\\s+/", "|", $openssl_engine_output); + $openssl_engine_output = explode("\n", $openssl_engine_output); + + foreach ($openssl_engine_output as $oeo) { + $keep = true; + $details = explode("|", $oeo); + $engine = array_shift($details); + $linematch = array(); + preg_match("/\((.*)\)\s(.*)/", $engine, $linematch); + foreach ($details as $dt) { + if (strpos($dt, "unavailable") !== FALSE) { + $keep = false; + } + if (strpos($dt, "available") !== FALSE) { + continue; + } + if (strpos($dt, "[") !== FALSE) { + $ciphers = trim($dt, "[]"); + } + } + if (!empty($ciphers)) { + $ciphers = " - " . $ciphers; + } + if (strlen($ciphers) > 60) { + $ciphers = substr($ciphers, 0, 60) . " ... "; + } + if ($keep) { + $openssl_engines[$linematch[1]] = $linematch[2] . $ciphers; + } + } + return $openssl_engines; +} + +function openvpn_validate_engine($engine) { + $engines = openvpn_get_engines(); + return array_key_exists($engine, $engines); +} + +function openvpn_validate_host($value, $name) { + $value = trim($value); + if (empty($value) || (!is_domain($value) && !is_ipaddr($value))) { + return sprintf(gettext("The field '%s' must contain a valid IP address or domain name."), $name); + } + return false; +} + +function openvpn_validate_port($value, $name) { + $value = trim($value); + if (empty($value) || !is_numeric($value) || $value < 0 || ($value > 65535)) { + return sprintf(gettext("The field '%s' must contain a valid port, ranging from 0 to 65535."), $name); + } + return false; +} + +function openvpn_validate_cidr($value, $name, $multiple = false, $ipproto = "ipv4") { + $value = trim($value); + $error = false; + if (empty($value)) { + return false; + } + $networks = explode(',', $value); + + if (!$multiple && (count($networks) > 1)) { + return sprintf(gettext("The field '%s' must contain a single valid %s CIDR range."), $name, $ipproto); + } + + foreach ($networks as $network) { + if ($ipproto == "ipv4") { + $error = !openvpn_validate_cidr_ipv4($network); + } else { + $error = !openvpn_validate_cidr_ipv6($network); + } + if ($error) { + break; + } + } + + if ($error) { + return sprintf(gettext("The field '%s' must contain only valid %s CIDR range(s) separated by commas."), $name, $ipproto); + } else { + return false; + } +} + +function openvpn_validate_cidr_ipv4($value) { + $value = trim($value); + if (!empty($value)) { + list($ip, $mask) = explode('/', $value); + if (!is_ipaddrv4($ip) or !is_numeric($mask) or ($mask > 32) or ($mask < 0)) { + return false; + } + } + return true; +} + +function openvpn_validate_cidr_ipv6($value) { + $value = trim($value); + if (!empty($value)) { + list($ipv6, $prefix) = explode('/', $value); + if (empty($prefix)) { + $prefix = "128"; + } + if (!is_ipaddrv6($ipv6) or !is_numeric($prefix) or ($prefix > 128) or ($prefix < 0)) { + return false; + } + } + return true; +} + +function openvpn_add_dhcpopts(& $settings, & $conf) { + + if (!empty($settings['dns_domain'])) { + $conf .= "push \"dhcp-option DOMAIN {$settings['dns_domain']}\"\n"; + } + + if (!empty($settings['dns_server1'])) { + $conf .= "push \"dhcp-option DNS {$settings['dns_server1']}\"\n"; + } + if (!empty($settings['dns_server2'])) { + $conf .= "push \"dhcp-option DNS {$settings['dns_server2']}\"\n"; + } + if (!empty($settings['dns_server3'])) { + $conf .= "push \"dhcp-option DNS {$settings['dns_server3']}\"\n"; + } + if (!empty($settings['dns_server4'])) { + $conf .= "push \"dhcp-option DNS {$settings['dns_server4']}\"\n"; + } + + if (!empty($settings['push_register_dns'])) { + $conf .= "push \"register-dns\"\n"; + } + + if (!empty($settings['ntp_server1'])) { + $conf .= "push \"dhcp-option NTP {$settings['ntp_server1']}\"\n"; + } + if (!empty($settings['ntp_server2'])) { + $conf .= "push \"dhcp-option NTP {$settings['ntp_server2']}\"\n"; + } + + if ($settings['netbios_enable']) { + + if (!empty($settings['dhcp_nbttype']) && ($settings['dhcp_nbttype'] != 0)) { + $conf .= "push \"dhcp-option NBT {$settings['dhcp_nbttype']}\"\n"; + } + if (!empty($settings['dhcp_nbtscope'])) { + $conf .= "push \"dhcp-option NBS {$settings['dhcp_nbtscope']}\"\n"; + } + + if (!empty($settings['wins_server1'])) { + $conf .= "push \"dhcp-option WINS {$settings['wins_server1']}\"\n"; + } + if (!empty($settings['wins_server2'])) { + $conf .= "push \"dhcp-option WINS {$settings['wins_server2']}\"\n"; + } + + if (!empty($settings['nbdd_server1'])) { + $conf .= "push \"dhcp-option NBDD {$settings['nbdd_server1']}\"\n"; + } + } + + if ($settings['gwredir']) { + $conf .= "push \"redirect-gateway def1\"\n"; + } +} + +function openvpn_add_custom(& $settings, & $conf) { + + if ($settings['custom_options']) { + + $options = explode(';', $settings['custom_options']); + + if (is_array($options)) { + foreach ($options as $option) { + $conf .= "$option\n"; + } + } else { + $conf .= "{$settings['custom_options']}\n"; + } + } +} + +function openvpn_add_keyfile(& $data, & $conf, $mode_id, $directive, $opt = "") { + global $g; + + $fpath = $g['varetc_path']."/openvpn/{$mode_id}.{$directive}"; + openvpn_create_dirs(); + file_put_contents($fpath, base64_decode($data)); + //chown($fpath, 'nobody'); + //chgrp($fpath, 'nobody'); + @chmod($fpath, 0600); + + $conf .= "{$directive} {$fpath} {$opt}\n"; +} + +function openvpn_reconfigure($mode, $settings) { + global $g, $config; + + if (empty($settings)) { + return; + } + if (isset($settings['disable'])) { + return; + } + openvpn_create_dirs(); + /* + * NOTE: Deleting tap devices causes spontaneous reboots. Instead, + * we use a vpnid number which is allocated for a particular client + * or server configuration. ( see openvpn_vpnid_next() ) + */ + + $vpnid = $settings['vpnid']; + $mode_id = $mode.$vpnid; + + if (isset($settings['dev_mode'])) { + $tunname = "{$settings['dev_mode']}{$vpnid}"; + } else { + /* defaults to tun */ + $tunname = "tun{$vpnid}"; + $settings['dev_mode'] = "tun"; + } + + if ($mode == "server") { + $devname = "ovpns{$vpnid}"; + } else { + $devname = "ovpnc{$vpnid}"; + } + + /* is our device already configured */ + if (!does_interface_exist($devname)) { + + /* create the tap device if required */ + if (!file_exists("/dev/{$tunname}")) { + exec("/sbin/ifconfig " . escapeshellarg($tunname) . " create"); + } + + /* rename the device */ + mwexec("/sbin/ifconfig " . escapeshellarg($tunname) . " name " . escapeshellarg($devname)); + + /* add the device to the openvpn group and make sure it's UP*/ + mwexec("/sbin/ifconfig " . escapeshellarg($devname) . " group openvpn up"); + + $ifname = convert_real_interface_to_friendly_interface_name($devname); + $grouptmp = link_interface_to_group($ifname); + if (!empty($grouptmp)) { + array_walk($grouptmp, 'interface_group_add_member'); + } + unset($grouptmp, $ifname); + } + + $pfile = $g['varrun_path'] . "/openvpn_{$mode_id}.pid"; + $proto = strtolower($settings['protocol']); + if (substr($settings['protocol'], 0, 3) == "TCP") { + $proto = "{$proto}-{$mode}"; + } + $dev_mode = $settings['dev_mode']; + $cipher = $settings['crypto']; + // OpenVPN defaults to SHA1, so use it when unset to maintain compatibility. + $digest = !empty($settings['digest']) ? $settings['digest'] : "SHA1"; + + $interface = get_failover_interface($settings['interface']); + // The IP address in the settings can be an IPv4 or IPv6 address associated with the interface + $ipaddr = $settings['ipaddr']; + + // If a specific ip address (VIP) is requested, use it. + // Otherwise, if a specific interface is requested, use it + // If "any" interface was selected, local directive will be omitted. + if (is_ipaddrv4($ipaddr)) { + $iface_ip = $ipaddr; + } else { + if ((!empty($interface)) && (strcmp($interface, "any"))) { + $iface_ip=get_interface_ip($interface); + } + } + if (is_ipaddrv6($ipaddr)) { + $iface_ipv6 = $ipaddr; + } else { + if ((!empty($interface)) && (strcmp($interface, "any"))) { + $iface_ipv6=get_interface_ipv6($interface); + } + } + + + $conf = "dev {$devname}\n"; + if (isset($settings['verbosity_level'])) { + $conf .= "verb {$settings['verbosity_level']}\n"; + } + + $conf .= "dev-type {$settings['dev_mode']}\n"; + switch ($settings['dev_mode']) { + case "tun": + if (!$settings['no_tun_ipv6']) { + $conf .= "tun-ipv6\n"; + } + break; + } + $conf .= "dev-node /dev/{$tunname}\n"; + $conf .= "writepid {$pfile}\n"; + $conf .= "#user nobody\n"; + $conf .= "#group nobody\n"; + $conf .= "script-security 3\n"; + $conf .= "daemon\n"; + $conf .= "keepalive 10 60\n"; + $conf .= "ping-timer-rem\n"; + $conf .= "persist-tun\n"; + $conf .= "persist-key\n"; + $conf .= "proto {$proto}\n"; + $conf .= "cipher {$cipher}\n"; + $conf .= "auth {$digest}\n"; + $conf .= "up /usr/local/sbin/ovpn-linkup\n"; + $conf .= "down /usr/local/sbin/ovpn-linkdown\n"; + if (file_exists("/usr/local/sbin/openvpn.attributes.sh")) { + switch ($settings['mode']) { + case 'server_user': + case 'server_tls_user': + $conf .= "client-connect /usr/local/sbin/openvpn.attributes.sh\n"; + $conf .= "client-disconnect /usr/local/sbin/openvpn.attributes.sh\n"; + break; + } + } + + /* Determine the local IP to use - and make sure it matches with the selected protocol. */ + if (is_ipaddrv4($iface_ip) && (stristr($settings['protocol'], "6") === false)) { + $conf .= "local {$iface_ip}\n"; + } elseif (is_ipaddrv6($iface_ipv6) && (stristr($settings['protocol'], "6") !== false)) { + $conf .= "local {$iface_ipv6}\n"; + } + + if (openvpn_validate_engine($settings['engine']) && ($settings['engine'] != "none")) { + $conf .= "engine {$settings['engine']}\n"; + } + + // server specific settings + if ($mode == 'server') { + + list($ip, $cidr) = explode('/', $settings['tunnel_network']); + list($ipv6, $prefix) = explode('/', $settings['tunnel_networkv6']); + $mask = gen_subnet_mask($cidr); + + // configure tls modes + switch ($settings['mode']) { + case 'p2p_tls': + case 'server_tls': + case 'server_user': + case 'server_tls_user': + $conf .= "tls-server\n"; + break; + } + + // configure p2p/server modes + switch ($settings['mode']) { + case 'p2p_tls': + // If the CIDR is less than a /30, OpenVPN will complain if you try to + // use the server directive. It works for a single client without it. + // See ticket #1417 + if (!empty($ip) && !empty($mask) && ($cidr < 30)) { + $conf .= "server {$ip} {$mask}\n"; + $conf .= "client-config-dir {$g['varetc_path']}/openvpn-csc\n"; + if (is_ipaddr($ipv6)) { + $conf .= "server-ipv6 {$ipv6}/{$prefix}\n"; + } + } + case 'p2p_shared_key': + if (!empty($ip) && !empty($mask)) { + list($ip1, $ip2) = openvpn_get_interface_ip($ip, $mask); + if ($settings['dev_mode'] == 'tun') { + $conf .= "ifconfig {$ip1} {$ip2}\n"; + } else { + $conf .= "ifconfig {$ip1} {$mask}\n"; + } + } + if (!empty($ipv6) && !empty($prefix)) { + list($ipv6_1, $ipv6_2) = openvpn_get_interface_ipv6($ipv6, $prefix); + if ($settings['dev_mode'] == 'tun') { + $conf .= "ifconfig-ipv6 {$ipv6_1} {$ipv6_2}\n"; + } else { + $conf .= "ifconfig-ipv6 {$ipv6_1} {$prefix}\n"; + } + } + break; + case 'server_tls': + case 'server_user': + case 'server_tls_user': + if (!empty($ip) && !empty($mask)) { + $conf .= "server {$ip} {$mask}\n"; + if (is_ipaddr($ipv6)) { + $conf .= "server-ipv6 {$ipv6}/{$prefix}\n"; + } + $conf .= "client-config-dir {$g['varetc_path']}/openvpn-csc\n"; + } else { + if ($settings['serverbridge_dhcp']) { + if ((!empty($settings['serverbridge_interface'])) && (strcmp($settings['serverbridge_interface'], "none"))) { + $biface_ip=get_interface_ip($settings['serverbridge_interface']); + $biface_sm=gen_subnet_mask(get_interface_subnet($settings['serverbridge_interface'])); + if (is_ipaddrv4($biface_ip) && is_ipaddrv4($settings['serverbridge_dhcp_start']) && is_ipaddrv4($settings['serverbridge_dhcp_end'])) { + $conf .= "server-bridge {$biface_ip} {$biface_sm} {$settings['serverbridge_dhcp_start']} {$settings['serverbridge_dhcp_end']}\n"; + $conf .= "client-config-dir {$g['varetc_path']}/openvpn-csc\n"; + } else { + $conf .= "mode server\n"; + } + } else { + $conf .= "mode server\n"; + } + } + } + break; + } + + // configure user auth modes + switch ($settings['mode']) { + case 'server_user': + $conf .= "client-cert-not-required\n"; + case 'server_tls_user': + /* username-as-common-name is not compatible with server-bridge */ + if (stristr($conf, "server-bridge") === false) { + $conf .= "username-as-common-name\n"; + } + if (!empty($settings['authmode'])) { + $strictusercn = "false"; + if ($settings['strictusercn']) { + $strictusercn = "true"; + } + $conf .= "auth-user-pass-verify \"/usr/local/sbin/ovpn_auth_verify user '{$settings['authmode']}' {$strictusercn} {$mode_id}\" via-env\n"; + } + break; + } + if (!isset($settings['cert_depth']) && (strstr($settings['mode'], 'tls'))) { + $settings['cert_depth'] = 1; + } + if (is_numeric($settings['cert_depth'])) { + if (($mode == 'client') && empty($settings['certref'])) { + $cert = ""; + } else { + $cert = lookup_cert($settings['certref']); + /* XXX: Seems not used at all! */ + $servercn = urlencode(cert_get_cn($cert['crt'])); + $conf .= "tls-verify \"/usr/local/sbin/ovpn_auth_verify tls '{$servercn}' {$settings['cert_depth']} \"\n"; + } + } + + // The local port to listen on + $conf .= "lport {$settings['local_port']}\n"; + + // The management port to listen on + // Use unix socket to overcome the problem on any type of server + $conf .= "management {$g['varetc_path']}/openvpn/{$mode_id}.sock unix\n"; + //$conf .= "management 127.0.0.1 {$settings['local_port']}\n"; + + if ($settings['maxclients']) { + $conf .= "max-clients {$settings['maxclients']}\n"; + } + + // Can we push routes + if ($settings['local_network']) { + $conf .= openvpn_gen_routes($settings['local_network'], "ipv4", true); + } + if ($settings['local_networkv6']) { + $conf .= openvpn_gen_routes($settings['local_networkv6'], "ipv6", true); + } + + switch ($settings['mode']) { + case 'server_tls': + case 'server_user': + case 'server_tls_user': + // Configure client dhcp options + openvpn_add_dhcpopts($settings, $conf); + if ($settings['client2client']) { + $conf .= "client-to-client\n"; + } + break; + } + if (isset($settings['duplicate_cn'])) { + $conf .= "duplicate-cn\n"; + } + } + + // client specific settings + + if ($mode == 'client') { + + // configure p2p mode + switch ($settings['mode']) { + case 'p2p_tls': + $conf .= "tls-client\n"; + case 'shared_key': + $conf .= "client\n"; + break; + } + + // If there is no bind option at all (ip and/or port), add "nobind" directive + // Otherwise, use the local port if defined, failing that, use lport 0 to + // ensure a random source port. + if ((empty($iface_ip)) && (!$settings['local_port'])) { + $conf .= "nobind\n"; + } elseif ($settings['local_port']) { + $conf .= "lport {$settings['local_port']}\n"; + } else { + $conf .= "lport 0\n"; + } + + // Use unix socket to overcome the problem on any type of server + $conf .= "management {$g['varetc_path']}/openvpn/{$mode_id}.sock unix\n"; + + // The remote server + $conf .= "remote {$settings['server_addr']} {$settings['server_port']}\n"; + + if (!empty($settings['use_shaper'])) { + $conf .= "shaper {$settings['use_shaper']}\n"; + } + + if (!empty($settings['tunnel_network'])) { + list($ip, $mask) = explode('/', $settings['tunnel_network']); + $mask = gen_subnet_mask($mask); + list($ip1, $ip2) = openvpn_get_interface_ip($ip, $mask); + if ($settings['dev_mode'] == 'tun') { + $conf .= "ifconfig {$ip2} {$ip1}\n"; + } else { + $conf .= "ifconfig {$ip2} {$mask}\n"; + } + } + + if (!empty($settings['tunnel_networkv6'])) { + list($ipv6, $prefix) = explode('/', $settings['tunnel_networkv6']); + list($ipv6_1, $ipv6_2) = openvpn_get_interface_ipv6($ipv6, $prefix); + if ($settings['dev_mode'] == 'tun') { + $conf .= "ifconfig-ipv6 {$ipv6_2} {$ipv6_1}\n"; + } else { + $conf .= "ifconfig-ipv6 {$ipv6_2} {$prefix}\n"; + } + } + + if ($settings['auth_user'] || $settings['auth_pass']) { + $up_file = "{$g['varetc_path']}/openvpn/{$mode_id}.up"; + $conf .= "auth-user-pass {$up_file}\n"; + if ($settings['auth_user']) { + $userpass = "{$settings['auth_user']}\n"; + } else { + $userpass = ""; + } + if ($settings['auth_pass']) { + $userpass .= "{$settings['auth_pass']}\n"; + } + // If only auth_pass is given, then it acts like a user name and we put a blank line where pass would normally go. + if (!($settings['auth_user'] && $settings['auth_pass'])) { + $userpass .= "\n"; + } + file_put_contents($up_file, $userpass); + } + + if ($settings['proxy_addr']) { + $conf .= "http-proxy {$settings['proxy_addr']} {$settings['proxy_port']}"; + if ($settings['proxy_authtype'] != "none") { + $conf .= " {$g['varetc_path']}/openvpn/{$mode_id}.pas {$settings['proxy_authtype']}"; + $proxypas = "{$settings['proxy_user']}\n"; + $proxypas .= "{$settings['proxy_passwd']}\n"; + file_put_contents("{$g['varetc_path']}/openvpn/{$mode_id}.pas", $proxypas); + } + $conf .= " \n"; + } + } + + // Add a remote network route if set, and only for p2p modes. + if ((substr($settings['mode'], 0, 3) == "p2p") && (openvpn_validate_cidr($settings['remote_network'], "", true, "ipv4") === FALSE)) { + $conf .= openvpn_gen_routes($settings['remote_network'], "ipv4", false); + } + // Add a remote network route if set, and only for p2p modes. + if ((substr($settings['mode'], 0, 3) == "p2p") && (openvpn_validate_cidr($settings['remote_networkv6'], "", true, "ipv6") === FALSE)) { + $conf .= openvpn_gen_routes($settings['remote_networkv6'], "ipv6", false); + } + + // Write the settings for the keys + switch ($settings['mode']) { + case 'p2p_shared_key': + openvpn_add_keyfile($settings['shared_key'], $conf, $mode_id, "secret"); + break; + case 'p2p_tls': + case 'server_tls': + case 'server_tls_user': + case 'server_user': + $ca = lookup_ca($settings['caref']); + openvpn_add_keyfile($ca['crt'], $conf, $mode_id, "ca"); + + if (!empty($settings['certref'])) { + $cert = lookup_cert($settings['certref']); + openvpn_add_keyfile($cert['crt'], $conf, $mode_id, "cert"); + openvpn_add_keyfile($cert['prv'], $conf, $mode_id, "key"); + } + if ($mode == 'server') { + $conf .= "dh {$g['etc_path']}/dh-parameters.{$settings['dh_length']}\n"; + } + if (!empty($settings['crlref'])) { + $crl = lookup_crl($settings['crlref']); + crl_update($crl); + openvpn_add_keyfile($crl['text'], $conf, $mode_id, "crl-verify"); + } + if ($settings['tls']) { + if ($mode == "server") { + $tlsopt = 0; + } else { + $tlsopt = 1; + } + openvpn_add_keyfile($settings['tls'], $conf, $mode_id, "tls-auth", $tlsopt); + } + break; + } + + if (!empty($settings['compression'])) { + $conf .= "comp-lzo {$settings['compression']}\n"; + } + + if ($settings['passtos']) { + $conf .= "passtos\n"; + } + + if ($settings['resolve_retry']) { + $conf .= "resolv-retry infinite\n"; + } else if ($mode == 'clie} nt') { + $conf .= "resolv-retry infinite\n"; + } + + if ($settings['dynamic_ip']) { + $conf .= "persist-remote-ip\n"; + $conf .= "float\n"; + } + + if ($settings['topology_subnet']) { + $conf .= "topology subnet\n"; + } + + // New client features + if ($mode == "client") { + // Dont pull routes checkbox + if ($settings['route_no_pull']) { + $conf .= "route-nopull\n"; + } + + // Dont add/remove routes checkbox + if ($settings['route_no_exec']) { + $conf .= "route-noexec\n"; + } + } + + openvpn_add_custom($settings, $conf); + + openvpn_create_dirs(); + $fpath = "{$g['varetc_path']}/openvpn/{$mode_id}.conf"; + file_put_contents($fpath, $conf); + unset($conf); + $fpath = "{$g['varetc_path']}/openvpn/{$mode_id}.interface"; + file_put_contents($fpath, $interface); + //chown($fpath, 'nobody'); + //chgrp($fpath, 'nobody'); + @chmod("{$g['varetc_path']}/openvpn/{$mode_id}.conf", 0600); + @chmod("{$g['varetc_path']}/openvpn/{$mode_id}.interface", 0600); + @chmod("{$g['varetc_path']}/openvpn/{$mode_id}.key", 0600); + @chmod("{$g['varetc_path']}/openvpn/{$mode_id}.tls-auth", 0600); + @chmod("{$g['varetc_path']}/openvpn/{$mode_id}.conf", 0600); +} + +function openvpn_restart($mode, $settings) { + global $g, $config; + + $vpnid = $settings['vpnid']; + $mode_id = $mode.$vpnid; + + /* kill the process if running */ + $pfile = $g['varrun_path']."/openvpn_{$mode_id}.pid"; + if (file_exists($pfile)) { + + /* read the pid file */ + $pid = rtrim(file_get_contents($pfile)); + unlink($pfile); + + /* send a term signal to the process */ + posix_kill($pid, SIGTERM); + + /* wait until the process exits, or timeout and kill it */ + $i = 0; + while (posix_kill($pid, 0)) { + usleep(250000); + if ($i > 10) { + log_error("OpenVPN ID $mode_id PID $pid still running, killing."); + posix_kill($pid, SIGKILL); + usleep(500000); + } + $i++; + } + } + + if (isset($settings['disable'])) { + return; + } + + /* Do not start a client if we are a CARP backup on this vip! */ + if (($mode == "client") && (strstr($settings['interface'], "_vip") && get_carp_interface_status($settings['interface']) != "MASTER")) { + return; + } + + /* Check if client is bound to a gateway group */ + $a_groups = return_gateway_groups_array(); + if (is_array($a_groups[$settings['interface']])) { + /* the interface is a gateway group. If a vip is defined and its a CARP backup then do not start */ + if (($a_groups[$settings['interface']][0]['vip'] <> "") && (get_carp_interface_status($a_groups[$settings['interface']][0]['vip']) != "MASTER")) { + return; + } + } + + /* start the new process */ + $fpath = $g['varetc_path']."/openvpn/{$mode_id}.conf"; + openvpn_clear_route($mode, $settings); + mwexec_bg("/usr/local/sbin/openvpn --config " . escapeshellarg($fpath)); + + if (!platform_booting()) { + send_event("filter reload"); + } +} + +function openvpn_delete($mode, & $settings) { + global $g, $config; + + $vpnid = $settings['vpnid']; + $mode_id = $mode.$vpnid; + + if (isset($settings['dev_mode'])) { + $tunname = "{$settings['dev_mode']}{$vpnid}"; + } else { + /* defaults to tun */ + $tunname = "tun{$vpnid}"; + } + + if ($mode == "server") { + $devname = "ovpns{$vpnid}"; + } else { + $devname = "ovpnc{$vpnid}"; + } + + /* kill the process if running */ + $pfile = "{$g['varrun_path']}/openvpn_{$mode_id}.pid"; + if (file_exists($pfile)) { + + /* read the pid file */ + $pid = trim(file_get_contents($pfile)); + unlink($pfile); + + /* send a term signal to the process */ + posix_kill($pid, SIGTERM); + } + + /* remove the device from the openvpn group */ + mwexec("/sbin/ifconfig " . escapeshellarg($devname) . " -group openvpn"); + + /* restore the original adapter name */ + mwexec("/sbin/ifconfig " . escapeshellarg($devname) . " name " . escapeshellarg($tunname)); + + /* remove the configuration files */ + @array_map('unlink', glob("{$g['varetc_path']}/openvpn/{$mode_id}.*")); +} + +function openvpn_cleanup_csc($common_name) { + global $g, $config; + if (empty($common_name)) { + return; + } + $fpath = "{$g['varetc_path']}/openvpn-csc/" . basename($common_name); + if (is_file($fpath)) { + unlink_if_exists($fpath); + } + return; +} + +function openvpn_resync_csc(& $settings) { + global $g, $config; + + $fpath = $g['varetc_path']."/openvpn-csc/".$settings['common_name']; + + if (isset($settings['disable'])) { + unlink_if_exists($fpath); + return; + } + openvpn_create_dirs(); + + $conf = ''; + if ($settings['block']) { + $conf .= "disable\n"; + } + + if ($settings['push_reset']) { + $conf .= "push-reset\n"; + } + + if (!empty($settings['tunnel_network'])) { + list($ip, $mask) = explode('/', $settings['tunnel_network']); + $baselong = ip2long32($ip) & gen_subnet_mask_long($mask); + $serverip = long2ip32($baselong + 1); + $clientip = long2ip32($baselong + 2); + /* Because this is being pushed, the order from the client's point of view. */ + if ($settings['dev_mode'] != 'tap') { + $conf .= "ifconfig-push {$clientip} {$serverip}\n"; + } else { + $conf .= "ifconfig-push {$clientip} {$mask}\n"; + } + } + + if ($settings['local_network']) { + $conf .= openvpn_gen_routes($settings['local_network'], "ipv4", true); + } + if ($settings['local_networkv6']) { + $conf .= openvpn_gen_routes($settings['local_networkv6'], "ipv6", true); + } + + // Add a remote network iroute if set + if (openvpn_validate_cidr($settings['remote_network'], "", true, "ipv4") === FALSE) { + $conf .= openvpn_gen_routes($settings['remote_network'], "ipv4", false, true); + } + // Add a remote network iroute if set + if (openvpn_validate_cidr($settings['remote_networkv6'], "", true, "ipv6") === FALSE) { + $conf .= openvpn_gen_routes($settings['remote_networkv6'], "ipv6", false, true); + } + + openvpn_add_dhcpopts($settings, $conf); + + if ($settings['gwredir']) { + $conf .= "push \"redirect-gateway def1\"\n"; + } + + openvpn_add_custom($settings, $conf); + + file_put_contents($fpath, $conf); + chown($fpath, 'nobody'); + chgrp($fpath, 'nobody'); +} + +function openvpn_delete_csc(& $settings) { + global $g, $config; + + $fpath = $g['varetc_path']."/openvpn-csc/".$settings['common_name']; + unlink_if_exists($fpath); +} + +// Resync the configuration and restart the VPN +function openvpn_resync($mode, $settings) { + openvpn_reconfigure($mode, $settings); + openvpn_restart($mode, $settings); +} + +// Resync and restart all VPNs +function openvpn_resync_all($interface = "") { + global $g, $config; + + openvpn_create_dirs(); + + if (!is_array($config['openvpn'])) { + $config['openvpn'] = array(); + } + +/* + if (!$config['openvpn']['dh-parameters']) { + echo "Configuring OpenVPN Parameters ...\n"; + $dh_parameters = openvpn_create_dhparams(1024); + $dh_parameters = base64_encode($dh_parameters); + $config['openvpn']['dh-parameters'] = $dh_parameters; + write_config("OpenVPN DH parameters"); + } + + $path_ovdh = $g['varetc_path']."/openvpn/dh-parameters"; + if (!file_exists($path_ovdh)) { + $dh_parameters = $config['openvpn']['dh-parameters']; + $dh_parameters = base64_decode($dh_parameters); + file_put_contents($path_ovdh, $dh_parameters); + } +*/ + if ($interface <> "") { + log_error("Resyncing OpenVPN instances for interface " . convert_friendly_interface_to_friendly_descr($interface) . "."); + } else { + log_error("Resyncing OpenVPN instances."); + } + + if (is_array($config['openvpn']['openvpn-server'])) { + foreach ($config['openvpn']['openvpn-server'] as & $settings) { + if ($interface <> "" && $interface != $settings['interface']) { + continue; + } + openvpn_resync('server', $settings); + } + } + + if (is_array($config['openvpn']['openvpn-client'])) { + foreach ($config['openvpn']['openvpn-client'] as & $settings) { + if ($interface <> "" && $interface != $settings['interface']) { + continue; + } + openvpn_resync('client', $settings); + } + } + + if (is_array($config['openvpn']['openvpn-csc'])) { + foreach ($config['openvpn']['openvpn-csc'] as & $settings) { + openvpn_resync_csc($settings); + } + } + +} + +// Resync and restart all VPNs using a gateway group. +function openvpn_resync_gwgroup($gwgroupname = "") { + global $g, $config; + + if ($gwgroupname <> "") { + if (is_array($config['openvpn']['openvpn-server'])) { + foreach ($config['openvpn']['openvpn-server'] as & $settings) { + if ($gwgroupname == $settings['interface']) { + log_error("Resyncing OpenVPN for gateway group " . $gwgroupname . " server " . $settings["description"] . "."); + openvpn_resync('server', $settings); + } + } + } + + if (is_array($config['openvpn']['openvpn-client'])) { + foreach ($config['openvpn']['openvpn-client'] as & $settings) { + if ($gwgroupname == $settings['interface']) { + log_error("Resyncing OpenVPN for gateway group " . $gwgroupname . " client " . $settings["description"] . "."); + openvpn_resync('client', $settings); + } + } + } + + // Note: no need to resysnc Client Specific (csc) here, as changes to the OpenVPN real interface do not effect these. + + } else { + log_error("openvpn_resync_gwgroup called with null gwgroup parameter."); + } +} + +function openvpn_get_active_servers($type="multipoint") { + global $config, $g; + + $servers = array(); + if (is_array($config['openvpn']['openvpn-server'])) { + foreach ($config['openvpn']['openvpn-server'] as & $settings) { + if (empty($settings) || isset($settings['disable'])) { + continue; + } + + $prot = $settings['protocol']; + $port = $settings['local_port']; + + $server = array(); + $server['port'] = ($settings['local_port']) ? $settings['local_port'] : 1194; + $server['mode'] = $settings['mode']; + if ($settings['description']) { + $server['name'] = "{$settings['description']} {$prot}:{$port}"; + } else { + $server['name'] = "Server {$prot}:{$port}"; + } + $server['conns'] = array(); + $server['vpnid'] = $settings['vpnid']; + $server['mgmt'] = "server{$server['vpnid']}"; + $socket = "unix://{$g['varetc_path']}/openvpn/{$server['mgmt']}.sock"; + list($tn, $sm) = explode('/', $settings['tunnel_network']); + + if ((($server['mode'] == "p2p_shared_key") || ($sm >= 30)) && ($type == "p2p")) { + $servers[] = openvpn_get_client_status($server, $socket); + } elseif (($server['mode'] != "p2p_shared_key") && ($type == "multipoint") && ($sm < 30)) { + $servers[] = openvpn_get_server_status($server, $socket); + } + } + } + return $servers; +} + +function openvpn_get_server_status($server, $socket) { + $errval; + $errstr; + $fp = @stream_socket_client($socket, $errval, $errstr, 1); + if ($fp) { + stream_set_timeout($fp, 1); + + /* send our status request */ + fputs($fp, "status 2\n"); + + /* recv all response lines */ + while (!feof($fp)) { + + /* read the next line */ + $line = fgets($fp, 1024); + + $info = stream_get_meta_data($fp); + if ($info['timed_out']) { + break; + } + + /* parse header list line */ + if (strstr($line, "HEADER")) { + continue; + } + + /* parse end of output line */ + if (strstr($line, "END") || strstr($line, "ERROR")) { + break; + } + + /* parse client list line */ + if (strstr($line, "CLIENT_LIST")) { + $list = explode(",", $line); + $conn = array(); + $conn['common_name'] = $list[1]; + $conn['remote_host'] = $list[2]; + $conn['virtual_addr'] = $list[3]; + $conn['bytes_recv'] = $list[4]; + $conn['bytes_sent'] = $list[5]; + $conn['connect_time'] = $list[6]; + $server['conns'][] = $conn; + } + /* parse routing table lines */ + if (strstr($line, "ROUTING_TABLE")) { + $list = explode(",", $line); + $conn = array(); + $conn['virtual_addr'] = $list[1]; + $conn['common_name'] = $list[2]; + $conn['remote_host'] = $list[3]; + $conn['last_time'] = $list[4]; + $server['routes'][] = $conn; + } + } + + /* cleanup */ + fclose($fp); + } else { + $conn = array(); + $conn['common_name'] = "[error]"; + $conn['remote_host'] = "Unable to contact daemon"; + $conn['virtual_addr'] = "Service not running?"; + $conn['bytes_recv'] = 0; + $conn['bytes_sent'] = 0; + $conn['connect_time'] = 0; + $server['conns'][] = $conn; + } + return $server; +} + +function openvpn_get_active_clients() { + global $config, $g; + + $clients = array(); + if (is_array($config['openvpn']['openvpn-client'])) { + foreach ($config['openvpn']['openvpn-client'] as & $settings) { + + if (empty($settings) || isset($settings['disable'])) { + continue; + } + + $prot = $settings['protocol']; + $port = ($settings['local_port']) ? ":{$settings['local_port']}" : ""; + + $client = array(); + $client['port'] = $settings['local_port']; + if ($settings['description']) { + $client['name'] = "{$settings['description']} {$prot}{$port}"; + } else { + $client['name'] = "Client {$prot}{$port}"; + } + + $client['vpnid'] = $settings['vpnid']; + $client['mgmt'] = "client{$client['vpnid']}"; + $socket = "unix://{$g['varetc_path']}/openvpn/{$client['mgmt']}.sock"; + $client['status'] = "down"; + + $clients[] = openvpn_get_client_status($client, $socket); + } + } + return $clients; +} + +function openvpn_get_client_status($client, $socket) { + $errval; + $errstr; + $fp = @stream_socket_client($socket, $errval, $errstr, 1); + if ($fp) { + stream_set_timeout($fp, 1); + /* send our status request */ + fputs($fp, "state 1\n"); + + /* recv all response lines */ + while (!feof($fp)) { + /* read the next line */ + $line = fgets($fp, 1024); + + $info = stream_get_meta_data($fp); + if ($info['timed_out']) { + break; + } + + /* Get the client state */ + if (strstr($line, "CONNECTED")) { + $client['status'] = "up"; + $list = explode(",", $line); + + $client['connect_time'] = date("D M j G:i:s Y", $list[0]); + $client['virtual_addr'] = $list[3]; + $client['remote_host'] = $list[4]; + } + if (strstr($line, "CONNECTING")) { + $client['status'] = "connecting"; + } + if (strstr($line, "ASSIGN_IP")) { + $client['status'] = "waiting"; + $list = explode(",", $line); + + $client['connect_time'] = date("D M j G:i:s Y", $list[0]); + $client['virtual_addr'] = $list[3]; + } + if (strstr($line, "RECONNECTING")) { + $client['status'] = "reconnecting"; + $list = explode(",", $line); + + $client['connect_time'] = date("D M j G:i:s Y", $list[0]); + $client['status'] .= "; " . $list[2]; + } + /* parse end of output line */ + if (strstr($line, "END") || strstr($line, "ERROR")) { + break; + } + } + + /* If up, get read/write stats */ + if (strcmp($client['status'], "up") == 0) { + fputs($fp, "status 2\n"); + /* recv all response lines */ + while (!feof($fp)) { + /* read the next line */ + $line = fgets($fp, 1024); + + $info = stream_get_meta_data($fp); + if ($info['timed_out']) { + break; + } + + if (strstr($line, "TCP/UDP read bytes")) { + $list = explode(",", $line); + $client['bytes_recv'] = $list[1]; + } + + if (strstr($line, "TCP/UDP write bytes")) { + $list = explode(",", $line); + $client['bytes_sent'] = $list[1]; + } + + /* parse end of output line */ + if (strstr($line, "END")) { + break; + } + } + } + + fclose($fp); + + } else { + $DisplayNote=true; + $client['remote_host'] = "Unable to contact daemon"; + $client['virtual_addr'] = "Service not running?"; + $client['bytes_recv'] = 0; + $client['bytes_sent'] = 0; + $client['connect_time'] = 0; + } + return $client; +} + +function openvpn_refresh_crls() { + global $g, $config; + + openvpn_create_dirs(); + + if (is_array($config['openvpn']['openvpn-server'])) { + foreach ($config['openvpn']['openvpn-server'] as $settings) { + if (empty($settings)) { + continue; + } + if (isset($settings['disable'])) { + continue; + } + // Write the settings for the keys + switch ($settings['mode']) { + case 'p2p_tls': + case 'server_tls': + case 'server_tls_user': + case 'server_user': + if (!empty($settings['crlref'])) { + $crl = lookup_crl($settings['crlref']); + crl_update($crl); + $fpath = $g['varetc_path']."/openvpn/server{$settings['vpnid']}.crl-verify"; + file_put_contents($fpath, base64_decode($crl['text'])); + @chmod($fpath, 0644); + } + break; + } + } + } +} + +function openvpn_create_dirs() { + global $g; + if (!is_dir("{$g['varetc_path']}/openvpn")) { + safe_mkdir("{$g['varetc_path']}/openvpn", 0750); + } + if (!is_dir("{$g['varetc_path']}/openvpn-csc")) { + safe_mkdir("{$g['varetc_path']}/openvpn-csc", 0750); + } +} + +function openvpn_get_interface_ip($ip, $mask) { + $baselong = ip2long32($ip) & ip2long($mask); + $ip1 = long2ip32($baselong + 1); + $ip2 = long2ip32($baselong + 2); + return array($ip1, $ip2); +} + +function openvpn_get_interface_ipv6($ipv6, $prefix) { + $basev6 = gen_subnetv6($ipv6, $prefix); + // Is there a better way to do this math? + $ipv6_arr = explode(':', $basev6); + $last = hexdec(array_pop($ipv6_arr)); + $ipv6_1 = Net_IPv6::compress(Net_IPv6::uncompress(implode(':', $ipv6_arr) . ':' . dechex($last + 1))); + $ipv6_2 = Net_IPv6::compress(Net_IPv6::uncompress(implode(':', $ipv6_arr) . ':' . dechex($last + 2))); + return array($ipv6_1, $ipv6_2); +} + +function openvpn_clear_route($mode, $settings) { + if (empty($settings['tunnel_network'])) { + return; + } + list($ip, $cidr) = explode('/', $settings['tunnel_network']); + $mask = gen_subnet_mask($cidr); + $clear_route = false; + + switch ($settings['mode']) { + case 'shared_key': + $clear_route = true; + break; + case 'p2p_tls': + case 'p2p_shared_key': + if ($cidr == 30) { + $clear_route = true; + } + break; + } + + if ($clear_route && !empty($ip) && !empty($mask)) { + list($ip1, $ip2) = openvpn_get_interface_ip($ip, $mask); + $ip_to_clear = ($mode == "server") ? $ip1 : $ip2; + /* XXX: Family for route? */ + mwexec("/sbin/route -q delete {$ip_to_clear}"); + } +} + +function openvpn_gen_routes($value, $ipproto = "ipv4", $push = false, $iroute = false) { + $routes = ""; + if (empty($value)) { + return ""; + } + $networks = explode(',', $value); + + foreach ($networks as $network) { + if ($ipproto == "ipv4") { + $route = openvpn_gen_route_ipv4($network, $iroute); + } else { + $route = openvpn_gen_route_ipv6($network, $iroute); + } + + if ($push) { + $routes .= "push \"{$route}\"\n"; + } else { + $routes .= "{$route}\n"; + } + } + return $routes; +} + +function openvpn_gen_route_ipv4($network, $iroute = false) { + $i = ($iroute) ? "i" : ""; + list($ip, $mask) = explode('/', trim($network)); + $mask = gen_subnet_mask($mask); + return "{$i}route $ip $mask"; +} + +function openvpn_gen_route_ipv6($network, $iroute = false) { + $i = ($iroute) ? "i" : ""; + list($ipv6, $prefix) = explode('/', trim($network)); + if (empty($prefix)) { + $prefix = "128"; + } + return "{$i}route-ipv6 ${ipv6}/${prefix}"; +} + +function openvpn_get_settings($mode, $vpnid) { + global $config; + + if (is_array($config['openvpn']['openvpn-server'])) { + foreach ($config['openvpn']['openvpn-server'] as $settings) { + if (isset($settings['disable'])) { + continue; + } + + if ($vpnid != 0 && $vpnid == $settings['vpnid']) { + return $settings; + } + } + } + + if (is_array($config['openvpn']['openvpn-client'])) { + foreach ($config['openvpn']['openvpn-client'] as $settings) { + if (isset($settings['disable'])) { + continue; + } + + if ($vpnid != 0 && $vpnid == $settings['vpnid']) { + return $settings; + } + } + } + + return array(); +} + +function openvpn_restart_by_vpnid($mode, $vpnid) { + $settings = openvpn_get_settings($mode, $vpnid); + openvpn_restart($mode, $settings); +} + +?> |
