Copyright (C) 2008 Shrew Soft Inc
Copyright (C) 2010 Ermal Lu�i
All rights reserved.
Parts of this code was originally based on vpn_ipsec_sad.php
Copyright (C) 2003-2004 Manuel Kasper
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.
*/
require_once("globals.inc");
require_once("openvpn.inc");
function openvpn_client_export_install() {
conf_mount_rw();
$tarpath = "/usr/local/pkg/openvpn-client-export.tgz";
$phpfile = "vpn_openvpn_export.php";
$ovpndir = "/usr/local/share/openvpn";
$workdir = "{$ovpndir}/client-export";
if (!is_dir($workdir))
mkdir($workdir, 0777, true);
exec("/usr/bin/tar zxf {$tarpath} -C {$ovpndir}");
conf_mount_ro();
}
function openvpn_client_export_deinstall() {
conf_mount_rw();
$phpfile = "vpn_openvpn_export.php";
$phpfile2 = "vpn_openvpn_export_shared.php";
$ovpndir = "/usr/local/share/openvpn";
$workdir = "{$ovpndir}/client-export";
unlink_if_exists("/usr/local/www/{$phpfile}");
unlink_if_exists("/usr/local/www/{$phpfile2}");
exec("/bin/rm -r {$workdir}");
conf_mount_ro();
}
function openvpn_client_export_prefix($srvid) {
global $config;
// lookup server settings
$settings = $config['openvpn']['openvpn-server'][$srvid];
if (empty($settings))
return false;
if ($settings['disable'])
return false;
$host = empty($config['system']['hostname']) ? "openvpn" : $config['system']['hostname'];
$prot = ($settings['protocol'] == 'UDP' ? 'udp' : $settings['protocol']);
$port = $settings['local_port'];
return "{$host}-{$prot}-{$port}";
}
function openvpn_client_pem_to_pk12($outpath, $outpass, $crtpath, $keypath, $capath = false) {
$eoutpath = escapeshellarg($outpath);
$eoutpass = escapeshellarg($outpass);
$ecrtpath = escapeshellarg($crtpath);
$ekeypath = escapeshellarg($keypath);
if ($capath) {
$ecapath = escapeshellarg($capath);
exec("/usr/bin/openssl pkcs12 -export -in {$ecrtpath} -inkey {$ekeypath} -certfile {$ecapath} -out {$eoutpath} -passout pass:{$eoutpass}");
} else
exec("/usr/bin/openssl pkcs12 -export -in {$ecrtpath} -inkey {$ekeypath} -out {$eoutpath} -passout pass:{$eoutpass}");
unlink($crtpath);
unlink($keypath);
if ($capath)
unlink($capath);
}
function openvpn_client_export_validate_config($srvid, $usrid, $crtid) {
global $config, $g, $input_errors;
// lookup server settings
$settings = $config['openvpn']['openvpn-server'][$srvid];
if (empty($settings)) {
$input_errors[] = "Could not locate server configuration.";
return false;
}
if ($settings['disable']) {
$input_errors[] = "You cannot export for disabled servers.";
return false;
}
// lookup server certificate info
$server_cert = lookup_cert($settings['certref']);
$server_ca = lookup_ca($server_cert['caref']);
if (!$server_cert || !$server_ca) {
$input_errors[] = "Could not locate certificate.";
return false;
}
if (function_exists("cert_get_cn")) {
$servercn = cert_get_cn($server_cert['crt']);
}
// lookup user info
if (is_numeric($usrid)) {
$user = $config['system']['user'][$usrid];
if (!$user) {
$input_errors[] = "Could not find user settings.";
return false;
}
}
// lookup user certificate info
if ($settings['mode'] == "server_tls_user") {
if ($settings['authmode'] == "Local Database") {
$cert = $user['cert'][$crtid];
} else {
$cert = $config['cert'][$crtid];
}
if (!$cert)
return false;
// If $cert is not an array, it's a certref not a cert.
if (!is_array($cert))
$cert = lookup_cert($cert);
} elseif (($settings['mode'] == "server_tls") || (($settings['mode'] == "server_tls_user") && ($settings['authmode'] != "Local Database"))) {
$cert = $config['cert'][$crtid];
if (!$cert)
return false;
} else
$nokeys = true;
return array($settings, $server_cert, $server_ca, $servercn, $user, $cert, $nokeys);
}
function openvpn_client_export_config($srvid, $usrid, $crtid, $useaddr, $quoteservercn, $usetoken, $nokeys = false, $proxy, $expformat = "baseconf", $outpass = "", $skiptls=false, $doslines=false, $advancedoptions = "") {
global $config, $input_errors, $g;
$nl = ($doslines) ? "\r\n" : "\n";
$validconfig = openvpn_client_export_validate_config($srvid, $usrid, $crtid);
if ($validconfig) {
list($settings, $server_cert, $server_ca, $servercn, $user, $cert, $nokeys) = $validconfig;
} else {
return false;
}
// determine basic variables
if ($useaddr == "serveraddr") {
$interface = $settings['interface'];
if (!empty($settings['ipaddr']) && is_ipaddr($settings['ipaddr'])) {
$server_host = $settings['ipaddr'];
} else {
if (!$interface || ($interface == "any"))
$interface = "wan";
$server_host = get_interface_ip($interface);
}
} else if ($useaddr == "serverhostname" || empty($useaddr)) {
$server_host = empty($config['system']['hostname']) ? "" : "{$config['system']['hostname']}.";
$server_host .= "{$config['system']['domain']}";
} else
$server_host = $useaddr;
$server_port = $settings['local_port'];
$proto = (strtoupper($settings['protocol']) == 'UDP' ? 'udp' : "tcp-client");
$cipher = $settings['crypto'];
// add basic settings
$devmode = empty($settings['dev_mode']) ? "tun" : $settings['dev_mode'];
$conf = "dev {$devmode}{$nl}";
if(! empty($settings['tunnel_networkv6'])) {
$conf .= "tun-ipv6{$nl}";
}
$conf .= "persist-tun{$nl}";
$conf .= "persist-key{$nl}";
$conf .= "proto {$proto}{$nl}";
$conf .= "cipher {$cipher}{$nl}";
$conf .= "tls-client{$nl}";
$conf .= "client{$nl}";
$conf .= "resolv-retry infinite{$nl}";
$conf .= "remote {$server_host} {$server_port}{$nl}";
if (!empty($servercn)) {
$qw = ($quoteservercn) ? "\"" : "";
$conf .= "tls-remote {$qw}{$servercn}{$qw}{$nl}";
}
if (!empty($proxy)) {
if ($proto == "udp") {
$input_errors[] = "This server uses UDP protocol and cannot communicate with HTTP proxy.";
return;
}
$conf .= "http-proxy {$proxy['ip']} {$proxy['port']} ";
if ($proxy['proxy_authtype'] != "none") {
if (!isset($proxy['passwdfile']))
$proxy['passwdfile'] = openvpn_client_export_prefix($srvid) . "-proxy";
$conf .= " {$proxy['passwdfile']} {$proxy['proxy_authtype']}";
}
$conf .= "{$nl}";
}
// add user auth settings
switch($settings['mode']) {
case 'server_user':
case 'server_tls_user':
$conf .= "auth-user-pass{$nl}";
break;
}
// add key settings
$prefix = openvpn_client_export_prefix($srvid);
$cafile = "{$prefix}-ca.crt";
if($nokeys == false) {
if ($expformat == "inline") {
$conf .= "ca [inline]{$nl}";
$conf .= "cert [inline]{$nl}";
$conf .= "key [inline]{$nl}";
} elseif ($expformat == "yealink_t28") {
$conf .= "ca /yealink/config/openvpn/keys/ca.crt{$nl}";
$conf .= "cert /yealink/config/openvpn/keys/client1.crt{$nl}";
$conf .= "key /yealink/config/openvpn/keys/client1.key{$nl}";
} elseif ($expformat == "yealink_t38g") {
$conf .= "ca /phone/config/openvpn/keys/ca.crt{$nl}";
$conf .= "cert /phone/config/openvpn/keys/client1.crt{$nl}";
$conf .= "key /phone/config/openvpn/keys/client1.key{$nl}";
} elseif ($expformat == "yealink_t38g2") {
$conf .= "ca /config/openvpn/keys/ca.crt{$nl}";
$conf .= "cert /config/openvpn/keys/client1.crt{$nl}";
$conf .= "key /config/openvpn/keys/client1.key{$nl}";
} elseif ($expformat == "snom") {
$conf .= "ca /openvpn/ca.crt{$nl}";
$conf .= "cert /openvpn/phone1.crt{$nl}";
$conf .= "key /openvpn/phone1.key{$nl}";
} elseif ($usetoken) {
$conf .= "ca {$cafile}{$nl}";
$conf .= "cryptoapicert \"SUBJ:{$user['name']}\"{$nl}";
} else {
$conf .= "pkcs12 {$prefix}.p12{$nl}";
}
} else if ($settings['mode'] == "server_user") {
if ($expformat == "inline")
$conf .= "ca [inline]{$nl}";
else
$conf .= "ca {$cafile}{$nl}";
}
if ($settings['tls'] && !$skiptls) {
if ($expformat == "inline")
$conf .= "tls-auth [inline] 1{$nl}";
elseif ($expformat == "yealink_t28")
$conf .= "tls-auth /yealink/config/openvpn/keys/ta.key 1{$nl}";
elseif ($expformat == "yealink_t38g")
$conf .= "tls-auth /phone/config/openvpn/keys/ta.key 1{$nl}";
elseif ($expformat == "yealink_t38g2")
$conf .= "tls-auth /config/openvpn/keys/ta.key 1{$nl}";
elseif ($expformat == "snom")
$conf .= "tls-auth /openvpn/ta.key 1{$nl}";
else
$conf .= "tls-auth {$prefix}-tls.key 1{$nl}";
}
// Prevent MITM attacks by verifying the server certificate.
// - Disable for now, it requires the server cert to include special options
//$conf .= "remote-cert-tls server{$nl}";
// Extra protection for the server cert, if it's supported
if (function_exists("cert_get_purpose")) {
if (is_array($server_cert) && ($server_cert['crt'])) {
$purpose = cert_get_purpose($server_cert['crt'], true);
if ($purpose['server'] == 'Yes')
$conf .= "ns-cert-type server{$nl}";
}
}
// add optional settings
if ($settings['compression'])
$conf .= "comp-lzo{$nl}";
if ($settings['passtos'])
$conf .= "passtos{$nl}";
// add advanced options
$advancedoptions = str_replace(";", $nl, $advancedoptions);
$conf .= $advancedoptions;
$conf .= $nl;
switch ($expformat) {
case "zip":
// create template directory
$tempdir = "{$g['tmp_path']}/{$prefix}";
mkdir($tempdir, 0700, true);
file_put_contents("{$tempdir}/{$prefix}.ovpn", $conf);
$cafile = "{$tempdir}/{$cafile}";
file_put_contents("{$cafile}", base64_decode($server_ca['crt']));
if ($settings['tls']) {
$tlsfile = "{$tempdir}/{$prefix}-tls.key";
file_put_contents($tlsfile, base64_decode($settings['tls']));
}
// write key files
if ($settings['mode'] != "server_user") {
$crtfile = "{$tempdir}/{$prefix}-cert.crt";
file_put_contents($crtfile, base64_decode($cert['crt']));
$keyfile = "{$tempdir}/{$prefix}.key";
file_put_contents($keyfile, base64_decode($cert['prv']));
// convert to pkcs12 format
$p12file = "{$tempdir}/{$prefix}.p12";
if ($usetoken)
openvpn_client_pem_to_pk12($p12file, $outpass, $crtfile, $keyfile);
else
openvpn_client_pem_to_pk12($p12file, $outpass, $crtfile, $keyfile, $cafile);
}
exec("cd {$tempdir}/.. && /usr/local/bin/zip -r {$g['tmp_path']}/{$prefix}-config.zip {$prefix}");
// Remove temporary directory
exec("rm -rf {$tempdir}");
return $g['tmp_path'] . "/{$prefix}-config.zip";
break;
case "inline":
// Inline CA
$conf .= "{$nl}" . base64_decode($server_ca['crt']) . "{$nl}";
if ($settings['mode'] != "server_user") {
// Inline Cert
$conf .= "{$nl}" . base64_decode($cert['crt']) . "{$nl}";
// Inline Key
$conf .= "{$nl}" . base64_decode($cert['prv']) . "{$nl}";
}
// Inline TLS
if ($settings['tls']) {
$conf .= "{$nl}" . base64_decode($settings['tls']) . "{$nl} key-direction 1{$nl}";
}
return $conf;
break;
case "yealink_t28":
case "yealink_t38g":
case "yealink_t38g2":
// create template directory
$tempdir = "{$g['tmp_path']}/{$prefix}";
$keydir = "{$tempdir}/keys";
mkdir($tempdir, 0700, true);
mkdir($keydir, 0700, true);
file_put_contents("{$tempdir}/vpn.cnf", $conf);
$cafile = "{$keydir}/ca.crt";
file_put_contents("{$cafile}", base64_decode($server_ca['crt']));
if ($settings['tls']) {
$tlsfile = "{$keydir}/ta.key";
file_put_contents($tlsfile, base64_decode($settings['tls']));
}
// write key files
if ($settings['mode'] != "server_user") {
$crtfile = "{$keydir}/client1.crt";
file_put_contents($crtfile, base64_decode($cert['crt']));
$keyfile = "{$keydir}/client1.key";
file_put_contents($keyfile, base64_decode($cert['prv']));
}
exec("tar -C {$tempdir} -cf {$g['tmp_path']}/client.tar ./keys ./vpn.cnf");
// Remove temporary directory
exec("rm -rf {$tempdir}");
return $g['tmp_path'] . "/client.tar";
break;
case "snom":
// create template directory
$tempdir = "{$g['tmp_path']}/{$prefix}";
mkdir($tempdir, 0700, true);
file_put_contents("{$tempdir}/vpn.cnf", $conf);
$cafile = "{$tempdir}/ca.crt";
file_put_contents("{$cafile}", base64_decode($server_ca['crt']));
if ($settings['tls']) {
$tlsfile = "{$tempdir}/ta.key";
file_put_contents($tlsfile, base64_decode($settings['tls']));
}
// write key files
if ($settings['mode'] != "server_user") {
$crtfile = "{$tempdir}/phone1.crt";
file_put_contents($crtfile, base64_decode($cert['crt']));
$keyfile = "{$tempdir}/phone1.key";
file_put_contents($keyfile, base64_decode($cert['prv']));
}
exec("cd {$tempdir}/ && tar -cf {$g['tmp_path']}/vpnclient.tar *");
// Remove temporary directory
exec("rm -rf {$tempdir}");
return $g['tmp_path'] . "/vpnclient.tar";
break;
default:
return $conf;
}
}
function openvpn_client_export_installer($srvid, $usrid, $crtid, $useaddr, $quoteservercn, $usetoken, $outpass, $proxy, $advancedoptions, $openvpn_version = "2.1") {
global $config, $g, $input_errors;
$uname_p = trim(exec("uname -p"));
switch ($openvpn_version) {
case "2.3-x86":
$client_install_exe = "openvpn-install-2.3-i686.exe";
break;
case "2.3-x64":
$client_install_exe = "openvpn-install-2.3-x86_64.exe";
break;
default:
$client_install_exe = "openvpn-install-2.2.exe";
}
$ovpndir = "/usr/local/share/openvpn";
$workdir = "{$ovpndir}/client-export";
if (!file_exists($workdir . "/template/{$client_install_exe}"))
openvpn_client_export_install();
exec("/bin/cp {$workdir}/template/{$client_install_exe} {$workdir}/template/openvpn-install.exe");
$validconfig = openvpn_client_export_validate_config($srvid, $usrid, $crtid);
if ($validconfig) {
list($settings, $server_cert, $server_ca, $servercn, $user, $cert, $nokeys) = $validconfig;
} else {
return false;
}
// create template directory
$tempdir = $g['tmp_path'] . "/openvpn-export-".uniqid();
mkdir($tempdir, 0700, true);
// create config directory
$confdir = "{$tempdir}/config";
if (!is_dir($conf_dir))
mkdir($confdir, 0700, true);
// copy the template directory
exec("cp -r {$workdir}/template/* {$tempdir}");
// write cofiguration file
$prefix = openvpn_client_export_prefix($srvid);
$cfgfile = "{$confdir}/{$prefix}-config.ovpn";
if (!empty($proxy) && $proxy['proxy_authtype'] != "none") {
$proxy['passwdfile'] = "{$prefix}-password";
$pwdfle = "{$proxy['user']}\r\n";
$pwdfle .= "{$proxy['password']}\r\n";
file_put_contents("{$confdir}/{$proxy['passwdfile']}", $pwdfle);
}
$conf = openvpn_client_export_config($srvid, $usrid, $crtid, $useaddr, $quoteservercn, $usetoken, $nokeys, $proxy, "", "baseconf", false, true, $advancedoptions);
if (!$conf) {
$input_errors[] = "Could not create a config to export.";
return false;
}
file_put_contents($cfgfile, $conf);
$cafile = "{$tempdir}/config/{$prefix}-ca.crt";
file_put_contents($cafile, base64_decode($server_ca['crt']));
if ($settings['tls']) {
$tlsfile = "{$tempdir}/config/{$prefix}-tls.key";
file_put_contents($tlsfile, base64_decode($settings['tls']));
}
// write key files
if ($settings['mode'] != "server_user") {
$crtfile = "{$tempdir}/config/{$prefix}-{$user['name']}.crt";
file_put_contents($crtfile, base64_decode($cert['crt']));
$keyfile = "{$tempdir}/config/{$prefix}-{$user['name']}.key";
file_put_contents($keyfile, base64_decode($cert['prv']));
// convert to pkcs12 format
$p12file = "{$tempdir}/config/{$prefix}.p12";
if ($usetoken)
openvpn_client_pem_to_pk12($p12file, $outpass, $crtfile, $keyfile);
else
openvpn_client_pem_to_pk12($p12file, $outpass, $crtfile, $keyfile, $cafile);
}
// 7zip the configuration data
chdir($tempdir);
$files = "config ";
$files .= "procchain.exe ";
$files .= "openvpn-install.exe ";
$files .= "openvpn-postinstall.exe ";
if ($usetoken)
$files .= "procchain-import";
else
$files .= "procchain-standard";
if(file_exists("/usr/pbi/p7zip-{$uname_p}/bin/7z"))
exec("/usr/pbi/p7zip-{$uname_p}/bin/7z -y a archive.7z {$files}");
else
exec("/usr/local/libexec/p7zip/7z -y a archive.7z {$files}");
// create the final installer
$outfile = "{$tempdir}-install.exe";
chdir($g['tmp_path']);
if ($usetoken)
exec("/bin/cat {$tempdir}/7zS.sfx {$tempdir}/config-import {$tempdir}/archive.7z > {$outfile}");
else
exec("/bin/cat {$tempdir}/7zS.sfx {$tempdir}/config-standard {$tempdir}/archive.7z > {$outfile}");
// cleanup
exec("/bin/rm -r {$tempdir}");
return $outfile;
}
function viscosity_openvpn_client_config_exporter($srvid, $usrid, $crtid, $useaddr, $quoteservercn, $usetoken, $outpass, $proxy, $advancedoptions) {
global $config, $g;
$uname_p = trim(exec("uname -p"));
$ovpndir = "/usr/local/share/openvpn/";
if (!file_exists($workdir . "/template/openvpn-install.exe"))
openvpn_client_export_install();
$uniq = uniqid();
$tempdir = $g['tmp_path'] . "/openvpn-export-" . $uniq;
$zipfile = $g['tmp_path'] . "/{$uniq}-Viscosity.visc.zip";
$validconfig = openvpn_client_export_validate_config($srvid, $usrid, $crtid);
if ($validconfig) {
list($settings, $server_cert, $server_ca, $servercn, $user, $cert, $nokeys) = $validconfig;
} else {
return false;
}
// create template directory
mkdir($tempdir, 0700, true);
mkdir($tempdir . "/Viscosity.visc", 0700, true);
// Append new Viscosity.visc directory on top
$tempdir = $tempdir . "/Viscosity.visc/";
// write cofiguration file
$prefix = openvpn_client_export_prefix($srvid);
if (!empty($proxy) && $proxy['proxy_authtype'] != "none") {
$proxy['passwdfile'] = "config-password";
$pwdfle = "{$proxy['user']}\n";
$pwdfle .= "{$proxy['password']}\n";
file_put_contents("{$tempdir}/{$proxy['passwdfile']}", $pwdfle);
}
$conf = openvpn_client_export_config($srvid, $usrid, $crtid, $useaddr, $quoteservercn, $usetoken, true, $proxy, "baseconf", "", true, $advancedoptions);
if (!$conf)
return false;
// We need to nuke the ca line from the above config if it exists.
$conf = explode("\n", $conf);
for ($i=0; $i < count($conf); $i++) {
if (substr($conf[$i], 0, 3) == "ca ")
unset($conf[$i]);
}
$conf = implode("\n", $conf);
$friendly_name = $settings['description'];
$visc_settings = <<