openvpn-client-export.inc 30.7 KB
Newer Older
1
<?php
2

3 4 5 6 7
/*
	Copyright (C) 2009 Scott Ullrich <sullrich@gmail.com>
	Copyright (C) 2008 Shrew Soft Inc
	Copyright (C) 2010 Ermal Luci
	Copyright (C) 2003-2004 Manuel Kasper
8
	All rights reserved.
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

	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.
*/

global $current_openvpn_version, $current_openvpn_version_rev;
$current_openvpn_version     = "2.3.6";
$current_openvpn_version_rev = "01";

function openvpn_client_export_prefix($srvid, $usrid = null, $crtid = null) {
	global $config;

	// lookup server settings
	$settings = $config['openvpn']['openvpn-server'][$srvid];
	if (empty($settings))
		return false;
43
	if (!empty($settings['disable'])) {
44
		return false;
45
	}
46 47 48 49

	$host = empty($config['system']['hostname']) ? "openvpn" : $config['system']['hostname'];
	$prot = ($settings['protocol'] == 'UDP' ? 'udp' : $settings['protocol']);
	$port = $settings['local_port'];
50

51
	$filename_addition = "";
52
	if ($usrid && is_numeric($usrid)) {
53
		$filename_addition = "-".$config['system']['user'][$usrid]['name'];
54
	} elseif ($crtid && is_numeric($crtid)) {
55
		$filename_addition = "-" . str_replace(' ', '_', cert_get_cn($config['cert'][$crtid]['crt']));
56
	}
57 58 59 60 61 62 63 64 65 66 67

	return "{$host}-{$prot}-{$port}{$filename_addition}";
}

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);
68
		exec("/usr/local/bin/openssl pkcs12 -export -in {$ecrtpath} -inkey {$ekeypath} -certfile {$ecapath} -out {$eoutpath} -passout pass:{$eoutpass}");
69
	} else
70
		exec("/usr/local/bin/openssl pkcs12 -export -in {$ecrtpath} -inkey {$ekeypath} -out {$eoutpath} -passout pass:{$eoutpass}");
71 72 73 74 75 76 77

	unlink($crtpath);
	unlink($keypath);
	if ($capath)
		unlink($capath);
}

78 79 80
function openvpn_client_export_validate_config($srvid, $usrid, $crtid)
{
	global $config, $input_errors;
81
	$nokeys = false;
82 83 84 85

	// lookup server settings
	$settings = $config['openvpn']['openvpn-server'][$srvid];
	if (empty($settings)) {
86
		$input_errors[] = gettext("Could not locate server configuration.");
87 88
		return false;
	}
89
	if (!empty($settings['disable'])) {
90
		$input_errors[] = gettext("You cannot export for disabled servers.");
91 92 93 94 95
		return false;
	}

	// lookup server certificate info
	$server_cert = lookup_cert($settings['certref']);
96
	if (!$server_cert)
97
	{
98
		$input_errors[] = gettext("Could not locate server certificate.");
99
	} else {
100 101
		$server_ca = ca_chain($server_cert);
		if (empty($server_ca)) {
102
			$input_errors[] = gettext("Could not locate the CA reference for the server certificate.");
103
		}
104
		$servercn = cert_get_cn($server_cert['crt']);
105 106 107 108 109 110
	}

	// lookup user info
	if (is_numeric($usrid)) {
		$user = $config['system']['user'][$usrid];
		if (!$user) {
111
			$input_errors[] = gettext("Could not find user settings.");
112 113 114 115 116 117 118 119 120 121
		}
	}

	// lookup user certificate info
	if ($settings['mode'] == "server_tls_user") {
		if ($settings['authmode'] == "Local Database") {
			$cert = $user['cert'][$crtid];
		} else {
			$cert = $config['cert'][$crtid];
		}
122 123
		if (!$cert) {
			$input_errors[] = gettext("Could not find client certificate.");
124 125 126 127 128 129 130 131
		} else {
			// 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)
132
			$input_errors[] = gettext("Could not find client certificate.");
133 134 135 136 137
	} else
		$nokeys = true;

	if ($input_errors)
		return false;
138

139 140 141
	return array($settings, $server_cert, $server_ca, $servercn, $user, $cert, $nokeys);
}

142 143 144
function openvpn_client_export_config($srvid, $usrid, $crtid, $useaddr, $verifyservercn, $randomlocalport, $usetoken, $nokeys = false, $proxy, $expformat = "baseconf", $outpass = "", $skiptls=false, $doslines=false, $openvpnmanager, $advancedoptions = "")
{
	global $config, $input_errors;
145 146 147 148 149

	$nl = ($doslines) ? "\r\n" : "\n";
	$conf = "";

	$validconfig = openvpn_client_export_validate_config($srvid, $usrid, $crtid);
150
	if (!$validconfig) {
151 152 153
		return false;
	}

154 155
	list($settings, $server_cert, $server_ca, $servercn, $user, $cert, $nokeys) = $validconfig;

156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209
	// determine basic variables
	$remotes = openvpn_client_export_build_remote_lines($settings, $useaddr, $interface, $expformat, $nl);
	$server_port = $settings['local_port'];
	$cipher = $settings['crypto'];
	$digest = !empty($settings['digest']) ? $settings['digest'] : "SHA1";

	// add basic settings
	$devmode = empty($settings['dev_mode']) ? "tun" : $settings['dev_mode'];
	if (($expformat != "inlinedroid") && ($expformat != "inlineios"))
		$conf .= "dev {$devmode}{$nl}";
	if(!empty($settings['tunnel_networkv6']) && ($expformat != "inlinedroid") && ($expformat != "inlineios")) {
		$conf .= "tun-ipv6{$nl}";
	}
	$conf .= "persist-tun{$nl}";
	$conf .= "persist-key{$nl}";

//	if ((($expformat != "inlinedroid") && ($expformat != "inlineios")) && ($proto == "tcp"))
//		$conf .= "proto tcp-client{$nl}";
	$conf .= "cipher {$cipher}{$nl}";
	$conf .= "auth {$digest}{$nl}";
	$conf .= "tls-client{$nl}";
	$conf .= "client{$nl}";
	if (($expformat != "inlinedroid") && ($expformat != "inlineios"))
		$conf .= "resolv-retry infinite{$nl}";
	$conf .= "$remotes{$nl}";

	/* Use a random local port, otherwise two clients will conflict if they run at the same time.
		May not be supported on older clients (Released before May 2010) */
	if (($randomlocalport != 0) && (substr($expformat, 0, 7) != "yealink") && ($expformat != "snom"))
		$conf .= "lport 0{$nl}";

	/* This line can cause problems with auth-only setups and also with Yealink/Snom phones
		since they are stuck on an older OpenVPN version that does not support this feature. */
	if (!empty($servercn) && !$nokeys) {
		switch ($verifyservercn) {
			case "none":
				break;
			case "tls-remote":
				$conf .= "tls-remote {$servercn}{$nl}";
				break;
			case "tls-remote-quote":
				$conf .= "tls-remote \"{$servercn}\"{$nl}";
				break;
			default:
				if ((substr($expformat, 0, 7) != "yealink") && ($expformat != "snom")) {
					$conf .= "verify-x509-name \"{$servercn}\" name{$nl}";
				}
		}
	}

	if (!empty($proxy)) {
		if ($proxy['proxy_type'] == "http") {

			if (strtoupper(substr($settings['protocol'], 0, 3)) == "UDP") {
210
				$input_errors[] = gettext("This server uses UDP protocol and cannot communicate with HTTP proxy.");
211 212 213 214
				return;
			}
			$conf .= "http-proxy {$proxy['ip']} {$proxy['port']} ";
		}
215
		if ($proxy['proxy_type'] == "socks")
216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280
			$conf .= "socks-proxy {$proxy['ip']} {$proxy['port']} ";
		if ($proxy['proxy_authtype'] != "none") {
			if (!isset($proxy['passwdfile']))
				$proxy['passwdfile'] = openvpn_client_export_prefix($srvid, $usrid, $crtid) . "-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, $usrid, $crtid);
	$cafile = "{$prefix}-ca.crt";
	if($nokeys == false) {
		if ($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']}\"{$nl}";
		} elseif (substr($expformat, 0, 6) != "inline") {
			$conf .= "pkcs12 {$prefix}.p12{$nl}";
		}
	} else if ($settings['mode'] == "server_user") {
		if (substr($expformat, 0, 6) != "inline")
			$conf .= "ca {$cafile}{$nl}";
	}

	if ($settings['tls'] && !$skiptls) {
		if ($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}";
		elseif (substr($expformat, 0, 6) != "inline")
			$conf .= "tls-auth {$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}";

281 282 283 284
	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}";
285 286 287 288 289
		}
	}

	// add optional settings
	if (!empty($settings['compression'])) {
290
		$conf .= "comp-lzo {$settings['compression']}{$nl}";
291 292
	}

293
	if ($settings['passtos']) {
294
		$conf .= "passtos{$nl}";
295
	}
296

297
	if ($openvpnmanager) {
298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317
		if (!empty($settings['client_mgmt_port'])) {
			$client_mgmt_port = $settings['client_mgmt_port'];
		} else {
			$client_mgmt_port = 166;
		}
		$conf .= $nl;
		$conf .= "# dont terminate service process on wrong password, ask again{$nl}";
		$conf .= "auth-retry interact{$nl}";
		$conf .= "# open management channel{$nl}";
		$conf .= "management 127.0.0.1 {$client_mgmt_port}{$nl}";
		$conf .= "# wait for management to explicitly start connection{$nl}";
		$conf .= "management-hold{$nl}";
		$conf .= "# query management channel for user/pass{$nl}";
		$conf .= "management-query-passwords{$nl}";
		$conf .= "# disconnect VPN when management program connection is closed{$nl}";
		$conf .= "management-signal{$nl}";
		$conf .= "# forget password when management disconnects{$nl}";
		$conf .= "management-forget-disconnect{$nl}";
		$conf .= $nl;
	};
318

319 320 321 322 323 324 325 326 327 328
	// add advanced options
	$advancedoptions = str_replace("\r\n", "\n", $advancedoptions);
	$advancedoptions = str_replace("\n", $nl, $advancedoptions);
	$advancedoptions = str_replace(";", $nl, $advancedoptions);
	$conf .= $advancedoptions;
	$conf .= $nl;

	switch ($expformat) {
		case "zip":
			// create template directory
329
			$tempdir = "/tmp/{$prefix}";
330 331 332 333 334
			@mkdir($tempdir, 0700, true);

			file_put_contents("{$tempdir}/{$prefix}.ovpn", $conf);

			$cafile = "{$tempdir}/{$cafile}";
335
			file_put_contents("{$cafile}", $server_ca);
336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356
			if ($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);
			}
			$command = "cd " . escapeshellarg("{$tempdir}/..")
					. " && /usr/local/bin/zip -r "
357
					. escapeshellarg("/tmp/{$prefix}-config.zip")
358 359 360 361
					. " " . escapeshellarg($prefix);
			exec($command);
			// Remove temporary directory
			exec("rm -rf " . escapeshellarg($tempdir));
362
			return "/tmp/{$prefix}-config.zip";
363 364 365 366 367
			break;
		case "inline":
		case "inlinedroid":
		case "inlineios":
			// Inline CA
368
			$conf .= "<ca>{$nl}" . trim($server_ca) . "{$nl}</ca>{$nl}";
369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387
			if ($settings['mode'] != "server_user") {
				// Inline Cert
				$conf .= "<cert>{$nl}" . trim(base64_decode($cert['crt'])) . "{$nl}</cert>{$nl}";
				// Inline Key
				$conf .= "<key>{$nl}" . trim(base64_decode($cert['prv'])) . "{$nl}</key>{$nl}";
			} else {
				// Work around OpenVPN Connect assuming you have a client cert even when you don't need one
				$conf .= "setenv CLIENT_CERT 0{$nl}";
			}
			// Inline TLS
			if ($settings['tls']) {
				$conf .= "<tls-auth>{$nl}" . trim(base64_decode($settings['tls'])) . "{$nl}</tls-auth>{$nl} key-direction 1{$nl}";
			}
			return $conf;
			break;
		case "yealink_t28":
		case "yealink_t38g":
		case "yealink_t38g2":
			// create template directory
388
			$tempdir = "/tmp/{$prefix}";
389 390 391 392 393 394 395
			$keydir  = "{$tempdir}/keys";
			mkdir($tempdir, 0700, true);
			mkdir($keydir, 0700, true);

			file_put_contents("{$tempdir}/vpn.cnf", $conf);

			$cafile = "{$keydir}/ca.crt";
396
			file_put_contents("{$cafile}", $server_ca);
397 398 399 400 401 402 403 404 405 406 407 408
			if ($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']));
			}
409
			exec("tar -C {$tempdir} -cf /tmp/client.tar ./keys ./vpn.cnf");
410 411
			// Remove temporary directory
			exec("rm -rf {$tempdir}");
412
			return '/tmp/client.tar';
413 414
		case "snom":
			// create template directory
415
			$tempdir = "/tmp/{$prefix}";
416 417 418 419 420
			mkdir($tempdir, 0700, true);

			file_put_contents("{$tempdir}/vpn.cnf", $conf);

			$cafile = "{$tempdir}/ca.crt";
421
			file_put_contents("{$cafile}", $server_ca);
422 423 424 425 426 427 428 429 430 431 432 433
			if ($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']));
			}
434
			exec("cd {$tempdir}/ && tar -cf /tmp/vpnclient.tar *");
435 436
			// Remove temporary directory
			exec("rm -rf {$tempdir}");
437
			return '/tmp/vpnclient.tar';
438 439 440 441 442
		default:
			return $conf;
	}
}

443 444 445
function openvpn_client_export_installer($srvid, $usrid, $crtid, $useaddr, $verifyservercn, $randomlocalport, $usetoken, $outpass, $proxy, $openvpnmanager, $advancedoptions, $openvpn_version = "x86-xp")
{
	global $config, $input_errors, $current_openvpn_version, $current_openvpn_version_rev;
446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464
	$uname_p = trim(exec("uname -p"));

	switch ($openvpn_version) {
		case "x86-xp":
			$client_install_exe = "openvpn-install-{$current_openvpn_version}-I0{$current_openvpn_version_rev}-i686.exe";
			break;
		case "x64-xp":
			$client_install_exe = "openvpn-install-{$current_openvpn_version}-I0{$current_openvpn_version_rev}-x86_64.exe";
			break;
		case "x86-win6":
			$client_install_exe = "openvpn-install-{$current_openvpn_version}-I6{$current_openvpn_version_rev}-i686.exe";
			break;
		case "x64-win6":
			$client_install_exe = "openvpn-install-{$current_openvpn_version}-I6{$current_openvpn_version_rev}-x86_64.exe";
			break;
		default:
			$client_install_exe = "openvpn-install-{$current_openvpn_version}-I0{$current_openvpn_version_rev}-i686.exe";
	}

465
	$ovpndir = "/usr/local/opnsense/contrib/openvpn";
466 467 468
	$workdir = "{$ovpndir}/client-export";

	$validconfig = openvpn_client_export_validate_config($srvid, $usrid, $crtid);
469
	if (!$validconfig) {
470 471 472
		return false;
	}

473 474
	list($settings, $server_cert, $server_ca, $servercn, $user, $cert, $nokeys) = $validconfig;

475
	// create template directory
476
	$tempdir = "/tmp//openvpn-export-".uniqid();
477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501
	mkdir($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}");
	// and put the required installer exe in place
	exec("/bin/cp {$tempdir}/{$client_install_exe} {$tempdir}/openvpn-install.exe");
	if (stristr($openvpn_version, "x64"))
		rename("{$tempdir}/openvpn-postinstall64.exe", "{$tempdir}/openvpn-postinstall.exe");

	// write configuration file
	$prefix = openvpn_client_export_prefix($srvid, $usrid, $crtid);
	$cfgfile = "{$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, $verifyservercn, $randomlocalport, $usetoken,  $nokeys, $proxy, "", "baseconf", false, true, $openvpnmanager, $advancedoptions);
	if (!$conf) {
502
		$input_errors[] = gettext("Could not create a config to export.");
503 504 505 506 507 508
		return false;
	}

	file_put_contents($cfgfile, $conf);

	$cafile = "{$tempdir}/config/{$prefix}-ca.crt";
509
	file_put_contents($cafile, $server_ca);
510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537
	if ($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);
	$files  = "config ";
	if ($openvpnmanager)
		$files .= "openvpnmanager ";

	$files .= "openvpn-install.exe ";
	$files .= "openvpn-postinstall.exe ";
	if ($usetoken)
538
		$procchain =	';!@Install@!UTF-8!
539 540 541 542
RunProgram="openvpn-postinstall.exe /Import"
;!@InstallEnd@!'
;
	else
543
		$procchain =	';!@Install@!UTF-8!
544 545 546 547 548 549 550 551 552 553 554 555
RunProgram="openvpn-postinstall.exe"
;!@InstallEnd@!'
;
	file_put_contents("{$tempdir}/7zipConfig",$procchain);

	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";
556
	chdir('/tmp');
557 558 559 560 561 562 563 564
	exec("/bin/cat {$tempdir}/7zS.sfx {$tempdir}/7zipConfig {$tempdir}/archive.7z > {$outfile}");

	// cleanup
	exec("/bin/rm -r {$tempdir}");

	return $outfile;
}

565 566 567
function viscosity_openvpn_client_config_exporter($srvid, $usrid, $crtid, $useaddr, $verifyservercn, $randomlocalport, $usetoken, $outpass, $proxy, $openvpnmanager, $advancedoptions)
{
	global $config;
568 569
	$uname_p = trim(exec("uname -p"));

570
	$ovpndir = "/usr/local/opnsense/contrib/openvpn/";
571 572

	$uniq = uniqid();
573 574
	$tempdir = "/tmp/openvpn-export-{$uniq}";
	$zipfile = "/tmp/{$uniq}-Viscosity.visc.zip";
575 576

	$validconfig = openvpn_client_export_validate_config($srvid, $usrid, $crtid);
577
	if (!$validconfig) {
578 579 580
		return false;
	}

581 582
	list($settings, $server_cert, $server_ca, $servercn, $user, $cert, $nokeys) = $validconfig;

583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612
	// 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, $usrid, $crtid);
	if (!empty($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, $verifyservercn, $randomlocalport, $usetoken, true, $proxy, "baseconf", $outpass, true, true, $openvpnmanager, $advancedoptions);
	if (!$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[$i], 0, 3) == "ca ") || (substr($conf[$i], 0, 7) == "pkcs12 "))
			unset($conf[$i]);
	}
	$conf = implode("\n", $conf);

	$friendly_name = $settings['description'];
	$visc_settings = <<<EOF
613
#-- Config Auto Generated for Viscosity --#
614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637

#viscosity startonopen false
#viscosity dhcp true
#viscosity dnssupport true
#viscosity name {$friendly_name}

EOF;

	$configfile = "{$tempdir}/config.conf";
	$conf .= "ca ca.crt\n";
	$conf .= "tls-auth ta.key 1\n";
	if ($settings['mode'] != "server_user") {
		$conf .= <<<EOF
cert cert.crt
key key.key
EOF;
	}

	file_put_contents($configfile, $visc_settings . "\n" . $conf);

	//	ca.crt		cert.crt	config.conf	key.key		ta.key

	// write ca
	$cafile = "{$tempdir}/ca.crt";
638
	file_put_contents($cafile, $server_ca);
639 640 641 642 643 644 645 646 647 648 649 650 651 652 653

	if ($settings['mode'] != "server_user") {

		// write user .crt
		$crtfile = "{$tempdir}/cert.crt";
		file_put_contents($crtfile, base64_decode($cert['crt']));

		// write user .key
		if (!empty($outpass)) {
			$keyfile = "{$tempdir}/key.key";
			$clearkeyfile = "{$tempdir}/key-clear.key";
			file_put_contents($clearkeyfile, base64_decode($cert['prv']));
			$eoutpass = escapeshellarg($outpass);
			$ekeyfile = escapeshellarg($keyfile);
			$eclearkeyfile = escapeshellarg($clearkeyfile);
654
			exec("/usr/local/bin/openssl rsa -in ${eclearkeyfile} -out ${ekeyfile} -des3 -passout pass:${eoutpass}");
655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680
			unlink($clearkeyfile);
		} else {
			$keyfile = "{$tempdir}/key.key";
			file_put_contents($keyfile, base64_decode($cert['prv']));
		}
	}

	// TLS support?
	if ($settings['tls']) {
		$tlsfile = "{$tempdir}/ta.key";
		file_put_contents($tlsfile, base64_decode($settings['tls']));
	}

	// Zip Viscosity file
	if(file_exists("/usr/pbi/zip-{$uname_p}/bin/zip"))
		exec("cd {$tempdir}/.. && /usr/pbi/zip-{$uname_p}/bin/zip -r {$zipfile} Viscosity.visc");
	else
		exec("cd {$tempdir}/.. && /usr/local/bin/zip -r {$zipfile} Viscosity.visc");

	// Remove temporary directory
	exec("rm -rf {$tempdir}");

	return $zipfile;

}

681 682 683
function openvpn_client_export_sharedkey_config($srvid, $useaddr, $proxy, $zipconf = false)
{
	global $config, $input_errors;
684 685 686 687

	// lookup server settings
	$settings = $config['openvpn']['openvpn-server'][$srvid];
	if (empty($settings)) {
688
		$input_errors[] = gettext("Could not locate server configuration.");
689 690 691
		return false;
	}
	if ($settings['disable']) {
692
		$input_errors[] = gettext("You cannot export for disabled servers.");
693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755
		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)
				$interface = "wan";
			if (in_array(strtolower($settings['protocol']), array("udp6", "tcp6")))
				$server_host = get_interface_ipv6($interface);
			else
				$server_host = get_interface_ip($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'];

	$proto = strtolower($settings['protocol']);
	if (strtolower(substr($settings['protocol'], 0, 3)) == "tcp")
		$proto .= "-client";

	$cipher = $settings['crypto'];
	$digest = !empty($settings['digest']) ? $settings['digest'] : "SHA1";

	// add basic settings
	$conf  = "dev tun\n";
	if(! empty($settings['tunnel_networkv6'])) {
		$conf .= "tun-ipv6\n";
	}
	$conf .= "persist-tun\n";
	$conf .= "persist-key\n";
	$conf .= "proto {$proto}\n";
	$conf .= "cipher {$cipher}\n";
	$conf .= "auth {$digest}\n";
	$conf .= "pull\n";
	$conf .= "resolv-retry infinite\n";
	$conf .= "remote {$server_host} {$server_port}\n";
	if ($settings['local_network']) {
		list($ip, $mask) = explode('/', $settings['local_network']);
		$mask = gen_subnet_mask($mask);
		$conf .= "route $ip $mask\n";
	}
	if (!empty($settings['tunnel_network'])) {
		list($ip, $mask) = explode('/', $settings['tunnel_network']);
		$mask = gen_subnet_mask($mask);
		$baselong = ip2long32($ip) & ip2long($mask);
		$ip1 = long2ip32($baselong + 1);
		$ip2 = long2ip32($baselong + 2);
		$conf .= "ifconfig $ip2 $ip1\n";
	}
	$conf .= "keepalive 10 60\n";
	$conf .= "ping-timer-rem\n";

	if (!empty($proxy)) {
		if ($proxy['proxy_type'] == "http") {
			if ($proto == "udp") {
756
				$input_errors[] = gettext("This server uses UDP protocol and cannot communicate with HTTP proxy.");
757 758 759 760
				return;
			}
			$conf .= "http-proxy {$proxy['ip']} {$proxy['port']} ";
		}
761
		if ($proxy['proxy_type'] == "socks")
762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783
			$conf .= "socks-proxy {$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 .= "\n";
	}

	// add key settings
	$prefix = openvpn_client_export_prefix($srvid);
	$shkeyfile = "{$prefix}.secret";
	$conf .= "secret {$shkeyfile}\n";

	// add optional settings
	if ($settings['compression'])
		$conf .= "comp-lzo\n";
	if ($settings['passtos'])
		$conf .= "passtos\n";

	if ($zipconf == true) {
		// create template directory
784
		$tempdir = "/tmp/{$prefix}";
785 786 787 788 789 790 791 792
		mkdir($tempdir, 0700, true);

		file_put_contents("{$tempdir}/{$prefix}.ovpn", $conf);

		$shkeyfile = "{$tempdir}/{$shkeyfile}";
		file_put_contents("{$shkeyfile}", base64_decode($settings['shared_key']));

		if(file_exists("/usr/pbi/zip-{$uname_p}/bin/zip"))
793
			exec("cd {$tempdir}/.. && /usr/pbi/zip-{$uname_p}/bin/zip -r /tmp/{$prefix}-config.zip {$prefix}");
794
		else
795
			exec("cd {$tempdir}/.. && /usr/local/bin/zip -r /tmp/{$prefix}-config.zip {$prefix}");
796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843

		// Remove temporary directory
		exec("rm -rf {$tempdir}");
		return "{$prefix}-config.zip";
	} else
		return $conf;
}

function openvpn_client_export_build_remote_lines($settings, $useaddr, $interface, $expformat, $nl) {
	global $config;
	$remotes = array();
	if (($useaddr == "serveraddr") || ($useaddr == "servermagic") || ($useaddr == "servermagichost")) {
		$interface = $settings['interface'];
		if (!empty($settings['ipaddr']) && is_ipaddr($settings['ipaddr'])) {
			$server_host = $settings['ipaddr'];
		} else {
			if (!$interface || ($interface == "any"))
				$interface = "wan";
			if (in_array(strtolower($settings['protocol']), array("udp6", "tcp6")))
				$server_host = get_interface_ipv6($interface);
			else
				$server_host = get_interface_ip($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;

	$proto = strtolower($settings['protocol']);
	if (strtolower(substr($settings['protocol'], 0, 3)) == "tcp")
		$proto .= "-client";

	if (($expformat == "inlineios") && ($proto == "tcp-client"))
		$proto = "tcp";

	if (($useaddr == "servermagic") || ($useaddr == "servermagichost")) {
		$destinations = openvpn_client_export_find_port_forwards($server_host, $settings['local_port'], $proto, true, ($useaddr == "servermagichost"));
		foreach ($destinations as $dest) {
			$remotes[] = "remote {$dest['host']} {$dest['port']} {$dest['proto']}";
		}
	} else {
		$remotes[] = "remote {$server_host} {$settings['local_port']} {$proto}";
	}

	return implode($nl, $remotes);
}

844 845
function openvpn_client_export_find_port_forwards($targetip, $targetport, $targetproto, $skipprivate, $findhostname = false)
{
846
	global $config;
847 848

	$FilterIflist = filter_generate_optcfg_array();
849 850
	$destinations = array();

851
	if (!isset($config['nat']['rule'])) {
852
		return $destinations;
853
	}
854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869

	foreach ($config['nat']['rule'] as $natent) {
		$dest = array();
		if (!isset($natent['disabled'])
			&& ($natent['target'] == $targetip)
			&& ($natent['local-port'] == $targetport)
			&& ($natent['protocol'] == $targetproto)) {
			$dest['proto'] = $natent['protocol'];

			// Could be multiple ports... But we can only use one.
			$dports = is_port($natent['destination']['port']) ? array($natent['destination']['port']) : filter_expand_alias_array($natent['destination']['port']);
			$dest['port'] = $dports[0];

			// Could be network or address ...
			$natif = (!$natent['interface']) ? "wan" : $natent['interface'];

870
			if (!isset($FilterIflist[$natif])) {
871
				continue; // Skip if there is no interface
872
			}
873

874
			$dstaddr = trim(filter_generate_address($FilterIflist, $natent, 'destination', true));
875
			if (!$dstaddr) {
876
				$dstaddr = $FilterIflist[$natif]['ip'];
877
			}
878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906

			$dstaddr_port = explode(" ", $dstaddr);

			if(empty($dstaddr_port[0]) || strtolower(trim($dstaddr_port[0])) == "port")
				continue; // Skip port forward if no destination address found


			if (!is_ipaddr($dstaddr_port[0]))
				continue; // We can only work with single IPs, not subnets!


			if ($skipprivate && is_private_ip($dstaddr_port[0]))
				continue; // Skipping a private IP destination!

			$dest['host'] = $dstaddr_port[0];

			if ($findhostname) {
				$hostname = openvpn_client_export_find_hostname($natif);
				if (!empty($hostname))
					$dest['host'] = $hostname;
			}

			$destinations[] = $dest;
		}
	}

	return $destinations;
}

907 908
function openvpn_client_export_find_hostname($interface)
{
909
	global $config;
910 911 912 913

	$hostname = '';

	if (isset($config['dyndnses']['dyndns'])) {
914 915 916 917 918
		foreach ($config['dyndnses']['dyndns'] as $ddns) {
			if (($ddns['interface'] == $interface) && isset($ddns['enable']) && !empty($ddns['host']) && !is_numeric($ddns['host']) && is_hostname($ddns['host']))
				return $ddns['host'];
		}
	}
919
	if (isset($config['dnsupdates']['dnsupdate'])) {
920 921 922 923 924 925 926
		foreach ($config['dnsupdates']['dnsupdate'] as $ddns) {
			if (($ddns['interface'] == $interface) && isset($ddns['enable']) && !empty($ddns['host']) && !is_numeric($ddns['host']) && is_hostname($ddns['host']))
				return $ddns['host'];
		}
	}

}