pfSense

<?php

/*

 * system_camanager.php

 *

 * part of pfSense (https://www.pfsense.org)

 * Copyright (c) 2004-2013 BSD Perimeter

 * Copyright (c) 2013-2016 Electric Sheep Fencing

 * Copyright (c) 2014-2023 Rubicon Communications, LLC (Netgate)

 * Copyright (c) 2008 Shrew Soft Inc

 * All rights reserved.

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

##|+PRIV

##|*IDENT=page-system-camanager

##|*NAME=System: CA Manager

##|*DESCR=Allow access to the 'System: CA Manager' page.

##|*MATCH=system_camanager.php*

##|-PRIV

require_once("guiconfig.inc");

require_once("certs.inc");

require_once("pfsense-utils.inc");

$ca_methods = array(

	"internal" => gettext("Create an internal Certificate Authority"),

	"existing" => gettext("Import an existing Certificate Authority"),

	"intermediate" => gettext("Create an intermediate Certificate Authority"));

$ca_keylens = array("1024", "2048", "3072", "4096", "6144", "7680", "8192", "15360", "16384");

$ca_keytypes = array("RSA", "ECDSA");

global $openssl_digest_algs;

global $cert_strict_values;

$max_lifetime = cert_get_max_lifetime();

$default_lifetime = min(3650, $max_lifetime);

$openssl_ecnames = cert_build_curve_list();

$class = "success";

init_config_arr(array('ca'));

$a_ca = &$config['ca'];

init_config_arr(array('cert'));

$a_cert = &$config['cert'];

init_config_arr(array('crl'));

$a_crl = &$config['crl'];

$act = $_REQUEST['act'];

if (isset($_REQUEST['id']) && ctype_alnum($_REQUEST['id'])) {

	$id = $_REQUEST['id'];

}

if (!empty($id)) {

	$thisca =& lookup_ca($id);

}

/* Actions other than 'new' require an ID.

 * 'del' action must be submitted via POST. */

if ((!empty($act) &&

    ($act != 'new') &&

    !$thisca) ||

    (($act == 'del') && empty($_POST))) {

	pfSenseHeader("system_camanager.php");

	exit;

}

switch ($act) {

	case 'del':

		$name = htmlspecialchars($thisca['descr']);

		if (cert_in_use($id)) {

			$savemsg = sprintf(gettext("Certificate %s is in use and cannot be deleted"), $name);

			$class = "danger";

		} else {

			/* Only remove CA reference when deleting. It can be reconnected if a new matching CA is imported */

			foreach ($a_cert as $cid => $acrt) {

				if ($acrt['caref'] == $thisca['refid']) {

					unset($a_cert[$cid]['caref']);

				}

			}

			/* Remove any CRLs for this CA, there is no way to recover the connection once the CA has been removed. */

			foreach ($a_crl as $cid => $acrl) {

				if ($acrl['caref'] == $thisca['refid']) {

					unset($a_crl[$cid]);

				}

			}

			/* Delete the CA */

			foreach ($a_ca as $cid => $aca) {

				if ($aca['refid'] == $thisca['refid']) {

					unset($a_ca[$cid]);

				}

			}

			$savemsg = sprintf(gettext("Deleted Certificate Authority %s and associated CRLs"), htmlspecialchars($name));

			write_config($savemsg);

			ca_setup_trust_store();

		}

		unset($act);

		break;

	case 'edit':

		/* Editing an existing CA, so populate values. */

		$pconfig['method'] = 'existing';

		$pconfig['descr']  = $thisca['descr'];

		$pconfig['refid']  = $thisca['refid'];

		$pconfig['cert']   = base64_decode($thisca['crt']);

		$pconfig['serial'] = $thisca['serial'];

		$pconfig['trust']  = ($thisca['trust'] == 'enabled');

		$pconfig['randomserial']  = ($thisca['randomserial'] == 'enabled');

		if (!empty($thisca['prv'])) {

			$pconfig['key'] = base64_decode($thisca['prv']);

		}

		break;

	case 'new':

		/* New CA, so set default values */

		$pconfig['method'] = $_POST['method'];

		$pconfig['keytype'] = "RSA";

		$pconfig['keylen'] = "2048";

		$pconfig['ecname'] = "prime256v1";

		$pconfig['digest_alg'] = "sha256";

		$pconfig['lifetime'] = $default_lifetime;

		$pconfig['dn_commonname'] = "internal-ca";

		break;

	case 'exp':

		/* Exporting a ca */

		send_user_download('data', base64_decode($thisca['crt']), "{$thisca['descr']}.crt");

		break;

	case 'expkey':

		/* Exporting a private key */

		send_user_download('data', base64_decode($thisca['prv']), "{$thisca['descr']}.key");

		break;

	default:

		break;

}

if ($_POST['save']) {

	unset($input_errors);

	$input_errors = array();

	$pconfig = $_POST;

	/* input validation */

	switch ($pconfig['method']) {

		case 'existing':

			$reqdfields = explode(" ", "descr cert");

			$reqdfieldsn = array(

				gettext("Descriptive name"),

				gettext("Certificate data"));

			/* Make sure we do not have invalid characters in the fields for the certificate */

			if (preg_match("/[\?\>\<\&\/\\\"\']/", $_POST['descr'])) {

				array_push($input_errors, gettext("The field 'Descriptive Name' contains invalid characters."));

			}

			if ($_POST['cert'] && (!strstr($_POST['cert'], "BEGIN CERTIFICATE") || !strstr($_POST['cert'], "END CERTIFICATE"))) {

				$input_errors[] = gettext("This certificate does not appear to be valid.");

			}

			if ($_POST['key'] && strstr($_POST['key'], "ENCRYPTED")) {

				$input_errors[] = gettext("Encrypted private keys are not yet supported.");

			}

			if (!$input_errors && !empty($_POST['key']) && cert_get_publickey($_POST['cert'], false) != cert_get_publickey($_POST['key'], false, 'prv')) {

				$input_errors[] = gettext("The submitted private key does not match the submitted certificate data.");

			}

			/* we must ensure the certificate is capable of acting as a CA

			 * https://redmine.pfsense.org/issues/7885

			 */

			if (!$input_errors) {

				$purpose = cert_get_purpose($_POST['cert'], false);

				if ($purpose['ca'] != 'Yes') {

					$input_errors[] = gettext("The submitted certificate does not appear to be a Certificate Authority, import it on the Certificates tab instead.");

				}

			}

			break;

		case 'internal':

			$reqdfields = explode(" ",

				"descr keylen ecname keytype lifetime dn_commonname");

			$reqdfieldsn = array(

				gettext("Descriptive name"),

				gettext("Key length"),

				gettext("Elliptic Curve Name"),

				gettext("Key type"),

				gettext("Lifetime"),

				gettext("Common Name"));

			break;

		case 'intermediate':

			$reqdfields = explode(" ",

				"descr caref keylen ecname keytype lifetime dn_commonname");

			$reqdfieldsn = array(

				gettext("Descriptive name"),

				gettext("Signing Certificate Authority"),

				gettext("Key length"),

				gettext("Elliptic Curve Name"),

				gettext("Key type"),

				gettext("Lifetime"),

				gettext("Common Name"));

			break;

		default:

			break;

	}

	do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);

	if ($pconfig['method'] != "existing") {

		/* Make sure we do not have invalid characters in the fields for the certificate */

		if (preg_match("/[\?\>\<\&\/\\\"\']/", $_POST['descr'])) {

			array_push($input_errors, gettext("The field 'Descriptive Name' contains invalid characters."));

		}

		$pattern = '/[^a-zA-Z0-9\ \'\/~`\!@#\$%\^&\*\(\)_\-\+=\{\}\[\]\|;:"\<\>,\.\?\\\]/';

		if (!empty($_POST['dn_commonname']) && preg_match($pattern, $_POST['dn_commonname'])) {

			$input_errors[] = gettext("The field 'Common Name' contains invalid characters.");

		}

		if (!empty($_POST['dn_state']) && preg_match($pattern, $_POST['dn_state'])) {

			$input_errors[] = gettext("The field 'State or Province' contains invalid characters.");

		}

		if (!empty($_POST['dn_city']) && preg_match($pattern, $_POST['dn_city'])) {

			$input_errors[] = gettext("The field 'City' contains invalid characters.");

		}

		if (!empty($_POST['dn_organization']) && preg_match($pattern, $_POST['dn_organization'])) {

			$input_errors[] = gettext("The field 'Organization' contains invalid characters.");

		}

		if (!empty($_POST['dn_organizationalunit']) && preg_match($pattern, $_POST['dn_organizationalunit'])) {

			$input_errors[] = gettext("The field 'Organizational Unit' contains invalid characters.");

		}

		if (!in_array($_POST["keytype"], $ca_keytypes)) {

			array_push($input_errors, gettext("Please select a valid Key Type."));

		}

		if (!in_array($_POST["keylen"], $ca_keylens)) {

			array_push($input_errors, gettext("Please select a valid Key Length."));

		}

		if (!in_array($_POST["ecname"], array_keys($openssl_ecnames))) {

			array_push($input_errors, gettext("Please select a valid Elliptic Curve Name."));

		}

		if (!in_array($_POST["digest_alg"], $openssl_digest_algs)) {

			array_push($input_errors, gettext("Please select a valid Digest Algorithm."));

		}

		if ($_POST['lifetime'] > $max_lifetime) {

			$input_errors[] = gettext("Lifetime is longer than the maximum allowed value. Use a shorter lifetime.");

		}

	}

	if (!empty($_POST['serial']) && !cert_validate_serial($_POST['serial'])) {

		$input_errors[] = gettext("Please enter a valid integer serial number.");

	}

	/* save modifications */

	if (!$input_errors) {

		$ca = array();

		if (!isset($pconfig['refid']) || empty($pconfig['refid'])) {

			$ca['refid'] = uniqid();

		} else {

			$ca['refid'] = $pconfig['refid'];

		}

		if (isset($id) && $thisca) {

			$ca = $thisca;

		}

		$ca['descr'] = $pconfig['descr'];

		$ca['trust'] = ($pconfig['trust'] == 'yes') ? "enabled" : "disabled";

		$ca['randomserial'] = ($pconfig['randomserial'] == 'yes') ? "enabled" : "disabled";

		if ($act == "edit") {

			$ca['descr']  = $pconfig['descr'];

			$ca['refid']  = $pconfig['refid'];

			$ca['serial'] = $pconfig['serial'];

			$ca['crt'] = base64_encode($pconfig['cert']);

			$ca['prv'] = base64_encode($pconfig['key']);

			$savemsg = sprintf(gettext("Updated Certificate Authority %s"), $ca['descr']);

		} else {

			$old_err_level = error_reporting(0); /* otherwise openssl_ functions throw warnings directly to a page screwing menu tab */

			if ($pconfig['method'] == "existing") {

				ca_import($ca, $pconfig['cert'], $pconfig['key'], $pconfig['serial']);

				$savemsg = sprintf(gettext("Imported Certificate Authority %s"), $ca['descr']);

			} else if ($pconfig['method'] == "internal") {

				$dn = array('commonName' => $pconfig['dn_commonname']);

				if (!empty($pconfig['dn_country'])) {

					$dn['countryName'] = $pconfig['dn_country'];

				}

				if (!empty($pconfig['dn_state'])) {

					$dn['stateOrProvinceName'] = $pconfig['dn_state'];

				}

				if (!empty($pconfig['dn_city'])) {

					$dn['localityName'] = $pconfig['dn_city'];

				}

				if (!empty($pconfig['dn_organization'])) {

					$dn['organizationName'] = $pconfig['dn_organization'];

				}

				if (!empty($pconfig['dn_organizationalunit'])) {

					$dn['organizationalUnitName'] = $pconfig['dn_organizationalunit'];

				}

				if (!ca_create($ca, $pconfig['keylen'], $pconfig['lifetime'], $dn, $pconfig['digest_alg'], $pconfig['keytype'], $pconfig['ecname'])) {

					$input_errors = array();

					while ($ssl_err = openssl_error_string()) {

						if (strpos($ssl_err, 'NCONF_get_string:no value') === false) {

							array_push($input_errors, "openssl library returns: " . $ssl_err);

						}

					}

				}

				$savemsg = sprintf(gettext("Created internal Certificate Authority %s"), $ca['descr']);

			} else if ($pconfig['method'] == "intermediate") {

				$dn = array('commonName' => $pconfig['dn_commonname']);

				if (!empty($pconfig['dn_country'])) {

					$dn['countryName'] = $pconfig['dn_country'];

				}

				if (!empty($pconfig['dn_state'])) {

					$dn['stateOrProvinceName'] = $pconfig['dn_state'];

				}

				if (!empty($pconfig['dn_city'])) {

					$dn['localityName'] = $pconfig['dn_city'];

				}

				if (!empty($pconfig['dn_organization'])) {

					$dn['organizationName'] = $pconfig['dn_organization'];

				}

				if (!empty($pconfig['dn_organizationalunit'])) {

					$dn['organizationalUnitName'] = $pconfig['dn_organizationalunit'];

				}

				if (!ca_inter_create($ca, $pconfig['keylen'], $pconfig['lifetime'], $dn, $pconfig['caref'], $pconfig['digest_alg'], $pconfig['keytype'], $pconfig['ecname'])) {

					$input_errors = array();

					while ($ssl_err = openssl_error_string()) {

						if (strpos($ssl_err, 'NCONF_get_string:no value') === false) {

							array_push($input_errors, "openssl library returns: " . $ssl_err);

						}

					}

				}

				$savemsg = sprintf(gettext("Created internal intermediate Certificate Authority %s"), $ca['descr']);

			}

			error_reporting($old_err_level);

		}

		if (isset($id) && $thisca) {

			$thisca = $ca;

		} else {

			$a_ca[] = $ca;

		}

		if (!$input_errors) {

			write_config($savemsg);

			ca_setup_trust_store();

			pfSenseHeader("system_camanager.php");

		}

	}

}

$pgtitle = array(gettext('System'), gettext('Certificate'), gettext('Authorities'));

$pglinks = array("", "system_camanager.php", "system_camanager.php");

if ($act == "new" || $act == "edit" || $act == gettext("Save") || $input_errors) {

	$pgtitle[] = gettext('Edit');

	$pglinks[] = "@self";

}

include("head.inc");

if ($input_errors) {

	print_input_errors($input_errors);

}

if ($savemsg) {

	print_info_box($savemsg, $class);

}

$tab_array = array();

$tab_array[] = array(gettext('Authorities'), true, 'system_camanager.php');

$tab_array[] = array(gettext('Certificates'), false, 'system_certmanager.php');

$tab_array[] = array(gettext('Revocation'), false, 'system_crlmanager.php');

display_top_tabs($tab_array);

if (!($act == "new" || $act == "edit" || $act == gettext("Save") || $input_errors)) {

?>

<div class="panel panel-default" id="search-panel">

	<div class="panel-heading">

		<h2 class="panel-title">

			<?=gettext('Search')?>

			<span class="widget-heading-icon pull-right">

				<a data-toggle="collapse" href="#search-panel_panel-body">

					<i class="fa-solid fa-plus-circle"></i>

				</a>

			</span>

		</h2>

	</div>

	<div id="search-panel_panel-body" class="panel-body collapse in">

		<div class="form-group">

			<label class="col-sm-2 control-label">

				<?=gettext("Search term")?>

			</label>

			<div class="col-sm-5"><input class="form-control" name="searchstr" id="searchstr" type="text"/></div>

			<div class="col-sm-2">

				<select id="where" class="form-control">

					<option value="0"><?=gettext("Name")?></option>

					<option value="1"><?=gettext("Distinguished Name")?></option>

					<option value="2" selected><?=gettext("Both")?></option>

				</select>

			</div>

			<div class="col-sm-3">

				<a id="btnsearch" title="<?=gettext("Search")?>" class="btn btn-primary btn-sm"><i class="fa-solid fa-search icon-embed-btn"></i><?=gettext("Search")?></a>

				<a id="btnclear" title="<?=gettext("Clear")?>" class="btn btn-info btn-sm"><i class="fa-solid fa-undo icon-embed-btn"></i><?=gettext("Clear")?></a>

			</div>

			<div class="col-sm-10 col-sm-offset-2">

				<span class="help-block"><?=gettext('Enter a search string or *nix regular expression to search certificate names and distinguished names.')?></span>

			</div>

		</div>

	</div>

</div>

<div class="panel panel-default">

	<div class="panel-heading"><h2 class="panel-title"><?=gettext('Certificate Authorities')?></h2></div>

	<div class="panel-body">

		<div class="table-responsive">

		<table id="catable" class="table table-striped table-hover table-rowdblclickedit sortable-theme-bootstrap" data-sortable>

			<thead>

				<tr>

					<th><?=gettext("Name")?></th>

					<th><?=gettext("Internal")?></th>

					<th><?=gettext("Issuer")?></th>

					<th><?=gettext("Certificates")?></th>

					<th><?=gettext("Distinguished Name")?></th>

					<th><?=gettext("In Use")?></th>

					<th><?=gettext("Actions")?></th>

				</tr>

			</thead>

			<tbody>

<?php

$pluginparams = array();

$pluginparams['type'] = 'certificates';

$pluginparams['event'] = 'used_ca';

$certificates_used_by_packages = pkg_call_plugins('plugin_certificates', $pluginparams);

foreach ($a_ca as $ca):

	$name = htmlspecialchars($ca['descr']);

	$subj = cert_get_subject($ca['crt']);

	$issuer = cert_get_issuer($ca['crt']);

	if ($subj == $issuer) {

		$issuer_name = gettext("self-signed");

	} else {

		$issuer_name = gettext("external");

	}

	$subj = htmlspecialchars(cert_escape_x509_chars($subj, true));

	$issuer = htmlspecialchars($issuer);

	$certcount = 0;

	$issuer_ca = lookup_ca($ca['caref']);

	if ($issuer_ca) {

		$issuer_name = htmlspecialchars($issuer_ca['descr']);

	}

	foreach ($a_cert as $cert) {

		if ($cert['caref'] == $ca['refid']) {

			$certcount++;

		}

	}

	foreach ($a_ca as $cert) {

		if ($cert['caref'] == $ca['refid']) {

			$certcount++;

		}

	}

?>

				<tr>

					<td><?=$name?></td>

					<td><i class="<?= (!empty($ca['prv'])) ? "fa-solid fa-check" : "fa-solid fa-times" ; ?>"></i></td>

					<td><i><?=$issuer_name?></i></td>

					<td><?=$certcount?></td>

					<td>

						<?=$subj?>

						<?php cert_print_infoblock($ca); ?>

						<?php cert_print_dates($ca);?>

					</td>

					<td class="text-nowrap">

						<?php if (is_openvpn_server_ca($ca['refid'])): ?>

							<?=gettext("OpenVPN Server")?><br/>

						<?php endif?>

						<?php if (is_openvpn_client_ca($ca['refid'])): ?>

							<?=gettext("OpenVPN Client")?><br/>

						<?php endif?>

						<?php if (is_ipsec_peer_ca($ca['refid'])): ?>

							<?=gettext("IPsec Tunnel")?><br/>

						<?php endif?>

						<?php if (is_ldap_peer_ca($ca['refid'])): ?>

							<?=gettext("LDAP Server")?>

						<?php endif?>

						<?php echo cert_usedby_description($ca['refid'], $certificates_used_by_packages); ?>

					</td>

					<td class="text-nowrap">

						<a class="fa-solid fa-pencil"	title="<?=gettext("Edit CA")?>"	href="system_camanager.php?act=edit&amp;id=<?=$ca['refid']?>"></a>

						<a class="fa-solid fa-certificate"	title="<?=gettext("Export CA")?>"	href="system_camanager.php?act=exp&amp;id=<?=$ca['refid']?>"></a>

					<?php if ($ca['prv']): ?>

						<a class="fa-solid fa-key"	title="<?=gettext("Export key")?>"	href="system_camanager.php?act=expkey&amp;id=<?=$ca['refid']?>"></a>

					<?php endif?>

					<?php if (is_cert_locally_renewable($ca)): ?>

						<a href="system_certmanager_renew.php?type=ca&amp;refid=<?=$ca['refid']?>" class="fa-solid fa-arrow-rotate-right" title="<?=gettext("Reissue/Renew")?>"></a>

					<?php endif ?>

					<?php if (!ca_in_use($ca['refid'])): ?>

						<a class="fa-solid fa-trash-can" 	title="<?=gettext("Delete CA and its CRLs")?>"	href="system_camanager.php?act=del&amp;id=<?=$ca['refid']?>" usepost ></a>

					<?php endif?>

					</td>

				</tr>

<?php endforeach; ?>

			</tbody>

		</table>

		</div>

	</div>

</div>

<nav class="action-buttons">

	<a href="?act=new" class="btn btn-success btn-sm">

		<i class="fa-solid fa-plus icon-embed-btn"></i>

		<?=gettext("Add")?>

	</a>

</nav>

<script type="text/javascript">

//<![CDATA[

events.push(function() {

	// Make these controls plain buttons

	$("#btnsearch").prop('type', 'button');

	$("#btnclear").prop('type', 'button');

	// Search for a term in the entry name and/or dn

	$("#btnsearch").click(function() {

		var searchstr = $('#searchstr').val().toLowerCase();

		var table = $("table tbody");

		var where = $('#where').val();

		table.find('tr').each(function (i) {

			var $tds = $(this).find('td'),

				shortname = $tds.eq(0).text().trim().toLowerCase(),

				dn = $tds.eq(4).text().trim().toLowerCase();

			regexp = new RegExp(searchstr);

			if (searchstr.length > 0) {

				if (!(regexp.test(shortname) && (where != 1)) && !(regexp.test(dn) && (where != 0))) {

					$(this).hide();

				} else {

					$(this).show();

				}

			} else {

				$(this).show();	// A blank search string shows all

			}

		});

	});

	// Clear the search term and unhide all rows (that were hidden during a previous search)

	$("#btnclear").click(function() {

		var table = $("table tbody");

		$('#searchstr').val("");

		table.find('tr').each(function (i) {

			$(this).show();

		});

	});

	// Hitting the enter key will do the same as clicking the search button

	$("#searchstr").on("keyup", function (event) {

		if (event.keyCode == 13) {

			$("#btnsearch").get(0).click();

		}

	});

});

//]]>

</script>

<?php

	include("foot.inc");

	exit;

}

$form = new Form;

//$form->setAction('system_camanager.php?act=edit');

if (isset($id) && $thisca) {

	$form->addGlobal(new Form_Input(

		'id',

		null,

		'hidden',

		$id

	));

}

if ($act == "edit") {

	$form->addGlobal(new Form_Input(

		'refid',

		null,

		'hidden',

		$pconfig['refid']

	));

}

$section = new Form_Section('Create / Edit CA');

$section->addInput(new Form_Input(

	'descr',

	'*Descriptive name',

	'text',

	$pconfig['descr']

))->setHelp('The name of this entry as displayed in the GUI for reference.%s' .

		'This name can contain spaces but it cannot contain any of the ' .

		'following characters: %s', '<br/>', "?, >, <, &, /, \, \", '");

if (!isset($id) || $act == "edit") {

	$section->addInput(new Form_Select(

		'method',

		'*Method',

		$pconfig['method'],

		$ca_methods

	))->toggles();

}

$section->addInput(new Form_Checkbox(

	'trust',

	'Trust Store',

	'Add this Certificate Authority to the Operating System Trust Store',

	$pconfig['trust']

))->setHelp('When enabled, the contents of the CA will be added to the trust ' .

	'store so that they will be trusted by the operating system.');

$section->addInput(new Form_Checkbox(

	'randomserial',

	'Randomize Serial',

	'Use random serial numbers when signing certificates',

	$pconfig['randomserial']

))->setHelp('When enabled, if this CA is capable of signing certificates then ' .

		'serial numbers for certificates signed by this CA will be ' .

		'automatically randomized and checked for uniqueness instead of ' .

		'using the sequential value from Next Certificate Serial.');

$form->add($section);

$section = new Form_Section('Existing Certificate Authority');

$section->addClass('toggle-existing collapse');

$section->addInput(new Form_Textarea(

	'cert',

	'*Certificate data',

	$pconfig['cert']

))->setHelp('Paste a certificate in X.509 PEM format here.');

$section->addInput(new Form_Textarea(

	'key',

	'Certificate Private Key (optional)',

	$pconfig['key']

))->setHelp('Paste the private key for the above certificate here. This is '.

	'optional in most cases, but is required when generating a '.

	'Certificate Revocation List (CRL).');

$section->addInput(new Form_Input(

	'serial',

	'Next Certificate Serial',

	'number',

	$pconfig['serial']

))->setHelp('Enter a decimal number to be used as a sequential serial number for ' .

	'the next certificate to be signed by this CA. This value is ignored ' .

	'when Randomize Serial is checked.');

$form->add($section);

$section = new Form_Section('Internal Certificate Authority');

$section->addClass('toggle-internal', 'toggle-intermediate', 'collapse');

$allCas = array();

foreach ($a_ca as $ca) {

	if (!$ca['prv']) {

			continue;

	}

	$allCas[ $ca['refid'] ] = $ca['descr'];

}

$group = new Form_Group('*Signing Certificate Authority');

$group->addClass('toggle-intermediate', 'collapse');

$group->add(new Form_Select(

	'caref',

	null,

	$pconfig['caref'],

	$allCas

));

$section->add($group);

$section->addInput(new Form_Select(

	'keytype',

	'*Key type',

	$pconfig['keytype'],

	array_combine($ca_keytypes, $ca_keytypes)

));

$group = new Form_Group($i == 0 ? '*Key length':'');

$group->addClass('rsakeys');

$group->add(new Form_Select(

	'keylen',

	null,

	$pconfig['keylen'],

	array_combine($ca_keylens, $ca_keylens)

))->setHelp('The length to use when generating a new RSA key, in bits. %1$s' .

	'The Key Length should not be lower than 2048 or some platforms ' .

	'may consider the certificate invalid.', '<br/>');

$section->add($group);

$group = new Form_Group($i == 0 ? '*Elliptic Curve Name':'');

$group->addClass('ecnames');

$group->add(new Form_Select(

	'ecname',

	null,

	$pconfig['ecname'],

	$openssl_ecnames

))->setHelp('Curves may not be compatible with all uses. Known compatible curve uses are denoted in brackets.');

$section->add($group);

$section->addInput(new Form_Select(

	'digest_alg',

	'*Digest Algorithm',

	$pconfig['digest_alg'],

	array_combine($openssl_digest_algs, $openssl_digest_algs)

))->setHelp('The digest method used when the CA is signed. %1$s' .

	'The best practice is to use SHA256 or higher. '.

	'Some services and platforms, such as the GUI web server and OpenVPN, consider weaker digest algorithms invalid.', '<br/>');

$section->addInput(new Form_Input(

	'lifetime',

	'*Lifetime (days)',

	'number',

	$pconfig['lifetime'],

	['max' => $max_lifetime]

));

$section->addInput(new Form_Input(

	'dn_commonname',

	'*Common Name',

	'text',

	$pconfig['dn_commonname'],

	['placeholder' => 'e.g. internal-ca']

));

$section->addInput(new Form_StaticText(

	null,

	gettext('The following certificate authority subject components are optional and may be left blank.')

));

$section->addInput(new Form_Select(

	'dn_country',

	'Country Code',

	$pconfig['dn_country'],

	get_cert_country_codes()

));

$section->addInput(new Form_Input(

	'dn_state',

	'State or Province',

	'text',

	$pconfig['dn_state'],

	['placeholder' => 'e.g. Texas']

));

$section->addInput(new Form_Input(

	'dn_city',

	'City',

	'text',

	$pconfig['dn_city'],

	['placeholder' => 'e.g. Austin']

));

$section->addInput(new Form_Input(

	'dn_organization',

	'Organization',

	'text',

	$pconfig['dn_organization'],

	['placeholder' => 'e.g. My Company Inc']

));

$section->addInput(new Form_Input(

	'dn_organizationalunit',

	'Organizational Unit',

	'text',

	$pconfig['dn_organizationalunit'],

	['placeholder' => 'e.g. My Department Name (optional)']

));

$form->add($section);

print $form;