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nextcloud_server/lib/private/Security/Certificate.php
Richard Steinmetz e2373b56fe
fix: gracefully parse non-standard trusted certificates
Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>
2024-09-30 09:21:59 +02:00

117 lines
3.2 KiB
PHP

<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author J0WI <J0WI@users.noreply.github.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Robin Appelman <robin@icewind.nl>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Security;
use OCP\ICertificate;
class Certificate implements ICertificate {
protected string $name;
protected ?string $commonName;
protected ?string $organization;
protected \DateTime $issueDate;
protected \DateTime $expireDate;
protected ?string $issuerName;
protected ?string $issuerOrganization;
/**
* @param string $data base64 encoded certificate
* @throws \Exception If the certificate could not get parsed
*/
public function __construct(string $data, string $name) {
$this->name = $name;
$gmt = new \DateTimeZone('GMT');
// If string starts with "file://" ignore the certificate
$query = 'file://';
if (strtolower(substr($data, 0, strlen($query))) === $query) {
throw new \Exception('Certificate could not get parsed.');
}
$info = openssl_x509_parse($data);
if (!is_array($info)) {
// There is a non-standardized certificate format only used by OpenSSL. Replace all
// separators and try again.
$data = str_replace(
['-----BEGIN TRUSTED CERTIFICATE-----', '-----END TRUSTED CERTIFICATE-----'],
['-----BEGIN CERTIFICATE-----', '-----END CERTIFICATE-----'],
$data,
);
$info = openssl_x509_parse($data);
}
if (!is_array($info)) {
throw new \Exception('Certificate could not get parsed.');
}
$this->commonName = $info['subject']['CN'] ?? null;
$this->organization = $info['subject']['O'] ?? null;
$this->issueDate = new \DateTime('@' . $info['validFrom_time_t'], $gmt);
$this->expireDate = new \DateTime('@' . $info['validTo_time_t'], $gmt);
$this->issuerName = $info['issuer']['CN'] ?? null;
$this->issuerOrganization = $info['issuer']['O'] ?? null;
}
public function getName(): string {
return $this->name;
}
public function getCommonName(): ?string {
return $this->commonName;
}
public function getOrganization(): ?string {
return $this->organization;
}
public function getIssueDate(): \DateTime {
return $this->issueDate;
}
public function getExpireDate(): \DateTime {
return $this->expireDate;
}
public function isExpired(): bool {
$now = new \DateTime();
return $this->issueDate > $now or $now > $this->expireDate;
}
public function getIssuerName(): ?string {
return $this->issuerName;
}
public function getIssuerOrganization(): ?string {
return $this->issuerOrganization;
}
}