1 files changed, 98 insertions, 0 deletions
diff --git a/lib/private/Security/Certificate.php b/lib/private/Security/Certificate.php
new file mode 100644
index 00000000000..1551694c21f
--- /dev/null
+++ b/lib/private/Security/Certificate.php
@@ -0,0 +1,98 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+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;
+	}
+}