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<?php |
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declare(strict_types=1); |
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/** |
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* Derafu: Biblioteca PHP (Núcleo). |
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* Copyright (C) Derafu <https://www.derafu.org> |
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* |
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* Este programa es software libre: usted puede redistribuirlo y/o modificarlo |
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* bajo los términos de la Licencia Pública General Affero de GNU publicada por |
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* la Fundación para el Software Libre, ya sea la versión 3 de la Licencia, o |
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* (a su elección) cualquier versión posterior de la misma. |
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* |
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* Este programa se distribuye con la esperanza de que sea útil, pero SIN |
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* GARANTÍA ALGUNA; ni siquiera la garantía implícita MERCANTIL o de APTITUD |
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* PARA UN PROPÓSITO DETERMINADO. Consulte los detalles de la Licencia Pública |
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* General Affero de GNU para obtener una información más detallada. |
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* |
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* Debería haber recibido una copia de la Licencia Pública General Affero de GNU |
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* junto a este programa. |
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* |
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* En caso contrario, consulte <http://www.gnu.org/licenses/agpl.html>. |
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*/ |
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namespace Derafu\Lib\Core\Package\Prime\Component\Certificate\Entity; |
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use DateTime; |
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use Derafu\Lib\Core\Helper\AsymmetricKey; |
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use Derafu\Lib\Core\Helper\Str; |
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use Derafu\Lib\Core\Package\Prime\Component\Certificate\Contract\CertificateInterface; |
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use Derafu\Lib\Core\Package\Prime\Component\Certificate\Exception\CertificateException; |
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use phpseclib3\File\X509; |
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/** |
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* Clase que representa un certificado digital. |
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*/ |
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class Certificate implements CertificateInterface |
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{ |
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/** |
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* Clave pública (certificado). |
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* |
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* @var string |
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*/ |
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private string $publicKey; |
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/** |
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* Clave privada. |
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* |
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* @var string |
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*/ |
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private string $privateKey; |
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/** |
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* Detalles de la clave privada. |
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* |
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* @var array |
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*/ |
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private array $privateKeyDetails; |
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/** |
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* Datos parseados del certificado X509. |
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* |
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* @var array |
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*/ |
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private array $data; |
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/** |
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* Contructor del certificado digital. |
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* |
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* @param string $publicKey Clave pública (certificado). |
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* @param string $privateKey Clave privada. |
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*/ |
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public function __construct(string $publicKey, string $privateKey) |
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{ |
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$this->publicKey = AsymmetricKey::normalizePublicKey($publicKey); |
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$this->privateKey = AsymmetricKey::normalizePrivateKey($privateKey); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getKeys(bool $clean = false): array |
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{ |
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return [ |
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'cert' => $this->getPublicKey($clean), |
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'pkey' => $this->getPrivateKey($clean), |
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]; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getPublicKey(bool $clean = false): string |
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{ |
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if ($clean) { |
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return trim(str_replace( |
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['-----BEGIN CERTIFICATE-----', '-----END CERTIFICATE-----'], |
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'', |
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$this->publicKey |
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)); |
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} |
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return $this->publicKey; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getCertificate(bool $clean = false): string |
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{ |
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return $this->getPublicKey($clean); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getPrivateKey(bool $clean = false): string |
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{ |
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if ($clean) { |
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return trim(str_replace( |
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['-----BEGIN PRIVATE KEY-----', '-----END PRIVATE KEY-----'], |
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'', |
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$this->privateKey |
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)); |
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} |
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return $this->privateKey; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getPrivateKeyDetails(): array |
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{ |
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if (!isset($this->privateKeyDetails)) { |
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$this->privateKeyDetails = openssl_pkey_get_details( |
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openssl_pkey_get_private($this->privateKey) |
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); |
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} |
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return $this->privateKeyDetails; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getData(): array |
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{ |
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if (!isset($this->data)) { |
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$this->data = openssl_x509_parse($this->publicKey); |
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} |
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return $this->data; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getPkcs12(string $password): string |
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{ |
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// Exportar el certificado final en formato PKCS#12. |
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openssl_pkcs12_export( |
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$this->getPublicKey(), |
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$data, |
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$this->getPrivateKey(), |
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$password |
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); |
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// Entregar los datos del certificado digital. |
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return $data; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getId(bool $forceUpper = true): string |
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{ |
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// Verificar el serialNumber en el subject del certificado. |
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$serialNumber = $this->getData()['subject']['serialNumber'] ?? null; |
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if ($serialNumber !== null) { |
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$serialNumber = ltrim(trim($serialNumber), '0'); |
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return $forceUpper ? strtoupper($serialNumber) : $serialNumber; |
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} |
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// Obtener las extensiones del certificado. |
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$x509 = new X509(); |
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$cert = $x509->loadX509($this->publicKey); |
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if (isset($cert['tbsCertificate']['extensions'])) { |
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foreach ($cert['tbsCertificate']['extensions'] as $extension) { |
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if ( |
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$extension['extnId'] === 'id-ce-subjectAltName' |
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&& isset($extension['extnValue'][0]['otherName']['value']['ia5String']) |
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) { |
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$id = ltrim( |
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trim($extension['extnValue'][0]['otherName']['value']['ia5String']), |
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'0' |
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); |
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return $forceUpper ? strtoupper($id) : $id; |
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} |
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} |
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} |
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// No se encontró el ID, se lanza excepción. |
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throw new CertificateException( |
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'No fue posible obtener el ID (RUN) del certificado digital (firma electrónica). Se recomienda verificar el formato y contraseña del certificado.' |
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); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getName(): string |
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{ |
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$name = $this->getData()['subject']['CN'] ?? null; |
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if ($name === null) { |
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throw new CertificateException( |
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'No fue posible obtener el Name (subject.CN) de la firma.' |
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); |
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} |
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return $name; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getEmail(): string |
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{ |
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$email = $this->getData()['subject']['emailAddress'] ?? null; |
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if ($email === null) { |
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throw new CertificateException( |
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'No fue posible obtener el Email (subject.emailAddress) de la firma.' |
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); |
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} |
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return $email; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getFrom(): string |
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{ |
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return date('Y-m-d\TH:i:s', $this->getData()['validFrom_time_t']); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getTo(): string |
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{ |
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return date('Y-m-d\TH:i:s', $this->getData()['validTo_time_t']); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getTotalDays(): int |
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{ |
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$start = new DateTime($this->getFrom()); |
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$end = new DateTime($this->getTo()); |
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$diff = $start->diff($end); |
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return (int) $diff->format('%a'); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getExpirationDays(?string $from = null): int |
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{ |
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if ($from === null) { |
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$from = date('Y-m-d\TH:i:s'); |
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} |
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$start = new DateTime($from); |
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$end = new DateTime($this->getTo()); |
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$diff = $start->diff($end); |
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return (int) $diff->format('%a'); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isActive(?string $when = null): bool |
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{ |
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if ($when === null) { |
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$when = date('Y-m-d'); |
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} |
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if (!isset($when[10])) { |
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$when .= 'T23:59:59'; |
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} |
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return $when >= $this->getFrom() && $when <= $this->getTo(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getIssuer(): string |
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{ |
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return $this->getData()['issuer']['CN']; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getModulus(int $wordwrap = Str::WORDWRAP): string |
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{ |
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$modulus = $this->getPrivateKeyDetails()['rsa']['n'] ?? null; |
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if ($modulus === null) { |
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throw new CertificateException( |
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'No fue posible obtener el módulo de la clave privada.' |
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); |
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} |
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return Str::wordWrap(base64_encode($modulus), $wordwrap); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getExponent(int $wordwrap = Str::WORDWRAP): string |
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{ |
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$exponent = $this->getPrivateKeyDetails()['rsa']['e'] ?? null; |
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if ($exponent === null) { |
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throw new CertificateException( |
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'No fue posible obtener el exponente de la clave privada.' |
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); |
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} |
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return Str::wordWrap(base64_encode($exponent), $wordwrap); |
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} |
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} |
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