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<?php |
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declare(strict_types=1); |
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namespace LauLamanApps\ApplePassbook\Build; |
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use LauLamanApps\ApplePassbook\Build\Exception\CertificateException; |
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class Signer |
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{ |
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public const FILENAME = 'signature'; |
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/** |
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* @var mixed |
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* in PHP 7.4 this is a resource, in PHP 8.0 this is a OpenSSLCertificate |
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*/ |
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private $certificate; |
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/** |
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* @var mixed |
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* in PHP 7.4 this is a resource, in PHP 8.0 this is a OpenSSLAsymmetricKey |
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*/ |
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private $privateKey; |
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private string $appleWWDRCA; |
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/** |
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* @throws CertificateException |
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*/ |
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public function __construct(?string $certificatePath = null, ?string $password = null) |
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{ |
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if ($certificatePath !== null && $password !== null) { |
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$this->setCertificate($certificatePath, $password); |
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} |
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$this->setAppleWWDRCA(__DIR__ . '/../../certificates/AppleWWDRCA.pem'); |
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} |
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/** |
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* @throws CertificateException |
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*/ |
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public function setCertificate(string $path, string $password): void |
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{ |
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if (!file_exists($path)) { |
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throw CertificateException::fileDoesNotExist($path); |
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} |
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$data = []; |
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if (!openssl_pkcs12_read((string) file_get_contents($path), $data, $password)) { |
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throw CertificateException::failedToReadPkcs12($path); |
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} |
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$this->certificate = openssl_x509_read($data['cert']); |
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$this->privateKey = openssl_pkey_get_private($data['pkey'], $password); |
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} |
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/** |
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* @throws CertificateException |
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*/ |
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public function setAppleWWDRCA(string $path): void |
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{ |
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if (!file_exists($path)) { |
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throw CertificateException::fileDoesNotExist($path); |
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} |
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$this->appleWWDRCA = $path; |
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} |
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public function sign(string $temporaryDirectory): void |
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{ |
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$manifestFile = $temporaryDirectory . ManifestGenerator::FILENAME; |
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$openSslArguments = [ |
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$manifestFile, |
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$temporaryDirectory . self::FILENAME, |
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$this->certificate, |
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$this->privateKey, |
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[], |
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PKCS7_BINARY | PKCS7_DETACHED |
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]; |
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if ($this->appleWWDRCA) { |
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$openSslArguments[] = $this->appleWWDRCA; |
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} |
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call_user_func_array('openssl_pkcs7_sign', $openSslArguments); |
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$signature = (string) file_get_contents($temporaryDirectory . self::FILENAME); |
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$signature = $this->convertPEMtoDER($signature); |
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file_put_contents($temporaryDirectory . self::FILENAME, $signature); |
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} |
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private function convertPEMtoDER(string $signature): string |
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{ |
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$begin = 'filename="smime.p7s"'; |
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$end = '------'; |
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$signature = substr($signature, strpos($signature, $begin) + strlen($begin)); |
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$signature = substr($signature, 0, (int) strpos($signature, $end)); |
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$signature = trim($signature); |
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$signature = base64_decode($signature); |
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return $signature; |
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} |
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} |
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LauLamanApps /
apple-passbook
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