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| 1 | <?php |
| 2 | |
| 3 | namespace Proton\IosReceiptParser; |
| 4 | |
| 5 | use Proton\IosReceiptParser\ASN1\Pkcs7Reader; |
| 6 | use Proton\IosReceiptParser\ASN1\Pkcs7UnverifiedParser; |
| 7 | use Proton\IosReceiptParser\ASN1\SimpleDecoder; |
| 8 | use DateTime; |
| 9 | |
| 10 | final class Parser |
| 11 | { |
| 12 | /** @var Pkcs7Reader */ |
| 13 | private $pkcs7Reader; |
| 14 | |
| 15 | /** @var SimpleDecoder */ |
| 16 | private $decoder; |
| 17 | |
| 18 | public function __construct(Pkcs7Reader $pkcs7Reader = null) |
| 19 | { |
| 20 | $this->pkcs7Reader = $pkcs7Reader ?? new Pkcs7UnverifiedParser(); |
| 21 | $this->decoder = new SimpleDecoder(); |
| 22 | } |
| 23 | |
| 24 | public function parseUnverified(string $receipt): Receipt |
| 25 | { |
| 26 | $payload = $this->pkcs7Reader->readUnverified(base64_decode($receipt)); |
| 27 | |
| 28 | return $this->parsePayload($payload); |
| 29 | } |
| 30 | |
| 31 | /** |
| 32 | * @throws \Exception |
| 33 | */ |
| 34 | public function parseUsingOnlyTrustedCerts(string $receipt, string ...$certificate): Receipt |
| 35 | { |
| 36 | $payload = $this->pkcs7Reader->readUsingOnlyTrustedCerts(base64_decode($receipt), ...$certificate); |
| 37 | |
| 38 | return $this->parsePayload($payload); |
| 39 | } |
| 40 | |
| 41 | private function parsePayload(string $payload): Receipt |
| 42 | { |
| 43 | return new Receipt($this->decoder->decodeAttributesSet($payload), $this->decoder); |
| 44 | } |
| 45 | |
| 46 | public static function convertTimestampMs(?string $time): ?string |
| 47 | { |
| 48 | if ($time === null) { |
| 49 | return null; |
| 50 | } |
| 51 | $datetime = DateTime::createFromFormat(DateTime::ATOM, $time); |
| 52 | return (string) $datetime->getTimestamp() . $datetime->format('v'); |
| 53 | } |
| 54 | } |