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<?php |
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declare(strict_types=1); |
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namespace WyriHaximus\React\ChildProcess\Messenger\Messages; |
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use Exception; |
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use function base64_encode; |
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use function hash_equals; |
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use function hash_hmac; |
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use function Safe\base64_decode; |
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use function Safe\json_encode; |
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final class SecureLine implements LineInterface |
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{ |
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protected ActionableMessageInterface $line; |
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protected string $key; |
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/** |
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* @param array<mixed> $options |
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*/ |
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public function __construct(ActionableMessageInterface $line, array $options) |
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{ |
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$this->line = $line; |
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$this->key = $options['key']; |
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} |
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public function __toString(): string |
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{ |
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$line = json_encode($this->line); |
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return json_encode([ |
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'type' => 'secure', |
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'line' => $line, |
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'signature' => base64_encode(static::sign($line, $this->key)), |
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]) . LineInterface::EOL; |
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} |
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/** |
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* @param array<mixed> $line |
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* @param array<mixed> $lineOptions |
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* |
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* @throws Exception |
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*/ |
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public static function fromLine(array $line, array $lineOptions): ActionableMessageInterface |
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{ |
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if (static::validate(base64_decode($line['signature'], true), $line['line'], $lineOptions['key'])) { |
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return Factory::fromLine($line['line'], $lineOptions); |
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} |
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/** @phpstan-ignore-next-line */ |
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throw new Exception('Signature mismatch!'); |
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} |
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private static function sign(string $line, string $key): string |
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{ |
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return hash_hmac('sha256', $line, $key, true); |
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} |
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private static function validate(string $signature, string $line, string $key): bool |
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{ |
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return hash_equals($signature, static::sign($line, $key)); |
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} |
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} |
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WyriHaximus /
reactphp-child-process-messenger
