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<?php |
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declare(strict_types=1); |
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namespace BitWasp\Trezor\Bridge\Codec\CallMessage; |
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use GuzzleHttp\Psr7\Stream; |
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use Psr\Http\Message\StreamInterface; |
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class HexCodec |
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{ |
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private function stringToStream(string $stringToConvert) |
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{ |
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$stream = fopen('php://memory', 'w+'); |
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if (!is_resource($stream)) { |
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throw new \RuntimeException("Failed to create stream"); |
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} |
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$wrote = fwrite($stream, $stringToConvert); |
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if ($wrote !== strlen($stringToConvert)) { |
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throw new \RuntimeException("Failed to write to stream"); |
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} |
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rewind($stream); |
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return $stream; |
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} |
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public function convertHexPayloadToBinary(StreamInterface $hexStream): StreamInterface |
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{ |
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if ($hexStream->getSize() < 12) { |
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throw new \Exception("Malformed data (size too small)"); |
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} |
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return new Stream($this->stringToStream(pack("H*", $hexStream->getContents()))); |
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} |
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public function parsePayload(StreamInterface $stream): array |
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{ |
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list ($type) = array_values(unpack('n', $stream->read(2))); |
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$stream->seek(2); |
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list ($size) = array_values(unpack('N', $stream->read(4))); |
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$stream->seek(6); |
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if ($size > ($stream->getSize() - 6)) { |
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throw new \Exception("Malformed data (sent more than size)"); |
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} |
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return [$type, $this->stringToStream($stream->read($size))]; |
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} |
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public function encode(int $messageType, \Protobuf\Message $protobuf): string |
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{ |
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$stream = $protobuf->toStream(); |
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return unpack( |
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'H*', |
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sprintf( |
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"%s%s", |
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pack('nN', $messageType, $stream->getSize()), |
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$stream->getContents() |
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) |
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)[1]; |
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} |
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} |
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Bit-Wasp /
trezor-bridge-client
