def parseBlockHeader(blkHdrBinary): binunpack = BinaryUnpacker(blkHdrBinary) return BlockHeader(binunpack.get(UINT32), binunpack.get(BINARY_CHUNK, 32), binunpack.get(BINARY_CHUNK, 32), binunpack.get(UINT32), binunpack.get(UINT32), binunpack.get(UINT32))
def getBlockHeight(txBinary): binunpack = BinaryUnpacker(txBinary) binunpack.advance(VERSION_LENGTH) txInCount = binunpack.get(VAR_INT) binunpack.advance(TX_OUT_HASH_LENGTH + TX_OUT_INDEX_LENGTH) sigScriptLength = binunpack.get(VAR_INT) binunpack.advance(1) height = binary_to_int(binunpack.get(BINARY_CHUNK, 3)) return height
def getBlockHeight(txBinary): binunpack = BinaryUnpacker(txBinary) binunpack.advance(VERSION_LENGTH) txInCount = binunpack.get(VAR_INT) binunpack.advance(TX_OUT_HASH_LENGTH + TX_OUT_INDEX_LENGTH) sigScriptLength = binunpack.get(VAR_INT) binunpack.advance(1) height = binary_to_int(binunpack.get(BINARY_CHUNK, 3)) return height
def getNextBlock(f): fileOffset = f.tell() f.seek(MAGIC_NUMBER_LENGTH, 1) blkSize = binary_to_int(f.read(BLOCK_SIZE_LENGTH), LITTLEENDIAN) result = None if blkSize > 0: binunpack = BinaryUnpacker(f.read(blkSize)) blkHdrBinary = binunpack.get(BINARY_CHUNK, HEADER_LENGTH) txCount = binunpack.get(VAR_INT) txBinary = binunpack.get(BINARY_CHUNK, binunpack.getRemainingSize()) blockHeight = getBlockHeight(txBinary) result = [sha256(sha256(blkHdrBinary)), blockHeight, fileOffset] else: f.seek(0, 2) return result
def getNextBlock(f): fileOffset = f.tell() f.seek(MAGIC_NUMBER_LENGTH, 1) blkSize = binary_to_int(f.read(BLOCK_SIZE_LENGTH), LITTLEENDIAN) result = None if blkSize > 0: binunpack = BinaryUnpacker(f.read(blkSize)) blkHdrBinary = binunpack.get(BINARY_CHUNK, HEADER_LENGTH) txCount = binunpack.get(VAR_INT) txBinary = binunpack.get(BINARY_CHUNK, binunpack.getRemainingSize()) blockHeight = getBlockHeight(txBinary) result = [sha256(sha256(blkHdrBinary)), blockHeight, fileOffset] else: f.seek(0,2) return result
def parseBlockHeader(blkHdrBinary): binunpack = BinaryUnpacker(blkHdrBinary) return BlockHeader(binunpack.get(UINT32), binunpack.get(BINARY_CHUNK, 32), binunpack.get(BINARY_CHUNK, 32), binunpack.get(UINT32), binunpack.get(UINT32), binunpack.get(UINT32))