async def test_timestamp(self, initial_blockchain):
blocks, b = initial_blockchain
# Time too far in the past
block_bad = FullBlock(
HeaderBlock(
blocks[9].header_block.proof_of_space,
blocks[9].header_block.proof_of_time,
blocks[9].header_block.challenge,
Header(
HeaderData(
blocks[9].header_block.header.data.prev_header_hash,
blocks[9].header_block.header.data.timestamp - 1000,
blocks[9].header_block.header.data.filter_hash,
blocks[9].header_block.header.data.proof_of_space_hash,
blocks[9].header_block.header.data.body_hash,
blocks[9].header_block.header.data.extension_data,
),
blocks[9].header_block.header.harvester_signature,
),
),
blocks[9].body,
)
assert (await b.receive_block(
block_bad,
blocks[8].header_block)) == ReceiveBlockResult.INVALID_BLOCK
# Time too far in the future
block_bad = FullBlock(
HeaderBlock(
blocks[9].header_block.proof_of_space,
blocks[9].header_block.proof_of_time,
blocks[9].header_block.challenge,
Header(
HeaderData(
blocks[9].header_block.header.data.prev_header_hash,
uint64(int(time.time() + 3600 * 3)),
blocks[9].header_block.header.data.filter_hash,
blocks[9].header_block.header.data.proof_of_space_hash,
blocks[9].header_block.header.data.body_hash,
blocks[9].header_block.header.data.extension_data,
),
blocks[9].header_block.header.harvester_signature,
),
),
blocks[9].body,
)
assert (await b.receive_block(
block_bad,
blocks[8].header_block)) == ReceiveBlockResult.INVALID_BLOCK
async def header_signature(
self, header_signature: farmer_protocol.HeaderSignature
) -> OutboundMessageGenerator:
"""
Signature of header hash, by the harvester. This is enough to create an unfinished
block, which only needs a Proof of Time to be finished. If the signature is valid,
we call the unfinished_block routine.
"""
async with self.store.lock:
candidate: Optional[
Tuple[Body, HeaderData,
ProofOfSpace]] = await self.store.get_candidate_block(
header_signature.pos_hash)
if candidate is None:
log.warning(
f"PoS hash {header_signature.pos_hash} not found in database"
)
return
# Verifies that we have the correct header and body self.stored
block_body, block_header_data, pos = candidate
assert block_header_data.get_hash() == header_signature.header_hash
block_header: Header = Header(block_header_data,
header_signature.header_signature)
header: HeaderBlock = HeaderBlock(pos, None, None, block_header)
unfinished_block_obj: FullBlock = FullBlock(header, block_body)
# Propagate to ourselves (which validates and does further propagations)
request = peer_protocol.UnfinishedBlock(unfinished_block_obj)
async for m in self.unfinished_block(request):
# Yield all new messages (propagation to peers)
yield m
def get_header_block(self, block: FullBlock) -> Optional[HeaderBlock]:
challenge: Optional[Challenge] = self.get_challenge(block)
if challenge is None or block.proof_of_time is None:
return None
return HeaderBlock(
block.proof_of_space, block.proof_of_time, challenge, block.header
)
async def test_body_hash(self, initial_blockchain):
blocks, b = initial_blockchain
block_bad = FullBlock(
HeaderBlock(
blocks[9].header_block.proof_of_space,
blocks[9].header_block.proof_of_time,
blocks[9].header_block.challenge,
Header(
HeaderData(
blocks[9].header_block.header.data.prev_header_hash,
blocks[9].header_block.header.data.timestamp,
blocks[9].header_block.header.data.filter_hash,
blocks[9].header_block.header.data.proof_of_space_hash,
bytes([1] * 32),
blocks[9].header_block.header.data.extension_data,
),
blocks[9].header_block.header.harvester_signature,
),
),
blocks[9].body,
)
assert (await b.receive_block(
block_bad,
blocks[8].header_block)) == ReceiveBlockResult.INVALID_BLOCK
def get_block_header(self) -> HeaderBlock:
# Create filter
if self.is_block():
byte_array_tx: List[bytes32] = []
removals_names, addition_coins = self.tx_removals_and_additions()
for coin in addition_coins:
byte_array_tx.append(bytearray(coin.puzzle_hash))
for name in removals_names:
byte_array_tx.append(bytearray(name))
for coin in self.get_included_reward_coins():
byte_array_tx.append(bytearray(coin.puzzle_hash))
bip158: PyBIP158 = PyBIP158(byte_array_tx)
encoded_filter: bytes = bytes(bip158.GetEncoded())
else:
encoded_filter = b""
return HeaderBlock(
self.finished_sub_slots,
self.reward_chain_sub_block,
self.challenge_chain_sp_proof,
self.challenge_chain_ip_proof,
self.reward_chain_sp_proof,
self.reward_chain_ip_proof,
self.infused_challenge_chain_ip_proof,
self.foliage_sub_block,
self.foliage_block,
encoded_filter,
self.transactions_info,
)
def get_block_header(self, addition_coins=None, removals_names=None) -> HeaderBlock:
# Create filter
byte_array_tx: List[bytes32] = []
if self.is_transaction_block():
if addition_coins is None or removals_names is None:
removals_names, addition_coins = self.tx_removals_and_additions()
assert removals_names is not None
assert addition_coins is not None
for coin in addition_coins:
byte_array_tx.append(bytearray(coin.puzzle_hash))
for name in removals_names:
byte_array_tx.append(bytearray(name))
for coin in self.get_included_reward_coins():
byte_array_tx.append(bytearray(coin.puzzle_hash))
bip158: PyBIP158 = PyBIP158(byte_array_tx)
encoded_filter: bytes = bytes(bip158.GetEncoded())
return HeaderBlock(
self.finished_sub_slots,
self.reward_chain_block,
self.challenge_chain_sp_proof,
self.challenge_chain_ip_proof,
self.reward_chain_sp_proof,
self.reward_chain_ip_proof,
self.infused_challenge_chain_ip_proof,
self.foliage,
self.foliage_transaction_block,
encoded_filter,
self.transactions_info,
)
async def proof_of_time_finished(
self, request: timelord_protocol.ProofOfTimeFinished
) -> OutboundMessageGenerator:
"""
A proof of time, received by a peer timelord. We can use this to complete a block,
and call the block routine (which handles propagation and verification of blocks).
"""
async with self.store.lock:
dict_key = (
request.proof.challenge_hash,
request.proof.number_of_iterations,
)
unfinished_block_obj: Optional[
FullBlock] = await self.store.get_unfinished_block(dict_key)
if not unfinished_block_obj:
log.warning(
f"Received a proof of time that we cannot use to complete a block {dict_key}"
)
return
prev_full_block = await self.store.get_block(
unfinished_block_obj.prev_header_hash)
assert prev_full_block
prev_block: HeaderBlock = prev_full_block.header_block
difficulty: uint64 = self.blockchain.get_next_difficulty(
unfinished_block_obj.prev_header_hash)
assert prev_block.challenge
challenge: Challenge = Challenge(
request.proof.challenge_hash,
unfinished_block_obj.header_block.proof_of_space.get_hash(),
request.proof.output.get_hash(),
uint32(prev_block.challenge.height + 1),
uint64(prev_block.challenge.total_weight + difficulty),
uint64(prev_block.challenge.total_iters +
request.proof.number_of_iterations),
)
new_header_block = HeaderBlock(
unfinished_block_obj.header_block.proof_of_space,
request.proof,
challenge,
unfinished_block_obj.header_block.header,
)
new_full_block: FullBlock = FullBlock(new_header_block,
unfinished_block_obj.body)
async with self.store.lock:
sync_mode = await self.store.get_sync_mode()
if sync_mode:
async with self.store.lock:
await self.store.add_potential_future_block(new_full_block)
else:
async for msg in self.block(peer_protocol.Block(new_full_block)):
yield msg
async def get_header_block_at(self,
heights: List[uint32]) -> List[HeaderBlock]:
if len(heights) == 0:
return []
heights_db = tuple(heights)
formatted_str = f'SELECT block from header_blocks WHERE height in ({"?," * (len(heights_db) - 1)}?)'
cursor = await self.db.execute(formatted_str, heights_db)
rows = await cursor.fetchall()
await cursor.close()
return [HeaderBlock.from_bytes(row[0]) for row in rows]
def batch_pre_validate_blocks(
constants_dict: Dict,
blocks_pickled: Dict[bytes, bytes],
header_blocks_pickled: List[bytes],
transaction_generators: List[Optional[bytes]],
check_filter: bool,
expected_difficulty: List[uint64],
expected_sub_slot_iters: List[uint64],
validate_transactions: bool,
) -> List[bytes]:
assert len(header_blocks_pickled) == len(transaction_generators)
blocks = {}
for k, v in blocks_pickled.items():
blocks[k] = BlockRecord.from_bytes(v)
results: List[PreValidationResult] = []
constants: ConsensusConstants = dataclass_from_dict(
ConsensusConstants, constants_dict)
for i in range(len(header_blocks_pickled)):
try:
header_block: HeaderBlock = HeaderBlock.from_bytes(
header_blocks_pickled[i])
generator: Optional[bytes] = transaction_generators[i]
required_iters, error = validate_finished_header_block(
constants,
BlockCache(blocks),
header_block,
check_filter,
expected_difficulty[i],
expected_sub_slot_iters[i],
)
cost_result: Optional[CostResult] = None
error_int: Optional[uint16] = None
if error is not None:
error_int = uint16(error.code.value)
if constants_dict["NETWORK_TYPE"] == NetworkType.MAINNET.value:
cost_result = None
else:
if not error and generator is not None and validate_transactions:
cost_result = calculate_cost_of_program(
SerializedProgram.from_bytes(generator),
constants.CLVM_COST_RATIO_CONSTANT)
results.append(
PreValidationResult(error_int, required_iters, cost_result))
except Exception:
error_stack = traceback.format_exc()
log.error(f"Exception: {error_stack}")
results.append(
PreValidationResult(uint16(Err.UNKNOWN.value), None, None))
return [bytes(r) for r in results]
async def test_harvester_signature(self, initial_blockchain):
blocks, b = initial_blockchain
# Time too far in the past
block_bad = FullBlock(
HeaderBlock(
blocks[9].header_block.proof_of_space,
blocks[9].header_block.proof_of_time,
blocks[9].header_block.challenge,
Header(
blocks[9].header_block.header.data,
PrivateKey.from_seed(b"0").sign_prepend(b"random junk"),
),
),
blocks[9].body,
)
assert (await b.receive_block(block_bad)) == ReceiveBlockResult.INVALID_BLOCK
async def get_header_blocks_in_range(
self,
start: int,
stop: int,
) -> Dict[bytes32, HeaderBlock]:
formatted_str = f"SELECT header_hash, block from header_blocks WHERE height >= {start} and height <= {stop}"
cursor = await self.db.execute(formatted_str)
rows = await cursor.fetchall()
await cursor.close()
ret: Dict[bytes32, HeaderBlock] = {}
for row in rows:
header_hash_bytes, sub_block_bytes = row
header_hash = bytes.fromhex(header_hash_bytes)
ret[header_hash] = HeaderBlock.from_bytes(sub_block_bytes)
return ret
async def test_invalid_pos(self, initial_blockchain):
blocks, b = initial_blockchain
bad_pos = [i for i in blocks[9].header_block.proof_of_space.proof]
bad_pos[0] = uint8((bad_pos[0] + 1) % 256)
# Proof of space invalid
block_bad = FullBlock(
HeaderBlock(
ProofOfSpace(
blocks[9].header_block.proof_of_space.challenge_hash,
blocks[9].header_block.proof_of_space.pool_pubkey,
blocks[9].header_block.proof_of_space.plot_pubkey,
blocks[9].header_block.proof_of_space.size,
bad_pos,
),
blocks[9].header_block.proof_of_time,
blocks[9].header_block.challenge,
blocks[9].header_block.header,
),
blocks[9].body,
)
assert (await b.receive_block(block_bad)) == ReceiveBlockResult.INVALID_BLOCK
def _create_block(
self,
test_constants: Dict,
challenge_hash: bytes32,
height: uint32,
prev_header_hash: bytes32,
prev_iters: uint64,
prev_weight: uint64,
timestamp: uint64,
difficulty: uint64,
ips: uint64,
seed: bytes,
) -> FullBlock:
"""
Creates a block with the specified details. Uses the stored plots to create a proof of space,
and also evaluates the VDF for the proof of time.
"""
prover = None
plot_pk = None
plot_sk = None
qualities: List[bytes] = []
for pn in range(num_plots):
# Allow passing in seed, to create reorgs and different chains
seeded_pn = (pn + 17 * int.from_bytes(seed, "big")) % num_plots
filename = self.filenames[seeded_pn]
plot_pk = plot_pks[seeded_pn]
plot_sk = plot_sks[seeded_pn]
prover = DiskProver(os.path.join(self.plot_dir, filename))
qualities = prover.get_qualities_for_challenge(challenge_hash)
if len(qualities) > 0:
break
assert prover
assert plot_pk
assert plot_sk
if len(qualities) == 0:
raise NoProofsOfSpaceFound("No proofs for this challenge")
proof_xs: bytes = prover.get_full_proof(challenge_hash, 0)
proof_of_space: ProofOfSpace = ProofOfSpace(
challenge_hash, pool_pk, plot_pk, k, [uint8(b) for b in proof_xs])
number_iters: uint64 = pot_iterations.calculate_iterations(
proof_of_space, difficulty, ips, test_constants["MIN_BLOCK_TIME"])
disc: int = create_discriminant(
challenge_hash, test_constants["DISCRIMINANT_SIZE_BITS"])
start_x: ClassGroup = ClassGroup.from_ab_discriminant(2, 1, disc)
y_cl, proof_bytes = create_proof_of_time_nwesolowski(
disc, start_x, number_iters, disc, n_wesolowski)
output = ClassgroupElement(y_cl[0], y_cl[1])
proof_of_time = ProofOfTime(
challenge_hash,
number_iters,
output,
n_wesolowski,
[uint8(b) for b in proof_bytes],
)
coinbase: CoinbaseInfo = CoinbaseInfo(
height,
block_rewards.calculate_block_reward(uint32(height)),
coinbase_target,
)
coinbase_sig: PrependSignature = pool_sk.sign_prepend(bytes(coinbase))
fees_target: FeesTarget = FeesTarget(fee_target, uint64(0))
solutions_generator: bytes32 = sha256(seed).digest()
cost = uint64(0)
body: Body = Body(coinbase, coinbase_sig, fees_target, None,
solutions_generator, cost)
header_data: HeaderData = HeaderData(
prev_header_hash,
timestamp,
bytes([0] * 32),
proof_of_space.get_hash(),
body.get_hash(),
bytes([0] * 32),
)
header_hash_sig: PrependSignature = plot_sk.sign_prepend(
header_data.get_hash())
header: Header = Header(header_data, header_hash_sig)
challenge = Challenge(
challenge_hash,
proof_of_space.get_hash(),
proof_of_time.get_hash(),
height,
uint64(prev_weight + difficulty),
uint64(prev_iters + number_iters),
)
header_block = HeaderBlock(proof_of_space, proof_of_time, challenge,
header)
full_block: FullBlock = FullBlock(header_block, body)
return full_block
async def create(
key_config: Dict,
config: Dict,
db_path: Path,
constants: Dict,
name: str = None,
):
self = WalletStateManager()
self.config = config
self.constants = constants
if name:
self.log = logging.getLogger(name)
else:
self.log = logging.getLogger(__name__)
self.lock = asyncio.Lock()
self.db_connection = await aiosqlite.connect(db_path)
self.wallet_store = await WalletStore.create(self.db_connection)
self.tx_store = await WalletTransactionStore.create(self.db_connection)
self.puzzle_store = await WalletPuzzleStore.create(self.db_connection)
self.user_store = await WalletUserStore.create(self.db_connection)
self.lca = None
self.sync_mode = False
self.height_to_hash = {}
self.block_records = await self.wallet_store.get_lca_path()
genesis = FullBlock.from_bytes(self.constants["GENESIS_BLOCK"])
self.genesis = genesis
self.state_changed_callback = None
self.pending_tx_callback = None
self.difficulty_resets_prev = {}
self.db_path = db_path
main_wallet_info = await self.user_store.get_wallet_by_id(1)
assert main_wallet_info is not None
self.main_wallet = await Wallet.create(config, key_config, self,
main_wallet_info)
self.wallets = {}
main_wallet = await Wallet.create(config, key_config, self,
main_wallet_info)
self.wallets[main_wallet_info.id] = main_wallet
for wallet_info in await self.get_all_wallets():
self.log.info(f"wallet_info {wallet_info}")
if wallet_info.type == WalletType.STANDARD_WALLET:
if wallet_info.id == 1:
continue
wallet = await Wallet.create(config, key_config, self,
main_wallet_info)
self.wallets[wallet_info.id] = wallet
elif wallet_info.type == WalletType.RATE_LIMITED:
wallet = await RLWallet.create(
config,
key_config,
self,
wallet_info,
self.main_wallet,
)
self.wallets[wallet_info.id] = wallet
async with self.puzzle_store.lock:
await self.create_more_puzzle_hashes(from_zero=True)
if len(self.block_records) > 0:
# Initializes the state based on the DB block records
# Header hash with the highest weight
self.lca = max((item[1].weight, item[0])
for item in self.block_records.items())[1]
for key, value in self.block_records.items():
self.height_to_hash[value.height] = value.header_hash
# Checks genesis block is the same in config, as in DB
assert self.block_records[genesis.header_hash].height == 0
assert self.block_records[
genesis.header_hash].weight == genesis.weight
else:
# Loads the genesis block if there are no blocks
genesis_challenge = Challenge(
genesis.proof_of_space.challenge_hash,
std_hash(genesis.proof_of_space.get_hash() +
genesis.proof_of_time.output.get_hash()),
None,
)
genesis_hb = HeaderBlock(
genesis.proof_of_space,
genesis.proof_of_time,
genesis_challenge,
genesis.header,
)
await self.receive_block(
BlockRecord(
genesis.header_hash,
genesis.prev_header_hash,
uint32(0),
genesis.weight,
[],
[],
genesis_hb.header.data.total_iters,
genesis_challenge.get_hash(),
),
genesis_hb,
)
return self