def test_getmnlistdiff_quorums(self, baseBlockHash, blockHash,
baseQuorumList, expectedDeleted,
expectedNew):
d = self.test_getmnlistdiff_base(baseBlockHash, blockHash)
assert_equal(set(d.deletedQuorums), set(expectedDeleted))
assert_equal(
set([QuorumId(e.llmqType, e.quorumHash) for e in d.newQuorums]),
set(expectedNew))
newQuorumList = baseQuorumList.copy()
for e in d.deletedQuorums:
newQuorumList.pop(e)
for e in d.newQuorums:
newQuorumList[QuorumId(e.llmqType, e.quorumHash)] = e
hashes = []
for qc in newQuorumList.values():
hashes.append(hash256(qc.serialize()))
hashes.sort()
merkleRoot = CBlock.get_merkle_root(hashes)
assert_equal(merkleRoot, d.merkleRootQuorums)
return newQuorumList
def test_getmnlistdiff(self, baseBlockHash, blockHash, baseMNList,
expectedDeleted, expectedUpdated):
d = self.test_getmnlistdiff_base(baseBlockHash, blockHash)
# Assert that the deletedMNs and mnList fields are what we expected
assert_equal(set(d.deletedMNs),
set([int(e, 16) for e in expectedDeleted]))
assert_equal(set([e.proRegTxHash for e in d.mnList]),
set(int(e, 16) for e in expectedUpdated))
# Build a new list based on the old list and the info from the diff
newMNList = baseMNList.copy()
for e in d.deletedMNs:
newMNList.pop(format(e, '064x'))
for e in d.mnList:
newMNList[format(e.proRegTxHash, '064x')] = e
# Verify that the merkle root matches what we locally calculate
hashes = []
for mn in sorted(newMNList.values(),
key=lambda mn: ser_uint256(mn.proRegTxHash)):
hashes.append(hash256(mn.serialize()))
merkleRoot = CBlock.get_merkle_root(hashes)
assert_equal(merkleRoot, d.merkleRootMNList)
return newMNList
def commits_test(self, node):
def check_headers(number):
wait_until(lambda: node.getblockchaininfo()['headers'] == number, timeout=5)
def check_reject(err, block):
wait_until(lambda: node.p2p.has_reject(err, block), timeout=5)
def getbestblockhash():
return int(node.getbestblockhash(), 16)
def make_block(prev=None, secret=None):
if secret is None:
secret = "default"
coinbase_key = CECKey()
coinbase_key.set_secretbytes(bytes(secret, "utf-8"))
coinbase_pubkey = coinbase_key.get_pubkey()
if prev is None:
block_base_hash = getbestblockhash()
block_time = int(time.time()) + 1
else:
block_base_hash = prev.sha256
block_time = prev.nTime + 1
height = prev.height + 1 if prev else 1
snapshot_hash = 0
stake = self.nodes[0].listunspent()[0]
coinbase = create_coinbase(height, stake, snapshot_hash, coinbase_pubkey)
coinbase.rehash()
b = create_block(block_base_hash, coinbase, block_time)
b.solve()
b.height = height
return b
def make_commits_msg(blocks):
msg = msg_commits(0)
for b in blocks:
hc = HeaderAndCommits()
hc.header = CBlockHeader(b)
msg.data += [hc]
return msg
def send_commits(blocks):
node.p2p.reset_messages()
node.p2p.send_message(make_commits_msg(blocks))
chain = []
def generate(n):
tip = chain[-1] if len(chain) > 0 else None
for i in range(0, n):
tip = make_block(tip)
chain.append(tip)
check_headers(0) # initial state of the node
# generate 10 blocks and send commits
generate(10)
send_commits(chain)
check_headers(10) # node accepted 10 headers
# send same commits again
send_commits(chain)
check_headers(10)
# send last 5 commits
send_commits(chain[-5:])
check_headers(10)
# generate next 10 blocks, try to send commits starting from 2nd block
generate(10)
send_commits(chain[11:])
check_reject(b'prev-blk-not-found', 0) # node rejected orphan headers
check_headers(10) # must keep old amount of headers
# send correct commits
send_commits(chain[10:])
check_headers(20) # node accepted headers
# generate next 10 blocks, send whole chain
generate(10)
send_commits(chain)
check_headers(30) # node accepted headers
# generate next 10 blocks, fool commit in one of them, send them
generate(10)
msg = make_commits_msg(chain[-10:])
malicious_block = copy.deepcopy(chain[-1])
msg.data[-1].commits = malicious_block.vtx # fool commits with coinbase tx
tx = malicious_block.vtx[0]
tx.calc_sha256()
hashes = [ser_uint256(tx.sha256)]
malicious_block.hash_finalizer_commits_merkle_root = CBlock.get_merkle_root(hashes)
malicious_block.rehash()
msg.data[-1].header.hash_finalizer_commits_merkle_root = malicious_block.hash_finalizer_commits_merkle_root
node.p2p.send_message(msg)
check_reject(b'bad-non-commit', malicious_block.sha256) # node rejected commits because of non-commit transaction
check_headers(30) # must keep old amount of headers
# send commits with bad merkle root
msg = make_commits_msg(chain[-10:])
malicious_block = copy.deepcopy(chain[-2])
malicious_block.hash_finalizer_commits_merkle_root = 42
malicious_block.rehash()
msg.data[-2].header.hash_finalizer_commits_merkle_root = malicious_block.hash_finalizer_commits_merkle_root
node.p2p.send_message(msg)
check_reject(b'bad-finalizer-commits-merkle-root', malicious_block.sha256) # node rejected commits because of bad commits merkle root
check_headers(30) # must keep old amount of headers
def run_test(self):
node = self.nodes[0]
self.wallet = MiniWallet(node)
self.mine_chain()
def assert_submitblock(block, result_str_1, result_str_2=None):
block.solve()
result_str_2 = result_str_2 or 'duplicate-invalid'
assert_equal(result_str_1,
node.submitblock(hexdata=block.serialize().hex()))
assert_equal(result_str_2,
node.submitblock(hexdata=block.serialize().hex()))
self.log.info('getmininginfo')
mining_info = node.getmininginfo()
assert_equal(mining_info['blocks'], 200)
assert_equal(mining_info['chain'], self.chain)
assert 'currentblocktx' not in mining_info
assert 'currentblockweight' not in mining_info
assert 'currentblocksize' not in mining_info
assert_equal(mining_info['difficulty'],
Decimal('4.656542373906925E-10'))
assert_equal(mining_info['networkhashps'],
Decimal('0.003333333333333334'))
assert_equal(mining_info['pooledtx'], 0)
self.log.info("getblocktemplate: Test default witness commitment")
txid = int(self.wallet.send_self_transfer(from_node=node)['wtxid'], 16)
tmpl = node.getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)
# Check that default_witness_commitment is present.
assert 'default_witness_commitment' in tmpl
witness_commitment = tmpl['default_witness_commitment']
# Check that default_witness_commitment is correct.
witness_root = CBlock.get_merkle_root(
[ser_uint256(0), ser_uint256(txid)])
script = get_witness_script(witness_root, 0)
assert_equal(witness_commitment, script.hex())
# Mine a block to leave initial block download and clear the mempool
self.generatetoaddress(node, 1,
node.get_deterministic_priv_key().address)
tmpl = node.getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)
self.log.info("getblocktemplate: Test capability advertised")
assert 'proposal' in tmpl['capabilities']
assert 'coinbasetxn' not in tmpl
next_height = int(tmpl["height"])
coinbase_tx = create_coinbase(height=next_height)
# sequence numbers must not be max for nLockTime to have effect
coinbase_tx.vin[0].nSequence = 2**32 - 2
coinbase_tx.rehash()
block = CBlock()
block.nVersion = tmpl["version"]
block.hashPrevBlock = int(tmpl["previousblockhash"], 16)
block.nTime = tmpl["curtime"]
block.nBits = int(tmpl["bits"], 16)
block.nNonce = 0
block.vtx = [coinbase_tx]
self.log.info("getblocktemplate: segwit rule must be set")
assert_raises_rpc_error(
-8, "getblocktemplate must be called with the segwit rule set",
node.getblocktemplate)
self.log.info("getblocktemplate: Test valid block")
assert_template(node, block, None)
self.log.info("submitblock: Test block decode failure")
assert_raises_rpc_error(-22, "Block decode failed", node.submitblock,
block.serialize()[:-15].hex())
self.log.info(
"getblocktemplate: Test bad input hash for coinbase transaction")
bad_block = copy.deepcopy(block)
bad_block.vtx[0].vin[0].prevout.hash += 1
bad_block.vtx[0].rehash()
assert_template(node, bad_block, 'bad-cb-missing')
self.log.info("submitblock: Test invalid coinbase transaction")
assert_raises_rpc_error(-22, "Block does not start with a coinbase",
node.submitblock,
bad_block.serialize().hex())
self.log.info("getblocktemplate: Test truncated final transaction")
assert_raises_rpc_error(
-22, "Block decode failed", node.getblocktemplate, {
'data': block.serialize()[:-1].hex(),
'mode': 'proposal',
'rules': ['segwit'],
})
self.log.info("getblocktemplate: Test duplicate transaction")
bad_block = copy.deepcopy(block)
bad_block.vtx.append(bad_block.vtx[0])
assert_template(node, bad_block, 'bad-txns-duplicate')
assert_submitblock(bad_block, 'bad-txns-duplicate',
'bad-txns-duplicate')
self.log.info("getblocktemplate: Test invalid transaction")
bad_block = copy.deepcopy(block)
bad_tx = copy.deepcopy(bad_block.vtx[0])
bad_tx.vin[0].prevout.hash = 255
bad_tx.rehash()
bad_block.vtx.append(bad_tx)
assert_template(node, bad_block, 'bad-txns-inputs-missingorspent')
assert_submitblock(bad_block, 'bad-txns-inputs-missingorspent')
self.log.info("getblocktemplate: Test nonfinal transaction")
bad_block = copy.deepcopy(block)
bad_block.vtx[0].nLockTime = 2**32 - 1
bad_block.vtx[0].rehash()
assert_template(node, bad_block, 'bad-txns-nonfinal')
assert_submitblock(bad_block, 'bad-txns-nonfinal')
self.log.info("getblocktemplate: Test bad tx count")
# The tx count is immediately after the block header
bad_block_sn = bytearray(block.serialize())
assert_equal(bad_block_sn[BLOCK_HEADER_SIZE], 1)
bad_block_sn[BLOCK_HEADER_SIZE] += 1
assert_raises_rpc_error(-22, "Block decode failed",
node.getblocktemplate, {
'data': bad_block_sn.hex(),
'mode': 'proposal',
'rules': ['segwit'],
})
self.log.info("getblocktemplate: Test bad bits")
bad_block = copy.deepcopy(block)
bad_block.nBits = 469762303 # impossible in the real world
assert_template(node, bad_block, 'bad-diffbits')
self.log.info("getblocktemplate: Test bad merkle root")
bad_block = copy.deepcopy(block)
bad_block.hashMerkleRoot += 1
assert_template(node, bad_block, 'bad-txnmrklroot', False)
assert_submitblock(bad_block, 'bad-txnmrklroot', 'bad-txnmrklroot')
self.log.info("getblocktemplate: Test bad timestamps")
bad_block = copy.deepcopy(block)
bad_block.nTime = 2**31 - 1
assert_template(node, bad_block, 'time-too-new')
assert_submitblock(bad_block, 'time-too-new', 'time-too-new')
bad_block.nTime = 0
assert_template(node, bad_block, 'time-too-old')
assert_submitblock(bad_block, 'time-too-old', 'time-too-old')
self.log.info("getblocktemplate: Test not best block")
bad_block = copy.deepcopy(block)
bad_block.hashPrevBlock = 123
assert_template(node, bad_block, 'inconclusive-not-best-prevblk')
assert_submitblock(bad_block, 'prev-blk-not-found',
'prev-blk-not-found')
self.log.info('submitheader tests')
assert_raises_rpc_error(
-22, 'Block header decode failed',
lambda: node.submitheader(hexdata='xx' * BLOCK_HEADER_SIZE))
assert_raises_rpc_error(
-22, 'Block header decode failed',
lambda: node.submitheader(hexdata='ff' * (BLOCK_HEADER_SIZE - 2)))
assert_raises_rpc_error(
-25, 'Must submit previous header', lambda: node.submitheader(
hexdata=super(CBlock, bad_block).serialize().hex()))
block.nTime += 1
block.solve()
def chain_tip(b_hash, *, status='headers-only', branchlen=1):
return {
'hash': b_hash,
'height': 202,
'branchlen': branchlen,
'status': status
}
assert chain_tip(block.hash) not in node.getchaintips()
node.submitheader(hexdata=block.serialize().hex())
assert chain_tip(block.hash) in node.getchaintips()
node.submitheader(
hexdata=CBlockHeader(block).serialize().hex()) # Noop
assert chain_tip(block.hash) in node.getchaintips()
bad_block_root = copy.deepcopy(block)
bad_block_root.hashMerkleRoot += 2
bad_block_root.solve()
assert chain_tip(bad_block_root.hash) not in node.getchaintips()
node.submitheader(
hexdata=CBlockHeader(bad_block_root).serialize().hex())
assert chain_tip(bad_block_root.hash) in node.getchaintips()
# Should still reject invalid blocks, even if we have the header:
assert_equal(
node.submitblock(hexdata=bad_block_root.serialize().hex()),
'bad-txnmrklroot')
assert_equal(
node.submitblock(hexdata=bad_block_root.serialize().hex()),
'bad-txnmrklroot')
assert chain_tip(bad_block_root.hash) in node.getchaintips()
# We know the header for this invalid block, so should just return early without error:
node.submitheader(
hexdata=CBlockHeader(bad_block_root).serialize().hex())
assert chain_tip(bad_block_root.hash) in node.getchaintips()
bad_block_lock = copy.deepcopy(block)
bad_block_lock.vtx[0].nLockTime = 2**32 - 1
bad_block_lock.vtx[0].rehash()
bad_block_lock.hashMerkleRoot = bad_block_lock.calc_merkle_root()
bad_block_lock.solve()
assert_equal(
node.submitblock(hexdata=bad_block_lock.serialize().hex()),
'bad-txns-nonfinal')
assert_equal(
node.submitblock(hexdata=bad_block_lock.serialize().hex()),
'duplicate-invalid')
# Build a "good" block on top of the submitted bad block
bad_block2 = copy.deepcopy(block)
bad_block2.hashPrevBlock = bad_block_lock.sha256
bad_block2.solve()
assert_raises_rpc_error(
-25, 'bad-prevblk', lambda: node.submitheader(hexdata=CBlockHeader(
bad_block2).serialize().hex()))
# Should reject invalid header right away
bad_block_time = copy.deepcopy(block)
bad_block_time.nTime = 1
bad_block_time.solve()
assert_raises_rpc_error(
-25, 'time-too-old', lambda: node.submitheader(
hexdata=CBlockHeader(bad_block_time).serialize().hex()))
# Should ask for the block from a p2p node, if they announce the header as well:
peer = node.add_p2p_connection(P2PDataStore())
peer.wait_for_getheaders(timeout=5) # Drop the first getheaders
peer.send_blocks_and_test(blocks=[block], node=node)
# Must be active now:
assert chain_tip(block.hash, status='active',
branchlen=0) in node.getchaintips()
# Building a few blocks should give the same results
self.generatetoaddress(node, 10,
node.get_deterministic_priv_key().address)
assert_raises_rpc_error(
-25, 'time-too-old', lambda: node.submitheader(
hexdata=CBlockHeader(bad_block_time).serialize().hex()))
assert_raises_rpc_error(
-25, 'bad-prevblk', lambda: node.submitheader(hexdata=CBlockHeader(
bad_block2).serialize().hex()))
node.submitheader(hexdata=CBlockHeader(block).serialize().hex())
node.submitheader(
hexdata=CBlockHeader(bad_block_root).serialize().hex())
assert_equal(node.submitblock(hexdata=block.serialize().hex()),
'duplicate') # valid
