def run_test(self):
self.nodes[0].add_p2p_connection(P2PDataStore())
self.log.info("Generate blocks in the past for coinbase outputs.")
long_past_time = int(
time.time()
) - 600 * 1000 # enough to build up to 1000 blocks 10 minutes apart without worrying about getting into the future
self.nodes[0].setmocktime(
long_past_time - 100
) # enough so that the generated blocks will still all be before long_past_time
self.coinbase_blocks = self.nodes[0].generate(
1 + 16 + 2 * 32 + 1) # 82 blocks generated for inputs
self.nodes[0].setmocktime(
0
) # set time back to present so yielded blocks aren't in the future as we advance last_block_time
self.tipheight = 82 # height of the next block to build
self.last_block_time = long_past_time
self.tip = int(self.nodes[0].getbestblockhash(), 16)
self.nodeaddress = self.nodes[0].getnewaddress()
self.log.info("Test that the csv softfork is DEFINED")
assert_equal(
get_bip9_status(self.nodes[0], 'csv')['status'], 'defined')
test_blocks = self.generate_blocks(61, 4)
self.sync_blocks(test_blocks)
self.log.info("Advance from DEFINED to STARTED, height = 143")
assert_equal(
get_bip9_status(self.nodes[0], 'csv')['status'], 'started')
self.log.info("Fail to achieve LOCKED_IN")
# 100 out of 144 signal bit 0. Use a variety of bits to simulate multiple parallel softforks
test_blocks = self.generate_blocks(
50, 536870913) # 0x20000001 (signalling ready)
test_blocks = self.generate_blocks(
20, 4, test_blocks) # 0x00000004 (signalling not)
test_blocks = self.generate_blocks(
50, 536871169, test_blocks) # 0x20000101 (signalling ready)
test_blocks = self.generate_blocks(
24, 536936448, test_blocks) # 0x20010000 (signalling not)
self.sync_blocks(test_blocks)
self.log.info("Failed to advance past STARTED, height = 287")
assert_equal(
get_bip9_status(self.nodes[0], 'csv')['status'], 'started')
self.log.info("Generate blocks to achieve LOCK-IN")
# 108 out of 144 signal bit 0 to achieve lock-in
# using a variety of bits to simulate multiple parallel softforks
test_blocks = self.generate_blocks(
58, 536870913) # 0x20000001 (signalling ready)
test_blocks = self.generate_blocks(
26, 4, test_blocks) # 0x00000004 (signalling not)
test_blocks = self.generate_blocks(
50, 536871169, test_blocks) # 0x20000101 (signalling ready)
test_blocks = self.generate_blocks(
10, 536936448, test_blocks) # 0x20010000 (signalling not)
self.sync_blocks(test_blocks)
self.log.info("Advanced from STARTED to LOCKED_IN, height = 431")
assert_equal(
get_bip9_status(self.nodes[0], 'csv')['status'], 'locked_in')
# Generate 140 more version 4 blocks
test_blocks = self.generate_blocks(140, 4)
self.sync_blocks(test_blocks)
# Inputs at height = 572
#
# Put inputs for all tests in the chain at height 572 (tip now = 571) (time increases by 600s per block)
# Note we reuse inputs for v1 and v2 txs so must test these separately
# 16 normal inputs
bip68inputs = []
for i in range(16):
bip68inputs.append(
send_generic_input_tx(self.nodes[0], self.coinbase_blocks,
self.nodeaddress))
# 2 sets of 16 inputs with 10 OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
bip112basicinputs = []
for j in range(2):
inputs = []
for i in range(16):
inputs.append(
send_generic_input_tx(self.nodes[0], self.coinbase_blocks,
self.nodeaddress))
bip112basicinputs.append(inputs)
# 2 sets of 16 varied inputs with (relative_lock_time) OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
bip112diverseinputs = []
for j in range(2):
inputs = []
for i in range(16):
inputs.append(
send_generic_input_tx(self.nodes[0], self.coinbase_blocks,
self.nodeaddress))
bip112diverseinputs.append(inputs)
# 1 special input with -1 OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
bip112specialinput = send_generic_input_tx(self.nodes[0],
self.coinbase_blocks,
self.nodeaddress)
# 1 normal input
bip113input = send_generic_input_tx(self.nodes[0],
self.coinbase_blocks,
self.nodeaddress)
self.nodes[0].setmocktime(self.last_block_time + 600)
inputblockhash = self.nodes[0].generate(1)[
0] # 1 block generated for inputs to be in chain at height 572
self.nodes[0].setmocktime(0)
self.tip = int(inputblockhash, 16)
self.tipheight += 1
self.last_block_time += 600
assert_equal(len(self.nodes[0].getblock(inputblockhash, True)["tx"]),
82 + 1)
# 2 more version 4 blocks
test_blocks = self.generate_blocks(2, 4)
self.sync_blocks(test_blocks)
self.log.info(
"Not yet advanced to ACTIVE, height = 574 (will activate for block 576, not 575)"
)
assert_equal(
get_bip9_status(self.nodes[0], 'csv')['status'], 'locked_in')
# Test both version 1 and version 2 transactions for all tests
# BIP113 test transaction will be modified before each use to put in appropriate block time
bip113tx_v1 = create_transaction(self.nodes[0],
bip113input,
self.nodeaddress,
amount=Decimal("49.98"))
bip113tx_v1.vin[0].nSequence = 0xFFFFFFFE
bip113tx_v1.nVersion = 1
bip113tx_v2 = create_transaction(self.nodes[0],
bip113input,
self.nodeaddress,
amount=Decimal("49.98"))
bip113tx_v2.vin[0].nSequence = 0xFFFFFFFE
bip113tx_v2.nVersion = 2
# For BIP68 test all 16 relative sequence locktimes
bip68txs_v1 = create_bip68txs(self.nodes[0], bip68inputs, 1,
self.nodeaddress)
bip68txs_v2 = create_bip68txs(self.nodes[0], bip68inputs, 2,
self.nodeaddress)
# For BIP112 test:
# 16 relative sequence locktimes of 10 against 10 OP_CSV OP_DROP inputs
bip112txs_vary_nSequence_v1 = create_bip112txs(self.nodes[0],
bip112basicinputs[0],
False, 1,
self.nodeaddress)
bip112txs_vary_nSequence_v2 = create_bip112txs(self.nodes[0],
bip112basicinputs[0],
False, 2,
self.nodeaddress)
# 16 relative sequence locktimes of 9 against 10 OP_CSV OP_DROP inputs
bip112txs_vary_nSequence_9_v1 = create_bip112txs(
self.nodes[0], bip112basicinputs[1], False, 1, self.nodeaddress,
-1)
bip112txs_vary_nSequence_9_v2 = create_bip112txs(
self.nodes[0], bip112basicinputs[1], False, 2, self.nodeaddress,
-1)
# sequence lock time of 10 against 16 (relative_lock_time) OP_CSV OP_DROP inputs
bip112txs_vary_OP_CSV_v1 = create_bip112txs(self.nodes[0],
bip112diverseinputs[0],
True, 1, self.nodeaddress)
bip112txs_vary_OP_CSV_v2 = create_bip112txs(self.nodes[0],
bip112diverseinputs[0],
True, 2, self.nodeaddress)
# sequence lock time of 9 against 16 (relative_lock_time) OP_CSV OP_DROP inputs
bip112txs_vary_OP_CSV_9_v1 = create_bip112txs(self.nodes[0],
bip112diverseinputs[1],
True, 1,
self.nodeaddress, -1)
bip112txs_vary_OP_CSV_9_v2 = create_bip112txs(self.nodes[0],
bip112diverseinputs[1],
True, 2,
self.nodeaddress, -1)
# -1 OP_CSV OP_DROP input
bip112tx_special_v1 = create_bip112special(self.nodes[0],
bip112specialinput, 1,
self.nodeaddress)
bip112tx_special_v2 = create_bip112special(self.nodes[0],
bip112specialinput, 2,
self.nodeaddress)
self.log.info("TESTING")
self.log.info("Pre-Soft Fork Tests. All txs should pass.")
self.log.info("Test version 1 txs")
success_txs = []
# add BIP113 tx and -1 CSV tx
bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
success_txs.append(bip113signed1)
success_txs.append(bip112tx_special_v1)
# add BIP 68 txs
success_txs.extend(all_rlt_txs(bip68txs_v1))
# add BIP 112 with seq=10 txs
success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_v1))
success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_v1))
# try BIP 112 with seq=9 txs
success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_9_v1))
success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_9_v1))
self.sync_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
self.log.info("Test version 2 txs")
success_txs = []
# add BIP113 tx and -1 CSV tx
bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
success_txs.append(bip113signed2)
success_txs.append(bip112tx_special_v2)
# add BIP 68 txs
success_txs.extend(all_rlt_txs(bip68txs_v2))
# add BIP 112 with seq=10 txs
success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_v2))
success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_v2))
# try BIP 112 with seq=9 txs
success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_9_v2))
success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_9_v2))
self.sync_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# 1 more version 4 block to get us to height 575 so the fork should now be active for the next block
test_blocks = self.generate_blocks(1, 4)
self.sync_blocks(test_blocks)
assert_equal(get_bip9_status(self.nodes[0], 'csv')['status'], 'active')
self.log.info("Post-Soft Fork Tests.")
self.log.info("BIP 113 tests")
# BIP 113 tests should now fail regardless of version number if nLockTime isn't satisfied by new rules
bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
for bip113tx in [bip113signed1, bip113signed2]:
self.sync_blocks([self.create_test_block([bip113tx])],
success=False)
# BIP 113 tests should now pass if the locktime is < MTP
bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 - 1 # < MTP of prior block
bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 - 1 # < MTP of prior block
bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
for bip113tx in [bip113signed1, bip113signed2]:
self.sync_blocks([self.create_test_block([bip113tx])])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# Next block height = 580 after 4 blocks of random version
test_blocks = self.generate_blocks(4, 1234)
self.sync_blocks(test_blocks)
self.log.info("BIP 68 tests")
self.log.info("Test version 1 txs - all should still pass")
success_txs = []
success_txs.extend(all_rlt_txs(bip68txs_v1))
self.sync_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
self.log.info("Test version 2 txs")
# All txs with SEQUENCE_LOCKTIME_DISABLE_FLAG set pass
bip68success_txs = [tx['tx'] for tx in bip68txs_v2 if tx['sdf']]
self.sync_blocks([self.create_test_block(bip68success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# All txs without flag fail as we are at delta height = 8 < 10 and delta time = 8 * 600 < 10 * 512
bip68timetxs = [
tx['tx'] for tx in bip68txs_v2 if not tx['sdf'] and tx['stf']
]
for tx in bip68timetxs:
self.sync_blocks([self.create_test_block([tx])], success=False)
bip68heighttxs = [
tx['tx'] for tx in bip68txs_v2 if not tx['sdf'] and not tx['stf']
]
for tx in bip68heighttxs:
self.sync_blocks([self.create_test_block([tx])], success=False)
# Advance one block to 581
test_blocks = self.generate_blocks(1, 1234)
self.sync_blocks(test_blocks)
# Height txs should fail and time txs should now pass 9 * 600 > 10 * 512
bip68success_txs.extend(bip68timetxs)
self.sync_blocks([self.create_test_block(bip68success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
for tx in bip68heighttxs:
self.sync_blocks([self.create_test_block([tx])], success=False)
# Advance one block to 582
test_blocks = self.generate_blocks(1, 1234)
self.sync_blocks(test_blocks)
# All BIP 68 txs should pass
bip68success_txs.extend(bip68heighttxs)
self.sync_blocks([self.create_test_block(bip68success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
self.log.info("BIP 112 tests")
self.log.info("Test version 1 txs")
# -1 OP_CSV tx should fail
self.sync_blocks([self.create_test_block([bip112tx_special_v1])],
success=False)
# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in argument to OP_CSV, version 1 txs should still pass
success_txs = [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v1 if tx['sdf']
]
success_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v1 if tx['sdf']
]
self.sync_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# If SEQUENCE_LOCKTIME_DISABLE_FLAG is unset in argument to OP_CSV, version 1 txs should now fail
fail_txs = all_rlt_txs(bip112txs_vary_nSequence_v1)
fail_txs += all_rlt_txs(bip112txs_vary_nSequence_9_v1)
fail_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v1 if not tx['sdf']
]
fail_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v1 if not tx['sdf']
]
for tx in fail_txs:
self.sync_blocks([self.create_test_block([tx])], success=False)
self.log.info("Test version 2 txs")
# -1 OP_CSV tx should fail
self.sync_blocks([self.create_test_block([bip112tx_special_v2])],
success=False)
# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in argument to OP_CSV, version 2 txs should pass (all sequence locks are met)
success_txs = [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v2 if tx['sdf']
]
success_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v2 if tx['sdf']
]
self.sync_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# SEQUENCE_LOCKTIME_DISABLE_FLAG is unset in argument to OP_CSV for all remaining txs ##
# All txs with nSequence 9 should fail either due to earlier mismatch or failing the CSV check
fail_txs = all_rlt_txs(bip112txs_vary_nSequence_9_v2)
fail_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v2 if not tx['sdf']
]
for tx in fail_txs:
self.sync_blocks([self.create_test_block([tx])], success=False)
# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in nSequence, tx should fail
fail_txs = [
tx['tx'] for tx in bip112txs_vary_nSequence_v2 if tx['sdf']
]
for tx in fail_txs:
self.sync_blocks([self.create_test_block([tx])], success=False)
# If sequencelock types mismatch, tx should fail
fail_txs = [
tx['tx'] for tx in bip112txs_vary_nSequence_v2
if not tx['sdf'] and tx['stf']
]
fail_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v2
if not tx['sdf'] and tx['stf']
]
for tx in fail_txs:
self.sync_blocks([self.create_test_block([tx])], success=False)
# Remaining txs should pass, just test masking works properly
success_txs = [
tx['tx'] for tx in bip112txs_vary_nSequence_v2
if not tx['sdf'] and not tx['stf']
]
success_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v2
if not tx['sdf'] and not tx['stf']
]
self.sync_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# Additional test, of checking that comparison of two time types works properly
time_txs = []
for tx in [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v2
if not tx['sdf'] and tx['stf']
]:
tx.vin[0].nSequence = BASE_RELATIVE_LOCKTIME | SEQ_TYPE_FLAG
signtx = sign_transaction(self.nodes[0], tx)
time_txs.append(signtx)
self.sync_blocks([self.create_test_block(time_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
def run_test(self):
(node, ) = self.nodes
node.add_p2p_connection(P2PDataStore())
# Get out of IBD
node.generatetoaddress(1, node.get_deterministic_priv_key().address)
tip = self.getbestblock(node)
self.log.info("Create some blocks with OP_1 coinbase for spending.")
blocks = []
for _ in range(20):
tip = self.build_block(tip)
blocks.append(tip)
node.p2p.send_blocks_and_test(blocks, node)
self.spendable_outputs = deque(block.vtx[0] for block in blocks)
self.log.info("Mature the blocks.")
node.generatetoaddress(100, node.get_deterministic_priv_key().address)
tip = self.getbestblock(node)
# To make compact and fast-to-verify transactions, we'll use
# CHECKDATASIG over and over with the same data.
# (Using the same stuff over and over again means we get to hit the
# node's signature cache and don't need to make new signatures every
# time.)
cds_message = b''
# r=1 and s=1 ecdsa, the minimum values.
cds_signature = bytes.fromhex('3006020101020101')
# Recovered pubkey
cds_pubkey = bytes.fromhex(
'03089b476b570d66fad5a20ae6188ebbaf793a4c2a228c65f3d79ee8111d56c932'
)
fundings = []
def make_spend(scriptpubkey, scriptsig):
# Add a funding tx to fundings, and return a tx spending that using
# scriptsig.
self.log.debug(
"Gen tx with locking script {} unlocking script {} .".format(
scriptpubkey.hex(), scriptsig.hex()))
# get funds locked with OP_1
sourcetx = self.spendable_outputs.popleft()
# make funding that forwards to scriptpubkey
fundtx = create_transaction(sourcetx, scriptpubkey)
fundings.append(fundtx)
# make the spending
tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(fundtx.sha256, 1), scriptsig))
tx.vout.append(CTxOut(0, CScript([OP_RETURN])))
pad_tx(tx)
tx.rehash()
return tx
self.log.info("Generating txes used in this test")
# "Good" txns that pass our rule:
goodtxes = [
# most dense allowed input -- 2 sigchecks with a 26-byte scriptsig.
make_spend(
CScript([
cds_message, cds_pubkey, OP_3DUP, OP_CHECKDATASIGVERIFY,
OP_CHECKDATASIGVERIFY
]), CScript([b'x' * 16, cds_signature])),
# 4 sigchecks with a 112-byte scriptsig, just at the limit for this
# sigchecks count.
make_spend(
CScript([
cds_message, cds_pubkey, OP_3DUP, OP_CHECKDATASIGVERIFY,
OP_3DUP, OP_CHECKDATASIGVERIFY, OP_3DUP,
OP_CHECKDATASIGVERIFY, OP_CHECKDATASIGVERIFY
]), CScript([b'x' * 101, cds_signature])),
# "nice" transaction - 1 sigcheck with 9-byte scriptsig.
make_spend(CScript([cds_message, cds_pubkey, OP_CHECKDATASIG]),
CScript([cds_signature])),
# 1 sigcheck with 0-byte scriptsig.
make_spend(
CScript(
[cds_signature, cds_message, cds_pubkey, OP_CHECKDATASIG]),
CScript([])),
]
badtxes = [
# "Bad" txns:
# 2 sigchecks with a 25-byte scriptsig, just 1 byte too short.
make_spend(
CScript([
cds_message, cds_pubkey, OP_3DUP, OP_CHECKDATASIGVERIFY,
OP_CHECKDATASIGVERIFY
]), CScript([b'x' * 15, cds_signature])),
# 4 sigchecks with a 111-byte scriptsig, just 1 byte too short.
make_spend(
CScript([
cds_message, cds_pubkey, OP_3DUP, OP_CHECKDATASIGVERIFY,
OP_3DUP, OP_CHECKDATASIGVERIFY, OP_3DUP,
OP_CHECKDATASIGVERIFY, OP_CHECKDATASIGVERIFY
]), CScript([b'x' * 100, cds_signature])),
]
goodtxids = set(t.hash for t in goodtxes)
badtxids = set(t.hash for t in badtxes)
self.log.info("Funding the txes")
tip = self.build_block(tip, fundings)
node.p2p.send_blocks_and_test([tip], node)
# Activation tests
self.log.info("Approach to just before upgrade activation")
# Move our clock to the uprade time so we will accept such
# future-timestamped blocks.
node.setmocktime(SIGCHECKS_ACTIVATION_TIME + 10)
# Mine six blocks with timestamp starting at
# SIGCHECKS_ACTIVATION_TIME-1
blocks = []
for i in range(-1, 5):
tip = self.build_block(tip, nTime=SIGCHECKS_ACTIVATION_TIME + i)
blocks.append(tip)
node.p2p.send_blocks_and_test(blocks, node)
assert_equal(node.getblockchaininfo()['mediantime'],
SIGCHECKS_ACTIVATION_TIME - 1)
self.log.info(
"The next block will activate, but the activation block itself must follow old rules"
)
self.log.info("Send all the transactions just before upgrade")
node.p2p.send_txs_and_test(goodtxes, node)
node.p2p.send_txs_and_test(badtxes, node)
assert_equal(set(node.getrawmempool()), goodtxids | badtxids)
# ask the node to mine a block, it should include the bad txes.
[blockhash
] = node.generatetoaddress(1,
node.get_deterministic_priv_key().address)
assert_equal(set(node.getblock(blockhash, 1)['tx'][1:]),
goodtxids | badtxids)
assert_equal(node.getrawmempool(), [])
# discard that block
node.invalidateblock(blockhash)
assert_equal(set(node.getrawmempool()), goodtxids | badtxids)
self.log.info("Mine the activation block itself")
tip = self.build_block(tip)
node.p2p.send_blocks_and_test([tip], node)
self.log.info("We have activated!")
assert_equal(node.getblockchaininfo()['mediantime'],
SIGCHECKS_ACTIVATION_TIME)
self.log.info(
"The high-sigchecks transactions got evicted but the good ones are still around"
)
assert_equal(set(node.getrawmempool()), goodtxids)
self.log.info(
"Now the high-sigchecks transactions are rejected from mempool.")
# try sending some of the bad txes again after the upgrade
for tx in badtxes:
check_for_no_ban_on_rejected_tx(node, tx, TX_INPUT_SIGCHECKS_ERROR)
assert_raises_rpc_error(-26, TX_INPUT_SIGCHECKS_ERROR,
node.sendrawtransaction, ToHex(tx))
self.log.info("But they can still be mined!")
# now make a block with all the txes, they still are accepted in
# blocks!
tip = self.build_block(tip, goodtxes + badtxes)
node.p2p.send_blocks_and_test([tip], node)
assert_equal(node.getbestblockhash(), tip.hash)
def run_test(self):
node = self.nodes[0]
node.add_p2p_connection(P2PDataStore())
node.setmocktime(ACTIVATION_TIME)
self.genesis_hash = int(node.getbestblockhash(), 16)
self.block_heights[self.genesis_hash] = 0
spendable_outputs = []
# save the current tip so it can be spent by a later block
def save_spendable_output():
spendable_outputs.append(self.tip)
# get an output that we previously marked as spendable
def get_spendable_output():
return PreviousSpendableOutput(spendable_outputs.pop(0).vtx[0], 0)
# move the tip back to a previous block
def tip(number):
self.tip = self.blocks[number]
# adds transactions to the block and updates state
def update_block(block_number, new_transactions):
block = self.blocks[block_number]
block.vtx.extend(new_transactions)
old_sha256 = block.sha256
make_conform_to_ctor(block)
block.hashMerkleRoot = block.calc_merkle_root()
block.solve()
# Update the internal state just like in next_block
self.tip = block
if block.sha256 != old_sha256:
self.block_heights[
block.sha256] = self.block_heights[old_sha256]
del self.block_heights[old_sha256]
self.blocks[block_number] = block
return block
# send a txn to the mempool and check it was accepted
def send_transaction_to_mempool(tx):
tx_id = node.sendrawtransaction(ToHex(tx))
assert tx_id in node.getrawmempool()
# checks the mempool has exactly the same txns as in the provided list
def check_mempool_equal(txns):
assert set(node.getrawmempool()) == set(tx.hash for tx in txns)
# Create an always-valid chained transaction. It spends a
# scriptPub=OP_TRUE coin into another. Returns the transaction and its
# spendable output for further chaining.
def create_always_valid_chained_tx(spend):
tx = create_tx_with_script(spend.tx,
spend.n,
b'',
amount=spend.tx.vout[0].nValue - 1000,
script_pub_key=CScript([OP_TRUE]))
tx.rehash()
return tx, PreviousSpendableOutput(tx, 0)
# shorthand
block = self.next_block
# Create a new block
block(0)
save_spendable_output()
node.p2p.send_blocks_and_test([self.tip], node)
# Now we need that block to mature so we can spend the coinbase.
maturity_blocks = []
for i in range(110):
block(5000 + i)
maturity_blocks.append(self.tip)
save_spendable_output()
node.p2p.send_blocks_and_test(maturity_blocks, node)
# collect spendable outputs now to avoid cluttering the code later on
out = []
for i in range(100):
out.append(get_spendable_output())
# Create 2 pre-fork-only txns (tx_pre0, tx_pre1). Fund txns are valid
# pre-fork, so we can mine them right away.
txfund0, tx_pre0 = create_fund_and_pre_fork_only_tx(out[0])
txfund1, tx_pre1 = create_fund_and_pre_fork_only_tx(out[1])
# Create 2 post-fork-only txns (tx_post0, tx_post1). Fund txns are
# valid pre-fork, so we can mine them right away.
txfund2, tx_post0 = create_fund_and_post_fork_only_tx(out[2])
txfund3, tx_post1 = create_fund_and_post_fork_only_tx(out[3])
# Create blocks to activate the fork. Mine all funding transactions.
bfork = block(5555)
bfork.nTime = ACTIVATION_TIME - 1
update_block(5555, [txfund0, txfund1, txfund2, txfund3])
node.p2p.send_blocks_and_test([self.tip], node)
for i in range(5):
node.p2p.send_blocks_and_test([block(5200 + i)], node)
# Check we are just before the activation time
assert_equal(node.getblockchaininfo()['mediantime'],
ACTIVATION_TIME - 1)
# We are just before the fork. Pre-fork-only and always-valid chained
# txns (tx_chain0, tx_chain1) are valid, post-fork-only txns are
# rejected.
send_transaction_to_mempool(tx_pre0)
send_transaction_to_mempool(tx_pre1)
tx_chain0, last_chained_output = create_always_valid_chained_tx(out[4])
tx_chain1, last_chained_output = create_always_valid_chained_tx(
last_chained_output)
send_transaction_to_mempool(tx_chain0)
send_transaction_to_mempool(tx_chain1)
assert_raises_rpc_error(-26, RPC_EXPECTED_ERROR,
node.sendrawtransaction, ToHex(tx_post0))
assert_raises_rpc_error(-26, RPC_EXPECTED_ERROR,
node.sendrawtransaction, ToHex(tx_post1))
check_mempool_equal([tx_chain0, tx_chain1, tx_pre0, tx_pre1])
# Activate the fork. Mine the 1st always-valid chained txn and a
# pre-fork-only txn.
block(5556)
update_block(5556, [tx_chain0, tx_pre0])
node.p2p.send_blocks_and_test([self.tip], node)
forkblockid = node.getbestblockhash()
# Check we just activated the fork
assert_equal(
node.getblockheader(forkblockid)['mediantime'], ACTIVATION_TIME)
# Check mempool coherence when activating the fork. Pre-fork-only txns
# were evicted from the mempool, while always-valid txns remain.
# Evicted: tx_pre1
check_mempool_equal([tx_chain1])
# Post-fork-only and always-valid txns are accepted, pre-fork-only txn
# are rejected.
send_transaction_to_mempool(tx_post0)
send_transaction_to_mempool(tx_post1)
tx_chain2, _ = create_always_valid_chained_tx(last_chained_output)
send_transaction_to_mempool(tx_chain2)
assert_raises_rpc_error(-26, RPC_EXPECTED_ERROR,
node.sendrawtransaction, ToHex(tx_pre1))
check_mempool_equal([tx_chain1, tx_chain2, tx_post0, tx_post1])
# Mine the 2nd always-valid chained txn and a post-fork-only txn.
block(5557)
update_block(5557, [tx_chain1, tx_post0])
node.p2p.send_blocks_and_test([self.tip], node)
postforkblockid = node.getbestblockhash()
# The mempool contains the 3rd chained txn and a post-fork-only txn.
check_mempool_equal([tx_chain2, tx_post1])
# In the following we will testing block disconnections and reorgs.
# - tx_chain2 will always be retained in the mempool since it is always
# valid. Its continued presence shows that we are never simply
# clearing the entire mempool.
# - tx_post1 may be evicted from mempool if we land before the fork.
# - tx_post0 is in a block and if 'de-mined', it will either be evicted
# or end up in mempool depending if we land before/after the fork.
# - tx_pre0 is in a block and if 'de-mined', it will either be evicted
# or end up in mempool depending if we land after/before the fork.
# First we do a disconnection of the post-fork block, which is a
# normal disconnection that merely returns the block contents into
# the mempool -- nothing is lost.
node.invalidateblock(postforkblockid)
# In old mempool: tx_chain2, tx_post1
# Recovered from blocks: tx_chain1 and tx_post0.
# Lost from blocks: NONE
# Retained from old mempool: tx_chain2, tx_post1
# Evicted from old mempool: NONE
check_mempool_equal([tx_chain1, tx_chain2, tx_post0, tx_post1])
# Now, disconnect the fork block. This is a special disconnection
# that requires reprocessing the mempool due to change in rules.
node.invalidateblock(forkblockid)
# In old mempool: tx_chain1, tx_chain2, tx_post0, tx_post1
# Recovered from blocks: tx_chain0, tx_pre0
# Lost from blocks: NONE
# Retained from old mempool: tx_chain1, tx_chain2
# Evicted from old mempool: tx_post0, tx_post1
check_mempool_equal([tx_chain0, tx_chain1, tx_chain2, tx_pre0])
# Restore state
node.reconsiderblock(postforkblockid)
node.reconsiderblock(forkblockid)
send_transaction_to_mempool(tx_post1)
check_mempool_equal([tx_chain2, tx_post1])
# Test a reorg that crosses the fork.
# If such a reorg happens, most likely it will both start *and end*
# after the fork. We will test such a case here and make sure that
# post-fork-only transactions are not unnecessarily discarded from
# the mempool in such a reorg. Pre-fork-only transactions however can
# get lost.
# Set up a longer competing chain that doesn't confirm any of our txns.
# This starts after 5204, so it contains neither the forkblockid nor
# the postforkblockid from above.
tip(5204)
reorg_blocks = []
for i in range(3):
reorg_blocks.append(block(5900 + i))
# Perform the reorg
node.p2p.send_blocks_and_test(reorg_blocks, node)
# reorg finishes after the fork
assert_equal(node.getblockchaininfo()['mediantime'],
ACTIVATION_TIME + 2)
# In old mempool: tx_chain2, tx_post1
# Recovered from blocks: tx_chain0, tx_chain1, tx_post0
# Lost from blocks: tx_pre0
# Retained from old mempool: tx_chain2, tx_post1
# Evicted from old mempool: NONE
check_mempool_equal(
[tx_chain0, tx_chain1, tx_chain2, tx_post0, tx_post1])
def bootstrap_p2p(self, *, num_connections=1):
"""Add a P2P connection to the node.
Helper to connect and wait for version handshake."""
for _ in range(num_connections):
self.nodes[0].add_p2p_connection(P2PDataStore())
def run_test(self):
"""
. Test msg header
0. Send a bunch of large (4MB) messages of an unrecognized type. Check to see
that it isn't an effective DoS against the node.
1. Send an oversized (4MB+) message and check that we're disconnected.
2. Send a few messages with an incorrect data size in the header, ensure the
messages are ignored.
"""
self.test_magic_bytes()
self.test_checksum()
self.test_size()
self.test_command()
node = self.nodes[0]
self.node = node
node.add_p2p_connection(P2PDataStore())
conn2 = node.add_p2p_connection(P2PDataStore())
msg_limit = 4 * 1000 * 1000 # 4MB, per MAX_PROTOCOL_MESSAGE_LENGTH
valid_data_limit = msg_limit - 5 # Account for the 4-byte length prefix
#
# 0.
#
# Send as large a message as is valid, ensure we aren't disconnected but
# also can't exhaust resources.
#
msg_at_size = msg_unrecognized(str_data="b" * valid_data_limit)
assert len(msg_at_size.serialize()) == msg_limit
increase_allowed = 0.5
if [
s for s in os.environ.get("BITCOIN_CONFIG", "").split(" ")
if "--with-sanitizers" in s and "address" in s
]:
increase_allowed = 3.5
with node.assert_memory_usage_stable(
increase_allowed=increase_allowed):
self.log.info("Sending a bunch of large, junk messages to test "
"memory exhaustion. May take a bit...")
# Run a bunch of times to test for memory exhaustion.
for _ in range(80):
node.p2p.send_message(msg_at_size)
# Check that, even though the node is being hammered by nonsense from one
# connection, it can still service other peers in a timely way.
for _ in range(20):
conn2.sync_with_ping(timeout=2)
# Peer 1, despite serving up a bunch of nonsense, should still be connected.
self.log.info("Waiting for node to drop junk messages.")
node.p2p.sync_with_ping(timeout=120)
assert node.p2p.is_connected
#
# 1.
#
# Send an oversized message, ensure we're disconnected.
#
msg_over_size = msg_unrecognized(str_data="b" * (valid_data_limit + 1))
assert len(msg_over_size.serialize()) == (msg_limit + 1)
with node.assert_debug_log(
["Oversized message from peer=4, disconnecting"]):
# An unknown message type (or *any* message type) over
# MAX_PROTOCOL_MESSAGE_LENGTH should result in a disconnect.
node.p2p.send_message(msg_over_size)
node.p2p.wait_for_disconnect(timeout=4)
node.disconnect_p2ps()
conn = node.add_p2p_connection(P2PDataStore())
conn.wait_for_verack()
#
# 2.
#
# Send messages with an incorrect data size in the header.
#
actual_size = 100
msg = msg_unrecognized(str_data="b" * actual_size)
# TODO: handle larger-than cases. I haven't been able to pin down what behavior to expect.
for wrong_size in (2, 77, 78, 79):
self.log.info("Sending a message with incorrect size of {}".format(
wrong_size))
# Unmodified message should submit okay.
node.p2p.send_and_ping(msg)
# A message lying about its data size results in a disconnect when the incorrect
# data size is less than the actual size.
#
# TODO: why does behavior change at 78 bytes?
#
node.p2p.send_raw_message(
self._tweak_msg_data_size(msg, wrong_size))
# For some reason unknown to me, we sometimes have to push additional data to the
# peer in order for it to realize a disconnect.
try:
node.p2p.send_message(messages.msg_ping(nonce=123123))
except IOError:
pass
node.p2p.wait_for_disconnect(timeout=10)
node.disconnect_p2ps()
node.add_p2p_connection(P2PDataStore())
# Node is still up.
conn = node.add_p2p_connection(P2PDataStore())
conn.sync_with_ping()
def run_test(self):
# Add p2p connection to node0
node = self.nodes[0] # convenience reference to the node
node.add_p2p_connection(P2PDataStore())
best_block = node.getblock(node.getbestblockhash())
tip = int(node.getbestblockhash(), 16)
height = best_block["height"] + 1
block_time = best_block["time"] + 1
self.log.info("Create a new block with an anyone-can-spend coinbase")
height = 1
block = create_block(tip, create_coinbase(height), block_time)
block.solve()
# Save the coinbase for later
block1 = block
tip = block.sha256
node.p2p.send_blocks_and_test([block1], node, success=True)
self.log.info("Mature the block.")
node.generatetoaddress(100, node.get_deterministic_priv_key().address)
best_block = node.getblock(node.getbestblockhash())
tip = int(node.getbestblockhash(), 16)
height = best_block["height"] + 1
block_time = best_block["time"] + 1
# Use merkle-root malleability to generate an invalid block with
# same blockheader (CVE-2012-2459).
# Manufacture a block with 3 transactions (coinbase, spend of prior
# coinbase, spend of that spend). Duplicate the 3rd transaction to
# leave merkle root and blockheader unchanged but invalidate the block.
# For more information on merkle-root malleability see src/consensus/merkle.cpp.
self.log.info("Test merkle root malleability.")
block2 = create_block(tip, create_coinbase(height), block_time)
block_time += 1
# b'0x51' is OP_TRUE
tx1 = create_tx_with_script(block1.vtx[0],
0,
script_sig=b'\x51',
amount=50 * COIN)
tx2 = create_tx_with_script(tx1,
0,
script_sig=b'\x51',
amount=50 * COIN)
block2.vtx.extend([tx1, tx2])
block2.hashMerkleRoot = block2.calc_merkle_root()
block2.rehash()
block2.solve()
orig_hash = block2.sha256
block2_orig = copy.deepcopy(block2)
# Mutate block 2
block2.vtx.append(tx2)
assert_equal(block2.hashMerkleRoot, block2.calc_merkle_root())
assert_equal(orig_hash, block2.rehash())
assert block2_orig.vtx != block2.vtx
node.p2p.send_blocks_and_test([block2],
node,
success=False,
reject_reason='bad-txns-duplicate')
# Check transactions for duplicate inputs (CVE-2018-17144)
self.log.info("Test duplicate input block.")
block2_dup = copy.deepcopy(block2_orig)
block2_dup.vtx[2].vin.append(block2_dup.vtx[2].vin[0])
block2_dup.vtx[2].rehash()
block2_dup.hashMerkleRoot = block2_dup.calc_merkle_root()
block2_dup.rehash()
block2_dup.solve()
node.p2p.send_blocks_and_test(
[block2_dup],
node,
success=False,
reject_reason='bad-txns-inputs-duplicate')
self.log.info("Test very broken block.")
block3 = create_block(tip, create_coinbase(height), block_time)
block_time += 1
block3.vtx[0].vout[0].nValue = 100 * COIN # Too high!
block3.vtx[0].sha256 = None
block3.vtx[0].calc_sha256()
block3.hashMerkleRoot = block3.calc_merkle_root()
block3.rehash()
block3.solve()
node.p2p.send_blocks_and_test([block3],
node,
success=False,
reject_reason='bad-cb-amount')
# Complete testing of CVE-2012-2459 by sending the original block.
# It should be accepted even though it has the same hash as the mutated one.
self.log.info(
"Test accepting original block after rejecting its mutated version."
)
node.p2p.send_blocks_and_test([block2_orig],
node,
success=True,
timeout=5)
# Update tip info
height += 1
block_time += 1
tip = int(block2_orig.hash, 16)
# Complete testing of CVE-2018-17144, by checking for the inflation bug.
# Create a block that spends the output of a tx in a previous block.
block4 = create_block(tip, create_coinbase(height), block_time)
tx3 = create_tx_with_script(tx2,
0,
script_sig=b'\x51',
amount=50 * COIN)
# Duplicates input
tx3.vin.append(tx3.vin[0])
tx3.rehash()
block4.vtx.append(tx3)
block4.hashMerkleRoot = block4.calc_merkle_root()
block4.rehash()
block4.solve()
self.log.info("Test inflation by duplicating input")
node.p2p.send_blocks_and_test(
[block4],
node,
success=False,
reject_reason='bad-txns-inputs-duplicate')
def run_test(self):
node = self.nodes[0]
default_p2p = node.add_p2p_connection(P2PDataStore())
test_p2p = node.add_p2p_connection(TestP2PConn())
self.genesis_hash = int(node.getbestblockhash(), 16)
self.block_heights[self.genesis_hash] = 0
spendable_outputs = []
# save the current tip so it can be spent by a later block
def save_spendable_output():
spendable_outputs.append(self.tip)
# get an output that we previously marked as spendable
def get_spendable_output():
return PreviousSpendableOutput(spendable_outputs.pop(0).vtx[0], 0)
# move the tip back to a previous block
def tip(number):
self.tip = self.blocks[number]
# shorthand for functions
block = self.next_block
# Create a new block
block(0)
save_spendable_output()
default_p2p.send_blocks_and_test([self.tip], node)
# Now we need that block to mature so we can spend the coinbase.
maturity_blocks = []
for i in range(99):
block(5000 + i)
maturity_blocks.append(self.tip)
save_spendable_output()
# Get to one block of the May 15, 2018 HF activation
for i in range(6):
block(5100 + i)
maturity_blocks.append(self.tip)
# Send it all to the node at once.
default_p2p.send_blocks_and_test(maturity_blocks, node)
# collect spendable outputs now to avoid cluttering the code later on
out = []
for i in range(100):
out.append(get_spendable_output())
# Check that compact block also work for big blocks
# Wait for SENDCMPCT
def received_sendcmpct():
return (test_p2p.last_sendcmpct is not None)
wait_until(received_sendcmpct, timeout=30)
sendcmpct = msg_sendcmpct()
sendcmpct.version = 1
sendcmpct.announce = True
test_p2p.send_and_ping(sendcmpct)
# Exchange headers
def received_getheaders():
return (test_p2p.last_getheaders is not None)
wait_until(received_getheaders, timeout=30)
# Return the favor
test_p2p.send_message(test_p2p.last_getheaders)
# Wait for the header list
def received_headers():
return (test_p2p.last_headers is not None)
wait_until(received_headers, timeout=30)
# It's like we know about the same headers !
test_p2p.send_message(test_p2p.last_headers)
# Send a block
b1 = block(1, spend=out[0], block_size=ONE_MEGABYTE + 1)
default_p2p.send_blocks_and_test([self.tip], node)
# Checks the node to forward it via compact block
def received_block():
return (test_p2p.last_cmpctblock is not None)
wait_until(received_block, timeout=30)
# Was it our block ?
cmpctblk_header = test_p2p.last_cmpctblock.header_and_shortids.header
cmpctblk_header.calc_sha256()
assert cmpctblk_header.sha256 == b1.sha256
# Send a large block with numerous transactions.
test_p2p.clear_block_data()
b2 = block(2,
spend=out[1],
extra_txns=70000,
block_size=self.excessive_block_size - 1000)
default_p2p.send_blocks_and_test([self.tip], node)
# Checks the node forwards it via compact block
wait_until(received_block, timeout=30)
# Was it our block ?
cmpctblk_header = test_p2p.last_cmpctblock.header_and_shortids.header
cmpctblk_header.calc_sha256()
assert cmpctblk_header.sha256 == b2.sha256
# In order to avoid having to resend a ton of transactions, we invalidate
# b2, which will send all its transactions in the mempool. Note that this
# assumes reorgs will insert low-fee transactions back into the
# mempool.
node.invalidateblock(node.getbestblockhash())
# Let's send a compact block and see if the node accepts it.
# Let's modify b2 and use it so that we can reuse the mempool.
tx = b2.vtx[0]
tx.vout.append(CTxOut(0, CScript([random.randint(0, 256), OP_RETURN])))
tx.rehash()
b2.vtx[0] = tx
b2.hashMerkleRoot = b2.calc_merkle_root()
b2.solve()
# Now we create the compact block and send it
comp_block = HeaderAndShortIDs()
comp_block.initialize_from_block(b2)
test_p2p.send_and_ping(msg_cmpctblock(comp_block.to_p2p()))
# Check that compact block is received properly
assert int(node.getbestblockhash(), 16) == b2.sha256
def run_test(self):
node = self.nodes[0]
node.add_p2p_connection(P2PDataStore())
# Set the blocksize to 2MB as initial condition
node.setexcessiveblock(self.excessive_block_size)
self.genesis_hash = int(node.getbestblockhash(), 16)
self.block_heights[self.genesis_hash] = 0
spendable_outputs = []
# save the current tip so it can be spent by a later block
def save_spendable_output():
spendable_outputs.append(self.tip)
# get an output that we previously marked as spendable
def get_spendable_output():
return PreviousSpendableOutput(spendable_outputs.pop(0).vtx[0], 0)
# move the tip back to a previous block
def tip(number):
self.tip = self.blocks[number]
# adds transactions to the block and updates state
def update_block(block_number, new_transactions):
block = self.blocks[block_number]
self.add_transactions_to_block(block, new_transactions)
old_sha256 = block.sha256
make_conform_to_ctor(block)
block.hashMerkleRoot = block.calc_merkle_root()
block.solve()
# Update the internal state just like in next_block
self.tip = block
if block.sha256 != old_sha256:
self.block_heights[
block.sha256] = self.block_heights[old_sha256]
del self.block_heights[old_sha256]
self.blocks[block_number] = block
return block
# shorthand for functions
block = self.next_block
# Create a new block
block(0)
save_spendable_output()
node.p2p.send_blocks_and_test([self.tip], node)
# Now we need that block to mature so we can spend the coinbase.
maturity_blocks = []
for i in range(99):
block(5000 + i)
maturity_blocks.append(self.tip)
save_spendable_output()
node.p2p.send_blocks_and_test(maturity_blocks, node)
# collect spendable outputs now to avoid cluttering the code later on
out = []
for i in range(100):
out.append(get_spendable_output())
# Let's build some blocks and test them.
for i in range(16):
n = i + 1
block(n, spend=out[i], block_size=n * ONE_MEGABYTE)
node.p2p.send_blocks_and_test([self.tip], node)
# block of maximal size
block(17, spend=out[16], block_size=self.excessive_block_size)
node.p2p.send_blocks_and_test([self.tip], node)
# Reject oversized blocks with bad-blk-length error
block(18, spend=out[17], block_size=self.excessive_block_size + 1)
node.p2p.send_blocks_and_test([self.tip],
node,
success=False,
reject_reason='bad-blk-length')
# Rewind bad block.
tip(17)
# Submit a very large block via RPC
large_block = block(33,
spend=out[17],
block_size=self.excessive_block_size)
assert_equal(node.submitblock(ToHex(large_block)), None)
def run_test(self):
self.mine_chain()
node = self.nodes[0]
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=b2x(block.serialize())))
assert_equal(result_str_2,
node.submitblock(hexdata=b2x(block.serialize())))
self.log.info('getmininginfo')
mining_info = node.getmininginfo()
assert_equal(mining_info['blocks'], 200)
assert_equal(mining_info['chain'], 'regtest')
assert 'currentblocktx' not in mining_info
assert 'currentblockweight' 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)
# Mine a block to leave initial block download
node.generatetoaddress(1, node.get_deterministic_priv_key().address)
tmpl = node.getblocktemplate({'rules': ['segwit']})
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()
# round-trip the encoded bip34 block height commitment
assert_equal(CScriptNum.decode(coinbase_tx.vin[0].scriptSig),
next_height)
# round-trip negative and multi-byte CScriptNums to catch python regression
assert_equal(CScriptNum.decode(CScriptNum.encode(CScriptNum(1500))),
1500)
assert_equal(CScriptNum.decode(CScriptNum.encode(CScriptNum(-1500))),
-1500)
assert_equal(CScriptNum.decode(CScriptNum.encode(CScriptNum(-1))), -1)
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,
b2x(block.serialize()[:-15]))
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, b2x(bad_block.serialize()))
self.log.info("getblocktemplate: Test truncated final transaction")
assert_raises_rpc_error(
-22, "Block decode failed", node.getblocktemplate, {
'data': b2x(block.serialize()[:-1]),
'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': b2x(bad_block_sn),
'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=b2x(
super(CBlock, bad_block).serialize())))
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=b2x(block.serialize()))
assert chain_tip(block.hash) in node.getchaintips()
node.submitheader(hexdata=b2x(CBlockHeader(block).serialize())) # 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=b2x(CBlockHeader(bad_block_root).serialize()))
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=b2x(bad_block_root.serialize())),
'bad-txnmrklroot')
assert_equal(node.submitblock(hexdata=b2x(bad_block_root.serialize())),
'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=b2x(CBlockHeader(bad_block_root).serialize()))
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=b2x(bad_block_lock.serialize())),
'bad-txns-nonfinal')
assert_equal(node.submitblock(hexdata=b2x(bad_block_lock.serialize())),
'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=b2x(
CBlockHeader(bad_block2).serialize())))
# 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=b2x(CBlockHeader(bad_block_time).serialize()))
) # TODO Fix high-hash error
# Should ask for the block from a p2p node, if they announce the header as well:
node.add_p2p_connection(P2PDataStore())
node.p2p.wait_for_getheaders(timeout=5) # Drop the first getheaders
node.p2p.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
node.generatetoaddress(10, node.get_deterministic_priv_key().address)
assert_raises_rpc_error(-25, 'time-too-old', lambda: node.submitheader(
hexdata=b2x(CBlockHeader(bad_block_time).serialize()))
) # # TODO Fix high-hash error
assert_raises_rpc_error(
-25, 'bad-prevblk', lambda: node.submitheader(hexdata=b2x(
CBlockHeader(bad_block2).serialize())))
node.submitheader(hexdata=b2x(CBlockHeader(block).serialize()))
node.submitheader(
hexdata=b2x(CBlockHeader(bad_block_root).serialize()))
assert_equal(node.submitblock(hexdata=b2x(block.serialize())),
'duplicate') # valid
def run_test(self):
"""
. Test msg header
0. Send a bunch of large (4MB) messages of an unrecognized type. Check to see
that it isn't an effective DoS against the node.
1. Send an oversized (4MB+) message and check that we're disconnected.
2. Send a few messages with an incorrect data size in the header, ensure the
messages are ignored.
"""
self.test_magic_bytes()
self.test_checksum()
self.test_size()
self.test_msgtype()
self.test_large_inv()
node = self.nodes[0]
self.node = node
node.add_p2p_connection(P2PDataStore())
conn2 = node.add_p2p_connection(P2PDataStore())
msg_limit = 32 * 1024 * 1024 # 32MiB, per MAX_PROTOCOL_MESSAGE_LENGTH
valid_data_limit = msg_limit - 5 # Account for the 4-byte length prefix
#
# 0.
#
# Send as large a message as is valid, ensure we aren't disconnected but
# also can't exhaust resources.
#
msg_at_size = msg_unrecognized(str_data="b" * valid_data_limit)
assert len(msg_at_size.serialize()) == msg_limit
self.log.info(
"Sending a bunch of large, junk messages to test memory exhaustion. May take a bit..."
)
# Run a bunch of times to test for memory exhaustion.
# Upstream uses 80 iterations here, but its messages are 8x smaller.
# So with 10 iterations, we get the same amount of junk data sent
# to the node. If we use 80 here, Python uses an insane amount of
# memory by itself.
for _ in range(10):
node.p2p.send_message(msg_at_size)
# Check that, even though the node is being hammered by nonsense from one
# connection, it can still service other peers in a timely way.
for _ in range(20):
conn2.sync_with_ping(timeout=2)
# Peer 1, despite serving up a bunch of nonsense, should still be connected.
self.log.info("Waiting for node to drop junk messages.")
node.p2p.sync_with_ping(timeout=400)
assert node.p2p.is_connected
#
# 1.
#
# Send an oversized message, ensure we're disconnected.
#
# Under macOS this test is skipped due to an unexpected error code
# returned from the closing socket which python/asyncio does not
# yet know how to handle.
#
if sys.platform != 'darwin':
msg_over_size = msg_unrecognized(str_data="b" *
(valid_data_limit + 1))
assert len(msg_over_size.serialize()) == (msg_limit + 1)
# An unknown message type (or *any* message type) over
# MAX_PROTOCOL_MESSAGE_LENGTH should result in a disconnect.
node.p2p.send_message(msg_over_size)
node.p2p.wait_for_disconnect(timeout=4)
node.disconnect_p2ps()
conn = node.add_p2p_connection(P2PDataStore())
conn.wait_for_verack()
else:
self.log.info(
"Skipping test p2p_invalid_messages/1 (oversized message) under macOS"
)
#
# 2.
#
# Send messages with an incorrect data size in the header.
#
actual_size = 100
msg = msg_unrecognized(str_data="b" * actual_size)
# TODO: handle larger-than cases. I haven't been able to pin down what behavior to expect.
for wrong_size in (2, 77, 78, 79):
self.log.info("Sending a message with incorrect size of {}".format(
wrong_size))
# Unmodified message should submit okay.
node.p2p.send_and_ping(msg)
# A message lying about its data size results in a disconnect when the incorrect
# data size is less than the actual size.
#
# TODO: why does behavior change at 78 bytes?
#
node.p2p.send_raw_message(
self._tweak_msg_data_size(msg, wrong_size))
# For some reason unknown to me, we sometimes have to push additional data to the
# peer in order for it to realize a disconnect.
try:
node.p2p.send_message(messages.msg_ping(nonce=123123))
except IOError:
pass
node.p2p.wait_for_disconnect(timeout=10)
node.disconnect_p2ps()
node.add_p2p_connection(P2PDataStore())
# Node is still up.
conn = node.add_p2p_connection(P2PDataStore())
def run_test(self):
# Add p2p connection to node0
node = self.nodes[0] # convenience reference to the node
node.add_p2p_connection(P2PDataStore())
best_block = node.getblock(node.getbestblockhash())
tip = int(node.getbestblockhash(), 16)
height = best_block["height"] + 1
block_time = best_block["time"] + 1
self.log.info("Create a new block with an anyone-can-spend coinbase")
height = 1
block = create_block(tip, create_coinbase(height), block_time)
block.solve()
# Save the coinbase for later
block1 = block
tip = block.sha256
node.p2p.send_blocks_and_test([block1], node, success=True)
self.log.info("Mature the block.")
node.generate(100)
best_block = node.getblock(node.getbestblockhash())
tip = int(node.getbestblockhash(), 16)
height = best_block["height"] + 1
block_time = best_block["time"] + 1
# Use merkle-root malleability to generate an invalid block with
# same blockheader.
# Manufacture a block with 3 transactions (coinbase, spend of prior
# coinbase, spend of that spend). Duplicate the 3rd transaction to
# leave merkle root and blockheader unchanged but invalidate the block.
self.log.info("Test merkle root malleability.")
block2 = create_block(tip, create_coinbase(height), block_time)
block_time += 1
# b'0x51' is OP_TRUE
tx1 = create_tx_with_script(block1.vtx[0],
0,
script_sig=b'\x51',
amount=50 * COIN)
tx2 = create_tx_with_script(tx1,
0,
script_sig=b'\x51',
amount=50 * COIN)
block2.vtx.extend([tx1, tx2])
block2.hashMerkleRoot = block2.calc_merkle_root()
block2.rehash()
block2.solve()
orig_hash = block2.sha256
block2_orig = copy.deepcopy(block2)
# Mutate block 2
block2.vtx.append(tx2)
assert_equal(block2.hashMerkleRoot, block2.calc_merkle_root())
assert_equal(orig_hash, block2.rehash())
assert block2_orig.vtx != block2.vtx
node.p2p.send_blocks_and_test([block2],
node,
success=False,
reject_code=16,
reject_reason=b'bad-txns-duplicate')
# Check transactions for duplicate inputs
self.log.info("Test duplicate input block.")
block2_orig.vtx[2].vin.append(block2_orig.vtx[2].vin[0])
block2_orig.vtx[2].rehash()
block2_orig.hashMerkleRoot = block2_orig.calc_merkle_root()
block2_orig.rehash()
block2_orig.solve()
node.p2p.send_blocks_and_test(
[block2_orig],
node,
success=False,
reject_reason=b'bad-txns-inputs-duplicate')
self.log.info("Test very broken block.")
block3 = create_block(tip, create_coinbase(height), block_time)
block_time += 1
block3.vtx[0].vout[0].nValue = 100 * COIN # Too high!
block3.vtx[0].sha256 = None
block3.vtx[0].calc_sha256()
block3.hashMerkleRoot = block3.calc_merkle_root()
block3.rehash()
block3.solve()
node.p2p.send_blocks_and_test([block3],
node,
success=False,
reject_code=16,
reject_reason=b'bad-cb-amount')
def run_test(self):
self.nodes[0].add_p2p_connection(P2PDataStore())
self.log.info("Generate blocks in the past for coinbase outputs.")
long_past_time = int(
time.time()
) - 600 * 1000 # enough to build up to 1000 blocks 10 minutes apart without worrying about getting into the future
self.nodes[0].setmocktime(
long_past_time - 100
) # enough so that the generated blocks will still all be before long_past_time
self.coinbase_blocks = self.nodes[0].generate(
COINBASE_BLOCK_COUNT) # blocks generated for inputs
self.nodes[0].setmocktime(
0
) # set time back to present so yielded blocks aren't in the future as we advance last_block_time
self.tipheight = COINBASE_BLOCK_COUNT # height of the next block to build
self.last_block_time = long_past_time
self.tip = int(self.nodes[0].getbestblockhash(), 16)
self.nodeaddress = self.nodes[0].getnewaddress()
# Activation height is hardcoded
# We advance to block height five below BIP112 activation for the following tests
test_blocks = self.generate_blocks(CSV_ACTIVATION_HEIGHT - 5 -
COINBASE_BLOCK_COUNT)
self.send_blocks(test_blocks)
assert not softfork_active(self.nodes[0], 'csv')
# Inputs at height = 431
#
# Put inputs for all tests in the chain at height 431 (tip now = 430) (time increases by 600s per block)
# Note we reuse inputs for v1 and v2 txs so must test these separately
# 16 normal inputs
bip68inputs = []
for i in range(16):
bip68inputs.append(
send_generic_input_tx(self.nodes[0], self.coinbase_blocks,
self.nodeaddress))
# 2 sets of 16 inputs with 10 OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
bip112basicinputs = []
for j in range(2):
inputs = []
for i in range(16):
inputs.append(
send_generic_input_tx(self.nodes[0], self.coinbase_blocks,
self.nodeaddress))
bip112basicinputs.append(inputs)
# 2 sets of 16 varied inputs with (relative_lock_time) OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
bip112diverseinputs = []
for j in range(2):
inputs = []
for i in range(16):
inputs.append(
send_generic_input_tx(self.nodes[0], self.coinbase_blocks,
self.nodeaddress))
bip112diverseinputs.append(inputs)
# 1 special input with -1 OP_CSV OP_DROP (actually will be prepended to spending scriptSig)
bip112specialinput = send_generic_input_tx(self.nodes[0],
self.coinbase_blocks,
self.nodeaddress)
# 1 special input with (empty stack) OP_CSV (actually will be prepended to spending scriptSig)
bip112emptystackinput = send_generic_input_tx(self.nodes[0],
self.coinbase_blocks,
self.nodeaddress)
# 1 normal input
bip113input = send_generic_input_tx(self.nodes[0],
self.coinbase_blocks,
self.nodeaddress)
self.nodes[0].setmocktime(self.last_block_time + 600)
inputblockhash = self.nodes[0].generate(1)[
0] # 1 block generated for inputs to be in chain at height 431
self.nodes[0].setmocktime(0)
self.tip = int(inputblockhash, 16)
self.tipheight += 1
self.last_block_time += 600
assert_equal(len(self.nodes[0].getblock(inputblockhash, True)["tx"]),
TESTING_TX_COUNT + 1)
# 2 more version 4 blocks
test_blocks = self.generate_blocks(2)
self.send_blocks(test_blocks)
assert_equal(self.tipheight, CSV_ACTIVATION_HEIGHT - 2)
self.log.info(
"Height = {}, CSV not yet active (will activate for block {}, not {})"
.format(self.tipheight, CSV_ACTIVATION_HEIGHT,
CSV_ACTIVATION_HEIGHT - 1))
assert not softfork_active(self.nodes[0], 'csv')
# Test both version 1 and version 2 transactions for all tests
# BIP113 test transaction will be modified before each use to put in appropriate block time
bip113tx_v1 = create_transaction(self.nodes[0],
bip113input,
self.nodeaddress,
amount=Decimal("49.98"))
bip113tx_v1.vin[0].nSequence = 0xFFFFFFFE
bip113tx_v1.nVersion = 1
bip113tx_v2 = create_transaction(self.nodes[0],
bip113input,
self.nodeaddress,
amount=Decimal("49.98"))
bip113tx_v2.vin[0].nSequence = 0xFFFFFFFE
bip113tx_v2.nVersion = 2
# For BIP68 test all 16 relative sequence locktimes
bip68txs_v1 = create_bip68txs(self.nodes[0], bip68inputs, 1,
self.nodeaddress)
bip68txs_v2 = create_bip68txs(self.nodes[0], bip68inputs, 2,
self.nodeaddress)
# For BIP112 test:
# 16 relative sequence locktimes of 10 against 10 OP_CSV OP_DROP inputs
bip112txs_vary_nSequence_v1 = create_bip112txs(self.nodes[0],
bip112basicinputs[0],
False, 1,
self.nodeaddress)
bip112txs_vary_nSequence_v2 = create_bip112txs(self.nodes[0],
bip112basicinputs[0],
False, 2,
self.nodeaddress)
# 16 relative sequence locktimes of 9 against 10 OP_CSV OP_DROP inputs
bip112txs_vary_nSequence_9_v1 = create_bip112txs(
self.nodes[0], bip112basicinputs[1], False, 1, self.nodeaddress,
-1)
bip112txs_vary_nSequence_9_v2 = create_bip112txs(
self.nodes[0], bip112basicinputs[1], False, 2, self.nodeaddress,
-1)
# sequence lock time of 10 against 16 (relative_lock_time) OP_CSV OP_DROP inputs
bip112txs_vary_OP_CSV_v1 = create_bip112txs(self.nodes[0],
bip112diverseinputs[0],
True, 1, self.nodeaddress)
bip112txs_vary_OP_CSV_v2 = create_bip112txs(self.nodes[0],
bip112diverseinputs[0],
True, 2, self.nodeaddress)
# sequence lock time of 9 against 16 (relative_lock_time) OP_CSV OP_DROP inputs
bip112txs_vary_OP_CSV_9_v1 = create_bip112txs(self.nodes[0],
bip112diverseinputs[1],
True, 1,
self.nodeaddress, -1)
bip112txs_vary_OP_CSV_9_v2 = create_bip112txs(self.nodes[0],
bip112diverseinputs[1],
True, 2,
self.nodeaddress, -1)
# -1 OP_CSV OP_DROP input
bip112tx_special_v1 = create_bip112special(self.nodes[0],
bip112specialinput, 1,
self.nodeaddress)
bip112tx_special_v2 = create_bip112special(self.nodes[0],
bip112specialinput, 2,
self.nodeaddress)
# (empty stack) OP_CSV input
bip112tx_emptystack_v1 = create_bip112emptystack(
self.nodes[0], bip112emptystackinput, 1, self.nodeaddress)
bip112tx_emptystack_v2 = create_bip112emptystack(
self.nodes[0], bip112emptystackinput, 2, self.nodeaddress)
self.log.info("TESTING")
self.log.info("Pre-Soft Fork Tests. All txs should pass.")
self.log.info("Test version 1 txs")
success_txs = []
# BIP113 tx, -1 CSV tx and empty stack CSV tx should succeed
bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
success_txs.append(bip113signed1)
success_txs.append(bip112tx_special_v1)
success_txs.append(bip112tx_emptystack_v1)
# add BIP 68 txs
success_txs.extend(all_rlt_txs(bip68txs_v1))
# add BIP 112 with seq=10 txs
success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_v1))
success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_v1))
# try BIP 112 with seq=9 txs
success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_9_v1))
success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_9_v1))
self.send_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
self.log.info("Test version 2 txs")
success_txs = []
# BIP113 tx, -1 CSV tx and empty stack CSV tx should succeed
bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
success_txs.append(bip113signed2)
success_txs.append(bip112tx_special_v2)
success_txs.append(bip112tx_emptystack_v2)
# add BIP 68 txs
success_txs.extend(all_rlt_txs(bip68txs_v2))
# add BIP 112 with seq=10 txs
success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_v2))
success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_v2))
# try BIP 112 with seq=9 txs
success_txs.extend(all_rlt_txs(bip112txs_vary_nSequence_9_v2))
success_txs.extend(all_rlt_txs(bip112txs_vary_OP_CSV_9_v2))
self.send_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# 1 more version 4 block to get us to height 432 so the fork should now be active for the next block
assert not softfork_active(self.nodes[0], 'csv')
test_blocks = self.generate_blocks(1)
self.send_blocks(test_blocks)
assert softfork_active(self.nodes[0], 'csv')
self.log.info("Post-Soft Fork Tests.")
self.log.info("BIP 113 tests")
# BIP 113 tests should now fail regardless of version number if nLockTime isn't satisfied by new rules
bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 # = MTP of prior block (not <) but < time put on current block
bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
for bip113tx in [bip113signed1, bip113signed2]:
self.send_blocks([self.create_test_block([bip113tx])],
success=False,
reject_reason='bad-txns-nonfinal')
# BIP 113 tests should now pass if the locktime is < MTP
bip113tx_v1.nLockTime = self.last_block_time - 600 * 5 - 1 # < MTP of prior block
bip113signed1 = sign_transaction(self.nodes[0], bip113tx_v1)
bip113tx_v2.nLockTime = self.last_block_time - 600 * 5 - 1 # < MTP of prior block
bip113signed2 = sign_transaction(self.nodes[0], bip113tx_v2)
for bip113tx in [bip113signed1, bip113signed2]:
self.send_blocks([self.create_test_block([bip113tx])])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# Next block height = 437 after 4 blocks of random version
test_blocks = self.generate_blocks(4)
self.send_blocks(test_blocks)
self.log.info("BIP 68 tests")
self.log.info("Test version 1 txs - all should still pass")
success_txs = []
success_txs.extend(all_rlt_txs(bip68txs_v1))
self.send_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
self.log.info("Test version 2 txs")
# All txs with SEQUENCE_LOCKTIME_DISABLE_FLAG set pass
bip68success_txs = [tx['tx'] for tx in bip68txs_v2 if tx['sdf']]
self.send_blocks([self.create_test_block(bip68success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# All txs without flag fail as we are at delta height = 8 < 10 and delta time = 8 * 600 < 10 * 512
bip68timetxs = [
tx['tx'] for tx in bip68txs_v2 if not tx['sdf'] and tx['stf']
]
for tx in bip68timetxs:
self.send_blocks([self.create_test_block([tx])],
success=False,
reject_reason='bad-txns-nonfinal')
bip68heighttxs = [
tx['tx'] for tx in bip68txs_v2 if not tx['sdf'] and not tx['stf']
]
for tx in bip68heighttxs:
self.send_blocks([self.create_test_block([tx])],
success=False,
reject_reason='bad-txns-nonfinal')
# Advance one block to 438
test_blocks = self.generate_blocks(1)
self.send_blocks(test_blocks)
# Height txs should fail and time txs should now pass 9 * 600 > 10 * 512
bip68success_txs.extend(bip68timetxs)
self.send_blocks([self.create_test_block(bip68success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
for tx in bip68heighttxs:
self.send_blocks([self.create_test_block([tx])],
success=False,
reject_reason='bad-txns-nonfinal')
# Advance one block to 439
test_blocks = self.generate_blocks(1)
self.send_blocks(test_blocks)
# All BIP 68 txs should pass
bip68success_txs.extend(bip68heighttxs)
self.send_blocks([self.create_test_block(bip68success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
self.log.info("BIP 112 tests")
self.log.info("Test version 1 txs")
# -1 OP_CSV tx and (empty stack) OP_CSV tx should fail
self.send_blocks(
[self.create_test_block([bip112tx_special_v1])],
success=False,
reject_reason='non-mandatory-script-verify-flag (Negative locktime)'
)
self.send_blocks(
[self.create_test_block([bip112tx_emptystack_v1])],
success=False,
reject_reason=
'non-mandatory-script-verify-flag (Operation not valid with the current stack size)'
)
# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in argument to OP_CSV, version 1 txs should still pass
success_txs = [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v1 if tx['sdf']
]
success_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v1 if tx['sdf']
]
self.send_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# If SEQUENCE_LOCKTIME_DISABLE_FLAG is unset in argument to OP_CSV, version 1 txs should now fail
fail_txs = all_rlt_txs(bip112txs_vary_nSequence_v1)
fail_txs += all_rlt_txs(bip112txs_vary_nSequence_9_v1)
fail_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v1 if not tx['sdf']
]
fail_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v1 if not tx['sdf']
]
for tx in fail_txs:
self.send_blocks(
[self.create_test_block([tx])],
success=False,
reject_reason=
'non-mandatory-script-verify-flag (Locktime requirement not satisfied)'
)
self.log.info("Test version 2 txs")
# -1 OP_CSV tx and (empty stack) OP_CSV tx should fail
self.send_blocks(
[self.create_test_block([bip112tx_special_v2])],
success=False,
reject_reason='non-mandatory-script-verify-flag (Negative locktime)'
)
self.send_blocks(
[self.create_test_block([bip112tx_emptystack_v2])],
success=False,
reject_reason=
'non-mandatory-script-verify-flag (Operation not valid with the current stack size)'
)
# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in argument to OP_CSV, version 2 txs should pass (all sequence locks are met)
success_txs = [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v2 if tx['sdf']
]
success_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v2 if tx['sdf']
]
self.send_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# SEQUENCE_LOCKTIME_DISABLE_FLAG is unset in argument to OP_CSV for all remaining txs ##
# All txs with nSequence 9 should fail either due to earlier mismatch or failing the CSV check
fail_txs = all_rlt_txs(bip112txs_vary_nSequence_9_v2)
fail_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_9_v2 if not tx['sdf']
]
for tx in fail_txs:
self.send_blocks(
[self.create_test_block([tx])],
success=False,
reject_reason=
'non-mandatory-script-verify-flag (Locktime requirement not satisfied)'
)
# If SEQUENCE_LOCKTIME_DISABLE_FLAG is set in nSequence, tx should fail
fail_txs = [
tx['tx'] for tx in bip112txs_vary_nSequence_v2 if tx['sdf']
]
for tx in fail_txs:
self.send_blocks(
[self.create_test_block([tx])],
success=False,
reject_reason=
'non-mandatory-script-verify-flag (Locktime requirement not satisfied)'
)
# If sequencelock types mismatch, tx should fail
fail_txs = [
tx['tx'] for tx in bip112txs_vary_nSequence_v2
if not tx['sdf'] and tx['stf']
]
fail_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v2
if not tx['sdf'] and tx['stf']
]
for tx in fail_txs:
self.send_blocks(
[self.create_test_block([tx])],
success=False,
reject_reason=
'non-mandatory-script-verify-flag (Locktime requirement not satisfied)'
)
# Remaining txs should pass, just test masking works properly
success_txs = [
tx['tx'] for tx in bip112txs_vary_nSequence_v2
if not tx['sdf'] and not tx['stf']
]
success_txs += [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v2
if not tx['sdf'] and not tx['stf']
]
self.send_blocks([self.create_test_block(success_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
# Additional test, of checking that comparison of two time types works properly
time_txs = []
for tx in [
tx['tx'] for tx in bip112txs_vary_OP_CSV_v2
if not tx['sdf'] and tx['stf']
]:
tx.vin[0].nSequence = BASE_RELATIVE_LOCKTIME | SEQ_TYPE_FLAG
signtx = sign_transaction(self.nodes[0], tx)
time_txs.append(signtx)
self.send_blocks([self.create_test_block(time_txs)])
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
def run_test(self):
node = self.nodes[0]
node.add_p2p_connection(P2PDataStore())
# Allocate as many UTXOs as are needed
num_utxos = sum(
len(test_case['sig_hash_types']) for test_case in TESTCASES
if isinstance(test_case, dict))
value = int(SUBSIDY * 1_000_000)
fee = 10_000
max_utxo_value = (value - fee) // num_utxos
private_keys = []
public_keys = []
spendable_outputs = []
executed_scripts = []
utxo_idx = 0
# Prepare UTXOs for the tests below
for test_case in TESTCASES:
if test_case == 'ENABLE_REPLAY_PROTECTION':
continue
for _ in test_case['sig_hash_types']:
private_key = ECKey()
private_key.generate()
private_keys.append(private_key)
public_key = private_key.get_pubkey()
public_keys.append(public_key)
utxo_value = max_utxo_value - utxo_idx * 100 # deduct 100*i coins for unique amounts
if test_case.get('opcodes', False):
opcodes = test_case['opcodes']
redeem_script = CScript(
opcodes + [public_key.get_bytes(), OP_CHECKSIG])
executed_scripts.append(redeem_script)
utxo_script = CScript(
[OP_HASH160,
hash160(redeem_script), OP_EQUAL])
elif test_case.get('is_p2pk', False):
utxo_script = CScript(
[public_key.get_bytes(), OP_CHECKSIG])
executed_scripts.append(utxo_script)
else:
utxo_script = CScript([
OP_DUP, OP_HASH160,
hash160(public_key.get_bytes()), OP_EQUALVERIFY,
OP_CHECKSIG
])
executed_scripts.append(utxo_script)
spendable_outputs.append(CTxOut(utxo_value, utxo_script))
utxo_idx += 1
anyonecanspend_address = node.decodescript('51')['p2sh']
burn_address = node.decodescript('00')['p2sh']
p2sh_script = CScript([OP_HASH160, bytes(20), OP_EQUAL])
node.generatetoaddress(1, anyonecanspend_address)
node.generatetoaddress(100, burn_address)
# Build and send fan-out transaction creating all the UTXOs
block_hash = node.getblockhash(1)
coin = int(node.getblock(block_hash)['tx'][0], 16)
tx_fan_out = CTransaction()
tx_fan_out.vin.append(CTxIn(COutPoint(coin, 1), CScript([b'\x51'])))
tx_fan_out.vout = spendable_outputs
tx_fan_out.rehash()
node.p2p.send_txs_and_test([tx_fan_out], node)
utxo_idx = 0
key_idx = 0
for test_case in TESTCASES:
if test_case == 'ENABLE_REPLAY_PROTECTION':
node.setmocktime(ACTIVATION_TIME)
node.generatetoaddress(11, burn_address)
continue
# Build tx for this test, will broadcast later
tx = CTransaction()
num_inputs = len(test_case['sig_hash_types'])
spent_outputs = spendable_outputs[:num_inputs]
del spendable_outputs[:num_inputs]
assert len(spent_outputs) == num_inputs
total_input_amount = sum(output.nValue for output in spent_outputs)
max_output_amount = (total_input_amount -
fee) // test_case['outputs']
for i in range(test_case['outputs']):
output_amount = max_output_amount - i * 77
output_script = CScript(
[OP_HASH160, i.to_bytes(20, 'big'), OP_EQUAL])
tx.vout.append(CTxOut(output_amount, output_script))
for _ in test_case['sig_hash_types']:
tx.vin.append(
CTxIn(COutPoint(tx_fan_out.txid, utxo_idx), CScript()))
utxo_idx += 1
# Keep unsigned tx for signrawtransactionwithkey below
unsigned_tx = tx.serialize().hex()
private_keys_wif = []
sign_inputs = []
# Make list of inputs for signrawtransactionwithkey
for i, spent_output in enumerate(spent_outputs):
sign_inputs.append({
'txid':
tx_fan_out.txid_hex,
'vout':
key_idx + i,
'amount':
Decimal(spent_output.nValue) / COIN,
'scriptPubKey':
spent_output.scriptPubKey.hex(),
})
for i, sig_hash_type in enumerate(test_case['sig_hash_types']):
# Compute sighash for this input; we sign it manually using sign_ecdsa/sign_schnorr
# and then broadcast the complete transaction
sighash = SignatureHashLotus(
tx_to=tx,
spent_utxos=spent_outputs,
sig_hash_type=sig_hash_type,
input_index=i,
executed_script_hash=hash256(executed_scripts[key_idx]),
codeseparator_pos=test_case.get('codesep', 0xffff_ffff),
)
if test_case.get('schnorr', False):
signature = private_keys[key_idx].sign_schnorr(sighash)
else:
signature = private_keys[key_idx].sign_ecdsa(sighash)
signature += bytes(
[test_case.get('suffix', sig_hash_type & 0xff)])
# Build correct scriptSig
if test_case.get('opcodes'):
tx.vin[i].scriptSig = CScript(
[signature, executed_scripts[key_idx]])
elif test_case.get('is_p2pk'):
tx.vin[i].scriptSig = CScript([signature])
else:
tx.vin[i].scriptSig = CScript(
[signature, public_keys[key_idx].get_bytes()])
sig_hash_type_str = self.get_sig_hash_type_str(sig_hash_type)
if sig_hash_type_str is not None and 'opcodes' not in test_case and 'error' not in test_case:
# If we're a simple output type (P2PKH or P2KH) and aren't supposed to fail,
# we sign using signrawtransactionwithkey and verify the transaction signed
# the expected sighash. We won't broadcast it though.
# Note: signrawtransactionwithkey will not sign using replay-protection.
private_key_wif = bytes_to_wif(
private_keys[key_idx].get_bytes())
raw_tx_signed = self.nodes[0].signrawtransactionwithkey(
unsigned_tx, [private_key_wif], sign_inputs,
sig_hash_type_str)['hex']
# Extract signature from signed
signed_tx = CTransaction()
signed_tx.deserialize(
io.BytesIO(bytes.fromhex(raw_tx_signed)))
sig = list(CScript(signed_tx.vin[i].scriptSig))[0]
pubkey = private_keys[key_idx].get_pubkey()
sighash = SignatureHashLotus(
tx_to=tx,
spent_utxos=spent_outputs,
sig_hash_type=sig_hash_type & 0xff,
input_index=i,
executed_script_hash=hash256(
executed_scripts[key_idx]),
)
# Verify sig signs the above sighash and has the expected sighash type
assert pubkey.verify_ecdsa(sig[:-1], sighash)
assert sig[-1] == sig_hash_type & 0xff
key_idx += 1
# Broadcast transaction and check success/failure
tx.rehash()
if 'error' not in test_case:
node.p2p.send_txs_and_test([tx], node)
else:
node.p2p.send_txs_and_test([tx],
node,
success=False,
reject_reason=test_case['error'])
def run_test(self):
node = self.nodes[0]
node.add_p2p_connection(P2PDataStore())
node.setmocktime(REPLAY_PROTECTION_START_TIME)
self.genesis_hash = int(node.getbestblockhash(), 16)
self.block_heights[self.genesis_hash] = 0
spendable_outputs = []
# save the current tip so it can be spent by a later block
def save_spendable_output():
spendable_outputs.append(self.tip)
# get an output that we previously marked as spendable
def get_spendable_output():
return PreviousSpendableOutput(spendable_outputs.pop(0).vtx[0], 0)
# move the tip back to a previous block
def tip(number):
self.tip = self.blocks[number]
# adds transactions to the block and updates state
def update_block(block_number, new_transactions):
block = self.blocks[block_number]
block.vtx.extend(new_transactions)
old_sha256 = block.sha256
make_conform_to_ctor(block)
block.hashMerkleRoot = block.calc_merkle_root()
block.solve()
# Update the internal state just like in next_block
self.tip = block
if block.sha256 != old_sha256:
self.block_heights[
block.sha256] = self.block_heights[old_sha256]
del self.block_heights[old_sha256]
self.blocks[block_number] = block
return block
# shorthand
block = self.next_block
# Create a new block
block(0)
save_spendable_output()
node.p2p.send_blocks_and_test([self.tip], node)
# Now we need that block to mature so we can spend the coinbase.
maturity_blocks = []
for i in range(99):
block(5000 + i)
maturity_blocks.append(self.tip)
save_spendable_output()
node.p2p.send_blocks_and_test(maturity_blocks, node)
# collect spendable outputs now to avoid cluttering the code later on
out = []
for i in range(100):
out.append(get_spendable_output())
# Generate a key pair to test P2SH sigops count
private_key = CECKey()
private_key.set_secretbytes(b"replayprotection")
public_key = private_key.get_pubkey()
# This is a little handier to use than the version in blocktools.py
def create_fund_and_spend_tx(spend, forkvalue=0):
# Fund transaction
script = CScript([public_key, OP_CHECKSIG])
txfund = create_transaction(spend.tx, spend.n, b'',
50 * COIN - 1000, script)
txfund.rehash()
# Spend transaction
txspend = CTransaction()
txspend.vout.append(CTxOut(50 * COIN - 2000, CScript([OP_TRUE])))
txspend.vin.append(CTxIn(COutPoint(txfund.sha256, 0), b''))
# Sign the transaction
sighashtype = (forkvalue << 8) | SIGHASH_ALL | SIGHASH_FORKID
sighash = SignatureHashForkId(script, txspend, 0, sighashtype,
50 * COIN - 1000)
sig = private_key.sign(sighash) + \
bytes(bytearray([SIGHASH_ALL | SIGHASH_FORKID]))
txspend.vin[0].scriptSig = CScript([sig])
txspend.rehash()
return [txfund, txspend]
def send_transaction_to_mempool(tx):
tx_id = node.sendrawtransaction(ToHex(tx))
assert tx_id in set(node.getrawmempool())
return tx_id
# Before the fork, no replay protection required to get in the mempool.
txns = create_fund_and_spend_tx(out[0])
send_transaction_to_mempool(txns[0])
send_transaction_to_mempool(txns[1])
# And txns get mined in a block properly.
block(1)
update_block(1, txns)
node.p2p.send_blocks_and_test([self.tip], node)
# Replay protected transactions are rejected.
replay_txns = create_fund_and_spend_tx(out[1], 0xffdead)
send_transaction_to_mempool(replay_txns[0])
assert_raises_rpc_error(-26, RPC_INVALID_SIGNATURE_ERROR,
node.sendrawtransaction, ToHex(replay_txns[1]))
# And block containing them are rejected as well.
block(2)
update_block(2, replay_txns)
node.p2p.send_blocks_and_test([self.tip],
node,
success=False,
reject_reason='blk-bad-inputs')
# Rewind bad block
tip(1)
# Create a block that would activate the replay protection.
bfork = block(5555)
bfork.nTime = REPLAY_PROTECTION_START_TIME - 1
update_block(5555, [])
node.p2p.send_blocks_and_test([self.tip], node)
activation_blocks = []
for i in range(5):
block(5100 + i)
activation_blocks.append(self.tip)
node.p2p.send_blocks_and_test(activation_blocks, node)
# Check we are just before the activation time
assert_equal(
node.getblockheader(node.getbestblockhash())['mediantime'],
REPLAY_PROTECTION_START_TIME - 1)
# We are just before the fork, replay protected txns still are rejected
assert_raises_rpc_error(-26, RPC_INVALID_SIGNATURE_ERROR,
node.sendrawtransaction, ToHex(replay_txns[1]))
block(3)
update_block(3, replay_txns)
node.p2p.send_blocks_and_test([self.tip],
node,
success=False,
reject_reason='blk-bad-inputs')
# Rewind bad block
tip(5104)
# Send some non replay protected txns in the mempool to check
# they get cleaned at activation.
txns = create_fund_and_spend_tx(out[2])
send_transaction_to_mempool(txns[0])
tx_id = send_transaction_to_mempool(txns[1])
# Activate the replay protection
block(5556)
node.p2p.send_blocks_and_test([self.tip], node)
# Check we just activated the replay protection
assert_equal(
node.getblockheader(node.getbestblockhash())['mediantime'],
REPLAY_PROTECTION_START_TIME)
# Non replay protected transactions are not valid anymore,
# so they should be removed from the mempool.
assert tx_id not in set(node.getrawmempool())
# Good old transactions are now invalid.
send_transaction_to_mempool(txns[0])
assert_raises_rpc_error(-26, RPC_INVALID_SIGNATURE_ERROR,
node.sendrawtransaction, ToHex(txns[1]))
# They also cannot be mined
block(4)
update_block(4, txns)
node.p2p.send_blocks_and_test([self.tip],
node,
success=False,
reject_reason='blk-bad-inputs')
# Rewind bad block
tip(5556)
# The replay protected transaction is now valid
replay_tx0_id = send_transaction_to_mempool(replay_txns[0])
replay_tx1_id = send_transaction_to_mempool(replay_txns[1])
# Make sure the transaction are ready to be mined.
tmpl = node.getblocktemplate()
found_id0 = False
found_id1 = False
for txn in tmpl['transactions']:
txid = txn['txid']
if txid == replay_tx0_id:
found_id0 = True
elif txid == replay_tx1_id:
found_id1 = True
assert found_id0 and found_id1
# And the mempool is still in good shape.
assert replay_tx0_id in set(node.getrawmempool())
assert replay_tx1_id in set(node.getrawmempool())
# They also can also be mined
block(5)
update_block(5, replay_txns)
node.p2p.send_blocks_and_test([self.tip], node)
# Ok, now we check if a reorg work properly across the activation.
postforkblockid = node.getbestblockhash()
node.invalidateblock(postforkblockid)
assert replay_tx0_id in set(node.getrawmempool())
assert replay_tx1_id in set(node.getrawmempool())
# Deactivating replay protection.
forkblockid = node.getbestblockhash()
node.invalidateblock(forkblockid)
# The funding tx is not evicted from the mempool, since it's valid in
# both sides of the fork
assert replay_tx0_id in set(node.getrawmempool())
assert replay_tx1_id not in set(node.getrawmempool())
# Check that we also do it properly on deeper reorg.
node.reconsiderblock(forkblockid)
node.reconsiderblock(postforkblockid)
node.invalidateblock(forkblockid)
assert replay_tx0_id in set(node.getrawmempool())
assert replay_tx1_id not in set(node.getrawmempool())
def run_test(self):
node = self.nodes[0]
self.pynode = P2PDataStore()
self.connection = NodeConn('127.0.0.1', p2p_port(0), node, self.pynode)
self.pynode.add_connection(self.connection)
NetworkThread().start()
self.pynode.wait_for_verack()
# Get out of IBD
node.generate(1)
tip = self.getbestblock(node)
logging.info("Create some blocks with OP_1 coinbase for spending.")
blocks = []
for _ in range(20):
tip = self.build_block(tip)
blocks.append(tip)
self.pynode.send_blocks_and_test(blocks, node, success=True)
self.spendable_outputs = deque(block.vtx[0] for block in blocks)
logging.info("Mature the blocks.")
node.generate(100)
tip = self.getbestblock(node)
# To make compact and fast-to-verify transactions, we'll use
# CHECKDATASIG over and over with the same data.
# (Using the same stuff over and over again means we get to hit the
# node's signature cache and don't need to make new signatures every
# time.)
cds_message = b''
# r=1 and s=1 ecdsa, the minimum values.
cds_signature = bytes.fromhex('3006020101020101')
# Recovered pubkey
cds_pubkey = bytes.fromhex(
'03089b476b570d66fad5a20ae6188ebbaf793a4c2a228c65f3d79ee8111d56c932'
)
def minefunding2(n):
""" Mine a block with a bunch of outputs that are very dense
sigchecks when spent (2 sigchecks each); return the inputs that can
be used to spend. """
cds_scriptpubkey = CScript([
cds_message, cds_pubkey, OP_3DUP, OP_CHECKDATASIGVERIFY,
OP_CHECKDATASIGVERIFY
])
# The scriptsig is carefully padded to have size 26, which is the
# shortest allowed for 2 sigchecks for mempool admission.
# The resulting inputs have size 67 bytes, 33.5 bytes/sigcheck.
cds_scriptsig = CScript([b'x' * 16, cds_signature])
assert_equal(len(cds_scriptsig), 26)
logging.debug(
"Gen {} with locking script {} unlocking script {} .".format(
n, cds_scriptpubkey.hex(), cds_scriptsig.hex()))
tx = self.spendable_outputs.popleft()
usable_inputs = []
txes = []
for i in range(n):
tx = create_transaction(tx, cds_scriptpubkey,
bytes([OP_TRUE]) if i == 0 else b"")
txes.append(tx)
usable_inputs.append(
CTxIn(COutPoint(tx.sha256, 1), cds_scriptsig))
newtip = self.build_block(tip, txes)
self.pynode.send_blocks_and_test([newtip], node, timeout=10)
return usable_inputs, newtip
logging.info("Funding special coins that have high sigchecks")
# mine 5000 funded outputs (10000 sigchecks)
# will be used pre-activation and post-activation
usable_inputs, tip = minefunding2(5000)
# assemble them into 50 txes with 100 inputs each (200 sigchecks)
submittxes_1 = []
while len(usable_inputs) >= 100:
tx = CTransaction()
tx.vin = [usable_inputs.pop() for _ in range(100)]
tx.vout = [CTxOut(0, CScript([OP_RETURN]))]
tx.rehash()
submittxes_1.append(tx)
# mine 5000 funded outputs (10000 sigchecks)
# will be used post-activation
usable_inputs, tip = minefunding2(5000)
# assemble them into 50 txes with 100 inputs each (200 sigchecks)
submittxes_2 = []
while len(usable_inputs) >= 100:
tx = CTransaction()
tx.vin = [usable_inputs.pop() for _ in range(100)]
tx.vout = [CTxOut(0, CScript([OP_RETURN]))]
tx.rehash()
submittxes_2.append(tx)
# Check high sigcheck transactions
logging.info("Create transaction that have high sigchecks")
fundings = []
def make_spend(sigcheckcount):
# Add a funding tx to fundings, and return a tx spending that using
# scriptsig.
logging.debug("Gen tx with {} sigchecks.".format(sigcheckcount))
def get_script_with_sigcheck(count):
return CScript([cds_message, cds_pubkey] +
(count - 1) * [OP_3DUP, OP_CHECKDATASIGVERIFY] +
[OP_CHECKDATASIG])
# get funds locked with OP_1
sourcetx = self.spendable_outputs.popleft()
# make funding that forwards to scriptpubkey
last_sigcheck_count = ((sigcheckcount - 1) % 30) + 1
fundtx = create_transaction(
sourcetx, get_script_with_sigcheck(last_sigcheck_count))
fill_sigcheck_script = get_script_with_sigcheck(30)
remaining_sigcheck = sigcheckcount
while remaining_sigcheck > 30:
fundtx.vout[0].nValue -= 1000
fundtx.vout.append(CTxOut(100, bytes(fill_sigcheck_script)))
remaining_sigcheck -= 30
fundtx.rehash()
fundings.append(fundtx)
# make the spending
scriptsig = CScript([cds_signature])
tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(fundtx.sha256, 1), scriptsig))
input_index = 2
remaining_sigcheck = sigcheckcount
while remaining_sigcheck > 30:
tx.vin.append(
CTxIn(COutPoint(fundtx.sha256, input_index), scriptsig))
remaining_sigcheck -= 30
input_index += 1
tx.vout.append(CTxOut(0, CScript([OP_RETURN])))
pad_tx(tx)
tx.rehash()
return tx
# Create transactions with many sigchecks.
good_tx = make_spend(MAX_TX_SIGCHECK)
bad_tx = make_spend(MAX_TX_SIGCHECK + 1)
tip = self.build_block(tip, fundings)
self.pynode.send_blocks_and_test([tip], node)
# Both tx are accepted before the activation.
pre_activation_sigcheck_block = self.build_block(
tip, [good_tx, bad_tx])
self.pynode.send_blocks_and_test([pre_activation_sigcheck_block], node)
node.invalidateblock(pre_activation_sigcheck_block.hash)
# after block is invalidated these tx are put back into the mempool. Test uses them later so evict.
waitFor(10, lambda: node.getmempoolinfo()["size"] == 2)
node.evicttransaction(good_tx.hash)
node.evicttransaction(bad_tx.hash)
# Activation tests
logging.info("Approach to just before upgrade activation")
# Move our clock to the uprade time so we will accept such
# future-timestamped blocks.
node.setmocktime(SIGCHECKS_ACTIVATION_TIME + 10)
# Mine six blocks with timestamp starting at
# SIGCHECKS_ACTIVATION_TIME-1
blocks = []
for i in range(-1, 5):
tip = self.build_block(tip, nTime=SIGCHECKS_ACTIVATION_TIME + i)
blocks.append(tip)
self.pynode.send_blocks_and_test(blocks, node, timeout=TIMEOUT)
assert_equal(node.getblockchaininfo()['mediantime'],
SIGCHECKS_ACTIVATION_TIME - 1)
logging.info(
"The next block will activate, but the activation block itself must follow old rules"
)
# Send the 50 txes and get the node to mine as many as possible (it should do all)
# The node is happy mining and validating a 10000 sigcheck block before
# activation.
self.pynode.send_txs_and_test(submittxes_1, node, timeout=TIMEOUT)
[blockhash] = node.generate(1)
assert_equal(set(node.getblock(blockhash, 1)["tx"][1:]),
{t.hash
for t in submittxes_1})
# We have activated, but let's invalidate that.
assert_equal(node.getblockchaininfo()['mediantime'],
SIGCHECKS_ACTIVATION_TIME)
node.invalidateblock(blockhash)
# Try again manually and invalidate that too
goodblock = self.build_block(tip, submittxes_1)
self.pynode.send_blocks_and_test([goodblock], node, timeout=TIMEOUT)
node.invalidateblock(goodblock.hash)
# All transactions should be back in mempool: validation is very slow in debug build
waitFor(
60, lambda: set(node.getrawmempool()) ==
{t.hash
for t in submittxes_1})
logging.info("Mine the activation block itself")
tip = self.build_block(tip)
self.pynode.send_blocks_and_test([tip], node, timeout=TIMEOUT)
logging.info("We have activated!")
assert_equal(node.getblockchaininfo()['mediantime'],
SIGCHECKS_ACTIVATION_TIME)
# All transactions get re-evaluated to count sigchecks, so wait for them
waitFor(
60, lambda: set(node.getrawmempool()) ==
{t.hash
for t in submittxes_1})
logging.info(
"Try a block with a transaction going over the limit (limit: {})".
format(MAX_TX_SIGCHECK))
bad_tx_block = self.build_block(tip, [bad_tx])
check_for_ban_on_rejected_block(
self.pynode,
node,
bad_tx_block,
reject_reason=BLOCK_SIGCHECKS_BAD_TX_SIGCHECKS)
logging.info(
"Try a block with a transaction just under the limit (limit: {})".
format(MAX_TX_SIGCHECK))
good_tx_block = self.build_block(tip, [good_tx])
self.pynode.send_blocks_and_test([good_tx_block],
node,
timeout=TIMEOUT)
node.invalidateblock(good_tx_block.hash)
# save this tip for later
# ~ upgrade_block = tip
# Transactions still in pool:
waitFor(
60, lambda: set(node.getrawmempool()) ==
{t.hash
for t in submittxes_1})
logging.info(
"Try sending 10000-sigcheck blocks after activation (limit: {})".
format(MAXBLOCKSIZE // BLOCK_MAXBYTES_MAXSIGCHECKS_RATIO))
# Send block with same txes we just tried before activation
badblock = self.build_block(tip, submittxes_1)
check_for_ban_on_rejected_block(
self.pynode,
node,
badblock,
reject_reason="Invalid block due to bad-blk-sigchecks",
expect_ban=True)
logging.info(
"There are too many sigchecks in mempool to mine in a single block. Make sure the node won't mine invalid blocks. Num tx: %s"
% str(node.getmempoolinfo()))
blk = node.generate(1)
tip = self.getbestblock(node)
# only 39 txes got mined.
assert_equal(len(node.getrawmempool()), 11)
logging.info(
"Try sending 10000-sigcheck block with fresh transactions after activation (limit: {})"
.format(MAXBLOCKSIZE // BLOCK_MAXBYTES_MAXSIGCHECKS_RATIO))
# Note: in the following tests we'll be bumping timestamp in order
# to bypass any kind of 'bad block' cache on the node, and get a
# fresh evaluation each time.
# Try another block with 10000 sigchecks but all fresh transactions
badblock = self.build_block(tip,
submittxes_2,
nTime=SIGCHECKS_ACTIVATION_TIME + 5)
check_for_ban_on_rejected_block(
self.pynode,
node,
badblock,
reject_reason=BLOCK_SIGCHECKS_BAD_BLOCK_SIGCHECKS)
# Send the same txes again with different block hash. Currently we don't
# cache valid transactions in invalid blocks so nothing changes.
badblock = self.build_block(tip,
submittxes_2,
nTime=SIGCHECKS_ACTIVATION_TIME + 6)
check_for_ban_on_rejected_block(
self.pynode,
node,
badblock,
reject_reason=BLOCK_SIGCHECKS_BAD_BLOCK_SIGCHECKS)
# Put all the txes in mempool, in order to get them cached:
self.pynode.send_txs_and_test(submittxes_2, node, timeout=TIMEOUT)
# Send them again, the node still doesn't like it. But the log
# error message has now changed because the txes failed from cache.
badblock = self.build_block(tip,
submittxes_2,
nTime=SIGCHECKS_ACTIVATION_TIME + 7)
check_for_ban_on_rejected_block(
self.pynode,
node,
badblock,
reject_reason=BLOCK_SIGCHECKS_BAD_BLOCK_SIGCHECKS)
logging.info(
"Try sending 8000-sigcheck block after activation (limit: {})".
format(MAXBLOCKSIZE // BLOCK_MAXBYTES_MAXSIGCHECKS_RATIO))
badblock = self.build_block(tip,
submittxes_2[:40],
nTime=SIGCHECKS_ACTIVATION_TIME + 5)
check_for_ban_on_rejected_block(
self.pynode,
node,
badblock,
reject_reason=BLOCK_SIGCHECKS_BAD_BLOCK_SIGCHECKS)
# redundant, but just to mirror the following test...
node.set("consensus.maxBlockSigChecks=%d" % MAX_BLOCK_SIGCHECKS)
logging.info(
"Bump the excessiveblocksize limit by 1 byte, and send another block with same txes (new sigchecks limit: {})"
.format((MAXBLOCKSIZE + 1) // BLOCK_MAXBYTES_MAXSIGCHECKS_RATIO))
node.set("consensus.maxBlockSigChecks=%d" % (MAX_BLOCK_SIGCHECKS + 1))
tip = self.build_block(tip,
submittxes_2[:40],
nTime=SIGCHECKS_ACTIVATION_TIME + 6)
# It should succeed now since limit should be 8000.
self.pynode.send_blocks_and_test([tip], node, timeout=TIMEOUT)