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-rwxr-xr-xtest/functional/feature_block.py99
-rw-r--r--test/functional/test_framework/blocktools.py28
2 files changed, 78 insertions, 49 deletions
diff --git a/test/functional/feature_block.py b/test/functional/feature_block.py
index fdb608d457..12a52935ef 100755
--- a/test/functional/feature_block.py
+++ b/test/functional/feature_block.py
@@ -74,6 +74,10 @@ class CBrokenBlock(CBlock):
def normal_serialize(self):
return super().serialize()
+
+DUPLICATE_COINBASE_SCRIPT_SIG = b'\x01\x78' # Valid for block at height 120
+
+
class FullBlockTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
@@ -96,6 +100,13 @@ class FullBlockTest(BitcoinTestFramework):
self.spendable_outputs = []
# Create a new block
+ b_dup_cb = self.next_block('dup_cb')
+ b_dup_cb.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG
+ b_dup_cb.vtx[0].rehash()
+ duplicate_tx = b_dup_cb.vtx[0]
+ b_dup_cb = self.update_block('dup_cb', [])
+ self.send_blocks([b_dup_cb])
+
b0 = self.next_block(0)
self.save_spendable_output()
self.send_blocks([b0])
@@ -758,7 +769,7 @@ class FullBlockTest(BitcoinTestFramework):
# Test a few invalid tx types
#
- # -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17)
+ # -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 ()
# \-> ??? (17)
#
@@ -784,14 +795,14 @@ class FullBlockTest(BitcoinTestFramework):
# reset to good chain
self.move_tip(57)
- b60 = self.next_block(60, spend=out[17])
+ b60 = self.next_block(60)
self.send_blocks([b60], True)
self.save_spendable_output()
- # Test BIP30
+ # Test BIP30 (reject duplicate)
#
- # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17)
- # \-> b61 (18)
+ # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 ()
+ # \-> b61 ()
#
# Blocks are not allowed to contain a transaction whose id matches that of an earlier,
# not-fully-spent transaction in the same chain. To test, make identical coinbases;
@@ -799,20 +810,44 @@ class FullBlockTest(BitcoinTestFramework):
#
self.log.info("Reject a block with a transaction with a duplicate hash of a previous transaction (BIP30)")
self.move_tip(60)
- b61 = self.next_block(61, spend=out[18])
- b61.vtx[0].vin[0].scriptSig = b60.vtx[0].vin[0].scriptSig # Equalize the coinbases
+ b61 = self.next_block(61)
+ b61.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG
b61.vtx[0].rehash()
b61 = self.update_block(61, [])
- assert_equal(b60.vtx[0].serialize(), b61.vtx[0].serialize())
+ assert_equal(duplicate_tx.serialize(), b61.vtx[0].serialize())
self.send_blocks([b61], success=False, reject_reason='bad-txns-BIP30', reconnect=True)
+ # Test BIP30 (allow duplicate if spent)
+ #
+ # -> b57 (16) -> b60 ()
+ # \-> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()
+ #
+ self.move_tip(57)
+ b_spend_dup_cb = self.next_block('spend_dup_cb')
+ tx = CTransaction()
+ tx.vin.append(CTxIn(COutPoint(duplicate_tx.sha256, 0)))
+ tx.vout.append(CTxOut(0, CScript([OP_TRUE])))
+ self.sign_tx(tx, duplicate_tx)
+ tx.rehash()
+ b_spend_dup_cb = self.update_block('spend_dup_cb', [tx])
+
+ b_dup_2 = self.next_block('dup_2')
+ b_dup_2.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG
+ b_dup_2.vtx[0].rehash()
+ b_dup_2 = self.update_block('dup_2', [])
+ assert_equal(duplicate_tx.serialize(), b_dup_2.vtx[0].serialize())
+ assert_equal(self.nodes[0].gettxout(txid=duplicate_tx.hash, n=0)['confirmations'], 119)
+ self.send_blocks([b_spend_dup_cb, b_dup_2], success=True)
+ # The duplicate has less confirmations
+ assert_equal(self.nodes[0].gettxout(txid=duplicate_tx.hash, n=0)['confirmations'], 1)
+
# Test tx.isFinal is properly rejected (not an exhaustive tx.isFinal test, that should be in data-driven transaction tests)
#
- # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17)
- # \-> b62 (18)
+ # -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()
+ # \-> b62 (18)
#
self.log.info("Reject a block with a transaction with a nonfinal locktime")
- self.move_tip(60)
+ self.move_tip('dup_2')
b62 = self.next_block(62)
tx = CTransaction()
tx.nLockTime = 0xffffffff # this locktime is non-final
@@ -825,11 +860,11 @@ class FullBlockTest(BitcoinTestFramework):
# Test a non-final coinbase is also rejected
#
- # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17)
- # \-> b63 (-)
+ # -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()
+ # \-> b63 (-)
#
self.log.info("Reject a block with a coinbase transaction with a nonfinal locktime")
- self.move_tip(60)
+ self.move_tip('dup_2')
b63 = self.next_block(63)
b63.vtx[0].nLockTime = 0xffffffff
b63.vtx[0].vin[0].nSequence = 0xDEADBEEF
@@ -845,14 +880,14 @@ class FullBlockTest(BitcoinTestFramework):
# What matters is that the receiving node should not reject the bloated block, and then reject the canonical
# block on the basis that it's the same as an already-rejected block (which would be a consensus failure.)
#
- # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18)
- # \
- # b64a (18)
+ # -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 () -> b64 (18)
+ # \
+ # b64a (18)
# b64a is a bloated block (non-canonical varint)
# b64 is a good block (same as b64 but w/ canonical varint)
#
self.log.info("Accept a valid block even if a bloated version of the block has previously been sent")
- self.move_tip(60)
+ self.move_tip('dup_2')
regular_block = self.next_block("64a", spend=out[18])
# make it a "broken_block," with non-canonical serialization
@@ -878,7 +913,7 @@ class FullBlockTest(BitcoinTestFramework):
node.disconnect_p2ps()
self.reconnect_p2p()
- self.move_tip(60)
+ self.move_tip('dup_2')
b64 = CBlock(b64a)
b64.vtx = copy.deepcopy(b64a.vtx)
assert_equal(b64.hash, b64a.hash)
@@ -890,7 +925,7 @@ class FullBlockTest(BitcoinTestFramework):
# Spend an output created in the block itself
#
- # -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19)
+ # -> b_dup_2 () -> b64 (18) -> b65 (19)
#
self.log.info("Accept a block with a transaction spending an output created in the same block")
self.move_tip(64)
@@ -903,8 +938,8 @@ class FullBlockTest(BitcoinTestFramework):
# Attempt to spend an output created later in the same block
#
- # -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19)
- # \-> b66 (20)
+ # -> b64 (18) -> b65 (19)
+ # \-> b66 (20)
self.log.info("Reject a block with a transaction spending an output created later in the same block")
self.move_tip(65)
b66 = self.next_block(66)
@@ -915,8 +950,8 @@ class FullBlockTest(BitcoinTestFramework):
# Attempt to double-spend a transaction created in a block
#
- # -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19)
- # \-> b67 (20)
+ # -> b64 (18) -> b65 (19)
+ # \-> b67 (20)
#
#
self.log.info("Reject a block with a transaction double spending a transaction created in the same block")
@@ -930,8 +965,8 @@ class FullBlockTest(BitcoinTestFramework):
# More tests of block subsidy
#
- # -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) -> b69 (20)
- # \-> b68 (20)
+ # -> b64 (18) -> b65 (19) -> b69 (20)
+ # \-> b68 (20)
#
# b68 - coinbase with an extra 10 satoshis,
# creates a tx that has 9 satoshis from out[20] go to fees
@@ -957,8 +992,8 @@ class FullBlockTest(BitcoinTestFramework):
# Test spending the outpoint of a non-existent transaction
#
- # -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) -> b69 (20)
- # \-> b70 (21)
+ # -> b65 (19) -> b69 (20)
+ # \-> b70 (21)
#
self.log.info("Reject a block containing a transaction spending from a non-existent input")
self.move_tip(69)
@@ -973,8 +1008,8 @@ class FullBlockTest(BitcoinTestFramework):
# Test accepting an invalid block which has the same hash as a valid one (via merkle tree tricks)
#
- # -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) -> b69 (20) -> b72 (21)
- # \-> b71 (21)
+ # -> b65 (19) -> b69 (20) -> b72 (21)
+ # \-> b71 (21)
#
# b72 is a good block.
# b71 is a copy of 72, but re-adds one of its transactions. However, it has the same hash as b72.
@@ -1002,8 +1037,8 @@ class FullBlockTest(BitcoinTestFramework):
# Test some invalid scripts and MAX_BLOCK_SIGOPS
#
- # -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) -> b69 (20) -> b72 (21)
- # \-> b** (22)
+ # -> b69 (20) -> b72 (21)
+ # \-> b** (22)
#
# b73 - tx with excessive sigops that are placed after an excessively large script element.
diff --git a/test/functional/test_framework/blocktools.py b/test/functional/test_framework/blocktools.py
index 7ac044d0d0..d741b00ba0 100644
--- a/test/functional/test_framework/blocktools.py
+++ b/test/functional/test_framework/blocktools.py
@@ -22,13 +22,14 @@ from .messages import (
ToHex,
hash256,
hex_str_to_bytes,
- ser_string,
ser_uint256,
sha256,
uint256_from_str,
)
from .script import (
CScript,
+ CScriptNum,
+ CScriptOp,
OP_0,
OP_1,
OP_CHECKMULTISIG,
@@ -89,20 +90,14 @@ def add_witness_commitment(block, nonce=0):
block.hashMerkleRoot = block.calc_merkle_root()
block.rehash()
-def serialize_script_num(value):
- r = bytearray(0)
- if value == 0:
- return r
- neg = value < 0
- absvalue = -value if neg else value
- while (absvalue):
- r.append(int(absvalue & 0xff))
- absvalue >>= 8
- if r[-1] & 0x80:
- r.append(0x80 if neg else 0)
- elif neg:
- r[-1] |= 0x80
- return r
+
+def script_BIP34_coinbase_height(height):
+ if height <= 16:
+ res = CScriptOp.encode_op_n(height)
+ # Append dummy to increase scriptSig size above 2 (see bad-cb-length consensus rule)
+ return CScript([res, OP_1])
+ return CScript([CScriptNum(height)])
+
def create_coinbase(height, pubkey=None):
"""Create a coinbase transaction, assuming no miner fees.
@@ -110,8 +105,7 @@ def create_coinbase(height, pubkey=None):
If pubkey is passed in, the coinbase output will be a P2PK output;
otherwise an anyone-can-spend output."""
coinbase = CTransaction()
- coinbase.vin.append(CTxIn(COutPoint(0, 0xffffffff),
- ser_string(serialize_script_num(height)), 0xffffffff))
+ coinbase.vin.append(CTxIn(COutPoint(0, 0xffffffff), script_BIP34_coinbase_height(height), 0xffffffff))
coinbaseoutput = CTxOut()
coinbaseoutput.nValue = 50 * COIN
halvings = int(height / 150) # regtest
generated by cgit v1.2.3 (git 2.26.2) at 2024-09-15 01:42:01 +0000