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diff --git a/test/functional/abc-p2p-fullblocktest.py b/test/functional/abc-p2p-fullblocktest.py
--- a/test/functional/abc-p2p-fullblocktest.py
+++ b/test/functional/abc-p2p-fullblocktest.py
@@ -20,6 +20,7 @@
from test_framework.script import *
from test_framework.cdefs import (ONE_MEGABYTE, LEGACY_MAX_BLOCK_SIZE,
MAX_BLOCK_SIGOPS_PER_MB, MAX_TX_SIGOPS_COUNT)
+from collections import deque
class PreviousSpendableOutput():
@@ -70,12 +71,9 @@
self.num_nodes = 1
self.setup_clean_chain = True
self.block_heights = {}
- self.coinbase_key = CECKey()
- self.coinbase_key.set_secretbytes(b"fatstacks")
- self.coinbase_pubkey = self.coinbase_key.get_pubkey()
self.tip = None
self.blocks = {}
- self.excessive_block_size = 64 * ONE_MEGABYTE
+ self.excessive_block_size = 100 * ONE_MEGABYTE
self.extra_args = [['-norelaypriority',
'-whitelist=127.0.0.1',
'-limitancestorcount=9999',
@@ -109,31 +107,7 @@
tx = create_transaction(spend_tx, n, b"", value, script)
return tx
- # sign a transaction, using the key we know about
- # this signs input 0 in tx, which is assumed to be spending output n in
- # spend_tx
- def sign_tx(self, tx, spend_tx, n):
- scriptPubKey = bytearray(spend_tx.vout[n].scriptPubKey)
- if (scriptPubKey[0] == OP_TRUE): # an anyone-can-spend
- tx.vin[0].scriptSig = CScript()
- return
- sighash = SignatureHashForkId(
- spend_tx.vout[n].scriptPubKey, tx, 0, SIGHASH_ALL | SIGHASH_FORKID, spend_tx.vout[n].nValue)
- tx.vin[0].scriptSig = CScript(
- [self.coinbase_key.sign(sighash) + bytes(bytearray([SIGHASH_ALL | SIGHASH_FORKID]))])
-
- def create_and_sign_transaction(self, spend_tx, n, value, script=CScript([OP_TRUE])):
- tx = self.create_tx(spend_tx, n, value, script)
- self.sign_tx(tx, spend_tx, n)
- tx.rehash()
- return tx
-
- def next_block(self, number, spend=None, additional_coinbase_value=0, script=None, extra_sigops=0, block_size=0, solve=True):
- """
- Create a block on top of self.tip, and advance self.tip to point to the new block
- if spend is specified, then 1 satoshi will be spent from that to an anyone-can-spend
- output, and rest will go to fees.
- """
+ def next_block(self, number, spend=None, script=CScript([OP_TRUE]), block_size=0, extra_sigops=0):
if self.tip == None:
base_block_hash = self.genesis_hash
block_time = int(time.time()) + 1
@@ -142,70 +116,90 @@
block_time = self.tip.nTime + 1
# First create the coinbase
height = self.block_heights[base_block_hash] + 1
- coinbase = create_coinbase(height, self.coinbase_pubkey)
- coinbase.vout[0].nValue += additional_coinbase_value
- if (spend != None):
- coinbase.vout[0].nValue += spend.tx.vout[
- spend.n].nValue - 1 # all but one satoshi to fees
+ coinbase = create_coinbase(height)
coinbase.rehash()
- block = create_block(base_block_hash, coinbase, block_time)
- spendable_output = None
- if (spend != None):
+ if spend == None:
+ # We need to have something to spend to fill the block.
+ assert_equal(block_size, 0)
+ block = create_block(base_block_hash, coinbase, block_time)
+ else:
+ # all but one satoshi to fees
+ coinbase.vout[0].nValue += spend.tx.vout[spend.n].nValue - 1
+ coinbase.rehash()
+ block = create_block(base_block_hash, coinbase, block_time)
+ # spend 1 satoshi
tx = CTransaction()
- # no signature yet
- tx.vin.append(
- CTxIn(COutPoint(spend.tx.sha256, spend.n), b"", 0xffffffff))
- # We put some random data into the first transaction of the chain
- # to randomize ids
- tx.vout.append(
- CTxOut(0, CScript([random.randint(0, 255), OP_DROP, OP_TRUE])))
- if script == None:
- tx.vout.append(CTxOut(1, CScript([OP_TRUE])))
- else:
+ tx.vin.append(CTxIn(COutPoint(spend.tx.sha256, spend.n)))
+ # Make sure we have plenty engough to spend going forward.
+ spendable_outputs = deque([])
+
+ def add_spendable_outputs(tx):
+ for i in range(8):
+ tx.vout.append(CTxOut(0, CScript([OP_TRUE])))
+ spendable_outputs.append(PreviousSpendableOutput(tx, i))
+ add_spendable_outputs(tx)
+
+ # Make it the same format as transaction added for padding and save the size.
+ # It's missing the padding output, so we add a constant to account for it.
+ tx.rehash()
+ base_tx_size = len(tx.serialize()) + 18
+
+ # If a specific script is required, add it.
+ if script != None:
tx.vout.append(CTxOut(1, script))
- spendable_output = PreviousSpendableOutput(tx, 0)
- # Now sign it if necessary
- scriptSig = b""
- scriptPubKey = bytearray(spend.tx.vout[spend.n].scriptPubKey)
- if (scriptPubKey[0] == OP_TRUE): # looks like an anyone-can-spend
- scriptSig = CScript([OP_TRUE])
- else:
- # We have to actually sign it
- sighash = SignatureHashForkId(
- spend.tx.vout[spend.n].scriptPubKey, tx, 0, SIGHASH_ALL | SIGHASH_FORKID, spend.tx.vout[spend.n].nValue)
- scriptSig = CScript(
- [self.coinbase_key.sign(sighash) + bytes(bytearray([SIGHASH_ALL | SIGHASH_FORKID]))])
- tx.vin[0].scriptSig = scriptSig
- # Now add the transaction to the block
+ # Put some random data into the first transaction of the chain to randomize ids.
+ tx.vout.append(
+ CTxOut(0, CScript([random.randint(0, 256), OP_RETURN])))
+
+ # Add the transaction to the block
self.add_transactions_to_block(block, [tx])
- block.hashMerkleRoot = block.calc_merkle_root()
- if spendable_output != None and block_size > 0:
- while len(block.serialize()) < block_size:
+
+ # If we have a block size requirement, just fill
+ # the block until we get there
+ current_block_size = len(block.serialize())
+ while current_block_size < block_size:
+ # We will add a new transaction. That means the size of
+ # the field enumerating how many transaction go in the block
+ # may change.
+ current_block_size -= len(ser_compact_size(len(block.vtx)))
+ current_block_size += len(ser_compact_size(len(block.vtx) + 1))
+
+ # Create the new transaction
tx = CTransaction()
- script_length = block_size - len(block.serialize()) - 79
+ # Spend from one of the spendable outputs
+ spend = spendable_outputs.popleft()
+ tx.vin.append(CTxIn(COutPoint(spend.tx.sha256, spend.n)))
+ # Add spendable outputs
+ add_spendable_outputs(tx)
+
+ # Add padding to fill the block.
+ script_length = block_size - current_block_size - base_tx_size
if script_length > 510000:
script_length = 500000
- tx_sigops = min(
- extra_sigops, script_length, MAX_TX_SIGOPS_COUNT)
+ tx_sigops = min(extra_sigops, script_length,
+ MAX_TX_SIGOPS_COUNT)
extra_sigops -= tx_sigops
script_pad_len = script_length - tx_sigops
script_output = CScript(
[b'\x00' * script_pad_len] + [OP_CHECKSIG] * tx_sigops)
- tx.vout.append(CTxOut(0, CScript([OP_TRUE])))
tx.vout.append(CTxOut(0, script_output))
- tx.vin.append(
- CTxIn(COutPoint(spendable_output.tx.sha256, spendable_output.n)))
- spendable_output = PreviousSpendableOutput(tx, 0)
+
+ # Add the tx to the list of transactions to be included
+ # in the block.
self.add_transactions_to_block(block, [tx])
+ current_block_size += len(tx.serialize())
+
+ # Now that we added a bunch of transaction, we need to recompute
+ # the merkle root.
block.hashMerkleRoot = block.calc_merkle_root()
- # Make sure the math above worked out to produce the correct block size
- # (the math will fail if there are too many transactions in the block)
+
+ # Check that the block size is what's expected
+ if block_size > 0:
assert_equal(len(block.serialize()), block_size)
- # Make sure all the requested sigops have been included
- assert_equal(extra_sigops, 0)
- if solve:
- block.solve()
+
+ # Do PoW, which is cheap on regnet
+ block.solve()
self.tip = block
self.block_heights[block.sha256] = height
assert number not in self.blocks
@@ -296,15 +290,13 @@
# Accept many sigops
lots_of_checksigs = CScript(
- [OP_CHECKSIG] * (MAX_BLOCK_SIGOPS_PER_MB - 1))
- block(
- 19, spend=out[17], script=lots_of_checksigs, block_size=ONE_MEGABYTE)
+ [OP_CHECKSIG] * MAX_BLOCK_SIGOPS_PER_MB)
+ block(19, spend=out[17], script=lots_of_checksigs,
+ block_size=ONE_MEGABYTE)
yield accepted()
- too_many_blk_checksigs = CScript(
- [OP_CHECKSIG] * MAX_BLOCK_SIGOPS_PER_MB)
- block(
- 20, spend=out[18], script=too_many_blk_checksigs, block_size=ONE_MEGABYTE)
+ block(20, spend=out[18], script=lots_of_checksigs,
+ block_size=ONE_MEGABYTE, extra_sigops=1)
yield rejected(RejectResult(16, b'bad-blk-sigops'))
# Rewind bad block
@@ -372,16 +364,20 @@
# Rewind bad block
tip(26)
+ # Generate a key pair to test P2SH sigops count
+ private_key = CECKey()
+ private_key.set_secretbytes(b"fatstacks")
+ public_key = private_key.get_pubkey()
+
# P2SH
# Build the redeem script, hash it, use hash to create the p2sh script
- redeem_script = CScript([self.coinbase_pubkey] + [
- OP_2DUP, OP_CHECKSIGVERIFY] * 5 + [OP_CHECKSIG])
+ redeem_script = CScript(
+ [public_key] + [OP_2DUP, OP_CHECKSIGVERIFY] * 5 + [OP_CHECKSIG])
redeem_script_hash = hash160(redeem_script)
p2sh_script = CScript([OP_HASH160, redeem_script_hash, OP_EQUAL])
# Create a p2sh transaction
- p2sh_tx = self.create_and_sign_transaction(
- out[22].tx, out[22].n, 1, p2sh_script)
+ p2sh_tx = self.create_tx(out[22].tx, out[22].n, 1, p2sh_script)
# Add the transaction to the block
block(30)
@@ -398,8 +394,8 @@
# Sign the transaction using the redeem script
sighash = SignatureHashForkId(
redeem_script, spent_p2sh_tx, 0, SIGHASH_ALL | SIGHASH_FORKID, p2sh_tx.vout[0].nValue)
- sig = self.coinbase_key.sign(sighash) + bytes(
- bytearray([SIGHASH_ALL | SIGHASH_FORKID]))
+ sig = private_key.sign(sighash) + \
+ bytes(bytearray([SIGHASH_ALL | SIGHASH_FORKID]))
spent_p2sh_tx.vin[0].scriptSig = CScript([sig, redeem_script])
spent_p2sh_tx.rehash()
return spent_p2sh_tx

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