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[qa] p2p segwit tests

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mininode now supports witness transactions/blocks, blocktools
has a helper for adding witness commitments to blocks, and script
has a function to calculate hashes for signature under sigversion
1, used by segwit.

Py3 conversion by Marco Falke

Test to make sure upgraded nodes don't ask for non-wit blocks by
Gregory Sanders.
This commit is contained in:
Suhas Daftuar
2016-04-08 21:02:24 -04:00
committed by Pieter Wuille
parent 4f7ff00497
commit 330b0f31ee
7 changed files with 2037 additions and 30 deletions
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212
qa/rpc-tests/test_framework/mininode.py
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@@ -28,7 +28,7 @@ import asyncore
import time
import sys
import random
from binascii import hexlify, unhexlify
from .util import hex_str_to_bytes, bytes_to_hex_str
from io import BytesIO
from codecs import encode
import hashlib
@@ -46,6 +46,11 @@ MAX_BLOCK_SIZE = 1000000
COIN = 100000000 # 1 btc in satoshis
NODE_NETWORK = (1 << 0)
NODE_GETUTXO = (1 << 1)
NODE_BLOOM = (1 << 2)
NODE_WITNESS = (1 << 3)
# Keep our own socket map for asyncore, so that we can track disconnects
# ourselves (to workaround an issue with closing an asyncore socket when
# using select)
@@ -63,6 +68,8 @@ mininode_lock = RLock()
def sha256(s):
return hashlib.new('sha256', s).digest()
def ripemd160(s):
return hashlib.new('ripemd160', s).digest()
def hash256(s):
return sha256(sha256(s))
@@ -133,7 +140,10 @@ def deser_vector(f, c):
return r
def ser_vector(l):
# ser_function_name: Allow for an alternate serialization function on the
# entries in the vector (we use this for serializing the vector of transactions
# for a witness block).
def ser_vector(l, ser_function_name=None):
r = b""
if len(l) < 253:
r = struct.pack("B", len(l))
@@ -144,7 +154,10 @@ def ser_vector(l):
else:
r = struct.pack("<BQ", 255, len(l))
for i in l:
r += i.serialize()
if ser_function_name:
r += getattr(i, ser_function_name)()
else:
r += i.serialize()
return r
@@ -239,12 +252,12 @@ def ser_int_vector(l):
# Deserialize from a hex string representation (eg from RPC)
def FromHex(obj, hex_string):
obj.deserialize(BytesIO(unhexlify(hex_string.encode('ascii'))))
obj.deserialize(BytesIO(hex_str_to_bytes(hex_string)))
return obj
# Convert a binary-serializable object to hex (eg for submission via RPC)
def ToHex(obj):
return hexlify(obj.serialize()).decode('ascii')
return bytes_to_hex_str(obj.serialize())
# Objects that map to bitcoind objects, which can be serialized/deserialized
@@ -273,12 +286,16 @@ class CAddress(object):
return "CAddress(nServices=%i ip=%s port=%i)" % (self.nServices,
self.ip, self.port)
MSG_WITNESS_FLAG = 1<<30
class CInv(object):
typemap = {
0: "Error",
1: "TX",
2: "Block"}
2: "Block",
1|MSG_WITNESS_FLAG: "WitnessTx",
2|MSG_WITNESS_FLAG : "WitnessBlock"
}
def __init__(self, t=0, h=0):
self.type = t
@@ -362,7 +379,7 @@ class CTxIn(object):
def __repr__(self):
return "CTxIn(prevout=%s scriptSig=%s nSequence=%i)" \
% (repr(self.prevout), hexlify(self.scriptSig),
% (repr(self.prevout), bytes_to_hex_str(self.scriptSig),
self.nSequence)
@@ -384,7 +401,67 @@ class CTxOut(object):
def __repr__(self):
return "CTxOut(nValue=%i.%08i scriptPubKey=%s)" \
% (self.nValue // COIN, self.nValue % COIN,
hexlify(self.scriptPubKey))
bytes_to_hex_str(self.scriptPubKey))
class CScriptWitness(object):
def __init__(self):
# stack is a vector of strings
self.stack = []
def __repr__(self):
return "CScriptWitness(%s)" % \
(",".join([bytes_to_hex_str(x) for x in self.stack]))
def is_null(self):
if self.stack:
return False
return True
class CTxinWitness(object):
def __init__(self):
self.scriptWitness = CScriptWitness()
def deserialize(self, f):
self.scriptWitness.stack = deser_string_vector(f)
def serialize(self):
return ser_string_vector(self.scriptWitness.stack)
def __repr__(self):
return repr(self.scriptWitness)
def is_null(self):
return self.scriptWitness.is_null()
class CTxWitness(object):
def __init__(self):
self.vtxinwit = []
def deserialize(self, f):
for i in range(len(self.vtxinwit)):
self.vtxinwit[i].deserialize(f)
def serialize(self):
r = b""
# This is different than the usual vector serialization --
# we omit the length of the vector, which is required to be
# the same length as the transaction's vin vector.
for x in self.vtxinwit:
r += x.serialize()
return r
def __repr__(self):
return "CTxWitness(%s)" % \
(';'.join([repr(x) for x in self.vtxinwit]))
def is_null(self):
for x in self.vtxinwit:
if not x.is_null():
return False
return True
class CTransaction(object):
@@ -393,6 +470,7 @@ class CTransaction(object):
self.nVersion = 1
self.vin = []
self.vout = []
self.wit = CTxWitness()
self.nLockTime = 0
self.sha256 = None
self.hash = None
@@ -401,18 +479,31 @@ class CTransaction(object):
self.vin = copy.deepcopy(tx.vin)
self.vout = copy.deepcopy(tx.vout)
self.nLockTime = tx.nLockTime
self.sha256 = None
self.hash = None
self.sha256 = tx.sha256
self.hash = tx.hash
self.wit = copy.deepcopy(tx.wit)
def deserialize(self, f):
self.nVersion = struct.unpack("<i", f.read(4))[0]
self.vin = deser_vector(f, CTxIn)
self.vout = deser_vector(f, CTxOut)
flags = 0
if len(self.vin) == 0:
flags = struct.unpack("<B", f.read(1))[0]
# Not sure why flags can't be zero, but this
# matches the implementation in bitcoind
if (flags != 0):
self.vin = deser_vector(f, CTxIn)
self.vout = deser_vector(f, CTxOut)
else:
self.vout = deser_vector(f, CTxOut)
if flags != 0:
self.wit.vtxinwit = [CTxinWitness()]*len(self.vin)
self.wit.deserialize(f)
self.nLockTime = struct.unpack("<I", f.read(4))[0]
self.sha256 = None
self.hash = None
def serialize(self):
def serialize_without_witness(self):
r = b""
r += struct.pack("<i", self.nVersion)
r += ser_vector(self.vin)
@@ -420,13 +511,48 @@ class CTransaction(object):
r += struct.pack("<I", self.nLockTime)
return r
# Only serialize with witness when explicitly called for
def serialize_with_witness(self):
flags = 0
if not self.wit.is_null():
flags |= 1
r = b""
r += struct.pack("<i", self.nVersion)
if flags:
dummy = []
r += ser_vector(dummy)
r += struct.pack("<B", flags)
r += ser_vector(self.vin)
r += ser_vector(self.vout)
if flags & 1:
if (len(self.wit.vtxinwit) != len(self.vin)):
# vtxinwit must have the same length as vin
self.wit.vtxinwit = self.wit.vtxinwit[:len(self.vin)]
for i in range(len(self.wit.vtxinwit), len(self.vin)):
self.wit.vtxinwit.append(CTxinWitness())
r += self.wit.serialize()
r += struct.pack("<I", self.nLockTime)
return r
# Regular serialization is without witness -- must explicitly
# call serialize_with_witness to include witness data.
def serialize(self):
return self.serialize_without_witness()
# Recalculate the txid (transaction hash without witness)
def rehash(self):
self.sha256 = None
self.calc_sha256()
def calc_sha256(self):
# We will only cache the serialization without witness in
# self.sha256 and self.hash -- those are expected to be the txid.
def calc_sha256(self, with_witness=False):
if with_witness:
# Don't cache the result, just return it
return uint256_from_str(hash256(self.serialize_with_witness()))
if self.sha256 is None:
self.sha256 = uint256_from_str(hash256(self.serialize()))
self.sha256 = uint256_from_str(hash256(self.serialize_without_witness()))
self.hash = encode(hash256(self.serialize())[::-1], 'hex_codec').decode('ascii')
def is_valid(self):
@@ -518,17 +644,17 @@ class CBlock(CBlockHeader):
super(CBlock, self).deserialize(f)
self.vtx = deser_vector(f, CTransaction)
def serialize(self):
def serialize(self, with_witness=False):
r = b""
r += super(CBlock, self).serialize()
r += ser_vector(self.vtx)
if with_witness:
r += ser_vector(self.vtx, "serialize_with_witness")
else:
r += ser_vector(self.vtx)
return r
def calc_merkle_root(self):
hashes = []
for tx in self.vtx:
tx.calc_sha256()
hashes.append(ser_uint256(tx.sha256))
# Calculate the merkle root given a vector of transaction hashes
def get_merkle_root(self, hashes):
while len(hashes) > 1:
newhashes = []
for i in range(0, len(hashes), 2):
@@ -537,6 +663,24 @@ class CBlock(CBlockHeader):
hashes = newhashes
return uint256_from_str(hashes[0])
def calc_merkle_root(self):
hashes = []
for tx in self.vtx:
tx.calc_sha256()
hashes.append(ser_uint256(tx.sha256))
return self.get_merkle_root(hashes)
def calc_witness_merkle_root(self):
# For witness root purposes, the hash of the
# coinbase, with witness, is defined to be 0...0
hashes = [ser_uint256(0)]
for tx in self.vtx[1:]:
# Calculate the hashes with witness data
hashes.append(ser_uint256(tx.calc_sha256(True)))
return self.get_merkle_root(hashes)
def is_valid(self):
self.calc_sha256()
target = uint256_from_compact(self.nBits)
@@ -812,11 +956,16 @@ class msg_tx(object):
self.tx.deserialize(f)
def serialize(self):
return self.tx.serialize()
return self.tx.serialize_without_witness()
def __repr__(self):
return "msg_tx(tx=%s)" % (repr(self.tx))
class msg_witness_tx(msg_tx):
def serialize(self):
return self.tx.serialize_with_witness()
class msg_block(object):
command = b"block"
@@ -849,6 +998,12 @@ class msg_generic(object):
def __repr__(self):
return "msg_generic()"
class msg_witness_block(msg_block):
def serialize(self):
r = self.block.serialize(with_witness=True)
return r
class msg_getaddr(object):
command = b"getaddr"
@@ -947,6 +1102,7 @@ class msg_sendheaders(object):
def __repr__(self):
return "msg_sendheaders()"
# getheaders message has
# number of entries
# vector of hashes
@@ -1068,6 +1224,8 @@ class NodeConnCB(object):
# tests; it causes message delivery to sleep for the specified time
# before acquiring the global lock and delivering the next message.
self.deliver_sleep_time = None
# Remember the services our peer has advertised
self.peer_services = None
def set_deliver_sleep_time(self, value):
with mininode_lock:
@@ -1105,6 +1263,7 @@ class NodeConnCB(object):
conn.ver_send = min(MY_VERSION, message.nVersion)
if message.nVersion < 209:
conn.ver_recv = conn.ver_send
conn.nServices = message.nServices
def on_verack(self, conn, message):
conn.ver_recv = conn.ver_send
@@ -1135,6 +1294,7 @@ class NodeConnCB(object):
def on_mempool(self, conn): pass
def on_pong(self, conn, message): pass
def on_feefilter(self, conn, message): pass
def on_sendheaders(self, conn, message): pass
# More useful callbacks and functions for NodeConnCB's which have a single NodeConn
class SingleNodeConnCB(NodeConnCB):
@@ -1183,15 +1343,16 @@ class NodeConn(asyncore.dispatcher):
b"getheaders": msg_getheaders,
b"reject": msg_reject,
b"mempool": msg_mempool,
b"feefilter": msg_feefilter
b"feefilter": msg_feefilter,
b"sendheaders": msg_sendheaders
}
MAGIC_BYTES = {
"mainnet": b"\xf9\xbe\xb4\xd9", # mainnet
"testnet3": b"\x0b\x11\x09\x07", # testnet3
"regtest": b"\xfa\xbf\xb5\xda" # regtest
"regtest": b"\xfa\xbf\xb5\xda", # regtest
}
def __init__(self, dstaddr, dstport, rpc, callback, net="regtest", services=1):
def __init__(self, dstaddr, dstport, rpc, callback, net="regtest", services=NODE_NETWORK):
asyncore.dispatcher.__init__(self, map=mininode_socket_map)
self.log = logging.getLogger("NodeConn(%s:%d)" % (dstaddr, dstport))
self.dstaddr = dstaddr
@@ -1206,6 +1367,7 @@ class NodeConn(asyncore.dispatcher):
self.network = net
self.cb = callback
self.disconnect = False
self.nServices = 0
# stuff version msg into sendbuf
vt = msg_version()