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dash/test/functional/test_framework/messages.py

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#!/usr/bin/env python3
# Copyright (c) 2010 ArtForz -- public domain half-a-node
# Copyright (c) 2012 Jeff Garzik
# Copyright (c) 2010-2020 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Bitcoin test framework primitive and message structures
CBlock, CTransaction, CBlockHeader, CTxIn, CTxOut, etc....:
data structures that should map to corresponding structures in
bitcoin/primitives
msg_block, msg_tx, msg_headers, etc.:
data structures that represent network messages
ser_*, deser_*: functions that handle serialization/deserialization.
Classes use __slots__ to ensure extraneous attributes aren't accidentally added
by tests, compromising their intended effect.
"""
from base64 import b32decode, b32encode
import copy
from collections import namedtuple
import hashlib
from io import BytesIO
import random
import socket
import struct
import time
from test_framework.crypto.siphash import siphash256
from test_framework.util import assert_equal
import dash_hash
MAX_LOCATOR_SZ = 101
MAX_BLOCK_SIZE = 2000000
MAX_BLOOM_FILTER_SIZE = 36000
MAX_BLOOM_HASH_FUNCS = 50
COIN = 100000000 # 1 btc in satoshis
MAX_MONEY = 21000000 * COIN
BIP125_SEQUENCE_NUMBER = 0xfffffffd # Sequence number that is BIP 125 opt-in and BIP 68-opt-out
MAX_PROTOCOL_MESSAGE_LENGTH = 3 * 1024 * 1024 # Maximum length of incoming protocol messages
MAX_HEADERS_UNCOMPRESSED_RESULT = 2000 # Number of headers sent in one getheaders result
MAX_HEADERS_COMPRESSED_RESULT = 8000 # Number of headers2 sent in one getheaders2 result
MAX_INV_SIZE = 50000 # Maximum number of entries in an 'inv' protocol message
NODE_NETWORK = (1 << 0)
NODE_BLOOM = (1 << 2)
NODE_COMPACT_FILTERS = (1 << 6)
NODE_NETWORK_LIMITED = (1 << 10)
NODE_HEADERS_COMPRESSED = (1 << 11)
NODE_P2P_V2 = (1 << 12)
MSG_TX = 1
MSG_BLOCK = 2
MSG_FILTERED_BLOCK = 3
MSG_GOVERNANCE_OBJECT = 17
MSG_GOVERNANCE_OBJECT_VOTE = 18
MSG_CMPCT_BLOCK = 20
MSG_TYPE_MASK = 0xffffffff >> 2
FILTER_TYPE_BASIC = 0
MAGIC_BYTES = {
"mainnet": b"\xbf\x0c\x6b\xbd", # mainnet
"testnet3": b"\xce\xe2\xca\xff", # testnet3
"regtest": b"\xfc\xc1\xb7\xdc", # regtest
"devnet": b"\xe2\xca\xff\xce", # devnet
}
def sha256(s):
return hashlib.sha256(s).digest()
def hash256(s):
return sha256(sha256(s))
def dashhash(s):
return dash_hash.getPoWHash(s)
def ser_compact_size(l):
r = b""
if l < 253:
r = struct.pack("B", l)
elif l < 0x10000:
r = struct.pack("<BH", 253, l)
elif l < 0x100000000:
r = struct.pack("<BI", 254, l)
else:
r = struct.pack("<BQ", 255, l)
return r
def deser_compact_size(f):
nit = struct.unpack("<B", f.read(1))[0]
if nit == 253:
nit = struct.unpack("<H", f.read(2))[0]
elif nit == 254:
nit = struct.unpack("<I", f.read(4))[0]
elif nit == 255:
nit = struct.unpack("<Q", f.read(8))[0]
return nit
def deser_string(f):
nit = deser_compact_size(f)
return f.read(nit)
def ser_string(s):
return ser_compact_size(len(s)) + s
def deser_uint256(f):
return int.from_bytes(f.read(32), 'little')
def ser_uint256(u):
return u.to_bytes(32, 'little')
def uint256_from_str(s):
return int.from_bytes(s[:32], 'little')
def uint256_to_string(uint256):
return '%064x' % uint256
def uint256_from_compact(c):
nbytes = (c >> 24) & 0xFF
v = (c & 0xFFFFFF) << (8 * (nbytes - 3))
return v
# deser_function_name: Allow for an alternate deserialization function on the
# entries in the vector.
def deser_vector(f, c, deser_function_name=None):
nit = deser_compact_size(f)
r = []
for _ in range(nit):
t = c()
if deser_function_name:
getattr(t, deser_function_name)(f)
else:
t.deserialize(f)
r.append(t)
return r
# ser_function_name: Allow for an alternate serialization function on the
# entries in the vector (we use this for serializing addrv2 messages).
def ser_vector(l, ser_function_name=None):
r = ser_compact_size(len(l))
for i in l:
if ser_function_name:
r += getattr(i, ser_function_name)()
else:
r += i.serialize()
return r
def deser_uint256_vector(f):
nit = deser_compact_size(f)
r = []
for _ in range(nit):
t = deser_uint256(f)
r.append(t)
return r
def ser_uint256_vector(l):
r = ser_compact_size(len(l))
for i in l:
r += ser_uint256(i)
return r
def deser_dyn_bitset(f, bytes_based):
if bytes_based:
nb = deser_compact_size(f)
n = nb * 8
else:
n = deser_compact_size(f)
nb = int((n + 7) / 8)
b = f.read(nb)
r = []
for i in range(n):
r.append((b[int(i / 8)] & (1 << (i % 8))) != 0)
return r
def ser_dyn_bitset(l, bytes_based):
n = len(l)
nb = int((n + 7) / 8)
r = [0] * nb
for i in range(n):
r[int(i / 8)] |= (1 if l[i] else 0) << (i % 8)
if bytes_based:
r = ser_compact_size(nb) + bytes(r)
else:
r = ser_compact_size(n) + bytes(r)
return r
def from_hex(obj, hex_string):
"""Deserialize from a hex string representation (e.g. from RPC)
Note that there is no complementary helper like e.g. `to_hex` for the
inverse operation. To serialize a message object to a hex string, simply
use obj.serialize().hex()"""
obj.deserialize(BytesIO(bytes.fromhex(hex_string)))
return obj
def tx_from_hex(hex_string):
"""Deserialize from hex string to a transaction object"""
return from_hex(CTransaction(), hex_string)
# Objects that map to dashd objects, which can be serialized/deserialized
class CService:
__slots__ = ("ip", "port")
def __init__(self):
self.ip = ""
self.port = 0
def deserialize(self, f):
self.ip = socket.inet_ntop(socket.AF_INET6, f.read(16))
self.port = struct.unpack(">H", f.read(2))[0]
def serialize(self):
r = b""
r += socket.inet_pton(socket.AF_INET6, self.ip)
r += struct.pack(">H", self.port)
return r
def __repr__(self):
return "CService(ip=%s port=%i)" % (self.ip, self.port)
class CAddress:
__slots__ = ("net", "ip", "nServices", "port", "time")
# see https://github.com/bitcoin/bips/blob/master/bip-0155.mediawiki
NET_IPV4 = 1
NET_I2P = 5
ADDRV2_NET_NAME = {
NET_IPV4: "IPv4",
NET_I2P: "I2P"
}
ADDRV2_ADDRESS_LENGTH = {
NET_IPV4: 4,
NET_I2P: 32
}
I2P_PAD = "===="
def __init__(self):
self.time = 0
self.nServices = 1
self.net = self.NET_IPV4
self.ip = "0.0.0.0"
self.port = 0
def __eq__(self, other):
return self.net == other.net and self.ip == other.ip and self.nServices == other.nServices and self.port == other.port and self.time == other.time
def deserialize(self, f, *, with_time=True):
"""Deserialize from addrv1 format (pre-BIP155)"""
if with_time:
# VERSION messages serialize CAddress objects without time
self.time = struct.unpack("<I", f.read(4))[0]
self.nServices = struct.unpack("<Q", f.read(8))[0]
# We only support IPv4 which means skip 12 bytes and read the next 4 as IPv4 address.
f.read(12)
self.net = self.NET_IPV4
self.ip = socket.inet_ntoa(f.read(4))
self.port = struct.unpack(">H", f.read(2))[0]
def serialize(self, *, with_time=True):
"""Serialize in addrv1 format (pre-BIP155)"""
assert self.net == self.NET_IPV4
r = b""
if with_time:
# VERSION messages serialize CAddress objects without time
r += struct.pack("<I", self.time)
r += struct.pack("<Q", self.nServices)
r += b"\x00" * 10 + b"\xff" * 2
r += socket.inet_aton(self.ip)
r += struct.pack(">H", self.port)
return r
def deserialize_v2(self, f):
"""Deserialize from addrv2 format (BIP155)"""
self.time = struct.unpack("<I", f.read(4))[0]
self.nServices = deser_compact_size(f)
self.net = struct.unpack("B", f.read(1))[0]
assert self.net in (self.NET_IPV4, self.NET_I2P)
address_length = deser_compact_size(f)
assert address_length == self.ADDRV2_ADDRESS_LENGTH[self.net]
addr_bytes = f.read(address_length)
if self.net == self.NET_IPV4:
self.ip = socket.inet_ntoa(addr_bytes)
else:
self.ip = b32encode(addr_bytes)[0:-len(self.I2P_PAD)].decode("ascii").lower() + ".b32.i2p"
self.port = struct.unpack(">H", f.read(2))[0]
def serialize_v2(self):
"""Serialize in addrv2 format (BIP155)"""
assert self.net in (self.NET_IPV4, self.NET_I2P)
r = b""
r += struct.pack("<I", self.time)
r += ser_compact_size(self.nServices)
r += struct.pack("B", self.net)
r += ser_compact_size(self.ADDRV2_ADDRESS_LENGTH[self.net])
if self.net == self.NET_IPV4:
r += socket.inet_aton(self.ip)
else:
sfx = ".b32.i2p"
assert self.ip.endswith(sfx)
r += b32decode(self.ip[0:-len(sfx)] + self.I2P_PAD, True)
r += struct.pack(">H", self.port)
return r
def __repr__(self):
return ("CAddress(nServices=%i net=%s addr=%s port=%i)"
% (self.nServices, self.ADDRV2_NET_NAME[self.net], self.ip, self.port))
class CInv:
__slots__ = ("hash", "type")
typemap = {
0: "Error",
MSG_TX: "TX",
MSG_BLOCK: "Block",
MSG_FILTERED_BLOCK: "filtered Block",
MSG_GOVERNANCE_OBJECT: "Governance Object",
MSG_GOVERNANCE_OBJECT_VOTE: "Governance Vote",
MSG_CMPCT_BLOCK: "CompactBlock",
}
def __init__(self, t=0, h=0):
self.type = t
self.hash = h
def deserialize(self, f):
self.type = struct.unpack("<I", f.read(4))[0]
self.hash = deser_uint256(f)
def serialize(self):
r = b""
r += struct.pack("<I", self.type)
r += ser_uint256(self.hash)
return r
def __repr__(self):
return "CInv(type=%s hash=%064x)" \
% (self.typemap.get(self.type, "%d" % self.type), self.hash)
def __eq__(self, other):
return isinstance(other, CInv) and self.hash == other.hash and self.type == other.type
class CBlockLocator:
__slots__ = ("nVersion", "vHave")
def __init__(self):
self.vHave = []
def deserialize(self, f):
struct.unpack("<i", f.read(4))[0] # Ignore version field.
self.vHave = deser_uint256_vector(f)
def serialize(self):
r = b""
r += struct.pack("<i", 0) # Bitcoin Core ignores version field. Set it to 0.
r += ser_uint256_vector(self.vHave)
return r
def __repr__(self):
return "CBlockLocator(vHave=%s)" % (repr(self.vHave))
class COutPoint:
__slots__ = ("hash", "n")
def __init__(self, hash=0, n=0xFFFFFFFF):
self.hash = hash
self.n = n
def deserialize(self, f):
self.hash = deser_uint256(f)
self.n = struct.unpack("<I", f.read(4))[0]
def serialize(self):
r = b""
r += ser_uint256(self.hash)
r += struct.pack("<I", self.n)
return r
def __repr__(self):
return "COutPoint(hash=%064x n=%i)" % (self.hash, self.n)
class CTxIn:
__slots__ = ("nSequence", "prevout", "scriptSig")
def __init__(self, outpoint=None, scriptSig=b"", nSequence=0):
if outpoint is None:
self.prevout = COutPoint()
else:
self.prevout = outpoint
self.scriptSig = scriptSig
self.nSequence = nSequence
def deserialize(self, f):
self.prevout = COutPoint()
self.prevout.deserialize(f)
self.scriptSig = deser_string(f)
self.nSequence = struct.unpack("<I", f.read(4))[0]
def serialize(self):
r = b""
r += self.prevout.serialize()
r += ser_string(self.scriptSig)
r += struct.pack("<I", self.nSequence)
return r
def __repr__(self):
return "CTxIn(prevout=%s scriptSig=%s nSequence=%i)" \
% (repr(self.prevout), self.scriptSig.hex(),
self.nSequence)
class CTxOut:
__slots__ = ("nValue", "scriptPubKey")
def __init__(self, nValue=0, scriptPubKey=b""):
self.nValue = nValue
self.scriptPubKey = scriptPubKey
def deserialize(self, f):
self.nValue = struct.unpack("<q", f.read(8))[0]
self.scriptPubKey = deser_string(f)
def serialize(self):
r = b""
r += struct.pack("<q", self.nValue)
r += ser_string(self.scriptPubKey)
return r
def __repr__(self):
return "CTxOut(nValue=%i.%08i scriptPubKey=%s)" \
% (self.nValue // COIN, self.nValue % COIN,
self.scriptPubKey.hex())
class CTransaction:
__slots__ = ("hash", "nLockTime", "nVersion", "sha256", "vin", "vout",
"nType", "vExtraPayload")
def __init__(self, tx=None):
if tx is None:
self.nVersion = 1
self.nType = 0
self.vin = []
self.vout = []
self.nLockTime = 0
self.vExtraPayload = None
self.sha256 = None
self.hash = None
else:
self.nVersion = tx.nVersion
self.nType = tx.nType
self.vin = copy.deepcopy(tx.vin)
self.vout = copy.deepcopy(tx.vout)
self.nLockTime = tx.nLockTime
self.vExtraPayload = tx.vExtraPayload
self.sha256 = tx.sha256
self.hash = tx.hash
def deserialize(self, f):
ver32bit = struct.unpack("<i", f.read(4))[0]
self.nVersion = ver32bit & 0xffff
self.nType = (ver32bit >> 16) & 0xffff
self.vin = deser_vector(f, CTxIn)
self.vout = deser_vector(f, CTxOut)
self.nLockTime = struct.unpack("<I", f.read(4))[0]
if self.nType != 0:
self.vExtraPayload = deser_string(f)
self.sha256 = None
self.hash = None
def serialize(self):
r = b""
ver32bit = int(self.nVersion | (self.nType << 16))
r += struct.pack("<i", ver32bit)
r += ser_vector(self.vin)
r += ser_vector(self.vout)
r += struct.pack("<I", self.nLockTime)
if self.nType != 0:
r += ser_string(self.vExtraPayload)
return r
def rehash(self):
self.sha256 = None
self.calc_sha256()
return self.hash
def calc_sha256(self):
if self.sha256 is None:
self.sha256 = uint256_from_str(hash256(self.serialize()))
self.hash = hash256(self.serialize())[::-1].hex()
def is_valid(self):
self.calc_sha256()
for tout in self.vout:
if tout.nValue < 0 or tout.nValue > 21000000 * COIN:
return False
return True
# Calculate the virtual transaction size using
# serialization size (does NOT use sigops).
def get_vsize(self):
return len(self.serialize())
# it's just a helper that return vsize to reduce conflicts during backporting
def get_weight(self):
return self.get_vsize()
def __repr__(self):
return "CTransaction(nVersion=%i vin=%s vout=%s nLockTime=%i)" \
% (self.nVersion, repr(self.vin), repr(self.vout), self.nLockTime)
class CBlockHeader:
__slots__ = ("hash", "hashMerkleRoot", "hashPrevBlock", "nBits", "nNonce",
"nTime", "nVersion", "sha256")
def __init__(self, header=None):
if header is None:
self.set_null()
else:
self.nVersion = header.nVersion
self.hashPrevBlock = header.hashPrevBlock
self.hashMerkleRoot = header.hashMerkleRoot
self.nTime = header.nTime
self.nBits = header.nBits
self.nNonce = header.nNonce
self.sha256 = header.sha256
self.hash = header.hash
self.calc_sha256()
def set_null(self):
self.nVersion = 4
self.hashPrevBlock = 0
self.hashMerkleRoot = 0
self.nTime = 0
self.nBits = 0
self.nNonce = 0
self.sha256 = None
self.hash = None
def deserialize(self, f):
self.nVersion = struct.unpack("<i", f.read(4))[0]
self.hashPrevBlock = deser_uint256(f)
self.hashMerkleRoot = deser_uint256(f)
self.nTime = struct.unpack("<I", f.read(4))[0]
self.nBits = struct.unpack("<I", f.read(4))[0]
self.nNonce = struct.unpack("<I", f.read(4))[0]
self.sha256 = None
self.hash = None
def serialize(self):
r = b""
r += struct.pack("<i", self.nVersion)
r += ser_uint256(self.hashPrevBlock)
r += ser_uint256(self.hashMerkleRoot)
r += struct.pack("<I", self.nTime)
r += struct.pack("<I", self.nBits)
r += struct.pack("<I", self.nNonce)
return r
def calc_sha256(self):
if self.sha256 is None:
r = b""
r += struct.pack("<i", self.nVersion)
r += ser_uint256(self.hashPrevBlock)
r += ser_uint256(self.hashMerkleRoot)
r += struct.pack("<I", self.nTime)
r += struct.pack("<I", self.nBits)
r += struct.pack("<I", self.nNonce)
self.sha256 = uint256_from_str(dashhash(r))
self.hash = dashhash(r)[::-1].hex()
def rehash(self):
self.sha256 = None
self.calc_sha256()
return self.sha256
def __repr__(self):
return "CBlockHeader(nVersion=%i hashPrevBlock=%064x hashMerkleRoot=%064x nTime=%s nBits=%08x nNonce=%08x)" \
% (self.nVersion, self.hashPrevBlock, self.hashMerkleRoot,
time.ctime(self.nTime), self.nBits, self.nNonce)
BLOCK_HEADER_SIZE = len(CBlockHeader().serialize())
assert_equal(BLOCK_HEADER_SIZE, 80)
class CBlock(CBlockHeader):
__slots__ = ("vtx",)
def __init__(self, header=None):
super().__init__(header)
self.vtx = []
def deserialize(self, f):
super().deserialize(f)
self.vtx = deser_vector(f, CTransaction)
def serialize(self):
r = b""
r += super().serialize()
r += ser_vector(self.vtx)
return r
# Calculate the merkle root given a vector of transaction hashes
@staticmethod
def get_merkle_root(hashes):
while len(hashes) > 1:
newhashes = []
for i in range(0, len(hashes), 2):
i2 = min(i+1, len(hashes)-1)
newhashes.append(hash256(hashes[i] + hashes[i2]))
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 is_valid(self):
self.calc_sha256()
target = uint256_from_compact(self.nBits)
if self.sha256 > target:
return False
for tx in self.vtx:
if not tx.is_valid():
return False
if self.calc_merkle_root() != self.hashMerkleRoot:
return False
return True
def solve(self):
self.rehash()
target = uint256_from_compact(self.nBits)
while self.sha256 > target:
self.nNonce += 1
self.rehash()
# it's just a helper that return vsize to reduce conflicts during backporting
def get_weight(self):
return len(self.serialize())
def __repr__(self):
return "CBlock(nVersion=%i hashPrevBlock=%064x hashMerkleRoot=%064x nTime=%s nBits=%08x nNonce=%08x vtx=%s)" \
% (self.nVersion, self.hashPrevBlock, self.hashMerkleRoot,
time.ctime(self.nTime), self.nBits, self.nNonce, repr(self.vtx))
class CompressibleBlockHeader:
__slots__ = ("bitfield", "timeOffset", "nVersion", "hashPrevBlock", "hashMerkleRoot", "nTime", "nBits", "nNonce",
"hash", "sha256")
FLAG_VERSION_BIT_0 = 1 << 0
FLAG_VERSION_BIT_1 = 1 << 1
FLAG_VERSION_BIT_2 = 1 << 2
FLAG_PREV_BLOCK_HASH = 1 << 3
FLAG_TIMESTAMP = 1 << 4
FLAG_NBITS = 1 << 5
BITMASK_VERSION = FLAG_VERSION_BIT_0 | FLAG_VERSION_BIT_1 | FLAG_VERSION_BIT_2
def __init__(self, header=None):
if header is None:
self.set_null()
else:
self.bitfield = 0
self.timeOffset = 0
self.nVersion = header.nVersion
self.hashPrevBlock = header.hashPrevBlock
self.hashMerkleRoot = header.hashMerkleRoot
self.nTime = header.nTime
self.nBits = header.nBits
self.nNonce = header.nNonce
self.hash = None
self.sha256 = None
self.calc_sha256()
def set_null(self):
self.bitfield = 0
self.timeOffset = 0
self.nVersion = 0
self.hashPrevBlock = 0
self.hashMerkleRoot = 0
self.nTime = 0
self.nBits = 0
self.nNonce = 0
self.hash = None
self.sha256 = None
def deserialize(self, f):
self.bitfield = struct.unpack("<B", f.read(1))[0]
if self.bitfield & self.BITMASK_VERSION == 0:
self.nVersion = struct.unpack("<i", f.read(4))[0]
if self.bitfield & self.FLAG_PREV_BLOCK_HASH:
self.hashPrevBlock = deser_uint256(f)
self.hashMerkleRoot = deser_uint256(f)
if self.bitfield & self.FLAG_TIMESTAMP:
self.nTime = struct.unpack("<I", f.read(4))[0]
else:
self.timeOffset = struct.unpack("<h", f.read(2))[0]
if self.bitfield & self.FLAG_NBITS:
self.nBits = struct.unpack("<I", f.read(4))[0]
self.nNonce = struct.unpack("<I", f.read(4))[0]
self.rehash()
def serialize(self):
r = b""
r += struct.pack("<B", self.bitfield)
if not self.bitfield & self.BITMASK_VERSION:
r += struct.pack("<i", self.nVersion)
if self.bitfield & self.FLAG_PREV_BLOCK_HASH:
r += ser_uint256(self.hashPrevBlock)
r += ser_uint256(self.hashMerkleRoot)
r += struct.pack("<I", self.nTime) if self.bitfield & self.FLAG_TIMESTAMP else struct.pack("<h", self.timeOffset)
if self.bitfield & self.FLAG_NBITS:
r += struct.pack("<I", self.nBits)
r += struct.pack("<I", self.nNonce)
return r
def calc_sha256(self):
if self.sha256 is None:
r = b""
r += struct.pack("<i", self.nVersion)
r += ser_uint256(self.hashPrevBlock)
r += ser_uint256(self.hashMerkleRoot)
r += struct.pack("<I", self.nTime)
r += struct.pack("<I", self.nBits)
r += struct.pack("<I", self.nNonce)
self.sha256 = uint256_from_str(dashhash(r))
self.hash = int(dashhash(r)[::-1].hex(), 16)
def rehash(self):
self.sha256 = None
self.calc_sha256()
return self.sha256
def __repr__(self):
return "BlockHeaderCompressed(bitfield=%064x, nVersion=%i hashPrevBlock=%064x hashMerkleRoot=%064x nTime=%s " \
"nBits=%08x nNonce=%08x timeOffset=%i)" % \
(self.bitfield, self.nVersion, self.hashPrevBlock, self.hashMerkleRoot, time.ctime(self.nTime), self.nBits, self.nNonce, self.timeOffset)
def __save_version_as_most_recent(self, last_unique_versions):
last_unique_versions.insert(0, self.nVersion)
# Evict the oldest version
if len(last_unique_versions) > 7:
last_unique_versions.pop()
@staticmethod
def __mark_version_as_most_recent(last_unique_versions, version_idx):
# Move version to the front of the list
last_unique_versions.insert(0, last_unique_versions.pop(version_idx))
def compress(self, last_blocks, last_unique_versions):
if not last_blocks:
# First block, everything must be uncompressed
self.bitfield &= (~CompressibleBlockHeader.BITMASK_VERSION)
self.bitfield |= CompressibleBlockHeader.FLAG_PREV_BLOCK_HASH
self.bitfield |= CompressibleBlockHeader.FLAG_TIMESTAMP
self.bitfield |= CompressibleBlockHeader.FLAG_NBITS
self.__save_version_as_most_recent(last_unique_versions)
return
# Compress version
try:
version_idx = last_unique_versions.index(self.nVersion)
version_offset = len(last_unique_versions) - version_idx
self.bitfield &= (~CompressibleBlockHeader.BITMASK_VERSION)
self.bitfield |= (version_offset & CompressibleBlockHeader.BITMASK_VERSION)
self.__mark_version_as_most_recent(last_unique_versions, version_idx)
except ValueError:
self.__save_version_as_most_recent(last_unique_versions)
# We have the previous block
last_block = last_blocks[-1]
# Compress time
self.timeOffset = self.nTime - last_block.nTime
if self.timeOffset > 32767 or self.timeOffset < -32768:
# Time diff overflows, we have to send it as 4 bytes (uncompressed)
self.bitfield |= CompressibleBlockHeader.FLAG_TIMESTAMP
# If nBits doesn't match previous block, we have to send it
if self.nBits != last_block.nBits:
self.bitfield |= CompressibleBlockHeader.FLAG_NBITS
def uncompress(self, last_compressed_blocks, last_unique_versions):
if not last_compressed_blocks:
# First block header is always uncompressed
self.__save_version_as_most_recent(last_unique_versions)
return
previous_block = last_compressed_blocks[-1]
# Uncompress version
version_idx = self.bitfield & self.BITMASK_VERSION
if version_idx != 0:
if version_idx <= len(last_unique_versions):
self.nVersion = last_unique_versions[version_idx - 1]
self.__mark_version_as_most_recent(last_unique_versions, version_idx - 1)
else:
self.__save_version_as_most_recent(last_unique_versions)
# Uncompress prev block hash
if not self.bitfield & self.FLAG_PREV_BLOCK_HASH:
self.hashPrevBlock = previous_block.hash
# Uncompress time
if not self.bitfield & self.FLAG_TIMESTAMP:
self.nTime = previous_block.nTime + self.timeOffset
# Uncompress time bits
if not self.bitfield & self.FLAG_NBITS:
self.nBits = previous_block.nBits
self.rehash()
class PrefilledTransaction:
__slots__ = ("index", "tx")
def __init__(self, index=0, tx = None):
self.index = index
self.tx = tx
def deserialize(self, f):
self.index = deser_compact_size(f)
self.tx = CTransaction()
self.tx.deserialize(f)
def serialize(self):
r = b""
r += ser_compact_size(self.index)
r += self.tx.serialize()
return r
def __repr__(self):
return "PrefilledTransaction(index=%d, tx=%s)" % (self.index, repr(self.tx))
# This is what we send on the wire, in a cmpctblock message.
class P2PHeaderAndShortIDs:
__slots__ = ("header", "nonce", "prefilled_txn", "prefilled_txn_length",
"shortids", "shortids_length")
def __init__(self):
self.header = CBlockHeader()
self.nonce = 0
self.shortids_length = 0
self.shortids = []
self.prefilled_txn_length = 0
self.prefilled_txn = []
def deserialize(self, f):
self.header.deserialize(f)
self.nonce = struct.unpack("<Q", f.read(8))[0]
self.shortids_length = deser_compact_size(f)
for _ in range(self.shortids_length):
# shortids are defined to be 6 bytes in the spec, so append
# two zero bytes and read it in as an 8-byte number
self.shortids.append(struct.unpack("<Q", f.read(6) + b'\x00\x00')[0])
self.prefilled_txn = deser_vector(f, PrefilledTransaction)
self.prefilled_txn_length = len(self.prefilled_txn)
def serialize(self):
r = b""
r += self.header.serialize()
r += struct.pack("<Q", self.nonce)
r += ser_compact_size(self.shortids_length)
for x in self.shortids:
# We only want the first 6 bytes
r += struct.pack("<Q", x)[0:6]
r += ser_vector(self.prefilled_txn)
return r
def __repr__(self):
return "P2PHeaderAndShortIDs(header=%s, nonce=%d, shortids_length=%d, shortids=%s, prefilled_txn_length=%d, prefilledtxn=%s" % (repr(self.header), self.nonce, self.shortids_length, repr(self.shortids), self.prefilled_txn_length, repr(self.prefilled_txn))
# Calculate the BIP 152-compact blocks shortid for a given transaction hash
def calculate_shortid(k0, k1, tx_hash):
expected_shortid = siphash256(k0, k1, tx_hash)
expected_shortid &= 0x0000ffffffffffff
return expected_shortid
# This version gets rid of the array lengths, and reinterprets the differential
# encoding into indices that can be used for lookup.
class HeaderAndShortIDs:
__slots__ = ("header", "nonce", "prefilled_txn", "shortids")
def __init__(self, p2pheaders_and_shortids = None):
self.header = CBlockHeader()
self.nonce = 0
self.shortids = []
self.prefilled_txn = []
if p2pheaders_and_shortids is not None:
self.header = p2pheaders_and_shortids.header
self.nonce = p2pheaders_and_shortids.nonce
self.shortids = p2pheaders_and_shortids.shortids
last_index = -1
for x in p2pheaders_and_shortids.prefilled_txn:
self.prefilled_txn.append(PrefilledTransaction(x.index + last_index + 1, x.tx))
last_index = self.prefilled_txn[-1].index
def to_p2p(self):
ret = P2PHeaderAndShortIDs()
ret.header = self.header
ret.nonce = self.nonce
ret.shortids_length = len(self.shortids)
ret.shortids = self.shortids
ret.prefilled_txn_length = len(self.prefilled_txn)
ret.prefilled_txn = []
last_index = -1
for x in self.prefilled_txn:
ret.prefilled_txn.append(PrefilledTransaction(x.index - last_index - 1, x.tx))
last_index = x.index
return ret
def get_siphash_keys(self):
header_nonce = self.header.serialize()
header_nonce += struct.pack("<Q", self.nonce)
hash_header_nonce_as_str = sha256(header_nonce)
key0 = struct.unpack("<Q", hash_header_nonce_as_str[0:8])[0]
key1 = struct.unpack("<Q", hash_header_nonce_as_str[8:16])[0]
return [ key0, key1 ]
def initialize_from_block(self, block, nonce=0, prefill_list=None):
if prefill_list is None:
prefill_list = [0]
self.header = CBlockHeader(block)
self.nonce = nonce
self.prefilled_txn = [ PrefilledTransaction(i, block.vtx[i]) for i in prefill_list ]
self.shortids = []
[k0, k1] = self.get_siphash_keys()
for i in range(len(block.vtx)):
if i not in prefill_list:
self.shortids.append(calculate_shortid(k0, k1, block.vtx[i].sha256))
def __repr__(self):
return "HeaderAndShortIDs(header=%s, nonce=%d, shortids=%s, prefilledtxn=%s" % (repr(self.header), self.nonce, repr(self.shortids), repr(self.prefilled_txn))
class BlockTransactionsRequest:
__slots__ = ("blockhash", "indexes")
def __init__(self, blockhash=0, indexes = None):
self.blockhash = blockhash
self.indexes = indexes if indexes is not None else []
def deserialize(self, f):
self.blockhash = deser_uint256(f)
indexes_length = deser_compact_size(f)
for _ in range(indexes_length):
self.indexes.append(deser_compact_size(f))
def serialize(self):
r = b""
r += ser_uint256(self.blockhash)
r += ser_compact_size(len(self.indexes))
for x in self.indexes:
r += ser_compact_size(x)
return r
# helper to set the differentially encoded indexes from absolute ones
def from_absolute(self, absolute_indexes):
self.indexes = []
last_index = -1
for x in absolute_indexes:
self.indexes.append(x-last_index-1)
last_index = x
def to_absolute(self):
absolute_indexes = []
last_index = -1
for x in self.indexes:
absolute_indexes.append(x+last_index+1)
last_index = absolute_indexes[-1]
return absolute_indexes
def __repr__(self):
return "BlockTransactionsRequest(hash=%064x indexes=%s)" % (self.blockhash, repr(self.indexes))
class BlockTransactions:
__slots__ = ("blockhash", "transactions")
def __init__(self, blockhash=0, transactions = None):
self.blockhash = blockhash
self.transactions = transactions if transactions is not None else []
def deserialize(self, f):
self.blockhash = deser_uint256(f)
self.transactions = deser_vector(f, CTransaction)
def serialize(self):
r = b""
r += ser_uint256(self.blockhash)
r += ser_vector(self.transactions)
return r
def __repr__(self):
return "BlockTransactions(hash=%064x transactions=%s)" % (self.blockhash, repr(self.transactions))
class CPartialMerkleTree:
__slots__ = ("nTransactions", "vBits", "vHash")
def __init__(self):
self.nTransactions = 0
self.vBits = []
self.vHash = []
def deserialize(self, f):
self.nTransactions = struct.unpack("<I", f.read(4))[0]
self.vHash = deser_uint256_vector(f)
self.vBits = deser_dyn_bitset(f, True)
def serialize(self):
r = b""
r += struct.pack("<I", self.nTransactions)
r += ser_uint256_vector(self.vHash)
r += ser_dyn_bitset(self.vBits, True)
return r
def __repr__(self):
return "CPartialMerkleTree(nTransactions=%d vBits.size=%d vHash.size=%d)" % (self.nTransactions, len(self.vBits), len(self.vHash))
class CMerkleBlock:
__slots__ = ("header", "txn")
def __init__(self, header=None, txn=None):
if header is None:
self.header = CBlockHeader()
else:
self.header = header
if txn is None:
self.txn = CPartialMerkleTree()
else:
self.txn = txn
def deserialize(self, f):
self.header.deserialize(f)
self.txn.deserialize(f)
def serialize(self):
r = b""
r += self.header.serialize()
r += self.txn.serialize()
return r
def __repr__(self):
return "CMerkleBlock(header=%s txn=%s)" % (repr(self.header), repr(self.txn))
class CCbTx:
__slots__ = ("nVersion", "nHeight", "merkleRootMNList", "merkleRootQuorums", "bestCLHeightDiff", "bestCLSignature", "assetLockedAmount")
def __init__(self, version=None, height=None, merkleRootMNList=None, merkleRootQuorums=None, bestCLHeightDiff=None, bestCLSignature=None, assetLockedAmount=None):
self.set_null()
if version is not None:
self.nVersion = version
if height is not None:
self.nHeight = height
if merkleRootMNList is not None:
self.merkleRootMNList = merkleRootMNList
if merkleRootQuorums is not None:
self.merkleRootQuorums = merkleRootQuorums
if bestCLHeightDiff is not None:
self.bestCLHeightDiff = bestCLHeightDiff
if bestCLSignature is not None:
self.bestCLSignature = bestCLSignature
if assetLockedAmount is not None:
self.assetLockedAmount = assetLockedAmount
def set_null(self):
self.nVersion = 0
self.nHeight = 0
self.merkleRootMNList = None
self.merkleRootQuorums = None
self.bestCLHeightDiff = 0
self.bestCLSignature = b'\x00' * 96
self.assetLockedAmount = 0
def deserialize(self, f):
self.nVersion = struct.unpack("<H", f.read(2))[0]
self.nHeight = struct.unpack("<i", f.read(4))[0]
self.merkleRootMNList = deser_uint256(f)
if self.nVersion >= 2:
self.merkleRootQuorums = deser_uint256(f)
if self.nVersion >= 3:
self.bestCLHeightDiff = deser_compact_size(f)
self.bestCLSignature = f.read(96)
self.assetLockedAmount = struct.unpack("<q", f.read(8))[0]
def serialize(self):
r = b""
r += struct.pack("<H", self.nVersion)
r += struct.pack("<i", self.nHeight)
r += ser_uint256(self.merkleRootMNList)
if self.nVersion >= 2:
r += ser_uint256(self.merkleRootQuorums)
if self.nVersion >= 3:
r += ser_compact_size(self.bestCLHeightDiff)
r += self.bestCLSignature
r += struct.pack("<q", self.assetLockedAmount)
return r
def __repr__(self):
return "CCbTx(nVersion=%i nHeight=%i merkleRootMNList=%s merkleRootQuorums=%s bestCLHeightDiff=%i bestCLSignature=%s assetLockedAmount=%i)" \
% (self.nVersion, self.nHeight, self.merkleRootMNList.hex(), self.merkleRootQuorums.hex(), self.bestCLHeightDiff, self.bestCLSignature.hex(), self.assetLockedAmount)
class CAssetLockTx:
__slots__ = ("version", "creditOutputs")
def __init__(self, version=None, creditOutputs=None):
self.set_null()
if version is not None:
self.version = version
self.creditOutputs = creditOutputs if creditOutputs is not None else []
def set_null(self):
self.version = 0
self.creditOutputs = None
def deserialize(self, f):
self.version = struct.unpack("<B", f.read(1))[0]
self.creditOutputs = deser_vector(f, CTxOut)
def serialize(self):
r = b""
r += struct.pack("<B", self.version)
r += ser_vector(self.creditOutputs)
return r
def __repr__(self):
return "CAssetLockTx(version={} creditOutputs={}" \
.format(self.version, repr(self.creditOutputs))
class CAssetUnlockTx:
__slots__ = ("version", "index", "fee", "requestedHeight", "quorumHash", "quorumSig")
def __init__(self, version=None, index=None, fee=None, requestedHeight=None, quorumHash = 0, quorumSig = None):
self.set_null()
if version is not None:
self.version = version
if index is not None:
self.index = index
if fee is not None:
self.fee = fee
if requestedHeight is not None:
self.requestedHeight = requestedHeight
if quorumHash is not None:
self.quorumHash = quorumHash
if quorumSig is not None:
self.quorumSig = quorumSig
def set_null(self):
self.version = 0
self.index = 0
self.fee = None
self.requestedHeight = 0
self.quorumHash = 0
self.quorumSig = b'\x00' * 96
def deserialize(self, f):
self.version = struct.unpack("<B", f.read(1))[0]
self.index = struct.unpack("<Q", f.read(8))[0]
self.fee = struct.unpack("<I", f.read(4))[0]
self.requestedHeight = struct.unpack("<I", f.read(4))[0]
self.quorumHash = deser_uint256(f)
self.quorumSig = f.read(96)
def serialize(self):
r = b""
r += struct.pack("<B", self.version)
r += struct.pack("<Q", self.index)
r += struct.pack("<I", self.fee)
r += struct.pack("<I", self.requestedHeight)
r += ser_uint256(self.quorumHash)
r += self.quorumSig
return r
def __repr__(self):
return "CAssetUnlockTx(version={} index={} fee={} requestedHeight={} quorumHash={:x} quorumSig={}" \
.format(self.version, self.index, self.fee, self.requestedHeight, self.quorumHash, self.quorumSig.hex())
class CMnEhf:
__slots__ = ("version", "versionBit", "quorumHash", "quorumSig")
def __init__(self, version=None, versionBit=None, quorumHash = 0, quorumSig = None):
self.set_null()
if version is not None:
self.version = version
if versionBit is not None:
self.versionBit = versionBit
if quorumHash is not None:
self.quorumHash = quorumHash
if quorumSig is not None:
self.quorumSig = quorumSig
def set_null(self):
self.version = 0
self.versionBit = 0
self.quorumHash = 0
self.quorumSig = b'\x00' * 96
def deserialize(self, f):
self.version = struct.unpack("<B", f.read(1))[0]
self.versionBit = struct.unpack("<B", f.read(1))[0]
self.quorumHash = deser_uint256(f)
self.quorumSig = f.read(96)
def serialize(self):
r = b""
r += struct.pack("<B", self.version)
r += struct.pack("<B", self.versionBit)
r += ser_uint256(self.quorumHash)
r += self.quorumSig
return r
def __repr__(self):
return "CMnEhf(version={} versionBit={} quorumHash={:x} quorumSig={}" \
.format(self.version, self.versionBit, self.quorumHash, self.quorumSig.hex())
class CSimplifiedMNListEntry:
__slots__ = ("proRegTxHash", "confirmedHash", "service", "pubKeyOperator", "keyIDVoting", "isValid", "nVersion", "type", "platformHTTPPort", "platformNodeID")
def __init__(self):
self.set_null()
def set_null(self):
self.proRegTxHash = 0
self.confirmedHash = 0
self.service = CService()
self.pubKeyOperator = b'\x00' * 48
self.keyIDVoting = 0
self.isValid = False
self.nVersion = 0
self.type = 0
self.platformHTTPPort = 0
self.platformNodeID = b'\x00' * 20
def deserialize(self, f):
self.nVersion = struct.unpack("<H", f.read(2))[0]
self.proRegTxHash = deser_uint256(f)
self.confirmedHash = deser_uint256(f)
self.service.deserialize(f)
self.pubKeyOperator = f.read(48)
self.keyIDVoting = f.read(20)
self.isValid = struct.unpack("<?", f.read(1))[0]
if self.nVersion == 2:
self.type = struct.unpack("<H", f.read(2))[0]
if self.type == 1:
self.platformHTTPPort = struct.unpack("<H", f.read(2))[0]
self.platformNodeID = f.read(20)
def serialize(self, with_version = True):
r = b""
if with_version:
r += struct.pack("<H", self.nVersion)
r += ser_uint256(self.proRegTxHash)
r += ser_uint256(self.confirmedHash)
r += self.service.serialize()
r += self.pubKeyOperator
r += self.keyIDVoting
r += struct.pack("<?", self.isValid)
if self.nVersion == 2:
r += struct.pack("<H", self.type)
if self.type == 1:
r += struct.pack("<H", self.platformHTTPPort)
r += self.platformNodeID
return r
class CFinalCommitment:
__slots__ = ("nVersion", "llmqType", "quorumHash", "quorumIndex", "signers", "validMembers", "quorumPublicKey",
"quorumVvecHash", "quorumSig", "membersSig")
def __init__(self):
self.set_null()
def set_null(self):
self.nVersion = 0
self.llmqType = 0
self.quorumHash = 0
self.quorumIndex = 0
self.signers = []
self.validMembers = []
self.quorumPublicKey = b'\x00' * 48
self.quorumVvecHash = 0
self.quorumSig = b'\x00' * 96
self.membersSig = b'\x00' * 96
def deserialize(self, f):
self.nVersion = struct.unpack("<H", f.read(2))[0]
self.llmqType = struct.unpack("<B", f.read(1))[0]
self.quorumHash = deser_uint256(f)
if self.nVersion == 2 or self.nVersion == 4:
self.quorumIndex = struct.unpack("<H", f.read(2))[0]
self.signers = deser_dyn_bitset(f, False)
self.validMembers = deser_dyn_bitset(f, False)
self.quorumPublicKey = f.read(48)
self.quorumVvecHash = deser_uint256(f)
self.quorumSig = f.read(96)
self.membersSig = f.read(96)
def serialize(self):
r = b""
r += struct.pack("<H", self.nVersion)
r += struct.pack("<B", self.llmqType)
r += ser_uint256(self.quorumHash)
if self.nVersion == 2 or self.nVersion == 4:
r += struct.pack("<H", self.quorumIndex)
r += ser_dyn_bitset(self.signers, False)
r += ser_dyn_bitset(self.validMembers, False)
r += self.quorumPublicKey
r += ser_uint256(self.quorumVvecHash)
r += self.quorumSig
r += self.membersSig
return r
def __repr__(self):
return "CFinalCommitment(nVersion={} llmqType={} quorumHash={:x} quorumIndex={} signers={}" \
" validMembers={} quorumPublicKey={} quorumVvecHash={:x}) quorumSig={} membersSig={})" \
.format(self.nVersion, self.llmqType, self.quorumHash, self.quorumIndex, repr(self.signers),
repr(self.validMembers), self.quorumPublicKey.hex(), self.quorumVvecHash, self.quorumSig.hex(), self.membersSig.hex())
class CGovernanceObject:
__slots__ = ("nHashParent", "nRevision", "nTime", "nCollateralHash", "vchData", "nObjectType",
"masternodeOutpoint", "vchSig")
def __init__(self):
self.nHashParent = 0
self.nRevision = 0
self.nTime = 0
self.nCollateralHash = 0
self.vchData = []
self.nObjectType = 0
self.masternodeOutpoint = COutPoint()
self.vchSig = []
def deserialize(self, f):
self.nHashParent = deser_uint256(f)
self.nRevision = struct.unpack("<i", f.read(4))[0]
self.nTime = struct.unpack("<q", f.read(8))[0]
self.nCollateralHash = deser_uint256(f)
size = deser_compact_size(f)
if size > 0:
self.vchData = f.read(size)
self.nObjectType = struct.unpack("<i", f.read(4))[0]
self.masternodeOutpoint.deserialize(f)
size = deser_compact_size(f)
if size > 0:
self.vchSig = f.read(size)
def serialize(self):
r = b""
r += ser_uint256(self.nParentHash)
r += struct.pack("<i", self.nRevision)
r += struct.pack("<q", self.nTime)
r += deser_uint256(self.nCollateralHash)
r += deser_compact_size(len(self.vchData))
r += self.vchData
r += struct.pack("<i", self.nObjectType)
r += self.masternodeOutpoint.serialize()
r += deser_compact_size(len(self.vchSig))
r += self.vchSig
return r
class CGovernanceVote:
__slots__ = ("masternodeOutpoint", "nParentHash", "nVoteOutcome", "nVoteSignal", "nTime", "vchSig")
def __init__(self):
self.masternodeOutpoint = COutPoint()
self.nParentHash = 0
self.nVoteOutcome = 0
self.nVoteSignal = 0
self.nTime = 0
self.vchSig = []
def deserialize(self, f):
self.masternodeOutpoint.deserialize(f)
self.nParentHash = deser_uint256(f)
self.nVoteOutcome = struct.unpack("<i", f.read(4))[0]
self.nVoteSignal = struct.unpack("<i", f.read(4))[0]
self.nTime = struct.unpack("<q", f.read(8))[0]
size = deser_compact_size(f)
if size > 0:
self.vchSig = f.read(size)
def serialize(self):
r = b""
r += self.masternodeOutpoint.serialize()
r += ser_uint256(self.nParentHash)
r += struct.pack("<i", self.nVoteOutcome)
r += struct.pack("<i", self.nVoteSignal)
r += struct.pack("<q", self.nTime)
r += ser_compact_size(len(self.vchSig))
r += self.vchSig
return r
class CRecoveredSig:
__slots__ = ("llmqType", "quorumHash", "id", "msgHash", "sig")
def __init__(self):
self.llmqType = 0
self.quorumHash = 0
self.id = 0
self.msgHash = 0
self.sig = b'\x00' * 96
def deserialize(self, f):
self.llmqType = struct.unpack("<B", f.read(1))[0]
self.quorumHash = deser_uint256(f)
self.id = deser_uint256(f)
self.msgHash = deser_uint256(f)
self.sig = f.read(96)
def serialize(self):
r = b""
r += struct.pack("<B", self.llmqType)
r += ser_uint256(self.quorumHash)
r += ser_uint256(self.id)
r += ser_uint256(self.msgHash)
r += self.sig
return r
class CSigShare:
__slots__ = ("llmqType", "quorumHash", "quorumMember", "id", "msgHash", "sigShare")
def __init__(self):
self.llmqType = 0
self.quorumHash = 0
self.quorumMember = 0
self.id = 0
self.msgHash = 0
self.sigShare = b'\x00' * 96
def deserialize(self, f):
self.llmqType = struct.unpack("<B", f.read(1))[0]
self.quorumHash = deser_uint256(f)
self.quorumMember = struct.unpack("<H", f.read(2))[0]
self.id = deser_uint256(f)
self.msgHash = deser_uint256(f)
self.sigShare = f.read(96)
def serialize(self):
r = b""
r += struct.pack("<B", self.llmqType)
r += ser_uint256(self.quorumHash)
r += struct.pack("<H", self.quorumMember)
r += ser_uint256(self.id)
r += ser_uint256(self.msgHash)
r += self.sigShare
return r
class CBLSPublicKey:
__slots__ = ("data")
def __init__(self):
self.data = b'\x00' * 48
def deserialize(self, f):
self.data = f.read(48)
def serialize(self):
r = b""
r += self.data
return r
class CBLSIESEncryptedSecretKey:
__slots__ = ("ephemeral_pubKey", "iv", "data")
def __init__(self):
self.ephemeral_pubKey = b'\x00' * 48
self.iv = b'\x00' * 32
self.data = b'\x00' * 32
def deserialize(self, f):
self.ephemeral_pubKey = f.read(48)
self.iv = f.read(32)
data_size = deser_compact_size(f)
self.data = f.read(data_size)
def serialize(self):
r = b""
r += self.ephemeral_pubKey
r += self.iv
r += ser_compact_size(len(self.data))
r += self.data
return r
# Objects that correspond to messages on the wire
class msg_version:
__slots__ = ("addrFrom", "addrTo", "nNonce", "relay", "nServices",
"nStartingHeight", "nTime", "nVersion", "strSubVer")
msgtype = b"version"
def __init__(self):
self.nVersion = 0
self.nServices = 0
self.nTime = int(time.time())
self.addrTo = CAddress()
self.addrFrom = CAddress()
self.nNonce = random.getrandbits(64)
self.strSubVer = ''
self.nStartingHeight = -1
self.relay = 0
def deserialize(self, f):
self.nVersion = struct.unpack("<i", f.read(4))[0]
self.nServices = struct.unpack("<Q", f.read(8))[0]
self.nTime = struct.unpack("<q", f.read(8))[0]
self.addrTo = CAddress()
self.addrTo.deserialize(f, with_time=False)
self.addrFrom = CAddress()
self.addrFrom.deserialize(f, with_time=False)
self.nNonce = struct.unpack("<Q", f.read(8))[0]
self.strSubVer = deser_string(f).decode('utf-8')
self.nStartingHeight = struct.unpack("<i", f.read(4))[0]
# Relay field is optional for version 70001 onwards
# But, unconditionally check it to match behaviour in bitcoind
try:
self.relay = struct.unpack("<b", f.read(1))[0]
except struct.error:
self.relay = 0
def serialize(self):
r = b""
r += struct.pack("<i", self.nVersion)
r += struct.pack("<Q", self.nServices)
r += struct.pack("<q", self.nTime)
r += self.addrTo.serialize(with_time=False)
r += self.addrFrom.serialize(with_time=False)
r += struct.pack("<Q", self.nNonce)
r += ser_string(self.strSubVer.encode('utf-8'))
r += struct.pack("<i", self.nStartingHeight)
r += struct.pack("<b", self.relay)
return r
def __repr__(self):
return 'msg_version(nVersion=%i nServices=%i nTime=%s addrTo=%s addrFrom=%s nNonce=0x%016X strSubVer=%s nStartingHeight=%i relay=%i)' \
% (self.nVersion, self.nServices, time.ctime(self.nTime),
repr(self.addrTo), repr(self.addrFrom), self.nNonce,
self.strSubVer, self.nStartingHeight, self.relay)
class msg_verack:
__slots__ = ()
msgtype = b"verack"
def __init__(self):
pass
def deserialize(self, f):
pass
def serialize(self):
return b""
def __repr__(self):
return "msg_verack()"
class msg_addr:
__slots__ = ("addrs",)
msgtype = b"addr"
def __init__(self):
self.addrs = []
def deserialize(self, f):
self.addrs = deser_vector(f, CAddress)
def serialize(self):
return ser_vector(self.addrs)
def __repr__(self):
return "msg_addr(addrs=%s)" % (repr(self.addrs))
class msg_addrv2:
__slots__ = ("addrs",)
# msgtype = b"addrv2"
msgtype = b"addrv2"
def __init__(self):
self.addrs = []
def deserialize(self, f):
self.addrs = deser_vector(f, CAddress, "deserialize_v2")
def serialize(self):
return ser_vector(self.addrs, "serialize_v2")
def __repr__(self):
return "msg_addrv2(addrs=%s)" % (repr(self.addrs))
class msg_sendaddrv2:
__slots__ = ()
# msgtype = b"sendaddrv2"
msgtype = b"sendaddrv2"
def __init__(self):
pass
def deserialize(self, f):
pass
def serialize(self):
return b""
def __repr__(self):
return "msg_sendaddrv2()"
class msg_inv:
__slots__ = ("inv",)
msgtype = b"inv"
def __init__(self, inv=None):
if inv is None:
self.inv = []
else:
self.inv = inv
def deserialize(self, f):
self.inv = deser_vector(f, CInv)
def serialize(self):
return ser_vector(self.inv)
def __repr__(self):
return "msg_inv(inv=%s)" % (repr(self.inv))
class msg_getdata:
__slots__ = ("inv",)
msgtype = b"getdata"
def __init__(self, inv=None):
self.inv = inv if inv is not None else []
def deserialize(self, f):
self.inv = deser_vector(f, CInv)
def serialize(self):
return ser_vector(self.inv)
def __repr__(self):
return "msg_getdata(inv=%s)" % (repr(self.inv))
class msg_getblocks:
__slots__ = ("locator", "hashstop")
msgtype = b"getblocks"
def __init__(self):
self.locator = CBlockLocator()
self.hashstop = 0
def deserialize(self, f):
self.locator = CBlockLocator()
self.locator.deserialize(f)
self.hashstop = deser_uint256(f)
def serialize(self):
r = b""
r += self.locator.serialize()
r += ser_uint256(self.hashstop)
return r
def __repr__(self):
return "msg_getblocks(locator=%s hashstop=%064x)" \
% (repr(self.locator), self.hashstop)
class msg_tx:
__slots__ = ("tx",)
msgtype = b"tx"
def __init__(self, tx=None):
if tx is None:
self.tx = CTransaction()
else:
self.tx = tx
def deserialize(self, f):
self.tx.deserialize(f)
def serialize(self):
return self.tx.serialize()
def __repr__(self):
return "msg_tx(tx=%s)" % (repr(self.tx))
class msg_block:
__slots__ = ("block",)
msgtype = b"block"
def __init__(self, block=None):
if block is None:
self.block = CBlock()
else:
self.block = block
def deserialize(self, f):
self.block.deserialize(f)
def serialize(self):
return self.block.serialize()
def __repr__(self):
return "msg_block(block=%s)" % (repr(self.block))
# for cases where a user needs tighter control over what is sent over the wire
# note that the user must supply the name of the msgtype, and the data
class msg_generic:
__slots__ = ("data")
def __init__(self, msgtype, data=None):
self.msgtype = msgtype
self.data = data
def serialize(self):
return self.data
def __repr__(self):
return "msg_generic()"
class msg_getaddr:
__slots__ = ()
msgtype = b"getaddr"
def __init__(self):
pass
def deserialize(self, f):
pass
def serialize(self):
return b""
def __repr__(self):
return "msg_getaddr()"
class msg_ping:
__slots__ = ("nonce",)
msgtype = b"ping"
def __init__(self, nonce=0):
self.nonce = nonce
def deserialize(self, f):
self.nonce = struct.unpack("<Q", f.read(8))[0]
def serialize(self):
r = b""
r += struct.pack("<Q", self.nonce)
return r
def __repr__(self):
return "msg_ping(nonce=%08x)" % self.nonce
class msg_pong:
__slots__ = ("nonce",)
msgtype = b"pong"
def __init__(self, nonce=0):
self.nonce = nonce
def deserialize(self, f):
self.nonce = struct.unpack("<Q", f.read(8))[0]
def serialize(self):
r = b""
r += struct.pack("<Q", self.nonce)
return r
def __repr__(self):
return "msg_pong(nonce=%08x)" % self.nonce
class msg_mempool:
__slots__ = ()
msgtype = b"mempool"
def __init__(self):
pass
def deserialize(self, f):
pass
def serialize(self):
return b""
def __repr__(self):
return "msg_mempool()"
class msg_notfound:
__slots__ = ("vec", )
msgtype = b"notfound"
def __init__(self, vec=None):
self.vec = vec or []
def deserialize(self, f):
self.vec = deser_vector(f, CInv)
def serialize(self):
return ser_vector(self.vec)
def __repr__(self):
return "msg_notfound(vec=%s)" % (repr(self.vec))
class msg_sendheaders:
__slots__ = ()
msgtype = b"sendheaders"
def __init__(self):
pass
def deserialize(self, f):
pass
def serialize(self):
return b""
def __repr__(self):
return "msg_sendheaders()"
class msg_sendheaders2:
__slots__ = ()
msgtype = b"sendheaders2"
def __init__(self):
pass
def deserialize(self, f):
pass
def serialize(self):
return b""
def __repr__(self):
return "msg_sendheaders2()"
# getheaders message has
# number of entries
# vector of hashes
# hash_stop (hash of last desired block header, 0 to get as many as possible)
class msg_getheaders:
__slots__ = ("hashstop", "locator",)
msgtype = b"getheaders"
def __init__(self):
self.locator = CBlockLocator()
self.hashstop = 0
def deserialize(self, f):
self.locator = CBlockLocator()
self.locator.deserialize(f)
self.hashstop = deser_uint256(f)
def serialize(self):
r = b""
r += self.locator.serialize()
r += ser_uint256(self.hashstop)
return r
def __repr__(self):
return "msg_getheaders(locator=%s, stop=%064x)" \
% (repr(self.locator), self.hashstop)
# same as msg_getheaders, but to request the headers compressed
class msg_getheaders2:
__slots__ = ("hashstop", "locator",)
msgtype = b"getheaders2"
def __init__(self):
self.locator = CBlockLocator()
self.hashstop = 0
def deserialize(self, f):
self.locator = CBlockLocator()
self.locator.deserialize(f)
self.hashstop = deser_uint256(f)
def serialize(self):
r = b""
r += self.locator.serialize()
r += ser_uint256(self.hashstop)
return r
def __repr__(self):
return "msg_getheaders2(locator=%s, stop=%064x)" \
% (repr(self.locator), self.hashstop)
# headers message has
# <count> <vector of block headers>
class msg_headers:
__slots__ = ("headers",)
msgtype = b"headers"
def __init__(self, headers=None):
self.headers = headers if headers is not None else []
def deserialize(self, f):
# comment in dashd indicates these should be deserialized as blocks
blocks = deser_vector(f, CBlock)
for x in blocks:
self.headers.append(CBlockHeader(x))
def serialize(self):
blocks = [CBlock(x) for x in self.headers]
return ser_vector(blocks)
def __repr__(self):
return "msg_headers(headers=%s)" % repr(self.headers)
# headers message has
# <count> <vector of compressed block headers>
class msg_headers2:
__slots__ = ("headers",)
msgtype = b"headers2"
def __init__(self, headers=None):
self.headers = headers if headers is not None else []
def deserialize(self, f):
self.headers = deser_vector(f, CompressibleBlockHeader)
last_unique_versions = []
for idx in range(len(self.headers)):
self.headers[idx].uncompress(self.headers[:idx], last_unique_versions)
def serialize(self):
last_unique_versions = []
for idx in range(len(self.headers)):
self.headers[idx].compress(self.headers[:idx], last_unique_versions)
return ser_vector(self.headers)
def __repr__(self):
return "msg_headers2(headers=%s)" % repr(self.headers)
class msg_merkleblock:
__slots__ = ("merkleblock",)
msgtype = b"merkleblock"
def __init__(self, merkleblock=None):
if merkleblock is None:
self.merkleblock = CMerkleBlock()
else:
self.merkleblock = merkleblock
def deserialize(self, f):
self.merkleblock.deserialize(f)
def serialize(self):
return self.merkleblock.serialize()
def __repr__(self):
return "msg_merkleblock(merkleblock=%s)" % (repr(self.merkleblock))
class msg_filterload:
__slots__ = ("data", "nHashFuncs", "nTweak", "nFlags")
msgtype = b"filterload"
def __init__(self, data=b'00', nHashFuncs=0, nTweak=0, nFlags=0):
self.data = data
self.nHashFuncs = nHashFuncs
self.nTweak = nTweak
self.nFlags = nFlags
def deserialize(self, f):
self.data = deser_string(f)
self.nHashFuncs = struct.unpack("<I", f.read(4))[0]
self.nTweak = struct.unpack("<I", f.read(4))[0]
self.nFlags = struct.unpack("<B", f.read(1))[0]
def serialize(self):
r = b""
r += ser_string(self.data)
r += struct.pack("<I", self.nHashFuncs)
r += struct.pack("<I", self.nTweak)
r += struct.pack("<B", self.nFlags)
return r
def __repr__(self):
return "msg_filterload(data={}, nHashFuncs={}, nTweak={}, nFlags={})".format(
self.data, self.nHashFuncs, self.nTweak, self.nFlags)
class msg_filteradd:
__slots__ = ("data")
msgtype = b"filteradd"
def __init__(self, data):
self.data = data
def deserialize(self, f):
self.data = deser_string(f)
def serialize(self):
r = b""
r += ser_string(self.data)
return r
def __repr__(self):
return "msg_filteradd(data={})".format(self.data)
class msg_filterclear:
__slots__ = ()
msgtype = b"filterclear"
def __init__(self):
pass
def deserialize(self, f):
pass
def serialize(self):
return b""
def __repr__(self):
return "msg_filterclear()"
class msg_sendcmpct:
__slots__ = ("announce", "version")
msgtype = b"sendcmpct"
def __init__(self, announce=False, version=1):
self.announce = announce
self.version = version
def deserialize(self, f):
self.announce = struct.unpack("<?", f.read(1))[0]
self.version = struct.unpack("<Q", f.read(8))[0]
def serialize(self):
r = b""
r += struct.pack("<?", self.announce)
r += struct.pack("<Q", self.version)
return r
def __repr__(self):
return "msg_sendcmpct(announce=%s, version=%lu)" % (self.announce, self.version)
class msg_cmpctblock:
__slots__ = ("header_and_shortids",)
msgtype = b"cmpctblock"
def __init__(self, header_and_shortids = None):
self.header_and_shortids = header_and_shortids
def deserialize(self, f):
self.header_and_shortids = P2PHeaderAndShortIDs()
self.header_and_shortids.deserialize(f)
def serialize(self):
r = b""
r += self.header_and_shortids.serialize()
return r
def __repr__(self):
return "msg_cmpctblock(HeaderAndShortIDs=%s)" % repr(self.header_and_shortids)
class msg_getblocktxn:
__slots__ = ("block_txn_request",)
msgtype = b"getblocktxn"
def __init__(self):
self.block_txn_request = None
def deserialize(self, f):
self.block_txn_request = BlockTransactionsRequest()
self.block_txn_request.deserialize(f)
def serialize(self):
r = b""
r += self.block_txn_request.serialize()
return r
def __repr__(self):
return "msg_getblocktxn(block_txn_request=%s)" % (repr(self.block_txn_request))
class msg_blocktxn:
__slots__ = ("block_transactions",)
msgtype = b"blocktxn"
def __init__(self):
self.block_transactions = BlockTransactions()
def deserialize(self, f):
self.block_transactions.deserialize(f)
def serialize(self):
r = b""
r += self.block_transactions.serialize()
return r
def __repr__(self):
return "msg_blocktxn(block_transactions=%s)" % (repr(self.block_transactions))
class msg_getmnlistd:
__slots__ = ("baseBlockHash", "blockHash",)
msgtype = b"getmnlistd"
def __init__(self, baseBlockHash=0, blockHash=0):
self.baseBlockHash = baseBlockHash
self.blockHash = blockHash
def deserialize(self, f):
self.baseBlockHash = deser_uint256(f)
self.blockHash = deser_uint256(f)
def serialize(self):
r = b""
r += ser_uint256(self.baseBlockHash)
r += ser_uint256(self.blockHash)
return r
def __repr__(self):
return "msg_getmnlistd(baseBlockHash=%064x, blockHash=%064x)" % (self.baseBlockHash, self.blockHash)
QuorumId = namedtuple('QuorumId', ['llmqType', 'quorumHash'])
class msg_mnlistdiff:
__slots__ = ("baseBlockHash", "blockHash", "merkleProof", "cbTx", "nVersion", "deletedMNs", "mnList", "deletedQuorums", "newQuorums", "quorumsCLSigs")
msgtype = b"mnlistdiff"
def __init__(self):
self.baseBlockHash = 0
self.blockHash = 0
self.merkleProof = CPartialMerkleTree()
self.cbTx = None
self.nVersion = 0
self.deletedMNs = []
self.mnList = []
self.deletedQuorums = []
self.newQuorums = []
self.quorumsCLSigs = {}
def deserialize(self, f):
self.nVersion = struct.unpack("<H", f.read(2))[0]
self.baseBlockHash = deser_uint256(f)
self.blockHash = deser_uint256(f)
self.merkleProof.deserialize(f)
self.cbTx = CTransaction()
self.cbTx.deserialize(f)
self.cbTx.rehash()
self.deletedMNs = deser_uint256_vector(f)
self.mnList = []
for _ in range(deser_compact_size(f)):
e = CSimplifiedMNListEntry()
e.deserialize(f)
self.mnList.append(e)
self.deletedQuorums = []
for _ in range(deser_compact_size(f)):
llmqType = struct.unpack("<B", f.read(1))[0]
quorumHash = deser_uint256(f)
self.deletedQuorums.append(QuorumId(llmqType, quorumHash))
self.newQuorums = []
for _ in range(deser_compact_size(f)):
qc = CFinalCommitment()
qc.deserialize(f)
self.newQuorums.append(qc)
self.quorumsCLSigs = {}
for _ in range(deser_compact_size(f)):
signature = f.read(96)
idx_set = set()
for _ in range(deser_compact_size(f)):
set_element = struct.unpack('H', f.read(2))[0]
idx_set.add(set_element)
self.quorumsCLSigs[signature] = idx_set
def __repr__(self):
return "msg_mnlistdiff(baseBlockHash=%064x, blockHash=%064x)" % (self.baseBlockHash, self.blockHash)
class msg_clsig:
__slots__ = ("height", "blockHash", "sig",)
msgtype = b"clsig"
def __init__(self, height=0, blockHash=0, sig=b'\x00' * 96):
self.height = height
self.blockHash = blockHash
self.sig = sig
def deserialize(self, f):
self.height = struct.unpack('<i', f.read(4))[0]
self.blockHash = deser_uint256(f)
self.sig = f.read(96)
def serialize(self):
r = b""
r += struct.pack('<i', self.height)
r += ser_uint256(self.blockHash)
r += self.sig
return r
def __repr__(self):
return "msg_clsig(height=%d, blockHash=%064x)" % (self.height, self.blockHash)
class msg_isdlock:
__slots__ = ("nVersion", "inputs", "txid", "cycleHash", "sig")
msgtype = b"isdlock"
def __init__(self, nVersion=1, inputs=None, txid=0, cycleHash=0, sig=b'\x00' * 96):
self.nVersion = nVersion
self.inputs = inputs if inputs is not None else []
self.txid = txid
self.cycleHash = cycleHash
self.sig = sig
def deserialize(self, f):
self.nVersion = struct.unpack("<B", f.read(1))[0]
self.inputs = deser_vector(f, COutPoint)
self.txid = deser_uint256(f)
self.cycleHash = deser_uint256(f)
self.sig = f.read(96)
def serialize(self):
r = b""
r += struct.pack("<B", self.nVersion)
r += ser_vector(self.inputs)
r += ser_uint256(self.txid)
r += ser_uint256(self.cycleHash)
r += self.sig
return r
def __repr__(self):
return "msg_isdlock(nVersion=%d, inputs=%s, txid=%064x, cycleHash=%064x)" % \
(self.nVersion, repr(self.inputs), self.txid, self.cycleHash)
class msg_qsigshare:
__slots__ = ("sig_shares",)
msgtype = b"qsigshare"
def __init__(self, sig_shares=None):
self.sig_shares = sig_shares if sig_shares is not None else []
def deserialize(self, f):
self.sig_shares = deser_vector(f, CSigShare)
def serialize(self):
r = b""
r += ser_vector(self.sig_shares)
return r
def __repr__(self):
return "msg_qsigshare(sigShares=%d)" % (len(self.sig_shares))
class msg_qwatch:
__slots__ = ()
msgtype = b"qwatch"
def __init__(self):
pass
def deserialize(self, f):
pass
def serialize(self):
return b""
def __repr__(self):
return "msg_qwatch()"
class msg_qgetdata:
__slots__ = ("quorum_hash", "quorum_type", "data_mask", "protx_hash")
msgtype = b"qgetdata"
def __init__(self, quorum_hash=0, quorum_type=-1, data_mask=0, protx_hash=0):
self.quorum_hash = quorum_hash
self.quorum_type = quorum_type
self.data_mask = data_mask
self.protx_hash = protx_hash
def deserialize(self, f):
self.quorum_type = struct.unpack("<B", f.read(1))[0]
self.quorum_hash = deser_uint256(f)
self.data_mask = struct.unpack("<H", f.read(2))[0]
self.protx_hash = deser_uint256(f)
def serialize(self):
r = b""
r += struct.pack("<B", self.quorum_type)
r += ser_uint256(self.quorum_hash)
r += struct.pack("<H", self.data_mask)
r += ser_uint256(self.protx_hash)
return r
def __repr__(self):
return "msg_qgetdata(quorum_hash=%064x, quorum_type=%d, data_mask=%d, protx_hash=%064x)" % (
self.quorum_hash,
self.quorum_type,
self.data_mask,
self.protx_hash)
class msg_qdata:
__slots__ = ("quorum_hash", "quorum_type", "data_mask", "protx_hash", "error", "quorum_vvec", "enc_contributions",)
msgtype = b"qdata"
def __init__(self):
self.quorum_type = 0
self.quorum_hash = 0
self.data_mask = 0
self.protx_hash = 0
self.error = 0
self.quorum_vvec = list()
self.enc_contributions = list()
def deserialize(self, f):
self.quorum_type = struct.unpack("<B", f.read(1))[0]
self.quorum_hash = deser_uint256(f)
self.data_mask = struct.unpack("<H", f.read(2))[0]
self.protx_hash = deser_uint256(f)
self.error = struct.unpack("<B", f.read(1))[0]
if self.error == 0:
if self.data_mask & 0x01:
self.quorum_vvec = deser_vector(f, CBLSPublicKey)
if self.data_mask & 0x02:
self.enc_contributions = deser_vector(f, CBLSIESEncryptedSecretKey)
def serialize(self):
r = b""
r += struct.pack("<B", self.quorum_type)
r += ser_uint256(self.quorum_hash)
r += struct.pack("<H", self.data_mask)
r += ser_uint256(self.protx_hash)
r += struct.pack("<B", self.error)
if self.error == 0:
if self.data_mask & 0x01:
r += ser_vector(self.quorum_vvec)
if self.data_mask & 0x02:
r += ser_vector(self.enc_contributions)
return r
def __repr__(self):
return "msg_qdata(error=%d, quorum_vvec=%d, enc_contributions=%d)" % (self.error, len(self.quorum_vvec),
len(self.enc_contributions))
class msg_getcfilters:
__slots__ = ("filter_type", "start_height", "stop_hash")
msgtype = b"getcfilters"
def __init__(self, filter_type=None, start_height=None, stop_hash=None):
self.filter_type = filter_type
self.start_height = start_height
self.stop_hash = stop_hash
def deserialize(self, f):
self.filter_type = struct.unpack("<B", f.read(1))[0]
self.start_height = struct.unpack("<I", f.read(4))[0]
self.stop_hash = deser_uint256(f)
def serialize(self):
r = b""
r += struct.pack("<B", self.filter_type)
r += struct.pack("<I", self.start_height)
r += ser_uint256(self.stop_hash)
return r
def __repr__(self):
return "msg_getcfilters(filter_type={:#x}, start_height={}, stop_hash={:x})".format(
self.filter_type, self.start_height, self.stop_hash)
class msg_cfilter:
__slots__ = ("filter_type", "block_hash", "filter_data")
msgtype = b"cfilter"
def __init__(self, filter_type=None, block_hash=None, filter_data=None):
self.filter_type = filter_type
self.block_hash = block_hash
self.filter_data = filter_data
def deserialize(self, f):
self.filter_type = struct.unpack("<B", f.read(1))[0]
self.block_hash = deser_uint256(f)
self.filter_data = deser_string(f)
def serialize(self):
r = b""
r += struct.pack("<B", self.filter_type)
r += ser_uint256(self.block_hash)
r += ser_string(self.filter_data)
return r
def __repr__(self):
return "msg_cfilter(filter_type={:#x}, block_hash={:x})".format(
self.filter_type, self.block_hash)
class msg_getcfheaders:
__slots__ = ("filter_type", "start_height", "stop_hash")
msgtype = b"getcfheaders"
def __init__(self, filter_type=None, start_height=None, stop_hash=None):
self.filter_type = filter_type
self.start_height = start_height
self.stop_hash = stop_hash
def deserialize(self, f):
self.filter_type = struct.unpack("<B", f.read(1))[0]
self.start_height = struct.unpack("<I", f.read(4))[0]
self.stop_hash = deser_uint256(f)
def serialize(self):
r = b""
r += struct.pack("<B", self.filter_type)
r += struct.pack("<I", self.start_height)
r += ser_uint256(self.stop_hash)
return r
def __repr__(self):
return "msg_getcfheaders(filter_type={:#x}, start_height={}, stop_hash={:x})".format(
self.filter_type, self.start_height, self.stop_hash)
class msg_cfheaders:
__slots__ = ("filter_type", "stop_hash", "prev_header", "hashes")
msgtype = b"cfheaders"
def __init__(self, filter_type=None, stop_hash=None, prev_header=None, hashes=None):
self.filter_type = filter_type
self.stop_hash = stop_hash
self.prev_header = prev_header
self.hashes = hashes
def deserialize(self, f):
self.filter_type = struct.unpack("<B", f.read(1))[0]
self.stop_hash = deser_uint256(f)
self.prev_header = deser_uint256(f)
self.hashes = deser_uint256_vector(f)
def serialize(self):
r = b""
r += struct.pack("<B", self.filter_type)
r += ser_uint256(self.stop_hash)
r += ser_uint256(self.prev_header)
r += ser_uint256_vector(self.hashes)
return r
def __repr__(self):
return "msg_cfheaders(filter_type={:#x}, stop_hash={:x})".format(
self.filter_type, self.stop_hash)
class msg_getcfcheckpt:
__slots__ = ("filter_type", "stop_hash")
msgtype = b"getcfcheckpt"
def __init__(self, filter_type=None, stop_hash=None):
self.filter_type = filter_type
self.stop_hash = stop_hash
def deserialize(self, f):
self.filter_type = struct.unpack("<B", f.read(1))[0]
self.stop_hash = deser_uint256(f)
def serialize(self):
r = b""
r += struct.pack("<B", self.filter_type)
r += ser_uint256(self.stop_hash)
return r
def __repr__(self):
return "msg_getcfcheckpt(filter_type={:#x}, stop_hash={:x})".format(
self.filter_type, self.stop_hash)
class msg_cfcheckpt:
__slots__ = ("filter_type", "stop_hash", "headers")
msgtype = b"cfcheckpt"
def __init__(self, filter_type=None, stop_hash=None, headers=None):
self.filter_type = filter_type
self.stop_hash = stop_hash
self.headers = headers
def deserialize(self, f):
self.filter_type = struct.unpack("<B", f.read(1))[0]
self.stop_hash = deser_uint256(f)
self.headers = deser_uint256_vector(f)
def serialize(self):
r = b""
r += struct.pack("<B", self.filter_type)
r += ser_uint256(self.stop_hash)
r += ser_uint256_vector(self.headers)
return r
def __repr__(self):
return "msg_cfcheckpt(filter_type={:#x}, stop_hash={:x})".format(
self.filter_type, self.stop_hash)
class msg_sendtxrcncl:
__slots__ = ("version", "salt")
msgtype = b"sendtxrcncl"
def __init__(self):
self.version = 0
self.salt = 0
def deserialize(self, f):
self.version = struct.unpack("<I", f.read(4))[0]
self.salt = struct.unpack("<Q", f.read(8))[0]
def serialize(self):
r = b""
r += struct.pack("<I", self.version)
r += struct.pack("<Q", self.salt)
return r
def __repr__(self):
return "msg_sendtxrcncl(version=%lu, salt=%lu)" %\
(self.version, self.salt)
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