1470 lines
41 KiB
Python
1470 lines
41 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) 2010 ArtForz -- public domain half-a-node
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# Copyright (c) 2012 Jeff Garzik
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# Copyright (c) 2010-2019 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Bitcoin test framework primitive and message structures
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CBlock, CTransaction, CBlockHeader, CTxIn, CTxOut, etc....:
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data structures that should map to corresponding structures in
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bitcoin/primitives
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msg_block, msg_tx, msg_headers, etc.:
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data structures that represent network messages
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ser_*, deser_*: functions that handle serialization/deserialization.
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Classes use __slots__ to ensure extraneous attributes aren't accidentally added
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by tests, compromising their intended effect.
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"""
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from codecs import encode
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import copy
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import hashlib
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from io import BytesIO
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import random
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import socket
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import struct
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import time
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from test_framework.siphash import siphash256
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from test_framework.util import hex_str_to_bytes, assert_equal
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MIN_VERSION_SUPPORTED = 60001
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MY_VERSION = 70014 # past bip-31 for ping/pong
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MY_SUBVERSION = b"/python-mininode-tester:0.0.3/"
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MY_RELAY = 1 # from version 70001 onwards, fRelay should be appended to version messages (BIP37)
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MAX_LOCATOR_SZ = 101
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MAX_BLOCK_BASE_SIZE = 2000000
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COIN = 100000000 # 1 btc in satoshis
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BIP125_SEQUENCE_NUMBER = 0xfffffffd # Sequence number that is BIP 125 opt-in and BIP 68-opt-out
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NODE_NETWORK = (1 << 0)
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NODE_GETUTXO = (1 << 1)
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NODE_BLOOM = (1 << 2)
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NODE_WITNESS = (1 << 3)
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NODE_NETWORK_LIMITED = (1 << 10)
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MSG_TX = 1
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MSG_BLOCK = 2
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MSG_WITNESS_FLAG = 1 << 30
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MSG_TYPE_MASK = 0xffffffff >> 2
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# Serialization/deserialization tools
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def sha256(s):
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return hashlib.new('sha256', s).digest()
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def hash256(s):
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return sha256(sha256(s))
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def hash160(s):
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return hashlib.new('ripemd160', sha256(s)).digest()
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def ser_compact_size(l):
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r = b""
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if l < 253:
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r = struct.pack("B", l)
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elif l < 0x10000:
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r = struct.pack("<BH", 253, l)
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elif l < 0x100000000:
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r = struct.pack("<BI", 254, l)
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else:
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r = struct.pack("<BQ", 255, l)
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return r
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def deser_compact_size(f):
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nit = struct.unpack("<B", f.read(1))[0]
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if nit == 253:
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nit = struct.unpack("<H", f.read(2))[0]
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elif nit == 254:
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nit = struct.unpack("<I", f.read(4))[0]
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elif nit == 255:
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nit = struct.unpack("<Q", f.read(8))[0]
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return nit
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def deser_string(f):
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nit = deser_compact_size(f)
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return f.read(nit)
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def ser_string(s):
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return ser_compact_size(len(s)) + s
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def deser_uint256(f):
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r = 0
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for i in range(8):
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t = struct.unpack("<I", f.read(4))[0]
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r += t << (i * 32)
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return r
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def ser_uint256(u):
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rs = b""
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for i in range(8):
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rs += struct.pack("<I", u & 0xFFFFFFFF)
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u >>= 32
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return rs
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def uint256_from_str(s):
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r = 0
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t = struct.unpack("<IIIIIIII", s[:32])
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for i in range(8):
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r += t[i] << (i * 32)
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return r
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def uint256_from_compact(c):
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nbytes = (c >> 24) & 0xFF
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v = (c & 0xFFFFFF) << (8 * (nbytes - 3))
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return v
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def deser_vector(f, c):
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nit = deser_compact_size(f)
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r = []
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for i in range(nit):
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t = c()
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t.deserialize(f)
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r.append(t)
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return r
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def lbryPOW(i):
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h512 = hashlib.new('sha512', ser_uint256(i)).digest()
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m = len(h512) // 2
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s = hash256(ripemd160(h512[:m]) + ripemd160(h512[m:]))
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return uint256_from_str(s)
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# ser_function_name: Allow for an alternate serialization function on the
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# entries in the vector (we use this for serializing the vector of transactions
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# for a witness block).
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def ser_vector(l, ser_function_name=None):
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r = ser_compact_size(len(l))
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for i in l:
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if ser_function_name:
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r += getattr(i, ser_function_name)()
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else:
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r += i.serialize()
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return r
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def deser_uint256_vector(f):
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nit = deser_compact_size(f)
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r = []
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for i in range(nit):
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t = deser_uint256(f)
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r.append(t)
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return r
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def ser_uint256_vector(l):
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r = ser_compact_size(len(l))
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for i in l:
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r += ser_uint256(i)
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return r
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def deser_string_vector(f):
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nit = deser_compact_size(f)
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r = []
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for i in range(nit):
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t = deser_string(f)
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r.append(t)
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return r
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def ser_string_vector(l):
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r = ser_compact_size(len(l))
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for sv in l:
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r += ser_string(sv)
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return r
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# Deserialize from a hex string representation (eg from RPC)
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def FromHex(obj, hex_string):
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obj.deserialize(BytesIO(hex_str_to_bytes(hex_string)))
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return obj
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# Convert a binary-serializable object to hex (eg for submission via RPC)
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def ToHex(obj):
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return obj.serialize().hex()
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# Objects that map to lbrycrdd objects, which can be serialized/deserialized
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class CAddress:
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__slots__ = ("ip", "nServices", "pchReserved", "port", "time")
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def __init__(self):
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self.time = 0
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self.nServices = 1
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self.pchReserved = b"\x00" * 10 + b"\xff" * 2
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self.ip = "0.0.0.0"
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self.port = 0
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def deserialize(self, f, with_time=True):
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if with_time:
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self.time = struct.unpack("<i", f.read(4))[0]
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self.nServices = struct.unpack("<Q", f.read(8))[0]
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self.pchReserved = f.read(12)
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self.ip = socket.inet_ntoa(f.read(4))
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self.port = struct.unpack(">H", f.read(2))[0]
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def serialize(self, with_time=True):
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r = b""
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if with_time:
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r += struct.pack("<i", self.time)
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r += struct.pack("<Q", self.nServices)
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r += self.pchReserved
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r += socket.inet_aton(self.ip)
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r += struct.pack(">H", self.port)
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return r
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def __repr__(self):
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return "CAddress(nServices=%i ip=%s port=%i)" % (self.nServices,
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self.ip, self.port)
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class CInv:
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__slots__ = ("hash", "type")
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typemap = {
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0: "Error",
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1: "TX",
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2: "Block",
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1|MSG_WITNESS_FLAG: "WitnessTx",
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2|MSG_WITNESS_FLAG : "WitnessBlock",
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4: "CompactBlock"
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}
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def __init__(self, t=0, h=0):
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self.type = t
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self.hash = h
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def deserialize(self, f):
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self.type = struct.unpack("<i", f.read(4))[0]
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self.hash = deser_uint256(f)
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def serialize(self):
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r = b""
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r += struct.pack("<i", self.type)
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r += ser_uint256(self.hash)
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return r
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def __repr__(self):
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return "CInv(type=%s hash=%064x)" \
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% (self.typemap[self.type], self.hash)
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class CBlockLocator:
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__slots__ = ("nVersion", "vHave")
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def __init__(self):
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self.nVersion = MY_VERSION
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self.vHave = []
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def deserialize(self, f):
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self.nVersion = struct.unpack("<i", f.read(4))[0]
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self.vHave = deser_uint256_vector(f)
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def serialize(self):
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r = b""
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r += struct.pack("<i", self.nVersion)
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r += ser_uint256_vector(self.vHave)
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return r
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def __repr__(self):
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return "CBlockLocator(nVersion=%i vHave=%s)" \
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% (self.nVersion, repr(self.vHave))
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class COutPoint:
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__slots__ = ("hash", "n")
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def __init__(self, hash=0, n=0):
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self.hash = hash
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self.n = n
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def deserialize(self, f):
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self.hash = deser_uint256(f)
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self.n = struct.unpack("<I", f.read(4))[0]
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def serialize(self):
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r = b""
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r += ser_uint256(self.hash)
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r += struct.pack("<I", self.n)
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return r
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def __repr__(self):
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return "COutPoint(hash=%064x n=%i)" % (self.hash, self.n)
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class CTxIn:
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__slots__ = ("nSequence", "prevout", "scriptSig")
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def __init__(self, outpoint=None, scriptSig=b"", nSequence=0):
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if outpoint is None:
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self.prevout = COutPoint()
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else:
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self.prevout = outpoint
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self.scriptSig = scriptSig
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self.nSequence = nSequence
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def deserialize(self, f):
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self.prevout = COutPoint()
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self.prevout.deserialize(f)
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self.scriptSig = deser_string(f)
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self.nSequence = struct.unpack("<I", f.read(4))[0]
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def serialize(self):
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r = b""
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r += self.prevout.serialize()
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r += ser_string(self.scriptSig)
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r += struct.pack("<I", self.nSequence)
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return r
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def __repr__(self):
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return "CTxIn(prevout=%s scriptSig=%s nSequence=%i)" \
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% (repr(self.prevout), self.scriptSig.hex(),
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self.nSequence)
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class CTxOut:
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__slots__ = ("nValue", "scriptPubKey")
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def __init__(self, nValue=0, scriptPubKey=b""):
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self.nValue = nValue
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self.scriptPubKey = scriptPubKey
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def deserialize(self, f):
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self.nValue = struct.unpack("<q", f.read(8))[0]
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self.scriptPubKey = deser_string(f)
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def serialize(self):
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r = b""
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r += struct.pack("<q", self.nValue)
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r += ser_string(self.scriptPubKey)
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return r
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def __repr__(self):
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return "CTxOut(nValue=%i.%08i scriptPubKey=%s)" \
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% (self.nValue // COIN, self.nValue % COIN,
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self.scriptPubKey.hex())
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class CScriptWitness:
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__slots__ = ("stack",)
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def __init__(self):
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# stack is a vector of strings
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self.stack = []
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def __repr__(self):
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return "CScriptWitness(%s)" % \
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(",".join([x.hex() for x in self.stack]))
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def is_null(self):
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if self.stack:
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return False
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return True
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class CTxInWitness:
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__slots__ = ("scriptWitness",)
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def __init__(self):
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self.scriptWitness = CScriptWitness()
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def deserialize(self, f):
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self.scriptWitness.stack = deser_string_vector(f)
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def serialize(self):
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return ser_string_vector(self.scriptWitness.stack)
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def __repr__(self):
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return repr(self.scriptWitness)
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def is_null(self):
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return self.scriptWitness.is_null()
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class CTxWitness:
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__slots__ = ("vtxinwit",)
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def __init__(self):
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self.vtxinwit = []
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def deserialize(self, f):
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for i in range(len(self.vtxinwit)):
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self.vtxinwit[i].deserialize(f)
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def serialize(self):
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r = b""
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# This is different than the usual vector serialization --
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# we omit the length of the vector, which is required to be
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# the same length as the transaction's vin vector.
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for x in self.vtxinwit:
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r += x.serialize()
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return r
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def __repr__(self):
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return "CTxWitness(%s)" % \
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(';'.join([repr(x) for x in self.vtxinwit]))
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def is_null(self):
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for x in self.vtxinwit:
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if not x.is_null():
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return False
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return True
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class CTransaction:
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__slots__ = ("hash", "nLockTime", "nVersion", "sha256", "vin", "vout",
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"wit")
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def __init__(self, tx=None):
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if tx is None:
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self.nVersion = 1
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self.vin = []
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self.vout = []
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self.wit = CTxWitness()
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self.nLockTime = 0
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self.sha256 = None
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self.hash = None
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else:
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self.nVersion = tx.nVersion
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self.vin = copy.deepcopy(tx.vin)
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self.vout = copy.deepcopy(tx.vout)
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self.nLockTime = tx.nLockTime
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self.sha256 = tx.sha256
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self.hash = tx.hash
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self.wit = copy.deepcopy(tx.wit)
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def deserialize(self, f):
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self.nVersion = struct.unpack("<i", f.read(4))[0]
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self.vin = deser_vector(f, CTxIn)
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flags = 0
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if len(self.vin) == 0:
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flags = struct.unpack("<B", f.read(1))[0]
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# Not sure why flags can't be zero, but this
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# matches the implementation in lbrycrdd
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if (flags != 0):
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self.vin = deser_vector(f, CTxIn)
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self.vout = deser_vector(f, CTxOut)
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else:
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self.vout = deser_vector(f, CTxOut)
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if flags != 0:
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self.wit.vtxinwit = [CTxInWitness() for i in range(len(self.vin))]
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self.wit.deserialize(f)
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else:
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self.wit = CTxWitness()
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self.nLockTime = struct.unpack("<I", f.read(4))[0]
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self.sha256 = None
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self.hash = None
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def serialize_without_witness(self):
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r = b""
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r += struct.pack("<i", self.nVersion)
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r += ser_vector(self.vin)
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r += ser_vector(self.vout)
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r += struct.pack("<I", self.nLockTime)
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return r
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# Only serialize with witness when explicitly called for
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def serialize_with_witness(self):
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flags = 0
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if not self.wit.is_null():
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flags |= 1
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r = b""
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r += struct.pack("<i", self.nVersion)
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if flags:
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dummy = []
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r += ser_vector(dummy)
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r += struct.pack("<B", flags)
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r += ser_vector(self.vin)
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r += ser_vector(self.vout)
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if flags & 1:
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if (len(self.wit.vtxinwit) != len(self.vin)):
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# vtxinwit must have the same length as vin
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self.wit.vtxinwit = self.wit.vtxinwit[:len(self.vin)]
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for i in range(len(self.wit.vtxinwit), len(self.vin)):
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self.wit.vtxinwit.append(CTxInWitness())
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r += self.wit.serialize()
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r += struct.pack("<I", self.nLockTime)
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return r
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# Regular serialization is with witness -- must explicitly
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# call serialize_without_witness to exclude witness data.
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def serialize(self):
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return self.serialize_with_witness()
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# Recalculate the txid (transaction hash without witness)
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def rehash(self):
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self.sha256 = None
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self.calc_sha256()
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return self.hash
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# We will only cache the serialization without witness in
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# self.sha256 and self.hash -- those are expected to be the txid.
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def calc_sha256(self, with_witness=False):
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if with_witness:
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# Don't cache the result, just return it
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return uint256_from_str(hash256(self.serialize_with_witness()))
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if self.sha256 is None:
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self.sha256 = uint256_from_str(hash256(self.serialize_without_witness()))
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self.hash = encode(hash256(self.serialize_without_witness())[::-1], 'hex_codec').decode('ascii')
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def is_valid(self):
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self.calc_sha256()
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for tout in self.vout:
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if tout.nValue < 0 or tout.nValue > 21000000 * COIN:
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return False
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return True
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def __repr__(self):
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return "CTransaction(nVersion=%i vin=%s vout=%s wit=%s nLockTime=%i)" \
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% (self.nVersion, repr(self.vin), repr(self.vout), repr(self.wit), self.nLockTime)
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|
|
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.hashClaimTrie = header.hashClaimTrie
|
|
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 = 5
|
|
self.hashPrevBlock = 0
|
|
self.hashMerkleRoot = 0
|
|
self.hashClaimTrie = 1
|
|
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.hashClaimTrie = 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 += ser_uint256(self.hashClaimTrie)
|
|
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 += ser_uint256(self.hashClaimTrie)
|
|
r += struct.pack("<I", self.nTime)
|
|
r += struct.pack("<I", self.nBits)
|
|
r += struct.pack("<I", self.nNonce)
|
|
self.sha256 = uint256_from_str(hash256(r))
|
|
self.hash = encode(hash256(r)[::-1], 'hex_codec').decode('ascii')
|
|
|
|
def rehash(self):
|
|
self.sha256 = None
|
|
self.calc_sha256()
|
|
return self.sha256
|
|
|
|
def __repr__(self):
|
|
return "CBlockHeader(nVersion=%i hashPrevBlock=%064x hashMerkleRoot=%064x hashClaimTrie=%064x nTime=%s nBits=%08x nNonce=%08x)" \
|
|
% (self.nVersion, self.hashPrevBlock, self.hashMerkleRoot, self.hashClaimTrie,
|
|
time.ctime(self.nTime), self.nBits, self.nNonce)
|
|
|
|
BLOCK_HEADER_SIZE = len(CBlockHeader().serialize())
|
|
assert_equal(BLOCK_HEADER_SIZE, 80 + 32)
|
|
|
|
class CBlock(CBlockHeader):
|
|
__slots__ = ("vtx",)
|
|
|
|
def __init__(self, header=None):
|
|
super(CBlock, self).__init__(header)
|
|
self.vtx = []
|
|
|
|
def deserialize(self, f):
|
|
super(CBlock, self).deserialize(f)
|
|
self.vtx = deser_vector(f, CTransaction)
|
|
|
|
def serialize(self, with_witness=True):
|
|
r = b""
|
|
r += super(CBlock, self).serialize()
|
|
if with_witness:
|
|
r += ser_vector(self.vtx, "serialize_with_witness")
|
|
else:
|
|
r += ser_vector(self.vtx, "serialize_without_witness")
|
|
return r
|
|
|
|
# Calculate the merkle root given a vector of transaction hashes
|
|
@classmethod
|
|
def get_merkle_root(cls, 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 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)
|
|
if lbryPOW(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 lbryPOW(self.sha256) > target:
|
|
self.nNonce += 1
|
|
self.rehash()
|
|
|
|
def __repr__(self):
|
|
return "CBlock(nVersion=%i hashPrevBlock=%064x hashMerkleRoot=%064x hashClaimTrie=%064x nTime=%s nBits=%08x nNonce=%08x vtx=%s)" \
|
|
% (self.nVersion, self.hashPrevBlock, self.hashMerkleRoot, self.hashClaimTrie,
|
|
time.ctime(self.nTime), self.nBits, self.nNonce, repr(self.vtx))
|
|
|
|
|
|
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, with_witness=True):
|
|
r = b""
|
|
r += ser_compact_size(self.index)
|
|
if with_witness:
|
|
r += self.tx.serialize_with_witness()
|
|
else:
|
|
r += self.tx.serialize_without_witness()
|
|
return r
|
|
|
|
def serialize_without_witness(self):
|
|
return self.serialize(with_witness=False)
|
|
|
|
def serialize_with_witness(self):
|
|
return self.serialize(with_witness=True)
|
|
|
|
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 i 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)
|
|
|
|
# When using version 2 compact blocks, we must serialize with_witness.
|
|
def serialize(self, with_witness=False):
|
|
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]
|
|
if with_witness:
|
|
r += ser_vector(self.prefilled_txn, "serialize_with_witness")
|
|
else:
|
|
r += ser_vector(self.prefilled_txn, "serialize_without_witness")
|
|
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))
|
|
|
|
|
|
# P2P version of the above that will use witness serialization (for compact
|
|
# block version 2)
|
|
class P2PHeaderAndShortWitnessIDs(P2PHeaderAndShortIDs):
|
|
__slots__ = ()
|
|
def serialize(self):
|
|
return super(P2PHeaderAndShortWitnessIDs, self).serialize(with_witness=True)
|
|
|
|
# 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", "use_witness")
|
|
|
|
def __init__(self, p2pheaders_and_shortids = None):
|
|
self.header = CBlockHeader()
|
|
self.nonce = 0
|
|
self.shortids = []
|
|
self.prefilled_txn = []
|
|
self.use_witness = False
|
|
|
|
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):
|
|
if self.use_witness:
|
|
ret = P2PHeaderAndShortWitnessIDs()
|
|
else:
|
|
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 ]
|
|
|
|
# Version 2 compact blocks use wtxid in shortids (rather than txid)
|
|
def initialize_from_block(self, block, nonce=0, prefill_list=None, use_witness=False):
|
|
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 = []
|
|
self.use_witness = use_witness
|
|
[k0, k1] = self.get_siphash_keys()
|
|
for i in range(len(block.vtx)):
|
|
if i not in prefill_list:
|
|
tx_hash = block.vtx[i].sha256
|
|
if use_witness:
|
|
tx_hash = block.vtx[i].calc_sha256(with_witness=True)
|
|
self.shortids.append(calculate_shortid(k0, k1, tx_hash))
|
|
|
|
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 i 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, with_witness=True):
|
|
r = b""
|
|
r += ser_uint256(self.blockhash)
|
|
if with_witness:
|
|
r += ser_vector(self.transactions, "serialize_with_witness")
|
|
else:
|
|
r += ser_vector(self.transactions, "serialize_without_witness")
|
|
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.vHash = []
|
|
self.vBits = []
|
|
|
|
def deserialize(self, f):
|
|
self.nTransactions = struct.unpack("<i", f.read(4))[0]
|
|
self.vHash = deser_uint256_vector(f)
|
|
vBytes = deser_string(f)
|
|
self.vBits = []
|
|
for i in range(len(vBytes) * 8):
|
|
self.vBits.append(vBytes[i//8] & (1 << (i % 8)) != 0)
|
|
|
|
def serialize(self):
|
|
r = b""
|
|
r += struct.pack("<i", self.nTransactions)
|
|
r += ser_uint256_vector(self.vHash)
|
|
vBytesArray = bytearray([0x00] * ((len(self.vBits) + 7)//8))
|
|
for i in range(len(self.vBits)):
|
|
vBytesArray[i // 8] |= self.vBits[i] << (i % 8)
|
|
r += ser_string(bytes(vBytesArray))
|
|
return r
|
|
|
|
def __repr__(self):
|
|
return "CPartialMerkleTree(nTransactions=%d, vHash=%s, vBits=%s)" % (self.nTransactions, repr(self.vHash), repr(self.vBits))
|
|
|
|
|
|
class CMerkleBlock:
|
|
__slots__ = ("header", "txn")
|
|
|
|
def __init__(self):
|
|
self.header = CBlockHeader()
|
|
self.txn = CPartialMerkleTree()
|
|
|
|
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))
|
|
|
|
|
|
# Objects that correspond to messages on the wire
|
|
class msg_version:
|
|
__slots__ = ("addrFrom", "addrTo", "nNonce", "nRelay", "nServices",
|
|
"nStartingHeight", "nTime", "nVersion", "strSubVer")
|
|
command = b"version"
|
|
|
|
def __init__(self):
|
|
self.nVersion = MY_VERSION
|
|
self.nServices = NODE_NETWORK | NODE_WITNESS
|
|
self.nTime = int(time.time())
|
|
self.addrTo = CAddress()
|
|
self.addrFrom = CAddress()
|
|
self.nNonce = random.getrandbits(64)
|
|
self.strSubVer = MY_SUBVERSION
|
|
self.nStartingHeight = -1
|
|
self.nRelay = MY_RELAY
|
|
|
|
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, False)
|
|
|
|
self.addrFrom = CAddress()
|
|
self.addrFrom.deserialize(f, False)
|
|
self.nNonce = struct.unpack("<Q", f.read(8))[0]
|
|
self.strSubVer = deser_string(f)
|
|
|
|
self.nStartingHeight = struct.unpack("<i", f.read(4))[0]
|
|
|
|
if self.nVersion >= 70001:
|
|
# Relay field is optional for version 70001 onwards
|
|
try:
|
|
self.nRelay = struct.unpack("<b", f.read(1))[0]
|
|
except:
|
|
self.nRelay = 0
|
|
else:
|
|
self.nRelay = 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(False)
|
|
r += self.addrFrom.serialize(False)
|
|
r += struct.pack("<Q", self.nNonce)
|
|
r += ser_string(self.strSubVer)
|
|
r += struct.pack("<i", self.nStartingHeight)
|
|
r += struct.pack("<b", self.nRelay)
|
|
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 nRelay=%i)' \
|
|
% (self.nVersion, self.nServices, time.ctime(self.nTime),
|
|
repr(self.addrTo), repr(self.addrFrom), self.nNonce,
|
|
self.strSubVer, self.nStartingHeight, self.nRelay)
|
|
|
|
|
|
class msg_verack:
|
|
__slots__ = ()
|
|
command = 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",)
|
|
command = 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_inv:
|
|
__slots__ = ("inv",)
|
|
command = 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",)
|
|
command = 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")
|
|
command = 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",)
|
|
command = b"tx"
|
|
|
|
def __init__(self, tx=CTransaction()):
|
|
self.tx = tx
|
|
|
|
def deserialize(self, f):
|
|
self.tx.deserialize(f)
|
|
|
|
def serialize(self):
|
|
return self.tx.serialize_without_witness()
|
|
|
|
def __repr__(self):
|
|
return "msg_tx(tx=%s)" % (repr(self.tx))
|
|
|
|
|
|
class msg_witness_tx(msg_tx):
|
|
__slots__ = ()
|
|
|
|
def serialize(self):
|
|
return self.tx.serialize_with_witness()
|
|
|
|
|
|
class msg_block:
|
|
__slots__ = ("block",)
|
|
command = 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 command, and the data
|
|
class msg_generic:
|
|
__slots__ = ("command", "data")
|
|
|
|
def __init__(self, command, data=None):
|
|
self.command = command
|
|
self.data = data
|
|
|
|
def serialize(self):
|
|
return self.data
|
|
|
|
def __repr__(self):
|
|
return "msg_generic()"
|
|
|
|
|
|
class msg_no_witness_block(msg_block):
|
|
__slots__ = ()
|
|
def serialize(self):
|
|
return self.block.serialize(with_witness=False)
|
|
|
|
|
|
class msg_getaddr:
|
|
__slots__ = ()
|
|
command = 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",)
|
|
command = 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",)
|
|
command = 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__ = ()
|
|
command = 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", )
|
|
command = 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__ = ()
|
|
command = b"sendheaders"
|
|
|
|
def __init__(self):
|
|
pass
|
|
|
|
def deserialize(self, f):
|
|
pass
|
|
|
|
def serialize(self):
|
|
return b""
|
|
|
|
def __repr__(self):
|
|
return "msg_sendheaders()"
|
|
|
|
|
|
# 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",)
|
|
command = 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)
|
|
|
|
|
|
# headers message has
|
|
# <count> <vector of block headers>
|
|
class msg_headers:
|
|
__slots__ = ("headers",)
|
|
command = b"headers"
|
|
|
|
def __init__(self, headers=None):
|
|
self.headers = headers if headers is not None else []
|
|
|
|
def deserialize(self, f):
|
|
# comment in lbrycrdd 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)
|
|
|
|
|
|
class msg_reject:
|
|
__slots__ = ("code", "data", "message", "reason")
|
|
command = b"reject"
|
|
REJECT_MALFORMED = 1
|
|
|
|
def __init__(self):
|
|
self.message = b""
|
|
self.code = 0
|
|
self.reason = b""
|
|
self.data = 0
|
|
|
|
def deserialize(self, f):
|
|
self.message = deser_string(f)
|
|
self.code = struct.unpack("<B", f.read(1))[0]
|
|
self.reason = deser_string(f)
|
|
if (self.code != self.REJECT_MALFORMED and
|
|
(self.message == b"block" or self.message == b"tx")):
|
|
self.data = deser_uint256(f)
|
|
|
|
def serialize(self):
|
|
r = ser_string(self.message)
|
|
r += struct.pack("<B", self.code)
|
|
r += ser_string(self.reason)
|
|
if (self.code != self.REJECT_MALFORMED and
|
|
(self.message == b"block" or self.message == b"tx")):
|
|
r += ser_uint256(self.data)
|
|
return r
|
|
|
|
def __repr__(self):
|
|
return "msg_reject: %s %d %s [%064x]" \
|
|
% (self.message, self.code, self.reason, self.data)
|
|
|
|
|
|
class msg_feefilter:
|
|
__slots__ = ("feerate",)
|
|
command = b"feefilter"
|
|
|
|
def __init__(self, feerate=0):
|
|
self.feerate = feerate
|
|
|
|
def deserialize(self, f):
|
|
self.feerate = struct.unpack("<Q", f.read(8))[0]
|
|
|
|
def serialize(self):
|
|
r = b""
|
|
r += struct.pack("<Q", self.feerate)
|
|
return r
|
|
|
|
def __repr__(self):
|
|
return "msg_feefilter(feerate=%08x)" % self.feerate
|
|
|
|
|
|
class msg_sendcmpct:
|
|
__slots__ = ("announce", "version")
|
|
command = b"sendcmpct"
|
|
|
|
def __init__(self):
|
|
self.announce = False
|
|
self.version = 1
|
|
|
|
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",)
|
|
command = 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",)
|
|
command = 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",)
|
|
command = 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_no_witness_blocktxn(msg_blocktxn):
|
|
__slots__ = ()
|
|
|
|
def serialize(self):
|
|
return self.block_transactions.serialize(with_witness=False)
|