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Diffstat (limited to 'test/functional/test_framework/messages.py')
| -rw-r--r-- | test/functional/test_framework/messages.py | 1304 |
1 files changed, 1304 insertions, 0 deletions
diff --git a/test/functional/test_framework/messages.py b/test/functional/test_framework/messages.py new file mode 100644 index 0000000000..2ab1bdac0f --- /dev/null +++ b/test/functional/test_framework/messages.py @@ -0,0 +1,1304 @@ +#!/usr/bin/env python3 +# Copyright (c) 2010 ArtForz -- public domain half-a-node +# Copyright (c) 2012 Jeff Garzik +# Copyright (c) 2010-2017 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 strcutures + +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.""" +from codecs import encode +import copy +import hashlib +from io import BytesIO +import random +import socket +import struct +import time + +from test_framework.siphash import siphash256 +from test_framework.util import hex_str_to_bytes, bytes_to_hex_str + +MIN_VERSION_SUPPORTED = 60001 +MY_VERSION = 70014 # past bip-31 for ping/pong +MY_SUBVERSION = b"/python-mininode-tester:0.0.3/" +MY_RELAY = 1 # from version 70001 onwards, fRelay should be appended to version messages (BIP37) + +MAX_INV_SZ = 50000 +MAX_BLOCK_BASE_SIZE = 1000000 + +COIN = 100000000 # 1 btc in satoshis + +NODE_NETWORK = (1 << 0) +# NODE_GETUTXO = (1 << 1) +# NODE_BLOOM = (1 << 2) +NODE_WITNESS = (1 << 3) +NODE_UNSUPPORTED_SERVICE_BIT_5 = (1 << 5) +NODE_UNSUPPORTED_SERVICE_BIT_7 = (1 << 7) + +# Serialization/deserialization tools +def sha256(s): + return hashlib.new('sha256', s).digest() + +def ripemd160(s): + return hashlib.new('ripemd160', s).digest() + +def hash256(s): + return sha256(sha256(s)) + +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): + r = 0 + for i in range(8): + t = struct.unpack("<I", f.read(4))[0] + r += t << (i * 32) + return r + + +def ser_uint256(u): + rs = b"" + for i in range(8): + rs += struct.pack("<I", u & 0xFFFFFFFF) + u >>= 32 + return rs + + +def uint256_from_str(s): + r = 0 + t = struct.unpack("<IIIIIIII", s[:32]) + for i in range(8): + r += t[i] << (i * 32) + return r + + +def uint256_from_compact(c): + nbytes = (c >> 24) & 0xFF + v = (c & 0xFFFFFF) << (8 * (nbytes - 3)) + return v + + +def deser_vector(f, c): + nit = deser_compact_size(f) + r = [] + for i in range(nit): + t = c() + 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 the vector of transactions +# for a witness block). +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 i 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_string_vector(f): + nit = deser_compact_size(f) + r = [] + for i in range(nit): + t = deser_string(f) + r.append(t) + return r + + +def ser_string_vector(l): + r = ser_compact_size(len(l)) + for sv in l: + r += ser_string(sv) + return r + + +# Deserialize from a hex string representation (eg from RPC) +def FromHex(obj, hex_string): + obj.deserialize(BytesIO(hex_str_to_bytes(hex_string))) + return obj + +# Convert a binary-serializable object to hex (eg for submission via RPC) +def ToHex(obj): + return bytes_to_hex_str(obj.serialize()) + +# Objects that map to bitcoind objects, which can be serialized/deserialized + +class CAddress(): + def __init__(self): + self.nServices = 1 + self.pchReserved = b"\x00" * 10 + b"\xff" * 2 + self.ip = "0.0.0.0" + self.port = 0 + + def deserialize(self, f): + self.nServices = struct.unpack("<Q", f.read(8))[0] + self.pchReserved = f.read(12) + self.ip = socket.inet_ntoa(f.read(4)) + self.port = struct.unpack(">H", f.read(2))[0] + + def serialize(self): + r = b"" + r += struct.pack("<Q", self.nServices) + r += self.pchReserved + r += socket.inet_aton(self.ip) + r += struct.pack(">H", self.port) + return r + + def __repr__(self): + return "CAddress(nServices=%i ip=%s port=%i)" % (self.nServices, + self.ip, self.port) + +MSG_WITNESS_FLAG = 1<<30 + +class CInv(): + typemap = { + 0: "Error", + 1: "TX", + 2: "Block", + 1|MSG_WITNESS_FLAG: "WitnessTx", + 2|MSG_WITNESS_FLAG : "WitnessBlock", + 4: "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[self.type], self.hash) + + +class CBlockLocator(): + def __init__(self): + self.nVersion = MY_VERSION + self.vHave = [] + + def deserialize(self, f): + self.nVersion = struct.unpack("<i", f.read(4))[0] + self.vHave = deser_uint256_vector(f) + + def serialize(self): + r = b"" + r += struct.pack("<i", self.nVersion) + r += ser_uint256_vector(self.vHave) + return r + + def __repr__(self): + return "CBlockLocator(nVersion=%i vHave=%s)" \ + % (self.nVersion, repr(self.vHave)) + + +class COutPoint(): + def __init__(self, hash=0, n=0): + 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(): + 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), bytes_to_hex_str(self.scriptSig), + self.nSequence) + + +class CTxOut(): + 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, + bytes_to_hex_str(self.scriptPubKey)) + + +class CScriptWitness(): + def __init__(self): + # stack is a vector of strings + self.stack = [] + + def __repr__(self): + return "CScriptWitness(%s)" % \ + (",".join([bytes_to_hex_str(x) for x in self.stack])) + + def is_null(self): + if self.stack: + return False + return True + + +class CTxInWitness(): + def __init__(self): + self.scriptWitness = CScriptWitness() + + def deserialize(self, f): + self.scriptWitness.stack = deser_string_vector(f) + + def serialize(self): + return ser_string_vector(self.scriptWitness.stack) + + def __repr__(self): + return repr(self.scriptWitness) + + def is_null(self): + return self.scriptWitness.is_null() + + +class CTxWitness(): + def __init__(self): + self.vtxinwit = [] + + def deserialize(self, f): + for i in range(len(self.vtxinwit)): + self.vtxinwit[i].deserialize(f) + + def serialize(self): + r = b"" + # This is different than the usual vector serialization -- + # we omit the length of the vector, which is required to be + # the same length as the transaction's vin vector. + for x in self.vtxinwit: + r += x.serialize() + return r + + def __repr__(self): + return "CTxWitness(%s)" % \ + (';'.join([repr(x) for x in self.vtxinwit])) + + def is_null(self): + for x in self.vtxinwit: + if not x.is_null(): + return False + return True + + +class CTransaction(): + def __init__(self, tx=None): + if tx is None: + self.nVersion = 1 + self.vin = [] + self.vout = [] + self.wit = CTxWitness() + self.nLockTime = 0 + self.sha256 = None + self.hash = None + else: + self.nVersion = tx.nVersion + self.vin = copy.deepcopy(tx.vin) + self.vout = copy.deepcopy(tx.vout) + self.nLockTime = tx.nLockTime + self.sha256 = tx.sha256 + self.hash = tx.hash + self.wit = copy.deepcopy(tx.wit) + + def deserialize(self, f): + self.nVersion = struct.unpack("<i", f.read(4))[0] + self.vin = deser_vector(f, CTxIn) + flags = 0 + if len(self.vin) == 0: + flags = struct.unpack("<B", f.read(1))[0] + # Not sure why flags can't be zero, but this + # matches the implementation in bitcoind + if (flags != 0): + self.vin = deser_vector(f, CTxIn) + self.vout = deser_vector(f, CTxOut) + else: + self.vout = deser_vector(f, CTxOut) + if flags != 0: + self.wit.vtxinwit = [CTxInWitness() for i in range(len(self.vin))] + self.wit.deserialize(f) + self.nLockTime = struct.unpack("<I", f.read(4))[0] + self.sha256 = None + self.hash = None + + def serialize_without_witness(self): + r = b"" + r += struct.pack("<i", self.nVersion) + r += ser_vector(self.vin) + r += ser_vector(self.vout) + r += struct.pack("<I", self.nLockTime) + return r + + # Only serialize with witness when explicitly called for + def serialize_with_witness(self): + flags = 0 + if not self.wit.is_null(): + flags |= 1 + r = b"" + r += struct.pack("<i", self.nVersion) + if flags: + dummy = [] + r += ser_vector(dummy) + r += struct.pack("<B", flags) + r += ser_vector(self.vin) + r += ser_vector(self.vout) + if flags & 1: + if (len(self.wit.vtxinwit) != len(self.vin)): + # vtxinwit must have the same length as vin + self.wit.vtxinwit = self.wit.vtxinwit[:len(self.vin)] + for i in range(len(self.wit.vtxinwit), len(self.vin)): + self.wit.vtxinwit.append(CTxInWitness()) + r += self.wit.serialize() + r += struct.pack("<I", self.nLockTime) + return r + + # Regular serialization is without witness -- must explicitly + # call serialize_with_witness to include witness data. + def serialize(self): + return self.serialize_without_witness() + + # Recalculate the txid (transaction hash without witness) + def rehash(self): + self.sha256 = None + self.calc_sha256() + + # We will only cache the serialization without witness in + # self.sha256 and self.hash -- those are expected to be the txid. + def calc_sha256(self, with_witness=False): + if with_witness: + # Don't cache the result, just return it + return uint256_from_str(hash256(self.serialize_with_witness())) + + if self.sha256 is None: + self.sha256 = uint256_from_str(hash256(self.serialize_without_witness())) + self.hash = encode(hash256(self.serialize())[::-1], 'hex_codec').decode('ascii') + + 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 + + def __repr__(self): + return "CTransaction(nVersion=%i vin=%s vout=%s wit=%s nLockTime=%i)" \ + % (self.nVersion, repr(self.vin), repr(self.vout), repr(self.wit), self.nLockTime) + + +class CBlockHeader(): + 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 = 1 + 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(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 nTime=%s nBits=%08x nNonce=%08x)" \ + % (self.nVersion, self.hashPrevBlock, self.hashMerkleRoot, + time.ctime(self.nTime), self.nBits, self.nNonce) + + +class CBlock(CBlockHeader): + 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=False): + r = b"" + r += super(CBlock, self).serialize() + if with_witness: + r += ser_vector(self.vtx, "serialize_with_witness") + else: + r += ser_vector(self.vtx) + 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 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() + + 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 PrefilledTransaction(): + 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=False): + 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_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(): + 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) + 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): + 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(): + 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 != 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 = [0], use_witness = False): + 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(): + + def __init__(self, blockhash=0, indexes = None): + self.blockhash = blockhash + self.indexes = indexes if indexes != 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(): + + def __init__(self, blockhash=0, transactions = None): + self.blockhash = blockhash + self.transactions = transactions if transactions != None else [] + + def deserialize(self, f): + self.blockhash = deser_uint256(f) + self.transactions = deser_vector(f, CTransaction) + + def serialize(self, with_witness=False): + r = b"" + r += ser_uint256(self.blockhash) + if with_witness: + r += ser_vector(self.transactions, "serialize_with_witness") + else: + r += ser_vector(self.transactions) + return r + + def __repr__(self): + return "BlockTransactions(hash=%064x transactions=%s)" % (self.blockhash, repr(self.transactions)) + + +# Objects that correspond to messages on the wire +class msg_version(): + 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] + if self.nVersion == 10300: + self.nVersion = 300 + 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) + + if self.nVersion >= 106: + self.addrFrom = CAddress() + self.addrFrom.deserialize(f) + self.nNonce = struct.unpack("<Q", f.read(8))[0] + self.strSubVer = deser_string(f) + else: + self.addrFrom = None + self.nNonce = None + self.strSubVer = None + self.nStartingHeight = None + + if self.nVersion >= 209: + self.nStartingHeight = struct.unpack("<i", f.read(4))[0] + else: + self.nStartingHeight = None + + 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() + r += self.addrFrom.serialize() + 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(): + 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(): + 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(): + 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(): + command = b"getdata" + + def __init__(self, inv=None): + self.inv = inv if inv != 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(): + 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(): + 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): + + def serialize(self): + return self.tx.serialize_with_witness() + + +class msg_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(): + 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_witness_block(msg_block): + + def serialize(self): + r = self.block.serialize(with_witness=True) + return r + +class msg_getaddr(): + 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(): + 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(): + 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(): + 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_sendheaders(): + 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(): + 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(): + command = b"headers" + + def __init__(self, headers=None): + self.headers = headers if headers is not None else [] + + def deserialize(self, f): + # comment in bitcoind 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(): + 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(): + 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(): + 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(): + 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(): + 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(): + 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_witness_blocktxn(msg_blocktxn): + def serialize(self): + r = b"" + r += self.block_transactions.serialize(with_witness=True) + return r |