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261 lines
13 KiB
261 lines
13 KiB
#!/usr/bin/env python3
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# Copyright (c) 2015-2022 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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"""Test multisig RPCs"""
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import decimal
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import itertools
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import json
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import os
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from test_framework.address import address_to_scriptpubkey
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from test_framework.descriptors import descsum_create, drop_origins
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from test_framework.key import ECPubKey
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from test_framework.messages import COIN
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from test_framework.script_util import keys_to_multisig_script
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_raises_rpc_error,
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assert_equal,
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)
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from test_framework.wallet_util import generate_keypair
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from test_framework.wallet import (
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MiniWallet,
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getnewdestination,
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)
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class RpcCreateMultiSigTest(BitcoinTestFramework):
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def add_options(self, parser):
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self.add_wallet_options(parser)
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 3
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self.supports_cli = False
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self.enable_wallet_if_possible()
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def create_keys(self, num_keys):
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self.pub = []
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self.priv = []
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for _ in range(num_keys):
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privkey, pubkey = generate_keypair(wif=True)
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self.pub.append(pubkey.hex())
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self.priv.append(privkey)
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def create_wallet(self, node, wallet_name):
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node.createwallet(wallet_name=wallet_name, disable_private_keys=True)
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return node.get_wallet_rpc(wallet_name)
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def run_test(self):
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node0, node1, node2 = self.nodes
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self.wallet = MiniWallet(test_node=node0)
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if self.is_wallet_compiled():
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self.check_addmultisigaddress_errors()
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self.log.info('Generating blocks ...')
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self.generate(self.wallet, 149)
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wallet_multi = self.create_wallet(node1, 'wmulti') if self._requires_wallet else None
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self.create_keys(21) # max number of allowed keys + 1
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m_of_n = [(2, 3), (3, 3), (2, 5), (3, 5), (10, 15), (15, 15)]
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for (sigs, keys) in m_of_n:
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for output_type in ["bech32", "p2sh-segwit", "legacy"]:
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self.do_multisig(keys, sigs, output_type, wallet_multi)
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self.test_multisig_script_limit(wallet_multi)
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self.test_mixing_uncompressed_and_compressed_keys(node0, wallet_multi)
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self.test_sortedmulti_descriptors_bip67()
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# Check that bech32m is currently not allowed
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assert_raises_rpc_error(-5, "createmultisig cannot create bech32m multisig addresses", self.nodes[0].createmultisig, 2, self.pub, "bech32m")
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self.log.info('Check correct encoding of multisig script for all n (1..20)')
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for nkeys in range(1, 20+1):
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keys = [self.pub[0]]*nkeys
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expected_ms_script = keys_to_multisig_script(keys, k=nkeys) # simply use n-of-n
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# note that the 'legacy' address type fails for n values larger than 15
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# due to exceeding the P2SH size limit (520 bytes), so we use 'bech32' instead
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# (for the purpose of this encoding test, we don't care about the resulting address)
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res = self.nodes[0].createmultisig(nrequired=nkeys, keys=keys, address_type='bech32')
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assert_equal(res['redeemScript'], expected_ms_script.hex())
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def check_addmultisigaddress_errors(self):
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if self.options.descriptors:
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return
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self.log.info('Check that addmultisigaddress fails when the private keys are missing')
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addresses = [self.nodes[1].getnewaddress(address_type='legacy') for _ in range(2)]
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assert_raises_rpc_error(-5, 'no full public key for address', lambda: self.nodes[0].addmultisigaddress(nrequired=1, keys=addresses))
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for a in addresses:
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# Importing all addresses should not change the result
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self.nodes[0].importaddress(a)
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assert_raises_rpc_error(-5, 'no full public key for address', lambda: self.nodes[0].addmultisigaddress(nrequired=1, keys=addresses))
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# Bech32m address type is disallowed for legacy wallets
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pubs = [self.nodes[1].getaddressinfo(addr)["pubkey"] for addr in addresses]
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assert_raises_rpc_error(-5, "Bech32m multisig addresses cannot be created with legacy wallets", self.nodes[0].addmultisigaddress, 2, pubs, "", "bech32m")
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def test_multisig_script_limit(self, wallet_multi):
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node1 = self.nodes[1]
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pubkeys = self.pub[0:20]
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self.log.info('Test legacy redeem script max size limit')
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assert_raises_rpc_error(-8, "redeemScript exceeds size limit: 684 > 520", node1.createmultisig, 16, pubkeys, 'legacy')
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self.log.info('Test valid 16-20 multisig p2sh-legacy and bech32 (no wallet)')
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self.do_multisig(nkeys=20, nsigs=16, output_type="p2sh-segwit", wallet_multi=None)
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self.do_multisig(nkeys=20, nsigs=16, output_type="bech32", wallet_multi=None)
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self.log.info('Test invalid 16-21 multisig p2sh-legacy and bech32 (no wallet)')
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assert_raises_rpc_error(-8, "Number of keys involved in the multisignature address creation > 20", node1.createmultisig, 16, self.pub, 'p2sh-segwit')
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assert_raises_rpc_error(-8, "Number of keys involved in the multisignature address creation > 20", node1.createmultisig, 16, self.pub, 'bech32')
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# Check legacy wallet related command
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self.log.info('Test legacy redeem script max size limit (with wallet)')
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if wallet_multi is not None and not self.options.descriptors:
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assert_raises_rpc_error(-8, "redeemScript exceeds size limit: 684 > 520", wallet_multi.addmultisigaddress, 16, pubkeys, '', 'legacy')
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self.log.info('Test legacy wallet unsupported operation. 16-20 multisig p2sh-legacy and bech32 generation')
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# Due an internal limitation on legacy wallets, the redeem script limit also applies to p2sh-segwit and bech32 (even when the scripts are valid)
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# We take this as a "good thing" to tell users to upgrade to descriptors.
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assert_raises_rpc_error(-4, "Unsupported multisig script size for legacy wallet. Upgrade to descriptors to overcome this limitation for p2sh-segwit or bech32 scripts", wallet_multi.addmultisigaddress, 16, pubkeys, '', 'p2sh-segwit')
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assert_raises_rpc_error(-4, "Unsupported multisig script size for legacy wallet. Upgrade to descriptors to overcome this limitation for p2sh-segwit or bech32 scripts", wallet_multi.addmultisigaddress, 16, pubkeys, '', 'bech32')
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def do_multisig(self, nkeys, nsigs, output_type, wallet_multi):
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node0, node1, node2 = self.nodes
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pub_keys = self.pub[0: nkeys]
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priv_keys = self.priv[0: nkeys]
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# Construct the expected descriptor
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desc = 'multi({},{})'.format(nsigs, ','.join(pub_keys))
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if output_type == 'legacy':
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desc = 'sh({})'.format(desc)
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elif output_type == 'p2sh-segwit':
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desc = 'sh(wsh({}))'.format(desc)
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elif output_type == 'bech32':
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desc = 'wsh({})'.format(desc)
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desc = descsum_create(desc)
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msig = node2.createmultisig(nsigs, pub_keys, output_type)
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assert 'warnings' not in msig
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madd = msig["address"]
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mredeem = msig["redeemScript"]
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assert_equal(desc, msig['descriptor'])
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if output_type == 'bech32':
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assert madd[0:4] == "bcrt" # actually a bech32 address
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if wallet_multi is not None:
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# compare against addmultisigaddress
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msigw = wallet_multi.addmultisigaddress(nsigs, pub_keys, None, output_type)
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maddw = msigw["address"]
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mredeemw = msigw["redeemScript"]
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assert_equal(desc, drop_origins(msigw['descriptor']))
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# addmultisigiaddress and createmultisig work the same
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assert maddw == madd
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assert mredeemw == mredeem
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spk = address_to_scriptpubkey(madd)
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value = decimal.Decimal("0.00004000")
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tx = self.wallet.send_to(from_node=self.nodes[0], scriptPubKey=spk, amount=int(value * COIN))
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prevtxs = [{"txid": tx["txid"], "vout": tx["sent_vout"], "scriptPubKey": spk.hex(), "redeemScript": mredeem, "amount": value}]
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self.generate(node0, 1)
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outval = value - decimal.Decimal("0.00002000") # deduce fee (must be higher than the min relay fee)
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# send coins to node2 when wallet is enabled
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node2_balance = node2.getbalances()['mine']['trusted'] if self.is_wallet_compiled() else 0
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out_addr = node2.getnewaddress() if self.is_wallet_compiled() else getnewdestination('bech32')[2]
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rawtx = node2.createrawtransaction([{"txid": tx["txid"], "vout": tx["sent_vout"]}], [{out_addr: outval}])
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prevtx_err = dict(prevtxs[0])
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del prevtx_err["redeemScript"]
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assert_raises_rpc_error(-8, "Missing redeemScript/witnessScript", node2.signrawtransactionwithkey, rawtx, priv_keys[0:nsigs-1], [prevtx_err])
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# if witnessScript specified, all ok
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prevtx_err["witnessScript"] = prevtxs[0]["redeemScript"]
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node2.signrawtransactionwithkey(rawtx, priv_keys[0:nsigs-1], [prevtx_err])
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# both specified, also ok
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prevtx_err["redeemScript"] = prevtxs[0]["redeemScript"]
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node2.signrawtransactionwithkey(rawtx, priv_keys[0:nsigs-1], [prevtx_err])
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# redeemScript mismatch to witnessScript
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prevtx_err["redeemScript"] = "6a" # OP_RETURN
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assert_raises_rpc_error(-8, "redeemScript does not correspond to witnessScript", node2.signrawtransactionwithkey, rawtx, priv_keys[0:nsigs-1], [prevtx_err])
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# redeemScript does not match scriptPubKey
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del prevtx_err["witnessScript"]
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assert_raises_rpc_error(-8, "redeemScript/witnessScript does not match scriptPubKey", node2.signrawtransactionwithkey, rawtx, priv_keys[0:nsigs-1], [prevtx_err])
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# witnessScript does not match scriptPubKey
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prevtx_err["witnessScript"] = prevtx_err["redeemScript"]
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del prevtx_err["redeemScript"]
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assert_raises_rpc_error(-8, "redeemScript/witnessScript does not match scriptPubKey", node2.signrawtransactionwithkey, rawtx, priv_keys[0:nsigs-1], [prevtx_err])
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rawtx2 = node2.signrawtransactionwithkey(rawtx, priv_keys[0:nsigs - 1], prevtxs)
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rawtx3 = node2.signrawtransactionwithkey(rawtx2["hex"], [priv_keys[-1]], prevtxs)
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assert rawtx3['complete']
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tx = node0.sendrawtransaction(rawtx3["hex"], 0)
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blk = self.generate(node0, 1)[0]
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assert tx in node0.getblock(blk)["tx"]
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# When the wallet is enabled, assert node2 sees the incoming amount
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if self.is_wallet_compiled():
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assert_equal(node2.getbalances()['mine']['trusted'], node2_balance + outval)
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txinfo = node0.getrawtransaction(tx, True, blk)
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self.log.info("n/m=%d/%d %s size=%d vsize=%d weight=%d" % (nsigs, nkeys, output_type, txinfo["size"], txinfo["vsize"], txinfo["weight"]))
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def test_mixing_uncompressed_and_compressed_keys(self, node, wallet_multi):
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self.log.info('Mixed compressed and uncompressed multisigs are not allowed')
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pk0, pk1, pk2 = [getnewdestination('bech32')[0].hex() for _ in range(3)]
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# decompress pk2
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pk_obj = ECPubKey()
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pk_obj.set(bytes.fromhex(pk2))
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pk_obj.compressed = False
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pk2 = pk_obj.get_bytes().hex()
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# Check all permutations of keys because order matters apparently
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for keys in itertools.permutations([pk0, pk1, pk2]):
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# Results should be the same as this legacy one
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legacy_addr = node.createmultisig(2, keys, 'legacy')['address']
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if wallet_multi is not None:
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# 'addmultisigaddress' should return the same address
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result = wallet_multi.addmultisigaddress(2, keys, '', 'legacy')
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assert_equal(legacy_addr, result['address'])
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assert 'warnings' not in result
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# Generate addresses with the segwit types. These should all make legacy addresses
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err_msg = ["Unable to make chosen address type, please ensure no uncompressed public keys are present."]
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for addr_type in ['bech32', 'p2sh-segwit']:
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result = self.nodes[0].createmultisig(nrequired=2, keys=keys, address_type=addr_type)
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assert_equal(legacy_addr, result['address'])
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assert_equal(result['warnings'], err_msg)
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if wallet_multi is not None:
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result = wallet_multi.addmultisigaddress(nrequired=2, keys=keys, address_type=addr_type)
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assert_equal(legacy_addr, result['address'])
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assert_equal(result['warnings'], err_msg)
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def test_sortedmulti_descriptors_bip67(self):
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self.log.info('Testing sortedmulti descriptors with BIP 67 test vectors')
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with open(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'data/rpc_bip67.json'), encoding='utf-8') as f:
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vectors = json.load(f)
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for t in vectors:
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key_str = ','.join(t['keys'])
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desc = descsum_create('sh(sortedmulti(2,{}))'.format(key_str))
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assert_equal(self.nodes[0].deriveaddresses(desc)[0], t['address'])
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sorted_key_str = ','.join(t['sorted_keys'])
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sorted_key_desc = descsum_create('sh(multi(2,{}))'.format(sorted_key_str))
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assert_equal(self.nodes[0].deriveaddresses(sorted_key_desc)[0], t['address'])
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if __name__ == '__main__':
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RpcCreateMultiSigTest(__file__).main()
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