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Merge bitcoin/bitcoin#28067: descriptors: do not return top-level only funcs as sub descriptors

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dd9633b516 test: wallet, add coverage for watch-only raw sh script migration (furszy)
cc781a2180 descriptor: InferScript, do not return top-level only func as sub descriptor (furszy)
286e0c7d5e wallet: loading, log descriptor parsing error details (furszy)

Pull request description:

  Linked to #28057.

  Currently, the `InferScript` function returns an invalid descriptor when it tries to infer a p2sh-p2pkh script whose pubkey is not known by the wallet.

  This behavior occurs because the inference process bypasses the `pkh` subscript when the pubkey is not contained by the wallet (no pubkey provider), interpreting it as a `sh(addr(ADDR))` descriptor. Then, the failure arises because the `addr()` function is restricted to being used only at the top level.

  For reviewers, would recommend to start by examining the functional test to understand the context and the circumstances on which this can result in a fatal error (e.g. during the migration process).

ACKs for top commit:
  achow101:
    ACK dd9633b516
  darosior:
    utACK dd9633b516

Tree-SHA512: 61e763206c604c372019d2c36e31684f3dddf81f8b154eb9aba5cd66d8d61bda457ed4e591613eb6ce6c76cf7c3f11764abc6cd727a7c2b6414f1065783be032
This commit is contained in:
Andrew Chow 2023-07-20 11:09:10 -04:00
commit 7edce77ff3
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GPG key ID: 17565732E08E5E41
5 changed files with 59 additions and 3 deletions
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4
src/script/descriptor.cpp
View file

@ -1723,6 +1723,10 @@ std::unique_ptr<DescriptorImpl> InferScript(const CScript& script, ParseScriptCo
}
}
// The following descriptors are all top-level only descriptors.
// So if we are not at the top level, return early.
if (ctx != ParseScriptContext::TOP) return nullptr;
CTxDestination dest;
if (ExtractDestination(script, dest)) {
if (GetScriptForDestination(dest) == script) {

4
src/wallet/walletdb.cpp
View file

@ -794,11 +794,13 @@ static DBErrors LoadDescriptorWalletRecords(CWallet* pwallet, DatabaseBatch& bat
WalletDescriptor desc;
try {
value >> desc;
} catch (const std::ios_base::failure&) {
} catch (const std::ios_base::failure& e) {
strErr = strprintf("Error: Unrecognized descriptor found in wallet %s. ", pwallet->GetName());
strErr += (last_client > CLIENT_VERSION) ? "The wallet might had been created on a newer version. " :
"The database might be corrupted or the software version is not compatible with one of your wallet descriptors. ";
strErr += "Please try running the latest software version";
// Also include error details
strErr = strprintf("%s\nDetails: %s", strErr, e.what());
return DBErrors::UNKNOWN_DESCRIPTOR;
}
pwallet->LoadDescriptorScriptPubKeyMan(id, desc);

2
test/functional/data/rpc_decodescript.json
View file

@ -69,7 +69,7 @@
"p2sh": "2N34iiGoUUkVSPiaaTFpJjB1FR9TXQu3PGM",
"segwit": {
"asm": "0 96c2368fc30514a438a8bd909f93c49a1549d77198ccbdb792043b666cb24f42",
"desc": "wsh(raw(02eeee))#gtay4y0z",
"desc": "addr(bcrt1qjmprdr7rq522gw9ghkgfly7yng25n4m3nrxtmdujqsakvm9jfapqk795l5)#5akkdska",
"hex": "002096c2368fc30514a438a8bd909f93c49a1549d77198ccbdb792043b666cb24f42",
"address": "bcrt1qjmprdr7rq522gw9ghkgfly7yng25n4m3nrxtmdujqsakvm9jfapqk795l5",
"type": "witness_v0_scripthash",

2
test/functional/rpc_decodescript.py
View file

@ -271,7 +271,7 @@ class DecodeScriptTest(BitcoinTestFramework):
assert res["segwit"]["desc"] == "wsh(and_v(and_v(v:hash160(ffffffffffffffffffffffffffffffffffffffff),v:pk(0250929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803ac0)),older(1)))#gm8xz4fl"
# Miniscript-incompatible offered HTLC
res = self.nodes[0].decodescript("82012088a914ffffffffffffffffffffffffffffffffffffffff882102ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffacb2")
assert res["segwit"]["desc"] == "wsh(raw(82012088a914ffffffffffffffffffffffffffffffffffffffff882102ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffacb2))#ra6w2xa7"
assert res["segwit"]["desc"] == "addr(bcrt1q73qyfypp47hvgnkjqnav0j3k2lq3v76wg22dk8tmwuz5sfgv66xsvxg6uu)#9p3q328s"
# Miniscript-compatible multisig bigger than 520 byte P2SH limit.
res = self.nodes[0].decodescript("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")
assert_equal(res["segwit"]["desc"], "wsh(or_d(multi(11,020e0338c96a8870479f2396c373cc7696ba124e8635d41b0ea581112b67817261,02675333a4e4b8fb51d9d4e22fa5a8eaced3fdac8a8cbf9be8c030f75712e6af99,02896807d54bc55c24981f24a453c60ad3e8993d693732288068a23df3d9f50d48,029e51a5ef5db3137051de8323b001749932f2ff0d34c82e96a2c2461de96ae56c,02a4e1a9638d46923272c266631d94d36bdb03a64ee0e14c7518e49d2f29bc4010,031c41fdbcebe17bec8d49816e00ca1b5ac34766b91c9f2ac37d39c63e5e008afb,03079e252e85abffd3c401a69b087e590a9b86f33f574f08129ccbd3521ecf516b,03111cf405b627e22135b3b3733a4a34aa5723fb0f58379a16d32861bf576b0ec2,0318f331b3e5d38156da6633b31929c5b220349859cc9ca3d33fb4e68aa0840174,03230dae6b4ac93480aeab26d000841298e3b8f6157028e47b0897c1e025165de1,035abff4281ff00660f99ab27bb53e6b33689c2cd8dcd364bc3c90ca5aea0d71a6,03bd45cddfacf2083b14310ae4a84e25de61e451637346325222747b157446614c,03cc297026b06c71cbfa52089149157b5ff23de027ac5ab781800a578192d17546,03d3bde5d63bdb3a6379b461be64dad45eabff42f758543a9645afd42f6d424828,03ed1e8d5109c9ed66f7941bc53cc71137baa76d50d274bda8d5e8ffbd6e61fe9a),and_v(v:older(4032),multi(2,03aab896d53a8e7d6433137bbba940f9c521e085dd07e60994579b64a6d992cf79,0291b7d0b1b692f8f524516ed950872e5da10fb1b808b5a526dedc6fed1cf29807,0386aa9372fbab374593466bc5451dc59954e90787f08060964d95c87ef34ca5bb))))#7jwwklk4")

50
test/functional/wallet_migration.py
View file

@ -8,6 +8,8 @@ import random
import shutil
from test_framework.descriptors import descsum_create
from test_framework.test_framework import BitcoinTestFramework
from test_framework.messages import COIN, CTransaction, CTxOut
from test_framework.script_util import key_to_p2pkh_script, script_to_p2sh_script, script_to_p2wsh_script
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
@ -639,6 +641,53 @@ class WalletMigrationTest(BitcoinTestFramework):
for addr_info in [addr_external, addr_external_with_label]:
check(addr_info, wallet_solvables)
def test_migrate_raw_p2sh(self):
self.log.info("Test migration of watch-only raw p2sh script")
df_wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
wallet = self.create_legacy_wallet("raw_p2sh")
def send_to_script(script, amount):
tx = CTransaction()
tx.vout.append(CTxOut(nValue=amount*COIN, scriptPubKey=script))
hex_tx = df_wallet.fundrawtransaction(tx.serialize().hex())['hex']
signed_tx = df_wallet.signrawtransactionwithwallet(hex_tx)
df_wallet.sendrawtransaction(signed_tx['hex'])
self.generate(self.nodes[0], 1)
# Craft sh(pkh(key)) script and send coins to it
pubkey = df_wallet.getaddressinfo(df_wallet.getnewaddress())["pubkey"]
script_pkh = key_to_p2pkh_script(pubkey)
script_sh_pkh = script_to_p2sh_script(script_pkh)
send_to_script(script=script_sh_pkh, amount=2)
# Import script and check balance
wallet.rpc.importaddress(address=script_pkh.hex(), label="raw_spk", rescan=True, p2sh=True)
assert_equal(wallet.getbalances()['watchonly']['trusted'], 2)
# Craft wsh(pkh(key)) and send coins to it
pubkey = df_wallet.getaddressinfo(df_wallet.getnewaddress())["pubkey"]
script_wsh_pkh = script_to_p2wsh_script(key_to_p2pkh_script(pubkey))
send_to_script(script=script_wsh_pkh, amount=3)
# Import script and check balance
wallet.rpc.importaddress(address=script_wsh_pkh.hex(), label="raw_spk2", rescan=True, p2sh=False)
assert_equal(wallet.getbalances()['watchonly']['trusted'], 5)
# Migrate wallet and re-check balance
info_migration = wallet.migratewallet()
wallet_wo = self.nodes[0].get_wallet_rpc(info_migration["watchonly_name"])
# Watch-only balance is under "mine".
assert_equal(wallet_wo.getbalances()['mine']['trusted'], 5)
# The watch-only scripts are no longer part of the main wallet
assert_equal(wallet.getbalances()['mine']['trusted'], 0)
# Just in case, also verify wallet restart
self.nodes[0].unloadwallet(info_migration["watchonly_name"])
self.nodes[0].loadwallet(info_migration["watchonly_name"])
assert_equal(wallet_wo.getbalances()['mine']['trusted'], 5)
def run_test(self):
self.generate(self.nodes[0], 101)
@ -654,6 +703,7 @@ class WalletMigrationTest(BitcoinTestFramework):
self.test_default_wallet()
self.test_direct_file()
self.test_addressbook()
self.test_migrate_raw_p2sh()
if __name__ == '__main__':
WalletMigrationTest().main()