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fix: new fork 'withdrawals' and fixes for asset unlock signature verification #6279

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Oct 21, 2024
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36 changes: 36 additions & 0 deletions src/chainparams.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -209,6 +209,15 @@ class CMainParams : public CChainParams {
consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay

consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].bit = 11;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nStartTime = 1728864000; // October 14, 2024
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nTimeout = 1760400000; // October 14, 2025
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nWindowSize = 4032;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nThresholdStart = 3226; // 80% of 4032
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nThresholdMin = 2420; // 60% of 4032
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nFalloffCoeff = 5; // this corresponds to 10 periods
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].useEHF = true;

// The best chain should have at least this much work.
consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000988117deadb0db9cd5b8"); // 2109672

Expand Down Expand Up @@ -395,6 +404,15 @@ class CTestNetParams : public CChainParams {
consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay

consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].bit = 11;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nStartTime = 1728864000; // October 14, 2024
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nWindowSize = 100;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nThresholdStart = 80; // 80% of 100
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nThresholdMin = 60; // 60% of 100
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nFalloffCoeff = 5; // this corresponds to 10 periods
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].useEHF = true;

// The best chain should have at least this much work.
consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000000031779704a0f54b4"); // 1069875

Expand Down Expand Up @@ -556,6 +574,15 @@ class CDevNetParams : public CChainParams {
consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay

consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].bit = 11;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nStartTime = 1704067200; // January 1, 2024
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nWindowSize = 120;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nThresholdStart = 80; // 80% of 100
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nThresholdMin = 60; // 60% of 100
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nFalloffCoeff = 5; // this corresponds to 10 periods
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].useEHF = true;

// The best chain should have at least this much work.
consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000000000000000000000");

Expand Down Expand Up @@ -782,6 +809,15 @@ class CRegTestParams : public CChainParams {
consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay

consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].bit = 11;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nStartTime = 0;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nWindowSize = 300;
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nThresholdStart = 300 / 5 * 4; // 80% of 12
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nThresholdMin = 300 / 5 * 3; // 60% of 7
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].nFalloffCoeff = 5; // this corresponds to 10 periods
consensus.vDeployments[Consensus::DEPLOYMENT_WITHDRAWALS].useEHF = true;

// The best chain should have at least this much work.
consensus.nMinimumChainWork = uint256S("0x00");

Expand Down
1 change: 1 addition & 0 deletions src/consensus/params.h
Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,7 @@ constexpr bool ValidDeployment(BuriedDeployment dep) { return dep <= DEPLOYMENT_

enum DeploymentPos : uint16_t {
DEPLOYMENT_TESTDUMMY,
DEPLOYMENT_WITHDRAWALS, // Deployment of Fix for quorum selection for withdrawals
// NOTE: Also add new deployments to VersionBitsDeploymentInfo in deploymentinfo.cpp
MAX_VERSION_BITS_DEPLOYMENTS
};
Expand Down
4 changes: 4 additions & 0 deletions src/deploymentinfo.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,10 @@ const struct VBDeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_B
/*.name =*/ "testdummy",
/*.gbt_force =*/ true,
},
{
/*.name =*/"withdrawals",
/*.gbt_force =*/true,
},
};

std::string DeploymentName(Consensus::BuriedDeployment dep)
Expand Down
15 changes: 12 additions & 3 deletions src/evo/assetlocktx.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
#include <chainparams.h>
#include <consensus/params.h>
#include <consensus/validation.h>
#include <deploymentstatus.h>
#include <logging.h>
#include <tinyformat.h>
#include <util/ranges_set.h>
Expand Down Expand Up @@ -113,13 +114,21 @@ bool CAssetUnlockPayload::VerifySig(const llmq::CQuorumManager& qman, const uint
// and at the quorumHash must be active in either the current or previous quorum cycle
// and the sig must validate against that specific quorumHash.


Consensus::LLMQType llmqType = Params().GetConsensus().llmqTypePlatform;

// We check at most 2 quorums
const auto quorums = qman.ScanQuorums(llmqType, pindexTip, 2);
const auto& llmq_params_opt = Params().GetLLMQ(llmqType);
assert(llmq_params_opt.has_value());

// We check two quorums before DEPLOYMENT_WITHDRAWALS activation
// and "all active quorums + 1 the latest inactive" after activation.
const int quorums_to_scan = DeploymentActiveAt(*pindexTip, Params().GetConsensus(), Consensus::DEPLOYMENT_WITHDRAWALS)
? (llmq_params_opt->signingActiveQuorumCount + 1)
: 2;
const auto quorums = qman.ScanQuorums(llmqType, pindexTip, quorums_to_scan);

if (bool isActive = std::any_of(quorums.begin(), quorums.end(), [&](const auto &q) { return q->qc->quorumHash == quorumHash; }); !isActive) {
return state.Invalid(TxValidationResult::TX_CONSENSUS, "bad-assetunlock-not-active-quorum");
return state.Invalid(TxValidationResult::TX_CONSENSUS, "bad-assetunlock-too-old-quorum");
Comment on lines -122 to +131
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why change this?

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because (active quorums + the latest inactive) are matched. So, quorum can be not-active, but still valid.

? (llmq_params_opt->signingActiveQuorumCount + 1)

}

if (static_cast<uint32_t>(pindexTip->nHeight) < requestedHeight || pindexTip->nHeight >= getHeightToExpiry()) {
Expand Down
1 change: 1 addition & 0 deletions src/rpc/blockchain.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -1841,6 +1841,7 @@ RPCHelpMan getblockchaininfo()
SoftForkDescPushBack(tip, softforks, consensusParams, Consensus::DEPLOYMENT_V19);
SoftForkDescPushBack(tip, softforks, consensusParams, Consensus::DEPLOYMENT_V20);
SoftForkDescPushBack(tip, softforks, consensusParams, Consensus::DEPLOYMENT_MN_RR);
SoftForkDescPushBack(tip, ehfSignals, softforks, consensusParams, Consensus::DEPLOYMENT_WITHDRAWALS);
SoftForkDescPushBack(tip, ehfSignals, softforks, consensusParams, Consensus::DEPLOYMENT_TESTDUMMY);

obj.pushKV("softforks", softforks);
Expand Down
50 changes: 47 additions & 3 deletions test/functional/feature_asset_locks.py
Original file line number Diff line number Diff line change
Expand Up @@ -38,12 +38,14 @@
assert_equal,
assert_greater_than,
assert_greater_than_or_equal,
softfork_active,
)
from test_framework.wallet_util import bytes_to_wif

llmq_type_test = 106 # LLMQType::LLMQ_TEST_PLATFORM
tiny_amount = int(Decimal("0.0007") * COIN)
blocks_in_one_day = 576
HEIGHT_DIFF_EXPIRING = 48

class AssetLocksTest(DashTestFramework):
def set_test_params(self):
Expand Down Expand Up @@ -271,6 +273,7 @@ def run_test(self):
self.test_asset_unlocks(node_wallet, node, pubkey)
self.test_withdrawal_limits(node_wallet, node, pubkey)
self.test_mn_rr(node_wallet, node, pubkey)
self.test_withdrawal_fork(node_wallet, pubkey)


def test_asset_locks(self, node_wallet, node, pubkey):
Expand Down Expand Up @@ -345,7 +348,7 @@ def test_asset_unlocks(self, node_wallet, node, pubkey):
asset_unlock_tx_duplicate_index = copy.deepcopy(asset_unlock_tx)
# modify this tx with duplicated index to make a hash of tx different, otherwise tx would be refused too early
asset_unlock_tx_duplicate_index.vout[0].nValue += COIN
too_late_height = node.getblockcount() + 48
too_late_height = node.getblockcount() + HEIGHT_DIFF_EXPIRING

self.check_mempool_result(tx=asset_unlock_tx, result_expected={'allowed': True, 'fees': {'base': Decimal(str(tiny_amount / COIN))}})
self.check_mempool_result(tx=asset_unlock_tx_too_big_fee,
Expand Down Expand Up @@ -430,8 +433,9 @@ def test_asset_unlocks(self, node_wallet, node, pubkey):
self.log.info("Checking that two quorums later it is too late because quorum is not active...")
self.mine_quorum_2_nodes(llmq_type_name='llmq_test_platform', llmq_type=106)
self.log.info("Expecting new reject-reason...")
assert not softfork_active(self.nodes[0], 'withdrawals')
self.check_mempool_result(tx=asset_unlock_tx_too_late,
result_expected={'allowed': False, 'reject-reason' : 'bad-assetunlock-not-active-quorum'})
result_expected={'allowed': False, 'reject-reason' : 'bad-assetunlock-too-old-quorum'})

block_to_reconsider = node.getbestblockhash()
self.log.info("Test block invalidation with asset unlock tx...")
Expand All @@ -445,7 +449,8 @@ def test_asset_unlocks(self, node_wallet, node, pubkey):
self.validate_credit_pool_balance(locked - 2 * COIN)

self.log.info("Forcibly mining asset_unlock_tx_too_late and ensure block is invalid")
self.create_and_check_block([asset_unlock_tx_too_late], expected_error = "bad-assetunlock-not-active-quorum")
assert not softfork_active(self.nodes[0], 'withdrawals')
self.create_and_check_block([asset_unlock_tx_too_late], expected_error = "bad-assetunlock-too-old-quorum")

self.generate(node, 1)

Expand Down Expand Up @@ -636,6 +641,45 @@ def test_mn_rr(self, node_wallet, node, pubkey):
self.generate(node, 1)
assert_equal(locked, self.get_credit_pool_balance())

def test_withdrawal_fork(self, node_wallet, pubkey):
self.log.info("Testing asset unlock after 'withdrawal' activation...")
assert softfork_active(node_wallet, 'withdrawals')

index = 501
while index < 511:
self.log.info(f"Generating new Asset Unlock tx, index={index}...")
asset_unlock_tx = self.create_assetunlock(index, COIN, pubkey)
asset_unlock_tx_payload = CAssetUnlockTx()
asset_unlock_tx_payload.deserialize(BytesIO(asset_unlock_tx.vExtraPayload))

self.log.info("Check that Asset Unlock tx is valid for current quorum")
self.check_mempool_result(tx=asset_unlock_tx, result_expected={'allowed': True, 'fees': {'base': Decimal(str(tiny_amount / COIN))}})

quorumHash_str = format(asset_unlock_tx_payload.quorumHash, '064x')
assert quorumHash_str in node_wallet.quorum('list')['llmq_test_platform']

while quorumHash_str != node_wallet.quorum('list')['llmq_test_platform'][-1]:
self.log.info("Generate one more quorum until signing quorum becomes the last one in the list")
self.mine_quorum_2_nodes(llmq_type_name="llmq_test_platform", llmq_type=106)
self.check_mempool_result(tx=asset_unlock_tx, result_expected={'allowed': True, 'fees': {'base': Decimal(str(tiny_amount / COIN))}})

self.log.info("Generate one more quorum after which signing quorum is gone but Asset Unlock tx is still valid")
assert quorumHash_str in node_wallet.quorum('list')['llmq_test_platform']
self.mine_quorum_2_nodes(llmq_type_name="llmq_test_platform", llmq_type=106)
assert quorumHash_str not in node_wallet.quorum('list')['llmq_test_platform']

if asset_unlock_tx_payload.requestedHeight + HEIGHT_DIFF_EXPIRING > node_wallet.getblockcount():
self.check_mempool_result(tx=asset_unlock_tx, result_expected={'allowed': True, 'fees': {'base': Decimal(str(tiny_amount / COIN))}})
break
else:
self.check_mempool_result(tx=asset_unlock_tx, result_expected={'allowed': False, 'reject-reason' : 'bad-assetunlock-too-late'})
self.log.info("Asset Unlock tx expired, let's try again...")
index += 1

self.log.info("Generate one more quorum after which signing quorum becomes too old")
self.mine_quorum_2_nodes(llmq_type_name="llmq_test_platform", llmq_type=106)
self.check_mempool_result(tx=asset_unlock_tx, result_expected={'allowed': False, 'reject-reason': 'bad-assetunlock-too-old-quorum'})


if __name__ == '__main__':
AssetLocksTest().main()
11 changes: 11 additions & 0 deletions test/functional/rpc_blockchain.py
Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,17 @@ def _test_getblockchaininfo(self):
'v19': { 'type': 'buried', 'active': False, 'height': 900},
'v20': { 'type': 'buried', 'active': False, 'height': 900},
'mn_rr': { 'type': 'buried', 'active': False, 'height': 900},
'withdrawals': {
'type': 'bip9',
'bip9': {
'status': 'defined',
'start_time': 0,
'timeout': 9223372036854775807, # "withdrawals" does not have a timeout so is set to the max int64 value
'since': 0,
'min_activation_height': 0,
'ehf': True
},
'active': False},
'testdummy': {
'type': 'bip9',
'bip9': {
Expand Down
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