bool CTxLockRequest::IsValid() const
{
if(tx->vout.size() < 1) return false;
if(tx->vin.size() > WARN_MANY_INPUTS) {
LogPrint("instantsend", "CTxLockRequest::IsValid -- WARNING: Too many inputs: tx=%s", ToString());
}
LOCK(cs_main);
if(!CheckFinalTx(*tx)) {
LogPrint("instantsend", "CTxLockRequest::IsValid -- Transaction is not final: tx=%s", ToString());
return false;
}
CAmount nValueIn = 0;
int nInstantSendConfirmationsRequired = Params().GetConsensus().nInstantSendConfirmationsRequired;
for (const auto& txin : tx->vin) {
Coin coin;
if(!GetUTXOCoin(txin.prevout, coin)) {
LogPrint("instantsend", "CTxLockRequest::IsValid -- Failed to find UTXO %s\n", txin.prevout.ToStringShort());
return false;
}
int nTxAge = chainActive.Height() - coin.nHeight + 1;
// 1 less than the "send IX" gui requires, in case of a block propagating the network at the time
int nConfirmationsRequired = nInstantSendConfirmationsRequired - 1;
if(nTxAge < nConfirmationsRequired) {
LogPrint("instantsend", "CTxLockRequest::IsValid -- outpoint %s too new: nTxAge=%d, nConfirmationsRequired=%d, txid=%s\n",
txin.prevout.ToStringShort(), nTxAge, nConfirmationsRequired, GetHash().ToString());
return false;
}
nValueIn += coin.out.nValue;
}
if(nValueIn > sporkManager.GetSporkValue(SPORK_5_INSTANTSEND_MAX_VALUE)*COIN) {
LogPrint("instantsend", "CTxLockRequest::IsValid -- Transaction value too high: nValueIn=%d, tx=%s", nValueIn, ToString());
return false;
}
CAmount nValueOut = tx->GetValueOut();
if(nValueIn - nValueOut < GetMinFee()) {
LogPrint("instantsend", "CTxLockRequest::IsValid -- did not include enough fees in transaction: fees=%d, tx=%s", nValueOut - nValueIn, ToString());
return false;
}
return true;
}
// check to make sure the collateral provided by the client is valid
bool CPrivateSend::IsCollateralValid(const CTransaction& txCollateral)
{
if(txCollateral.vout.empty()) return false;
if(txCollateral.nLockTime != 0) return false;
CAmount nValueIn = 0;
CAmount nValueOut = 0;
for (const auto& txout : txCollateral.vout) {
nValueOut += txout.nValue;
bool fAllowData = true;
if(!txout.scriptPubKey.IsPayToPublicKeyHash() && !(fAllowData && txout.scriptPubKey.IsUnspendable())) {
LogPrintf ("CPrivateSend::IsCollateralValid -- Invalid Script, txCollateral=%s", txCollateral.ToString());
return false;
}
}
for (const auto& txin : txCollateral.vin) {
Coin coin;
if(!GetUTXOCoin(txin.prevout, coin)) {
LogPrint("privatesend", "CPrivateSend::IsCollateralValid -- Unknown inputs in collateral transaction, txCollateral=%s", txCollateral.ToString());
return false;
}
nValueIn += coin.out.nValue;
}
//collateral transactions are required to pay out a small fee to the miners
if(nValueIn - nValueOut < GetCollateralAmount()) {
LogPrint("privatesend", "CPrivateSend::IsCollateralValid -- did not include enough fees in transaction: fees: %d, txCollateral=%s", nValueOut - nValueIn, txCollateral.ToString());
return false;
}
LogPrint("privatesend", "CPrivateSend::IsCollateralValid -- %s", txCollateral.ToString());
{
LOCK(cs_main);
CValidationState validationState;
if(!AcceptToMemoryPool(mempool, validationState, MakeTransactionRef(txCollateral), false, NULL, NULL, false, maxTxFee, true)) {
LogPrint("privatesend", "CPrivateSend::IsCollateralValid -- didn't pass AcceptToMemoryPool()\n");
return false;
}
}
return true;
}
CMasternode::CollateralStatus CMasternode::CheckCollateral(const COutPoint& outpoint, const CPubKey& pubkey, int& nHeightRet)
{
AssertLockHeld(cs_main);
Coin coin;
if (!GetUTXOCoin(outpoint, coin)) {
return COLLATERAL_UTXO_NOT_FOUND;
}
if (coin.out.nValue != 25000 * COIN) {
return COLLATERAL_INVALID_AMOUNT;
}
if (pubkey == CPubKey() || coin.out.scriptPubKey != GetScriptForDestination(CScriptID(GetScriptForDestination(WitnessV0KeyHash(pubkey.GetID()))))) {
return COLLATERAL_INVALID_PUBKEY;
}
nHeightRet = coin.nHeight;
return COLLATERAL_OK;
}
bool CTxLockVote::IsValid(CNode* pnode, CConnman& connman) const
{
if(!mnodeman.Has(outpointMasternode)) {
LogPrint("instantsend", "CTxLockVote::IsValid -- Unknown masternode %s\n", outpointMasternode.ToStringShort());
mnodeman.AskForMN(pnode, outpointMasternode, connman);
return false;
}
Coin coin;
if(!GetUTXOCoin(outpoint, coin)) {
LogPrint("instantsend", "CTxLockVote::IsValid -- Failed to find UTXO %s\n", outpoint.ToStringShort());
return false;
}
int nLockInputHeight = coin.nHeight + Params().GetConsensus().nInstantSendConfirmationsRequired - 2;
int nRank;
if(!mnodeman.GetMasternodeRank(outpointMasternode, nRank, nLockInputHeight, MIN_INSTANTSEND_PROTO_VERSION)) {
//can be caused by past versions trying to vote with an invalid protocol
LogPrint("instantsend", "CTxLockVote::IsValid -- Can't calculate rank for masternode %s\n", outpointMasternode.ToStringShort());
return false;
}
LogPrint("instantsend", "CTxLockVote::IsValid -- Masternode %s, rank=%d\n", outpointMasternode.ToStringShort(), nRank);
int nSignaturesTotal = COutPointLock::SIGNATURES_TOTAL;
if(nRank > nSignaturesTotal) {
LogPrint("instantsend", "CTxLockVote::IsValid -- Masternode %s is not in the top %d (%d), vote hash=%s\n",
outpointMasternode.ToStringShort(), nSignaturesTotal, nRank, GetHash().ToString());
return false;
}
if(!CheckSignature()) {
LogPrintf("CTxLockVote::IsValid -- Signature invalid\n");
return false;
}
return true;
}
void CDeterministicMN::ToJson(UniValue& obj) const
{
obj.clear();
obj.setObject();
UniValue stateObj;
pdmnState->ToJson(stateObj);
obj.push_back(Pair("proTxHash", proTxHash.ToString()));
obj.push_back(Pair("collateralHash", collateralOutpoint.hash.ToString()));
obj.push_back(Pair("collateralIndex", (int)collateralOutpoint.n));
Coin coin;
if (GetUTXOCoin(collateralOutpoint, coin)) {
CTxDestination dest;
if (ExtractDestination(coin.out.scriptPubKey, dest)) {
obj.push_back(Pair("collateralAddress", CBitcoinAddress(dest).ToString()));
}
}
obj.push_back(Pair("operatorReward", (double)nOperatorReward / 100));
obj.push_back(Pair("state", stateObj));
}
bool CInstantSend::ResolveConflicts(const CTxLockCandidate& txLockCandidate)
{
LOCK2(cs_main, cs_instantsend);
uint256 txHash = txLockCandidate.GetHash();
// make sure the lock is ready
if(!txLockCandidate.IsAllOutPointsReady()) return false;
AssertLockHeld(mempool.cs); // protect mempool.mapNextTx
for (const auto& txin : txLockCandidate.txLockRequest.tx->vin) {
uint256 hashConflicting;
if(GetLockedOutPointTxHash(txin.prevout, hashConflicting) && txHash != hashConflicting) {
// completed lock which conflicts with another completed one?
// this means that majority of MNs in the quorum for this specific tx input are malicious!
std::map<uint256, CTxLockCandidate>::iterator itLockCandidate = mapTxLockCandidates.find(txHash);
std::map<uint256, CTxLockCandidate>::iterator itLockCandidateConflicting = mapTxLockCandidates.find(hashConflicting);
if(itLockCandidate == mapTxLockCandidates.end() || itLockCandidateConflicting == mapTxLockCandidates.end()) {
// safety check, should never really happen
LogPrintf("CInstantSend::ResolveConflicts -- ERROR: Found conflicting completed Transaction Lock, but one of txLockCandidate-s is missing, txid=%s, conflicting txid=%s\n",
txHash.ToString(), hashConflicting.ToString());
return false;
}
LogPrintf("CInstantSend::ResolveConflicts -- WARNING: Found conflicting completed Transaction Lock, dropping both, txid=%s, conflicting txid=%s\n",
txHash.ToString(), hashConflicting.ToString());
CTxLockRequest txLockRequest = itLockCandidate->second.txLockRequest;
CTxLockRequest txLockRequestConflicting = itLockCandidateConflicting->second.txLockRequest;
itLockCandidate->second.SetConfirmedHeight(0); // expired
itLockCandidateConflicting->second.SetConfirmedHeight(0); // expired
CheckAndRemove(); // clean up
// AlreadyHave should still return "true" for both of them
mapLockRequestRejected.insert(std::make_pair(txHash, txLockRequest));
mapLockRequestRejected.insert(std::make_pair(hashConflicting, txLockRequestConflicting));
// TODO: clean up mapLockRequestRejected later somehow
// (not a big issue since we already PoSe ban malicious masternodes
// and they won't be able to spam)
// TODO: ban all malicious masternodes permanently, do not accept anything from them, ever
// TODO: notify zmq+script about this double-spend attempt
// and let merchant cancel/hold the order if it's not too late...
// can't do anything else, fallback to regular txes
return false;
} else if (mempool.mapNextTx.count(txin.prevout)) {
// check if it's in mempool
hashConflicting = mempool.mapNextTx.find(txin.prevout)->second->GetHash();
if(txHash == hashConflicting) continue; // matches current, not a conflict, skip to next txin
// conflicts with tx in mempool
LogPrintf("CInstantSend::ResolveConflicts -- ERROR: Failed to complete Transaction Lock, conflicts with mempool, txid=%s\n", txHash.ToString());
return false;
}
} // FOREACH
// No conflicts were found so far, check to see if it was already included in block
CTransactionRef txTmp;
uint256 hashBlock;
if(GetTransaction(txHash, txTmp, Params().GetConsensus(), hashBlock, true) && hashBlock != uint256()) {
LogPrint("instantsend", "CInstantSend::ResolveConflicts -- Done, %s is included in block %s\n", txHash.ToString(), hashBlock.ToString());
return true;
}
// Not in block yet, make sure all its inputs are still unspent
for (const auto& txin : txLockCandidate.txLockRequest.tx->vin) {
Coin coin;
if(!GetUTXOCoin(txin.prevout, coin)) {
// Not in UTXO anymore? A conflicting tx was mined while we were waiting for votes.
LogPrintf("CInstantSend::ResolveConflicts -- ERROR: Failed to find UTXO %s, can't complete Transaction Lock\n", txin.prevout.ToStringShort());
return false;
}
}
LogPrint("instantsend", "CInstantSend::ResolveConflicts -- Done, txid=%s\n", txHash.ToString());
return true;
}
bool CheckProRegTx(const CTransaction& tx, const CBlockIndex* pindexPrev, CValidationState& state)
{
if (tx.nType != TRANSACTION_PROVIDER_REGISTER) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-type");
}
CProRegTx ptx;
if (!GetTxPayload(tx, ptx)) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-payload");
}
if (ptx.nVersion == 0 || ptx.nVersion > CProRegTx::CURRENT_VERSION) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-version");
}
if (ptx.nType != 0) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-type");
}
if (ptx.nMode != 0) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-mode");
}
if (ptx.keyIDOwner.IsNull() || !ptx.pubKeyOperator.IsValid() || ptx.keyIDVoting.IsNull()) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-key-null");
}
if (!ptx.scriptPayout.IsPayToPublicKeyHash() && !ptx.scriptPayout.IsPayToScriptHash()) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-payee");
}
CTxDestination payoutDest;
if (!ExtractDestination(ptx.scriptPayout, payoutDest)) {
// should not happen as we checked script types before
return state.DoS(10, false, REJECT_INVALID, "bad-protx-payee-dest");
}
// don't allow reuse of payout key for other keys (don't allow people to put the payee key onto an online server)
if (payoutDest == CTxDestination(ptx.keyIDOwner) || payoutDest == CTxDestination(ptx.keyIDVoting)) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-payee-reuse");
}
// It's allowed to set addr to 0, which will put the MN into PoSe-banned state and require a ProUpServTx to be issues later
// If any of both is set, it must be valid however
if (ptx.addr != CService() && !CheckService(tx.GetHash(), ptx, state)) {
return false;
}
if (ptx.nOperatorReward > 10000) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-operator-reward");
}
CTxDestination collateralTxDest;
CKeyID keyForPayloadSig;
COutPoint collateralOutpoint;
if (!ptx.collateralOutpoint.hash.IsNull()) {
Coin coin;
if (!GetUTXOCoin(ptx.collateralOutpoint, coin) || coin.out.nValue != 1000 * COIN) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-collateral");
}
if (!ExtractDestination(coin.out.scriptPubKey, collateralTxDest)) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-collateral-dest");
}
// Extract key from collateral. This only works for P2PK and P2PKH collaterals and will fail for P2SH.
// Issuer of this ProRegTx must prove ownership with this key by signing the ProRegTx
if (!CBitcoinAddress(collateralTxDest).GetKeyID(keyForPayloadSig)) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-collateral-pkh");
}
collateralOutpoint = ptx.collateralOutpoint;
} else {
if (ptx.collateralOutpoint.n >= tx.vout.size()) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-collateral-index");
}
if (tx.vout[ptx.collateralOutpoint.n].nValue != 1000 * COIN) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-collateral");
}
if (!ExtractDestination(tx.vout[ptx.collateralOutpoint.n].scriptPubKey, collateralTxDest)) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-collateral-dest");
}
collateralOutpoint = COutPoint(tx.GetHash(), ptx.collateralOutpoint.n);
}
// don't allow reuse of collateral key for other keys (don't allow people to put the collateral key onto an online server)
// this check applies to internal and external collateral, but internal collaterals are not necessarely a P2PKH
if (collateralTxDest == CTxDestination(ptx.keyIDOwner) || collateralTxDest == CTxDestination(ptx.keyIDVoting)) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-collateral-reuse");
}
if (pindexPrev) {
auto mnList = deterministicMNManager->GetListForBlock(pindexPrev->GetBlockHash());
// only allow reusing of addresses when it's for the same collateral (which replaces the old MN)
if (mnList.HasUniqueProperty(ptx.addr) && mnList.GetUniquePropertyMN(ptx.addr)->collateralOutpoint != collateralOutpoint) {
return state.DoS(10, false, REJECT_DUPLICATE, "bad-protx-dup-addr");
}
// never allow duplicate keys, even if this ProTx would replace an existing MN
if (mnList.HasUniqueProperty(ptx.keyIDOwner) || mnList.HasUniqueProperty(ptx.pubKeyOperator)) {
return state.DoS(10, false, REJECT_DUPLICATE, "bad-protx-dup-key");
}
if (!deterministicMNManager->IsDIP3Enforced(pindexPrev->nHeight)) {
if (ptx.keyIDOwner != ptx.keyIDVoting) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-key-not-same");
}
}
}
if (!CheckInputsHash(tx, ptx, state)) {
return false;
}
if (!keyForPayloadSig.IsNull()) {
// collateral is not part of this ProRegTx, so we must verify ownership of the collateral
if (!CheckStringSig(ptx, keyForPayloadSig, state)) {
return false;
}
} else {
// collateral is part of this ProRegTx, so we know the collateral is owned by the issuer
if (!ptx.vchSig.empty()) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-sig");
}
}
return true;
}
bool CheckProUpRegTx(const CTransaction& tx, const CBlockIndex* pindexPrev, CValidationState& state)
{
if (tx.nType != TRANSACTION_PROVIDER_UPDATE_REGISTRAR) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-type");
}
CProUpRegTx ptx;
if (!GetTxPayload(tx, ptx)) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-payload");
}
if (ptx.nVersion == 0 || ptx.nVersion > CProRegTx::CURRENT_VERSION) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-version");
}
if (ptx.nMode != 0) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-mode");
}
if (!ptx.pubKeyOperator.IsValid() || ptx.keyIDVoting.IsNull()) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-key-null");
}
if (!ptx.scriptPayout.IsPayToPublicKeyHash() && !ptx.scriptPayout.IsPayToScriptHash()) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-payee");
}
CTxDestination payoutDest;
if (!ExtractDestination(ptx.scriptPayout, payoutDest)) {
// should not happen as we checked script types before
return state.DoS(10, false, REJECT_INVALID, "bad-protx-payee-dest");
}
if (pindexPrev) {
auto mnList = deterministicMNManager->GetListForBlock(pindexPrev->GetBlockHash());
auto dmn = mnList.GetMN(ptx.proTxHash);
if (!dmn) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-hash");
}
// don't allow reuse of payee key for other keys (don't allow people to put the payee key onto an online server)
if (payoutDest == CTxDestination(dmn->pdmnState->keyIDOwner) || payoutDest == CTxDestination(ptx.keyIDVoting)) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-payee-reuse");
}
Coin coin;
if (!GetUTXOCoin(dmn->collateralOutpoint, coin)) {
// this should never happen (there would be no dmn otherwise)
return state.DoS(100, false, REJECT_INVALID, "bad-protx-collateral");
}
// don't allow reuse of collateral key for other keys (don't allow people to put the collateral key onto an online server)
CTxDestination collateralTxDest;
if (!ExtractDestination(coin.out.scriptPubKey, collateralTxDest)) {
return state.DoS(100, false, REJECT_INVALID, "bad-protx-collateral-dest");
}
if (collateralTxDest == CTxDestination(dmn->pdmnState->keyIDOwner) || collateralTxDest == CTxDestination(ptx.keyIDVoting)) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-collateral-reuse");
}
if (mnList.HasUniqueProperty(ptx.pubKeyOperator)) {
auto otherDmn = mnList.GetUniquePropertyMN(ptx.pubKeyOperator);
if (ptx.proTxHash != otherDmn->proTxHash) {
return state.DoS(10, false, REJECT_DUPLICATE, "bad-protx-dup-key");
}
}
if (!deterministicMNManager->IsDIP3Enforced(pindexPrev->nHeight)) {
if (dmn->pdmnState->keyIDOwner != ptx.keyIDVoting) {
return state.DoS(10, false, REJECT_INVALID, "bad-protx-key-not-same");
}
}
if (!CheckInputsHash(tx, ptx, state)) {
return false;
}
if (!CheckHashSig(ptx, dmn->pdmnState->keyIDOwner, state)) {
return false;
}
}
return true;
}
bool CDeterministicMNManager::BuildNewListFromBlock(const CBlock& block, const CBlockIndex* pindexPrev, CValidationState& _state, CDeterministicMNList& mnListRet, bool debugLogs)
{
AssertLockHeld(cs);
int nHeight = pindexPrev->nHeight + 1;
CDeterministicMNList oldList = GetListForBlock(pindexPrev->GetBlockHash());
CDeterministicMNList newList = oldList;
newList.SetBlockHash(uint256()); // we can't know the final block hash, so better not return a (invalid) block hash
newList.SetHeight(nHeight);
auto payee = oldList.GetMNPayee();
// we iterate the oldList here and update the newList
// this is only valid as long these have not diverged at this point, which is the case as long as we don't add
// code above this loop that modifies newList
oldList.ForEachMN(false, [&](const CDeterministicMNCPtr& dmn) {
if (!dmn->pdmnState->confirmedHash.IsNull()) {
// already confirmed
return;
}
// this works on the previous block, so confirmation will happen one block after nMasternodeMinimumConfirmations
// has been reached, but the block hash will then point to the block at nMasternodeMinimumConfirmations
int nConfirmations = pindexPrev->nHeight - dmn->pdmnState->nRegisteredHeight;
if (nConfirmations >= Params().GetConsensus().nMasternodeMinimumConfirmations) {
CDeterministicMNState newState = *dmn->pdmnState;
newState.UpdateConfirmedHash(dmn->proTxHash, pindexPrev->GetBlockHash());
newList.UpdateMN(dmn->proTxHash, std::make_shared<CDeterministicMNState>(newState));
}
});
DecreasePoSePenalties(newList);
// we skip the coinbase
for (int i = 1; i < (int)block.vtx.size(); i++) {
const CTransaction& tx = *block.vtx[i];
if (tx.nVersion != 3) {
// only interested in special TXs
continue;
}
if (tx.nType == TRANSACTION_PROVIDER_REGISTER) {
CProRegTx proTx;
if (!GetTxPayload(tx, proTx)) {
assert(false); // this should have been handled already
}
auto dmn = std::make_shared<CDeterministicMN>();
dmn->proTxHash = tx.GetHash();
// collateralOutpoint is either pointing to an external collateral or to the ProRegTx itself
if (proTx.collateralOutpoint.hash.IsNull()) {
dmn->collateralOutpoint = COutPoint(tx.GetHash(), proTx.collateralOutpoint.n);
} else {
dmn->collateralOutpoint = proTx.collateralOutpoint;
}
Coin coin;
if (!proTx.collateralOutpoint.hash.IsNull() && (!GetUTXOCoin(dmn->collateralOutpoint, coin) || coin.out.nValue != 1000 * COIN)) {
// should actually never get to this point as CheckProRegTx should have handled this case.
// We do this additional check nevertheless to be 100% sure
return _state.DoS(100, false, REJECT_INVALID, "bad-protx-collateral");
}
auto replacedDmn = newList.GetMNByCollateral(dmn->collateralOutpoint);
if (replacedDmn != nullptr) {
// This might only happen with a ProRegTx that refers an external collateral
// In that case the new ProRegTx will replace the old one. This means the old one is removed
// and the new one is added like a completely fresh one, which is also at the bottom of the payment list
newList.RemoveMN(replacedDmn->proTxHash);
if (debugLogs) {
LogPrintf("CDeterministicMNManager::%s -- MN %s removed from list because collateral was used for a new ProRegTx. collateralOutpoint=%s, nHeight=%d, mapCurMNs.allMNsCount=%d\n",
__func__, replacedDmn->proTxHash.ToString(), dmn->collateralOutpoint.ToStringShort(), nHeight, newList.GetAllMNsCount());
}
}
if (newList.HasUniqueProperty(proTx.addr)) {
return _state.DoS(100, false, REJECT_CONFLICT, "bad-protx-dup-addr");
}
if (newList.HasUniqueProperty(proTx.keyIDOwner) || newList.HasUniqueProperty(proTx.pubKeyOperator)) {
return _state.DoS(100, false, REJECT_CONFLICT, "bad-protx-dup-key");
}
dmn->nOperatorReward = proTx.nOperatorReward;
dmn->pdmnState = std::make_shared<CDeterministicMNState>(proTx);
CDeterministicMNState dmnState = *dmn->pdmnState;
dmnState.nRegisteredHeight = nHeight;
if (proTx.addr == CService()) {
// start in banned pdmnState as we need to wait for a ProUpServTx
dmnState.nPoSeBanHeight = nHeight;
}
dmn->pdmnState = std::make_shared<CDeterministicMNState>(dmnState);
newList.AddMN(dmn);
if (debugLogs) {
LogPrintf("CDeterministicMNManager::%s -- MN %s added at height %d: %s\n",
__func__, tx.GetHash().ToString(), nHeight, proTx.ToString());
}
} else if (tx.nType == TRANSACTION_PROVIDER_UPDATE_SERVICE) {
CProUpServTx proTx;
if (!GetTxPayload(tx, proTx)) {
assert(false); // this should have been handled already
}
if (newList.HasUniqueProperty(proTx.addr) && newList.GetUniquePropertyMN(proTx.addr)->proTxHash != proTx.proTxHash) {
return _state.DoS(100, false, REJECT_CONFLICT, "bad-protx-dup-addr");
}
CDeterministicMNCPtr dmn = newList.GetMN(proTx.proTxHash);
if (!dmn) {
return _state.DoS(100, false, REJECT_INVALID, "bad-protx-hash");
}
auto newState = std::make_shared<CDeterministicMNState>(*dmn->pdmnState);
newState->addr = proTx.addr;
newState->scriptOperatorPayout = proTx.scriptOperatorPayout;
if (newState->nPoSeBanHeight != -1) {
// only revive when all keys are set
if (newState->pubKeyOperator.IsValid() && !newState->keyIDVoting.IsNull() && !newState->keyIDOwner.IsNull()) {
newState->nPoSePenalty = 0;
newState->nPoSeBanHeight = -1;
newState->nPoSeRevivedHeight = nHeight;
if (debugLogs) {
LogPrintf("CDeterministicMNManager::%s -- MN %s revived at height %d\n",
__func__, proTx.proTxHash.ToString(), nHeight);
}
}
}
newList.UpdateMN(proTx.proTxHash, newState);
if (debugLogs) {
LogPrintf("CDeterministicMNManager::%s -- MN %s updated at height %d: %s\n",
__func__, proTx.proTxHash.ToString(), nHeight, proTx.ToString());
}
} else if (tx.nType == TRANSACTION_PROVIDER_UPDATE_REGISTRAR) {
CProUpRegTx proTx;
if (!GetTxPayload(tx, proTx)) {
assert(false); // this should have been handled already
}
CDeterministicMNCPtr dmn = newList.GetMN(proTx.proTxHash);
if (!dmn) {
return _state.DoS(100, false, REJECT_INVALID, "bad-protx-hash");
}
auto newState = std::make_shared<CDeterministicMNState>(*dmn->pdmnState);
if (newState->pubKeyOperator != proTx.pubKeyOperator) {
// reset all operator related fields and put MN into PoSe-banned state in case the operator key changes
newState->ResetOperatorFields();
newState->BanIfNotBanned(nHeight);
}
newState->pubKeyOperator = proTx.pubKeyOperator;
newState->keyIDVoting = proTx.keyIDVoting;
newState->scriptPayout = proTx.scriptPayout;
newList.UpdateMN(proTx.proTxHash, newState);
if (debugLogs) {
LogPrintf("CDeterministicMNManager::%s -- MN %s updated at height %d: %s\n",
__func__, proTx.proTxHash.ToString(), nHeight, proTx.ToString());
}
} else if (tx.nType == TRANSACTION_PROVIDER_UPDATE_REVOKE) {
CProUpRevTx proTx;
if (!GetTxPayload(tx, proTx)) {
assert(false); // this should have been handled already
}
CDeterministicMNCPtr dmn = newList.GetMN(proTx.proTxHash);
if (!dmn) {
return _state.DoS(100, false, REJECT_INVALID, "bad-protx-hash");
}
auto newState = std::make_shared<CDeterministicMNState>(*dmn->pdmnState);
newState->ResetOperatorFields();
newState->BanIfNotBanned(nHeight);
newState->nRevocationReason = proTx.nReason;
newList.UpdateMN(proTx.proTxHash, newState);
if (debugLogs) {
LogPrintf("CDeterministicMNManager::%s -- MN %s revoked operator key at height %d: %s\n",
__func__, proTx.proTxHash.ToString(), nHeight, proTx.ToString());
}
} else if (tx.nType == TRANSACTION_QUORUM_COMMITMENT) {
llmq::CFinalCommitmentTxPayload qc;
if (!GetTxPayload(tx, qc)) {
assert(false); // this should have been handled already
}
if (!qc.commitment.IsNull()) {
HandleQuorumCommitment(qc.commitment, newList, debugLogs);
}
}
}
// we skip the coinbase
for (int i = 1; i < (int)block.vtx.size(); i++) {
const CTransaction& tx = *block.vtx[i];
// check if any existing MN collateral is spent by this transaction
for (const auto& in : tx.vin) {
auto dmn = newList.GetMNByCollateral(in.prevout);
if (dmn && dmn->collateralOutpoint == in.prevout) {
newList.RemoveMN(dmn->proTxHash);
if (debugLogs) {
LogPrintf("CDeterministicMNManager::%s -- MN %s removed from list because collateral was spent. collateralOutpoint=%s, nHeight=%d, mapCurMNs.allMNsCount=%d\n",
__func__, dmn->proTxHash.ToString(), dmn->collateralOutpoint.ToStringShort(), nHeight, newList.GetAllMNsCount());
}
}
}
}
// The payee for the current block was determined by the previous block's list but it might have disappeared in the
// current block. We still pay that MN one last time however.
if (payee && newList.HasMN(payee->proTxHash)) {
auto newState = std::make_shared<CDeterministicMNState>(*newList.GetMN(payee->proTxHash)->pdmnState);
newState->nLastPaidHeight = nHeight;
newList.UpdateMN(payee->proTxHash, newState);
}
mnListRet = std::move(newList);
return true;
}
void CMasternode::Check(bool fForce)
{
AssertLockHeld(cs_main);
LOCK(cs);
if (ShutdownRequested()) return;
if (!fForce && (GetTime() - nTimeLastChecked < MASTERNODE_CHECK_SECONDS)) return;
nTimeLastChecked = GetTime();
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state\n", outpoint.ToStringShort(), GetStateString());
//once spent, stop doing the checks
if (IsOutpointSpent()) return;
int nHeight = 0;
if (!fUnitTest) {
Coin coin;
if (!GetUTXOCoin(outpoint, coin)) {
nActiveState = MASTERNODE_OUTPOINT_SPENT;
LogPrint(MCLog::MN, "CMasternode::Check -- Failed to find Masternode UTXO, masternode=%s\n", outpoint.ToStringShort());
return;
}
nHeight = chainActive.Height();
}
if (IsPoSeBanned()) {
if (nHeight < nPoSeBanHeight) return; // too early?
// Otherwise give it a chance to proceed further to do all the usual checks and to change its state.
// Masternode still will be on the edge and can be banned back easily if it keeps ignoring mnverify
// or connect attempts. Will require few mnverify messages to strengthen its position in mn list.
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is unbanned and back in list now\n", outpoint.ToStringShort());
DecreasePoSeBanScore();
} else if (nPoSeBanScore >= MASTERNODE_POSE_BAN_MAX_SCORE) {
nActiveState = MASTERNODE_POSE_BAN;
// ban for the whole payment cycle
nPoSeBanHeight = nHeight + mnodeman.size();
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is banned till block %d now\n", outpoint.ToStringShort(), nPoSeBanHeight);
return;
}
int nActiveStatePrev = nActiveState;
bool fOurMasternode = fMasternodeMode && activeMasternode.pubKeyMasternode == pubKeyMasternode;
// masternode doesn't meet payment protocol requirements ...
bool fRequireUpdate = nProtocolVersion < mnpayments.GetMinMasternodePaymentsProto() ||
// or it's our own node and we just updated it to the new protocol but we are still waiting for activation ...
(fOurMasternode && nProtocolVersion < PROTOCOL_VERSION);
if (fRequireUpdate) {
nActiveState = MASTERNODE_UPDATE_REQUIRED;
if (nActiveStatePrev != nActiveState) {
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state now\n", outpoint.ToStringShort(), GetStateString());
}
return;
}
// keep old masternodes on start, give them a chance to receive updates...
bool fWaitForPing = !masternodeSync.IsMasternodeListSynced() && !IsPingedWithin(MASTERNODE_MIN_MNP_SECONDS);
if (fWaitForPing && !fOurMasternode) {
// ...but if it was already expired before the initial check - return right away
if (IsExpired() || IsSentinelPingExpired() || IsNewStartRequired()) {
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state, waiting for ping\n", outpoint.ToStringShort(), GetStateString());
return;
}
}
// don't expire if we are still in "waiting for ping" mode unless it's our own masternode
if (!fWaitForPing || fOurMasternode) {
if (!IsPingedWithin(MASTERNODE_NEW_START_REQUIRED_SECONDS)) {
nActiveState = MASTERNODE_NEW_START_REQUIRED;
if (nActiveStatePrev != nActiveState) {
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state now\n", outpoint.ToStringShort(), GetStateString());
}
return;
}
if (!IsPingedWithin(MASTERNODE_EXPIRATION_SECONDS)) {
nActiveState = MASTERNODE_EXPIRED;
if (nActiveStatePrev != nActiveState) {
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state now\n", outpoint.ToStringShort(), GetStateString());
}
return;
}
// part 1: expire based on machinecoind ping
bool fSentinelPingActive = masternodeSync.IsSynced() && mnodeman.IsSentinelPingActive();
bool fSentinelPingExpired = fSentinelPingActive && !IsPingedWithin(MASTERNODE_SENTINEL_PING_MAX_SECONDS);
LogPrint(MCLog::MN, "CMasternode::Check -- outpoint=%s, GetAdjustedTime()=%d, fSentinelPingExpired=%d\n",
outpoint.ToStringShort(), GetAdjustedTime(), fSentinelPingExpired);
if (fSentinelPingExpired) {
nActiveState = MASTERNODE_SENTINEL_PING_EXPIRED;
if (nActiveStatePrev != nActiveState) {
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state now\n", outpoint.ToStringShort(), GetStateString());
}
return;
}
}
// We require MNs to be in PRE_ENABLED until they either start to expire or receive a ping and go into ENABLED state
// Works on mainnet/testnet only and not the case on regtest.
if (Params().NetworkIDString() != CBaseChainParams::REGTEST) {
if (lastPing.sigTime - sigTime < MASTERNODE_MIN_MNP_SECONDS) {
nActiveState = MASTERNODE_PRE_ENABLED;
if (nActiveStatePrev != nActiveState) {
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state now\n", outpoint.ToStringShort(), GetStateString());
}
return;
}
}
if (!fWaitForPing || fOurMasternode) {
// part 2: expire based on sentinel info
bool fSentinelPingActive = masternodeSync.IsSynced() && mnodeman.IsSentinelPingActive();
bool fSentinelPingExpired = fSentinelPingActive && !lastPing.fSentinelIsCurrent;
LogPrint(MCLog::MN, "CMasternode::Check -- outpoint=%s, GetAdjustedTime()=%d, fSentinelPingExpired=%d\n",
outpoint.ToStringShort(), GetAdjustedTime(), fSentinelPingExpired);
if (fSentinelPingExpired) {
nActiveState = MASTERNODE_SENTINEL_PING_EXPIRED;
if (nActiveStatePrev != nActiveState) {
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state now\n", outpoint.ToStringShort(), GetStateString());
}
return;
}
}
nActiveState = MASTERNODE_ENABLED; // OK
if (nActiveStatePrev != nActiveState) {
LogPrint(MCLog::MN, "CMasternode::Check -- Masternode %s is in %s state now\n", outpoint.ToStringShort(), GetStateString());
}
}
