예제 #1
0
bool CGovernanceObject::ProcessVote(CNode* pfrom,
                                    const CGovernanceVote& vote,
                                    CGovernanceException& exception,
                                    CConnman& connman)
{
    LOCK(cs);

    // do not process already known valid votes twice
    if (fileVotes.HasVote(vote.GetHash())) {
        // nothing to do here, not an error
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Already known valid vote";
        LogPrint("gobject", "%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_NONE);
        return false;
    }

    if(!mnodeman.Has(vote.GetMasternodeOutpoint())) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Masternode " << vote.GetMasternodeOutpoint().ToStringShort() << " not found";
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_WARNING);
        if(cmmapOrphanVotes.Insert(vote.GetMasternodeOutpoint(), vote_time_pair_t(vote, GetAdjustedTime() + GOVERNANCE_ORPHAN_EXPIRATION_TIME))) {
            if(pfrom) {
                mnodeman.AskForMN(pfrom, vote.GetMasternodeOutpoint(), connman);
            }
            LogPrintf("%s\n", ostr.str());
        }
        else {
            LogPrint("gobject", "%s\n", ostr.str());
        }
        return false;
    }

    vote_m_it it = mapCurrentMNVotes.emplace(vote_m_t::value_type(vote.GetMasternodeOutpoint(), vote_rec_t())).first;
    vote_rec_t& voteRecordRef = it->second;
    vote_signal_enum_t eSignal = vote.GetSignal();
    if(eSignal == VOTE_SIGNAL_NONE) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Vote signal: none";
        LogPrint("gobject", "%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_WARNING);
        return false;
    }
    if(eSignal > MAX_SUPPORTED_VOTE_SIGNAL) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Unsupported vote signal: " << CGovernanceVoting::ConvertSignalToString(vote.GetSignal());
        LogPrintf("%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_PERMANENT_ERROR, 20);
        return false;
    }
    vote_instance_m_it it2 = voteRecordRef.mapInstances.emplace(vote_instance_m_t::value_type(int(eSignal), vote_instance_t())).first;
    vote_instance_t& voteInstanceRef = it2->second;

    // Reject obsolete votes
    if(vote.GetTimestamp() < voteInstanceRef.nCreationTime) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Obsolete vote";
        LogPrint("gobject", "%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_NONE);
        return false;
    }

    int64_t nNow = GetAdjustedTime();
    int64_t nVoteTimeUpdate = voteInstanceRef.nTime;
    if(governance.AreRateChecksEnabled()) {
        int64_t nTimeDelta = nNow - voteInstanceRef.nTime;
        if(nTimeDelta < GOVERNANCE_UPDATE_MIN) {
            std::ostringstream ostr;
            ostr << "CGovernanceObject::ProcessVote -- Masternode voting too often"
                 << ", MN outpoint = " << vote.GetMasternodeOutpoint().ToStringShort()
                 << ", governance object hash = " << GetHash().ToString()
                 << ", time delta = " << nTimeDelta;
            LogPrint("gobject", "%s\n", ostr.str());
            exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_TEMPORARY_ERROR);
            nVoteTimeUpdate = nNow;
            return false;
        }
    }

    // Finally check that the vote is actually valid (done last because of cost of signature verification)
    if(!vote.IsValid(true)) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Invalid vote"
                << ", MN outpoint = " << vote.GetMasternodeOutpoint().ToStringShort()
                << ", governance object hash = " << GetHash().ToString()
                << ", vote hash = " << vote.GetHash().ToString();
        LogPrintf("%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_PERMANENT_ERROR, 20);
        governance.AddInvalidVote(vote);
        return false;
    }

    if(!mnodeman.AddGovernanceVote(vote.GetMasternodeOutpoint(), vote.GetParentHash())) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Unable to add governance vote"
             << ", MN outpoint = " << vote.GetMasternodeOutpoint().ToStringShort()
             << ", governance object hash = " << GetHash().ToString();
        LogPrint("gobject", "%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_PERMANENT_ERROR);
        return false;
    }

    voteInstanceRef = vote_instance_t(vote.GetOutcome(), nVoteTimeUpdate, vote.GetTimestamp());
    fileVotes.AddVote(vote);
    fDirtyCache = true;
    return true;
}
예제 #2
0
bool CGovernanceObject::ProcessVote(CNode* pfrom,
    const CGovernanceVote& vote,
    CGovernanceException& exception,
    CConnman& connman)
{
    LOCK(cs);

    // do not process already known valid votes twice
    if (fileVotes.HasVote(vote.GetHash())) {
        // nothing to do here, not an error
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Already known valid vote";
        LogPrint("gobject", "%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_NONE);
        return false;
    }

    auto mnList = deterministicMNManager->GetListAtChainTip();
    auto dmn = mnList.GetValidMNByCollateral(vote.GetMasternodeOutpoint());

    if (!dmn) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Masternode " << vote.GetMasternodeOutpoint().ToStringShort() << " not found";
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_WARNING);
        if (cmmapOrphanVotes.Insert(vote.GetMasternodeOutpoint(), vote_time_pair_t(vote, GetAdjustedTime() + GOVERNANCE_ORPHAN_EXPIRATION_TIME))) {
            LogPrintf("%s\n", ostr.str());
        } else {
            LogPrint("gobject", "%s\n", ostr.str());
        }
        return false;
    }

    vote_m_it it = mapCurrentMNVotes.emplace(vote_m_t::value_type(vote.GetMasternodeOutpoint(), vote_rec_t())).first;
    vote_rec_t& voteRecordRef = it->second;
    vote_signal_enum_t eSignal = vote.GetSignal();
    if (eSignal == VOTE_SIGNAL_NONE) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Vote signal: none";
        LogPrint("gobject", "%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_WARNING);
        return false;
    }
    if (eSignal > MAX_SUPPORTED_VOTE_SIGNAL) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Unsupported vote signal: " << CGovernanceVoting::ConvertSignalToString(vote.GetSignal());
        LogPrintf("%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_PERMANENT_ERROR, 20);
        return false;
    }
    vote_instance_m_it it2 = voteRecordRef.mapInstances.emplace(vote_instance_m_t::value_type(int(eSignal), vote_instance_t())).first;
    vote_instance_t& voteInstanceRef = it2->second;

    // Reject obsolete votes
    if (vote.GetTimestamp() < voteInstanceRef.nCreationTime) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Obsolete vote";
        LogPrint("gobject", "%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_NONE);
        return false;
    } else if (vote.GetTimestamp() == voteInstanceRef.nCreationTime) {
        // Someone is doing smth fishy, there can be no two votes from the same masternode
        // with the same timestamp for the same object and signal and yet different hash/outcome.
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Invalid vote, same timestamp for the different outcome";
        if (vote.GetOutcome() < voteInstanceRef.eOutcome) {
            // This is an arbitrary comparison, we have to agree on some way
            // to pick the "winning" vote.
            ostr << ", rejected";
            LogPrint("gobject", "%s\n", ostr.str());
            exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_NONE);
            return false;
        }
        ostr << ", accepted";
        LogPrint("gobject", "%s\n", ostr.str());
    }

    int64_t nNow = GetAdjustedTime();
    int64_t nVoteTimeUpdate = voteInstanceRef.nTime;
    if (governance.AreRateChecksEnabled()) {
        int64_t nTimeDelta = nNow - voteInstanceRef.nTime;
        if (nTimeDelta < GOVERNANCE_UPDATE_MIN) {
            std::ostringstream ostr;
            ostr << "CGovernanceObject::ProcessVote -- Masternode voting too often"
                 << ", MN outpoint = " << vote.GetMasternodeOutpoint().ToStringShort()
                 << ", governance object hash = " << GetHash().ToString()
                 << ", time delta = " << nTimeDelta;
            LogPrint("gobject", "%s\n", ostr.str());
            exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_TEMPORARY_ERROR);
            return false;
        }
        nVoteTimeUpdate = nNow;
    }

    bool onlyVotingKeyAllowed = nObjectType == GOVERNANCE_OBJECT_PROPOSAL && vote.GetSignal() == VOTE_SIGNAL_FUNDING;

    // Finally check that the vote is actually valid (done last because of cost of signature verification)
    if (!vote.IsValid(onlyVotingKeyAllowed)) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Invalid vote"
             << ", MN outpoint = " << vote.GetMasternodeOutpoint().ToStringShort()
             << ", governance object hash = " << GetHash().ToString()
             << ", vote hash = " << vote.GetHash().ToString();
        LogPrintf("%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_PERMANENT_ERROR, 20);
        governance.AddInvalidVote(vote);
        return false;
    }

    if (!mmetaman.AddGovernanceVote(dmn->proTxHash, vote.GetParentHash())) {
        std::ostringstream ostr;
        ostr << "CGovernanceObject::ProcessVote -- Unable to add governance vote"
             << ", MN outpoint = " << vote.GetMasternodeOutpoint().ToStringShort()
             << ", governance object hash = " << GetHash().ToString();
        LogPrint("gobject", "%s\n", ostr.str());
        exception = CGovernanceException(ostr.str(), GOVERNANCE_EXCEPTION_PERMANENT_ERROR);
        return false;
    }

    voteInstanceRef = vote_instance_t(vote.GetOutcome(), nVoteTimeUpdate, vote.GetTimestamp());
    fileVotes.AddVote(vote);
    fDirtyCache = true;
    return true;
}