562 lines
18 KiB
C++
562 lines
18 KiB
C++
// Copyright (c) 2014-2015 The Dash developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "masternode-payments.h"
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#include "masternode-budget.h"
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#include "masternodeman.h"
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#include "darksend.h"
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#include "util.h"
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#include "sync.h"
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#include "spork.h"
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#include "addrman.h"
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#include <boost/lexical_cast.hpp>
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CCriticalSection cs_masternodepayments;
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/** Object for who's going to get paid on which blocks */
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CMasternodePayments masternodePayments;
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map<uint256, CMasternodePaymentWinner> mapMasternodePayeeVotes;
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map<uint256, CMasternodeBlockPayees> mapMasternodeBlocks;
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bool IsBlockValueValid(int64_t nBlockValue, int64_t nExpectedValue){
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CBlockIndex* pindexPrev = chainActive.Tip();
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if(pindexPrev == NULL) return true;
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//while syncing take the longest chain
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if (fImporting || fReindex || pindexPrev->nHeight+1 < Checkpoints::GetTotalBlocksEstimate()) {
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//super blocks will always be on these blocks, max 100 per budgeting
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if((pindexPrev->nHeight+1) % GetBudgetPaymentCycleBlocks() < 100){
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return true;
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} else {
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if(nBlockValue > nExpectedValue) return false;
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}
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} else { // we're synced so check the budget schedule
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if(budget.IsBudgetPaymentBlock(pindexPrev->nHeight+1)){
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//the value of the block is evaluated in CheckBlock
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return true;
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} else {
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if(nBlockValue > nExpectedValue) return false;
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}
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}
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return true;
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}
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bool IsBlockPayeeValid(const CTransaction& txNew, int64_t nBlockHeight)
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{
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//check if it's a budget block
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if(budget.IsBudgetPaymentBlock(nBlockHeight)){
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if(budget.IsTransactionValid(txNew, nBlockHeight)){
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return true;
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} else {
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LogPrintf("Invalid budget payment detected %s\n", txNew.ToString().c_str());
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if(IsSporkActive(SPORK_9_MASTERNODE_BUDGET_ENFORCEMENT)){
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return false;
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} else {
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LogPrintf("Budget enforcement is disabled, accepting block");
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return true;
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}
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}
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}
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//check for masternode payee
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if(masternodePayments.IsTransactionValid(txNew, nBlockHeight))
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{
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return true;
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} else {
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LogPrintf("Invalid mn payment detected %s\n", txNew.ToString().c_str());
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if(IsSporkActive(SPORK_8_MASTERNODE_PAYMENT_ENFORCEMENT)){
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return false;
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} else {
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LogPrintf("Masternode payment enforcement is disabled, accepting block");
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return true;
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}
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}
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return false;
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}
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void FillBlockPayee(CMutableTransaction& txNew, int64_t nFees)
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{
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CBlockIndex* pindexPrev = chainActive.Tip();
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if(!pindexPrev) return;
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if(budget.IsBudgetPaymentBlock(pindexPrev->nHeight+1)){
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budget.FillBlockPayee(txNew, nFees);
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} else {
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masternodePayments.FillBlockPayee(txNew, nFees);
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}
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}
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std::string GetRequiredPaymentsString(int64_t nBlockHeight)
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{
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if(budget.IsBudgetPaymentBlock(nBlockHeight)){
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return budget.GetRequiredPaymentsString(nBlockHeight);
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} else {
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return masternodePayments.GetRequiredPaymentsString(nBlockHeight);
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}
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}
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void CMasternodePayments::FillBlockPayee(CMutableTransaction& txNew, int64_t nFees)
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{
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CBlockIndex* pindexPrev = chainActive.Tip();
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if(!pindexPrev) return;
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bool hasPayment = true;
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CScript payee;
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//spork
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if(!masternodePayments.GetBlockPayee(pindexPrev->nHeight+1, payee)){
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//no masternode detected
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CMasternode* winningNode = mnodeman.GetCurrentMasterNode(1);
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if(winningNode){
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payee = GetScriptForDestination(winningNode->pubkey.GetID());
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} else {
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LogPrintf("CreateNewBlock: Failed to detect masternode to pay\n");
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hasPayment = false;
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}
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}
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CAmount blockValue = GetBlockValue(pindexPrev->nBits, pindexPrev->nHeight, nFees);
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CAmount masternodePayment = GetMasternodePayment(pindexPrev->nHeight+1, blockValue);
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txNew.vout[0].nValue = blockValue;
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if(hasPayment){
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txNew.vout.resize(2);
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txNew.vout[1].scriptPubKey = payee;
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txNew.vout[1].nValue = masternodePayment;
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txNew.vout[0].nValue -= masternodePayment;
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CTxDestination address1;
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ExtractDestination(payee, address1);
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CBitcoinAddress address2(address1);
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LogPrintf("Masternode payment to %s\n", address2.ToString().c_str());
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}
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}
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void CMasternodePayments::ProcessMessageMasternodePayments(CNode* pfrom, std::string& strCommand, CDataStream& vRecv)
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{
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if(IsInitialBlockDownload()) return;
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if (strCommand == "mnget") { //Masternode Payments Request Sync
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if(fLiteMode) return; //disable all Darksend/Masternode related functionality
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if(pfrom->HasFulfilledRequest("mnget")) {
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LogPrintf("mnget - peer already asked me for the list\n");
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Misbehaving(pfrom->GetId(), 20);
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return;
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}
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pfrom->FulfilledRequest("mnget");
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masternodePayments.Sync(pfrom);
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LogPrintf("mnget - Sent Masternode winners to %s\n", pfrom->addr.ToString().c_str());
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}
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else if (strCommand == "mnw") { //Masternode Payments Declare Winner
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LOCK(cs_masternodepayments);
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//this is required in litemodef
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CMasternodePaymentWinner winner;
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vRecv >> winner;
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if(chainActive.Tip() == NULL) return;
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if(mapMasternodePayeeVotes.count(winner.GetHash())){
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if(fDebug) LogPrintf("mnw - Already seen - %s bestHeight %d\n", winner.GetHash().ToString().c_str(), chainActive.Tip()->nHeight);
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return;
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}
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if(winner.nBlockHeight < chainActive.Tip()->nHeight - 10 || winner.nBlockHeight > chainActive.Tip()->nHeight+20){
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LogPrintf("mnw - winner out of range - Height %d bestHeight %d\n", winner.nBlockHeight, chainActive.Tip()->nHeight);
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return;
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}
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if(!winner.IsValid()){
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LogPrintf("mnw - invalid message\n");
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return;
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}
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if(!winner.SignatureValid()){
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LogPrintf("mnw - invalid signature\n");
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Misbehaving(pfrom->GetId(), 100);
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return;
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}
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CTxDestination address1;
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ExtractDestination(winner.payee.scriptPubKey, address1);
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CBitcoinAddress address2(address1);
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if(fDebug) LogPrintf("mnw - winning vote - Addr %s Height %d bestHeight %d\n", address2.ToString().c_str(), winner.nBlockHeight, chainActive.Tip()->nHeight);
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if(masternodePayments.AddWinningMasternode(winner)){
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winner.Relay();
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}
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}
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}
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bool CMasternodePaymentWinner::Sign(CKey& keyMasternode, CPubKey& pubKeyMasternode)
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{
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std::string errorMessage;
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std::string strMasterNodeSignMessage;
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std::string strMessage = vinMasternode.prevout.ToStringShort() +
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boost::lexical_cast<std::string>(nBlockHeight) +
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payee.ToString();
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if(!darkSendSigner.SignMessage(strMessage, errorMessage, vchSig, keyMasternode)) {
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LogPrintf("CMasternodePing::Sign() - Error: %s\n", errorMessage.c_str());
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return false;
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}
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if(!darkSendSigner.VerifyMessage(pubKeyMasternode, vchSig, strMessage, errorMessage)) {
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LogPrintf("CMasternodePing::Sign() - Error: %s\n", errorMessage.c_str());
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return false;
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}
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return true;
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}
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bool CMasternodePayments::GetBlockPayee(int nBlockHeight, CScript& payee)
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{
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if(mapMasternodeBlocks.count(nBlockHeight)){
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return mapMasternodeBlocks[nBlockHeight].GetPayee(payee);
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}
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return false;
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}
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bool CMasternodePayments::IsScheduled(CMasternode& mn, int nNotBlockHeight)
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{
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CBlockIndex* pindexPrev = chainActive.Tip();
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if(pindexPrev == NULL) return false;
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CScript mnpayee;
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mnpayee = GetScriptForDestination(mn.pubkey.GetID());
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CScript payee;
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for(int64_t h = pindexPrev->nHeight; h <= pindexPrev->nHeight+10; h++){
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if(h == nNotBlockHeight) continue;
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if(mapMasternodeBlocks.count(h)){
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if(mapMasternodeBlocks[h].GetPayee(payee)){
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if(mnpayee == payee || mn.donationAddress == payee) {
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return true;
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}
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}
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}
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}
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return false;
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}
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bool CMasternodePayments::AddWinningMasternode(CMasternodePaymentWinner& winnerIn)
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{
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uint256 blockHash = 0;
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if(!GetBlockHash(blockHash, winnerIn.nBlockHeight-100)) {
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return false;
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}
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if(mapMasternodePayeeVotes.count(winnerIn.GetHash())){
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return false;
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}
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mapMasternodePayeeVotes[winnerIn.GetHash()] = winnerIn;
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if(!mapMasternodeBlocks.count(winnerIn.nBlockHeight)){
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CMasternodeBlockPayees blockPayees(winnerIn.nBlockHeight);
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mapMasternodeBlocks[winnerIn.nBlockHeight] = blockPayees;
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}
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int n = 1;
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if(IsReferenceNode(winnerIn.vinMasternode)) n = 100;
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mapMasternodeBlocks[winnerIn.nBlockHeight].AddPayee(winnerIn.payee.scriptPubKey, winnerIn.payee.nValue, n);
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return true;
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}
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bool CMasternodeBlockPayees::IsTransactionValid(const CTransaction& txNew)
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{
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int nMaxSignatures = 0;
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std::string strPayeesPossible = "";
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//require at least 6 signatures
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BOOST_FOREACH(CMasternodePayee& payee, vecPayments)
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if(payee.nVotes >= nMaxSignatures && payee.nVotes >= MNPAYMENTS_SIGNATURES_REQUIRED)
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nMaxSignatures = payee.nVotes;
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// if we don't have at least 6 signatures on a payee, approve whichever is the longest chain
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if(nMaxSignatures < MNPAYMENTS_SIGNATURES_REQUIRED) return true;
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BOOST_FOREACH(CMasternodePayee& payee, vecPayments)
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{
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bool found = false;
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BOOST_FOREACH(CTxOut out, txNew.vout)
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if(payee.scriptPubKey == out.scriptPubKey && payee.nValue == out.nValue)
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found = true;
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if(payee.nVotes >= MNPAYMENTS_SIGNATURES_REQUIRED){
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if(found) return true;
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CTxDestination address1;
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ExtractDestination(payee.scriptPubKey, address1);
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CBitcoinAddress address2(address1);
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if(strPayeesPossible == ""){
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strPayeesPossible += address2.ToString() + ":" + boost::lexical_cast<std::string>(payee.nValue);
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} else {
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strPayeesPossible += "," + address2.ToString() + ":" + boost::lexical_cast<std::string>(payee.nValue);
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}
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}
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}
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LogPrintf("CMasternodePayments::IsTransactionValid - Missing required payment - %s\n", strPayeesPossible.c_str());
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return false;
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}
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std::string CMasternodeBlockPayees::GetRequiredPaymentsString()
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{
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std::string ret = "Unknown";
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BOOST_FOREACH(CMasternodePayee& payee, vecPayments)
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{
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CTxDestination address1;
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ExtractDestination(payee.scriptPubKey, address1);
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CBitcoinAddress address2(address1);
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if(ret != "Unknown"){
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ret += ", " + address2.ToString() + ":" + boost::lexical_cast<std::string>(payee.nValue) + ":" + boost::lexical_cast<std::string>(payee.nVotes);
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} else {
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ret = address2.ToString() + ":" + boost::lexical_cast<std::string>(payee.nValue) + ":" + boost::lexical_cast<std::string>(payee.nVotes);
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}
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}
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return ret;
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}
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std::string CMasternodePayments::GetRequiredPaymentsString(int nBlockHeight)
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{
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if(mapMasternodeBlocks.count(nBlockHeight)){
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return mapMasternodeBlocks[nBlockHeight].GetRequiredPaymentsString();
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}
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return "Unknown";
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}
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bool CMasternodePayments::IsTransactionValid(const CTransaction& txNew, int nBlockHeight)
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{
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if(mapMasternodeBlocks.count(nBlockHeight)){
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return mapMasternodeBlocks[nBlockHeight].IsTransactionValid(txNew);
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}
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return true;
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}
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void CMasternodePayments::CleanPaymentList()
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{
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LOCK(cs_masternodepayments);
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if(chainActive.Tip() == NULL) return;
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int nLimit = std::max(((int)mnodeman.size())*2, 1000);
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std::map<uint256, CMasternodePaymentWinner>::iterator it = mapMasternodePayeeVotes.begin();
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while(it != mapMasternodePayeeVotes.end()) {
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CMasternodePaymentWinner winner = (*it).second;
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if(chainActive.Tip()->nHeight - winner.nBlockHeight > nLimit){
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if(fDebug) LogPrintf("CMasternodePayments::CleanPaymentList - Removing old Masternode payment - block %d\n", winner.nBlockHeight);
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mapMasternodePayeeVotes.erase(it++);
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} else {
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++it;
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}
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}
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}
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bool IsReferenceNode(CTxIn& vin)
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{
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//reference node - hybrid mode
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if(vin.prevout.ToStringShort() == "099c01bea63abd1692f60806bb646fa1d288e2d049281225f17e499024084e28-0") return true; // mainnet
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if(vin.prevout.ToStringShort() == "fbc16ae5229d6d99181802fd76a4feee5e7640164dcebc7f8feb04a7bea026f8-0") return true; // testnet
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if(vin.prevout.ToStringShort() == "e466f5d8beb4c2d22a314310dc58e0ea89505c95409754d0d68fb874952608cc-1") return true; // regtest
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return false;
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}
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bool CMasternodePaymentWinner::IsValid()
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{
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if(IsReferenceNode(vinMasternode)) return true;
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int n = mnodeman.GetMasternodeRank(vinMasternode, nBlockHeight-100, MIN_MNPAYMENTS_PROTO_VERSION);
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if(n == -1)
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{
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LogPrintf("CMasternodePaymentWinner::IsValid - Unknown Masternode\n");
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return false;
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}
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if(n > MNPAYMENTS_SIGNATURES_TOTAL)
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{
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LogPrintf("CMasternodePaymentWinner::IsValid - Masternode not in the top %d (%d)\n", MNPAYMENTS_SIGNATURES_TOTAL, n);
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return false;
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}
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return true;
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}
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bool CMasternodePayments::ProcessBlock(int nBlockHeight)
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{
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LOCK(cs_masternodepayments);
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if(!fMasterNode) return false;
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//reference node - hybrid mode
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if(!IsReferenceNode(activeMasternode.vin)){
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int n = mnodeman.GetMasternodeRank(activeMasternode.vin, nBlockHeight-100, MIN_MNPAYMENTS_PROTO_VERSION);
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if(n == -1)
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{
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if(fDebug) LogPrintf("CMasternodePayments::ProcessBlock - Unknown Masternode\n");
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return false;
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}
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if(n > MNPAYMENTS_SIGNATURES_TOTAL)
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{
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if(fDebug) LogPrintf("CMasternodePayments::ProcessBlock - Masternode not in the top %d (%d)\n", MNPAYMENTS_SIGNATURES_TOTAL, n);
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return false;
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}
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}
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if(nBlockHeight <= nLastBlockHeight) return false;
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CBlockIndex* pindexPrev = chainActive.Tip();
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if(pindexPrev == NULL) return false;
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CAmount blockValue = GetBlockValue(pindexPrev->nBits, pindexPrev->nHeight, 0);
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CAmount masternodePayment = GetMasternodePayment(pindexPrev->nHeight+1, blockValue);
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CMasternodePaymentWinner newWinner(activeMasternode.vin);
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if(budget.IsBudgetPaymentBlock(nBlockHeight)){
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//is budget payment block -- handled by the budgeting software
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} else {
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CScript payeeSource;
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uint256 hash;
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if(!GetBlockHash(hash, nBlockHeight-100)) return false;
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unsigned int nHash;
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memcpy(&nHash, &hash, 2);
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LogPrintf(" ProcessBlock Start nHeight %d. \n", nBlockHeight);
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// pay to the oldest MN that still had no payment but its input is old enough and it was active long enough
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CMasternode *pmn = mnodeman.GetNextMasternodeInQueueForPayment(nBlockHeight);
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if(pmn != NULL)
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{
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LogPrintf(" Found by FindOldestNotInVec \n");
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newWinner.nBlockHeight = nBlockHeight;
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CScript payee;
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if(pmn->donationPercentage > 0 && (nHash % 100) <= (unsigned int)pmn->donationPercentage) {
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payee = pmn->donationAddress;
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} else {
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payee = GetScriptForDestination(pmn->pubkey.GetID());
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}
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payeeSource = GetScriptForDestination(pmn->pubkey.GetID());
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newWinner.AddPayee(payee, masternodePayment);
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CTxDestination address1;
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ExtractDestination(payee, address1);
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CBitcoinAddress address2(address1);
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CTxDestination address3;
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ExtractDestination(payeeSource, address3);
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CBitcoinAddress address4(address3);
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LogPrintf("Winner payee %s nHeight %d vin source %s. \n", address2.ToString().c_str(), newWinner.nBlockHeight, address4.ToString().c_str());
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} else {
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LogPrintf(" Failed to find masternode to pay\n");
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}
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}
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std::string errorMessage;
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CPubKey pubKeyMasternode;
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CKey keyMasternode;
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if(!darkSendSigner.SetKey(strMasterNodePrivKey, errorMessage, keyMasternode, pubKeyMasternode))
|
|
{
|
|
LogPrintf("CMasternodePayments::ProcessBlock() - Error upon calling SetKey: %s\n", errorMessage.c_str());
|
|
return false;
|
|
}
|
|
|
|
if(newWinner.Sign(keyMasternode, pubKeyMasternode))
|
|
{
|
|
if(AddWinningMasternode(newWinner))
|
|
{
|
|
newWinner.Relay();
|
|
nLastBlockHeight = nBlockHeight;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void CMasternodePaymentWinner::Relay()
|
|
{
|
|
CInv inv(MSG_MASTERNODE_WINNER, GetHash());
|
|
|
|
vector<CInv> vInv;
|
|
vInv.push_back(inv);
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodes){
|
|
pnode->PushMessage("inv", vInv);
|
|
}
|
|
}
|
|
|
|
bool CMasternodePaymentWinner::SignatureValid()
|
|
{
|
|
|
|
CMasternode* pmn = mnodeman.Find(vinMasternode);
|
|
|
|
if(pmn != NULL)
|
|
{
|
|
std::string strMessage = vinMasternode.prevout.ToStringShort() +
|
|
boost::lexical_cast<std::string>(nBlockHeight) +
|
|
payee.ToString();
|
|
|
|
|
|
std::string errorMessage = "";
|
|
if(!darkSendSigner.VerifyMessage(pmn->pubkey2, vchSig, strMessage, errorMessage)){
|
|
return error("CMasternodePaymentWinner::SignatureValid() - Got bad Masternode address signature %s \n", vinMasternode.ToString().c_str());
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void CMasternodePayments::Sync(CNode* node)
|
|
{
|
|
LOCK(cs_masternodepayments);
|
|
|
|
if(chainActive.Tip() == NULL) return;
|
|
|
|
std::map<uint256, CMasternodePaymentWinner>::iterator it = mapMasternodePayeeVotes.begin();
|
|
while(it != mapMasternodePayeeVotes.end()) {
|
|
CMasternodePaymentWinner winner = (*it).second;
|
|
if(winner.nBlockHeight >= chainActive.Tip()->nHeight-10 && winner.nBlockHeight <= chainActive.Tip()->nHeight + 20)
|
|
node->PushMessage("mnw", winner);
|
|
++it;
|
|
}
|
|
}
|