bool VerifyPosTx(CAccountViewCache &accView, const CBlock *pBlock, CTransactionDBCache &txCache, CScriptDBViewCache &scriptCache, bool bNeedRunTx) {
// LogPrint("INFO", "VerifyPoxTx begin\n");
uint64_t maxNonce = SysCfg().GetBlockMaxNonce(); //cacul times
if (pBlock->GetNonce() > maxNonce) {
return ERRORMSG("Nonce is larger than maxNonce");
}
if (pBlock->GetHashMerkleRoot() != pBlock->BuildMerkleTree()) {
return ERRORMSG("hashMerkleRoot is error");
}
CAccountViewCache view(accView, true);
CScriptDBViewCache scriptDBView(scriptCache, true);
CAccount account;
CRewardTransaction *prtx = (CRewardTransaction *) pBlock->vptx[0].get();
if (view.GetAccount(prtx->account, account)) {
if(!CheckSignScript(pBlock->SignatureHash(), pBlock->GetSignature(), account.PublicKey)) {
if (!CheckSignScript(pBlock->SignatureHash(), pBlock->GetSignature(), account.MinerPKey)) {
// LogPrint("ERROR", "block verify fail\r\n");
// LogPrint("ERROR", "block hash:%s\n", pBlock->GetHash().GetHex());
// LogPrint("ERROR", "signature block:%s\n", HexStr(pBlock->vSignature.begin(), pBlock->vSignature.end()));
return ERRORMSG("Verify miner publickey signature error");
}
}
} else {
return ERRORMSG("AccountView have no the accountid");
}
//校验reward_tx 版本是否正确
if (prtx->nVersion != nTxVersion2) {
return ERRORMSG("CTransaction CheckTransction,tx version is not equal current version, (tx version %d: vs current %d)",
prtx->nVersion, nTxVersion2);
}
if (bNeedRunTx) {
int64_t nTotalFuel(0);
uint64_t nTotalRunStep(0);
for (unsigned int i = 1; i < pBlock->vptx.size(); i++) {
shared_ptr<CBaseTransaction> pBaseTx = pBlock->vptx[i];
if (uint256() != txCache.IsContainTx(pBaseTx->GetHash())) {
return ERRORMSG("VerifyPosTx duplicate tx hash:%s", pBaseTx->GetHash().GetHex());
}
CTxUndo txundo;
CValidationState state;
if (CONTRACT_TX == pBaseTx->nTxType) {
LogPrint("vm", "tx hash=%s VerifyPosTx run contract\n", pBaseTx->GetHash().GetHex());
}
pBaseTx->nFuelRate = pBlock->GetFuelRate();
if (!pBaseTx->ExecuteTx(i, view, state, txundo, pBlock->GetHeight(), txCache, scriptDBView)) {
return ERRORMSG("transaction UpdateAccount account error");
}
nTotalRunStep += pBaseTx->nRunStep;
if(nTotalRunStep > MAX_BLOCK_RUN_STEP) {
return ERRORMSG("block total run steps exceed max run step");
}
nTotalFuel += pBaseTx->GetFuel(pBlock->GetFuelRate());
LogPrint("fuel", "VerifyPosTx total fuel:%d, tx fuel:%d runStep:%d fuelRate:%d txhash:%s \n",nTotalFuel, pBaseTx->GetFuel(pBlock->GetFuelRate()), pBaseTx->nRunStep, pBlock->GetFuelRate(), pBaseTx->GetHash().GetHex());
}
if(nTotalFuel != pBlock->GetFuel()) {
return ERRORMSG("fuel value at block header calculate error");
}
if (view.GetAccount(prtx->account, account)) {
//available acc
// cout << "check block hash:" << pBlock->SignatureHash().GetHex() << endl;
// cout << "check signature:" << HexStr(pBlock->vSignature) << endl;
// cout <<"account miner"<< account.ToString()<< endl;
if(account.GetAccountPos(pBlock->GetHeight()) <= 0 || !account.IsMiner(pBlock->GetHeight()))
return ERRORMSG("coindays of account dismatch, can't be miner, account info:%s", account.ToString());
} else {
LogPrint("ERROR", "AccountView have no the accountid\r\n");
return false;
}
}
uint256 prevblockhash = pBlock->GetHashPrevBlock();
const uint256 targetHash = CBigNum().SetCompact(pBlock->GetBits()).getuint256(); //target hash difficult
uint64_t posacc = account.GetAccountPos(pBlock->GetHeight());
/*
arith_uint256 bnNew;
bnNew.SetCompact(pBlock->nBits);
string timeFormat = DateTimeStrFormat("%Y-%m-%d %H:%M:%S", pBlock->nTime);
LogPrint("coinday","height:%.10d, account:%-10s, coinday:%.10ld, difficulty=%.8lf, time=%-20s, interval=%d\n", pBlock->nHeight, account.regID.ToString(), posacc/COIN/SysCfg().GetIntervalPos(), CaculateDifficulty(bnNew.GetCompact()), timeFormat, pBlock->nTime-chainActive[pBlock->nHeight-1]->nTime);
*/
if (posacc == 0) {
return ERRORMSG("Account have no pos");
}
uint256 adjusthash = GetAdjustHash(targetHash, posacc, pBlock->GetHeight()-1); //adjust nbits
//need compute this block proofofwork
struct PosTxInfo postxinfo;
postxinfo.nVersion = pBlock->GetVersion();
postxinfo.hashPrevBlock = prevblockhash;
postxinfo.hashMerkleRoot = account.GetHash();
postxinfo.nValues = account.llValues;
postxinfo.nTime = pBlock->GetTime();
postxinfo.nNonce = pBlock->GetNonce();
postxinfo.nHeight = pBlock->GetHeight();
postxinfo.nFuel = pBlock->GetFuel();
postxinfo.nFuelRate = pBlock->GetFuelRate();
uint256 curhash = postxinfo.GetHash();
LogPrint("miner", "Miner account info:%s\n", account.ToString());
LogPrint("miner", "VerifyPosTx block hash:%s, postxinfo:%s\n", pBlock->GetHash().GetHex(), postxinfo.ToString().c_str());
if(pBlock->GetHashPos() != curhash) {
return ERRORMSG("PosHash Error: \n"
" computer PoS hash:%s \n"
" block PoS hash:%s\n", curhash.GetHex(), pBlock->GetHashPos().GetHex());
}
if (UintToArith256(curhash) > UintToArith256(adjusthash)) {
return ERRORMSG("Account ProofOfWorkLimit error: \n"
" pos hash:%s \n"
"adjust hash:%s\r\n", curhash.GetHex(), adjusthash.GetHex());
}
return true;
}
bool CreatePosTx(const CBlockIndex *pPrevIndex, CBlock *pBlock, set<CKeyID>&setCreateKey, CAccountViewCache &view,
CTransactionDBCache &txCache, CScriptDBViewCache &scriptCache) {
set<CKeyID> setKeyID;
setKeyID.clear();
set<CAccount, CAccountComparator> setAcctInfo;
{
LOCK2(cs_main, pwalletMain->cs_wallet);
if((unsigned int)(chainActive.Tip()->nHeight + 1) != pBlock->GetHeight())
return false;
pwalletMain->GetKeys(setKeyID, true); // first:get keyID from pwalletMain
if (setKeyID.empty()) {
return ERRORMSG("CreatePosTx setKeyID empty");
}
LogPrint("INFO","CreatePosTx block time:%d\n", pBlock->GetTime());
for(const auto &keyid:setKeyID) { //second:get account by keyID
//find CAccount info by keyid
if(setCreateKey.size()) {
bool bfind = false;
for(auto &item: setCreateKey){
if(item == keyid){
bfind = true;
break;
}
}
if (!bfind)
continue;
}
CUserID userId = keyid;
CAccount acctInfo;
if (view.GetAccount(userId, acctInfo)) { // check acctInfo is or not allowed to mining ,
//available
// LogPrint("miner", "account info:regid=%s keyid=%s ncoinday=%lld isMiner=%d\n", acctInfo.regID.ToString(),
// acctInfo.keyID.ToString(), acctInfo.GetAccountPos(pBlock->nHeight), acctInfo.IsMiner(pBlock->nHeight));
if (acctInfo.IsRegister() && acctInfo.GetAccountPos(pBlock->GetHeight()) > 0 && acctInfo.IsMiner(pBlock->GetHeight())) {
setAcctInfo.insert(std::move(acctInfo));
// LogPrint("miner", "miner account info:%s\n", acctInfo.ToString());
}
}
}
}
if (setAcctInfo.empty()) {
setCreateKey.clear();
LogPrint("INFO", "CreatePosTx setSecureAcc empty");
return false;
}
uint64_t maxNonce = SysCfg().GetBlockMaxNonce(); //cacul times
uint256 prevblockhash = pPrevIndex->GetBlockHash();
const uint256 targetHash = CBigNum().SetCompact(pBlock->GetBits()).getuint256(); //target hash difficult
set<CAccount, CAccountComparator>::iterator iterAcct = setAcctInfo.begin();
for (;iterAcct!=setAcctInfo.end();++iterAcct) { //third: 根据不同的账户 ,去计算挖矿
CAccount &item = const_cast<CAccount&>(*iterAcct);
uint64_t posacc = item.GetAccountPos(pBlock->GetHeight());
if (0 == posacc) { //have no pos
LogPrint("ERROR", "CreatePosTx posacc zero\n");
continue;
}
LogPrint("miner", "miner account:%s\n", item.ToString());
// LogPrint("INFO", "target hash:%s\n", targetHash.ToString());
// LogPrint("INFO", "posacc:%d\n", posacc);
uint256 adjusthash = GetAdjustHash(targetHash, posacc, pBlock->GetHeight()-1); //adjust nbits
// LogPrint("INFO", "adjusthash:%s\n", adjusthash.ToString());
//need compute this block proofofwork
struct PosTxInfo postxinfo;
postxinfo.nVersion = pBlock->GetVersion();
postxinfo.hashPrevBlock = prevblockhash;
postxinfo.hashMerkleRoot = item.GetHash();
postxinfo.nValues = item.llValues;
postxinfo.nHeight = pBlock->GetHeight();
postxinfo.nFuel = pBlock->GetFuel();
postxinfo.nFuelRate = pBlock->GetFuelRate();
postxinfo.nTime = pBlock->GetTime(); //max(pPrevIndex->GetMedianTimePast() + 1, GetAdjustedTime());
unsigned int nNonce = 0;
for (; nNonce < maxNonce; ++nNonce) { //循环的 更改随机数，计算curhash看是否满足
postxinfo.nNonce = nNonce;
pBlock->SetNonce(nNonce);
uint256 curhash = postxinfo.GetHash();
if (UintToArith256(curhash) <= UintToArith256(adjusthash)) {
CRegID regid;
if (pAccountViewTip->GetRegId(item.keyID, regid)) {
CRewardTransaction *prtx = (CRewardTransaction *) pBlock->vptx[0].get();
prtx->account = regid; //存矿工的 账户ID
prtx->nHeight = pPrevIndex->nHeight+1;
pBlock->SetHashMerkleRoot(pBlock->BuildMerkleTree());
pBlock->SetHashPos(curhash);
LogPrint("INFO", "find pos tx hash succeed: \n"
" pos hash:%s \n"
"adjust hash:%s \r\n", curhash.GetHex(), adjusthash.GetHex());
vector<unsigned char> vSign;
if (pwalletMain->Sign(item.keyID, pBlock->SignatureHash(), vSign,
item.MinerPKey.IsValid())) {
LogPrint("INFO", "Create new block hash:%s\n", pBlock->GetHash().GetHex());
LogPrint("miner", "Miner account info:%s\n", item.ToString());
LogPrint("miner", "CreatePosTx block hash:%s, postxinfo:%s\n",pBlock->GetHash().GetHex(), postxinfo.ToString().c_str());
pBlock->SetSignature(vSign);
return true;
} else {
LogPrint("ERROR", "sign fail\r\n");
}
} else {
LogPrint("ERROR", "GetKey fail or GetVec6 fail\r\n");
}
}
}
}
return false;
}