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Fix zawy attack, thanks zawy!

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This commit is contained in:
jl777
2019-08-01 00:38:59 -11:00
parent a74bd537a4
commit 1cefd54af1
2 changed files with 12 additions and 5 deletions
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4
src/main.cpp
View File

@@ -5299,9 +5299,9 @@ bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& sta
}
else
{
if ( block.GetBlockTime() <= pindexPrev->GetMedianTimePast() + 2*ASSETCHAINS_ADAPTIVEPOW*ASSETCHAINS_BLOCKTIME )
if ( block.GetBlockTime() <= pindexPrev->nTime )
{
fprintf(stderr,"ht.%d too early2 %u vs %u\n",(int32_t)nHeight,(uint32_t)block.GetBlockTime(),(uint32_t)pindexPrev->GetMedianTimePast());
fprintf(stderr,"ht.%d too early2 %u vs %u\n",(int32_t)nHeight,(uint32_t)block.GetBlockTime(),(uint32_t)pindexPrev->nTime);
return state.Invalid(error("%s: block's timestamp is too early2", __func__),
REJECT_INVALID, "time-too-old");
}

13
src/miner.cpp
View File

@@ -123,7 +123,9 @@ public:
void UpdateTime(CBlockHeader* pblock, const Consensus::Params& consensusParams, const CBlockIndex* pindexPrev)
{
pblock->nTime = std::max(pindexPrev->GetMedianTimePast()+1 + 2*ASSETCHAINS_ADAPTIVEPOW*ASSETCHAINS_BLOCKTIME, GetAdjustedTime());
if ( ASSETCHAINS_ADAPTIVEPOW == 0 )
pblock->nTime = std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
else pblock->nTime = std::max(pindexPrev->nTime+1, GetAdjustedTime());
// Updating time can change work required on testnet:
if (consensusParams.nPowAllowMinDifficultyBlocksAfterHeight != boost::none) {
@@ -567,7 +569,9 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
nLastBlockTx = nBlockTx;
nLastBlockSize = nBlockSize;
blocktime = 1 + std::max(pindexPrev->GetMedianTimePast()+1+ 2*ASSETCHAINS_ADAPTIVEPOW*ASSETCHAINS_BLOCKTIME, GetAdjustedTime());
if ( ASSETCHAINS_ADAPTIVEPOW == 0 )
blocktime = 1 + std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
else blocktime = 1 + std::max(pindexPrev->nTime+1, GetAdjustedTime());
//pblock->nTime = blocktime + 1;
pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());
@@ -640,7 +644,10 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
txNew.vout[0].nValue = GetBlockSubsidy(nHeight,consensusParams) + nFees;
//fprintf(stderr,"mine ht.%d with %.8f\n",nHeight,(double)txNew.vout[0].nValue/COIN);
txNew.nExpiryHeight = 0;
txNew.nLockTime = std::max(pindexPrev->GetMedianTimePast()+1+ 2*ASSETCHAINS_ADAPTIVEPOW*ASSETCHAINS_BLOCKTIME, GetAdjustedTime());
if ( ASSETCHAINS_ADAPTIVEPOW == 0 )
txNew.nLockTime = std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
else txNew.nLockTime = std::max(pindexPrev->nTime+1, GetAdjustedTime());
if ( ASSETCHAINS_SYMBOL[0] == 0 && IS_KOMODO_NOTARY != 0 && My_notaryid >= 0 )
txNew.vout[0].nValue += 5000;