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Fix floating point exception. Problem was POW target trying to calculate when not all blocks avalible. These changes leave us even more open to PoS attack, we need to get temp block file working as soon as we can.

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This commit is contained in:
blackjok3r
2019-01-28 16:13:25 +08:00
parent 6756fa3ad7
commit 4f212c841d
1 changed files with 18 additions and 21 deletions
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39
src/komodo_bitcoind.h
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@@ -1319,7 +1319,7 @@ arith_uint256 komodo_PoWtarget(int32_t *percPoSp,arith_uint256 target,int32_t he
sum += UintToArith256(pindex->GetBlockHash());
m++;
}
}
} //else fprintf(stderr, "pindex returned null ht.%i\n",ht);
if ( dispflag != 0 && ASSETCHAINS_STAKED < 100 && (i % 10) == 9 )
fprintf(stderr," %d, ",percPoS);
}
@@ -1521,8 +1521,9 @@ int32_t komodo_is_PoSblock(int32_t slowflag,int32_t height,CBlock *pblock,arith_
return(0);
else return(1);
}
// Get PoSperc and POW Target. for later.
POWTarget = komodo_PoWtarget(&PoSperc,bnTarget,height,ASSETCHAINS_STAKED);
// Get PoSperc and POW Target. slowflag only here, calling it when blocks out of order causes problems.
if ( slowflag != 0 )
POWTarget = komodo_PoWtarget(&PoSperc,bnTarget,height,ASSETCHAINS_STAKED);
txn_count = pblock->vtx.size();
//fprintf(stderr,"checkblock n.%d vins.%d vouts.%d %.8f %.8f\n",txn_count,(int32_t)pblock->vtx[txn_count-1].vin.size(),(int32_t)pblock->vtx[txn_count-1].vout.size(),(double)pblock->vtx[txn_count-1].vout[0].nValue/COIN,(double)pblock->vtx[txn_count-1].vout[1].nValue/COIN);
if ( txn_count > 1 && pblock->vtx[txn_count-1].vin.size() == 1 && pblock->vtx[txn_count-1].vout.size() == 1 + (ASSETCHAINS_MARMARA!=0) )
@@ -1533,7 +1534,7 @@ int32_t komodo_is_PoSblock(int32_t slowflag,int32_t height,CBlock *pblock,arith_
txid = pblock->vtx[txn_count-1].vin[0].prevout.hash;
vout = pblock->vtx[txn_count-1].vin[0].prevout.n;
if ( prevtime != 0 )
if ( slowflag != 0 && prevtime != 0 )
{
if ( komodo_isPoS(pblock,height) != 0 )
{
@@ -1543,7 +1544,7 @@ int32_t komodo_is_PoSblock(int32_t slowflag,int32_t height,CBlock *pblock,arith_
{
if ( 0 && ASSETCHAINS_STAKED < 100 )
fprintf(stderr,"komodo_is_PoSblock PoS failure ht.%d eligible.%u vs blocktime.%u, lag.%d -> check to see if it is PoW block\n",height,eligible,(uint32_t)pblock->nTime,(int32_t)(eligible - pblock->nTime));
if ( slowflag != 0 && pindex != 0 )
if ( pindex != 0 )
{
pindex->segid = -1;
//fprintf(stderr,"PoW block detected set segid.%d <- %d\n",height,pindex->segid);
@@ -1552,23 +1553,20 @@ int32_t komodo_is_PoSblock(int32_t slowflag,int32_t height,CBlock *pblock,arith_
else
{
isPoS = 2; // 2 means staking utxo validated
if ( slowflag != 0 )
CTxDestination voutaddress; char voutaddr[64];
if ( ExtractDestination(pblock->vtx[txn_count-1].vout[0].scriptPubKey,voutaddress) )
{
CTxDestination voutaddress; char voutaddr[64];
if ( ExtractDestination(pblock->vtx[txn_count-1].vout[0].scriptPubKey,voutaddress) )
{
strcpy(voutaddr,CBitcoinAddress(voutaddress).ToString().c_str());
segid = komodo_segid32(voutaddr) & 0x3f;
}
if ( pindex != 0 && segid >= 0 )
{
pindex->segid = segid;
//fprintf(stderr,"PoS block set segid.%d <- %d\n",height,pindex->segid);
} //else fprintf(stderr,"unexpected null pindex for slowflag set ht.%d segid.%d:%d\n",height,pindex!=0?pindex->segid:-3,segid);
strcpy(voutaddr,CBitcoinAddress(voutaddress).ToString().c_str());
segid = komodo_segid32(voutaddr) & 0x3f;
}
if ( pindex != 0 && segid >= 0 )
{
pindex->segid = segid;
//fprintf(stderr,"PoS block set segid.%d <- %d\n",height,pindex->segid);
} //else fprintf(stderr,"unexpected null pindex for slowflag set ht.%d segid.%d:%d\n",height,pindex!=0?pindex->segid:-3,segid);
}
}
if ( slowflag == 0 && isPoS == 0 ) // maybe previous block is not seen yet, do the best approx
}
else if ( slowflag == 0 ) // previous blocks are not seen yet, do the best approx
{
if ( komodo_isPoS(pblock,height) != 0 )
isPoS = 1;
@@ -1893,8 +1891,7 @@ int32_t komodo_checkPOW(int32_t slowflag,CBlock *pblock,int32_t height)
return(-1);
else
{
if ( slowflag != 0 )
bnTarget = komodo_PoWtarget(&PoSperc,bnTarget,height,ASSETCHAINS_STAKED);
bnTarget = komodo_PoWtarget(&PoSperc,bnTarget,height,ASSETCHAINS_STAKED);
if ( bhash > bnTarget )
{
for (i=31; i>=16; i--)