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Eliminate mapBlockIndex risk of nulls across VRSC

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This commit is contained in:
miketout
2018-10-14 11:59:13 -07:00
parent aeadfa0490
commit d565e7b73c
6 changed files with 31 additions and 23 deletions
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35
src/komodo_bitcoind.h
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@@ -663,14 +663,15 @@ int32_t komodo_is_notarytx(const CTransaction& tx)
int32_t komodo_block2height(CBlock *block)
{
static uint32_t match,mismatch;
int32_t i,n,height2=-1,height = 0; uint8_t *ptr; CBlockIndex *pindex;
if ( (pindex= mapBlockIndex[block->GetHash()]) != 0 )
int32_t i,n,height2=-1,height = 0; uint8_t *ptr; CBlockIndex *pindex = NULL;
BlockMap::const_iterator it = mapBlockIndex.find(block->GetHash());
if ( it != mapBlockIndex.end() && (pindex = it->second) != 0 )
{
height2 = (int32_t)pindex->GetHeight();
if ( height2 >= 0 )
return(height2);
}
if ( block != 0 && block->vtx[0].vin.size() > 0 )
if ( pindex && block != 0 && block->vtx[0].vin.size() > 0 )
{
ptr = (uint8_t *)&block->vtx[0].vin[0].scriptSig[0];
if ( ptr != 0 && block->vtx[0].vin[0].scriptSig.size() > 5 )
@@ -989,7 +990,8 @@ int32_t komodo_checkpoint(int32_t *notarized_heightp,int32_t nHeight,uint256 has
return(-1);
notarized_height = komodo_notarizeddata(pindex->GetHeight(),&notarized_hash,&notarized_desttxid);
*notarized_heightp = notarized_height;
if ( notarized_height >= 0 && notarized_height <= pindex->GetHeight() && (notary= mapBlockIndex[notarized_hash]) != 0 )
BlockMap::const_iterator it;
if ( notarized_height >= 0 && notarized_height <= pindex->GetHeight() && (it = mapBlockIndex.find(notarized_hash)) != mapBlockIndex.end() && (notary = it->second) != NULL )
{
//printf("nHeight.%d -> (%d %s)\n",pindex->Tip()->GetHeight(),notarized_height,notarized_hash.ToString().c_str());
if ( notary->GetHeight() == notarized_height ) // if notarized_hash not in chain, reorg
@@ -1380,7 +1382,8 @@ int32_t komodo_is_PoSblock(int32_t slowflag,int32_t height,CBlock *pblock,arith_
CBlockIndex *previndex,*pindex; char voutaddr[64],destaddr[64]; uint256 txid; uint32_t txtime,prevtime=0; int32_t vout,PoSperc,txn_count,eligible=0,isPoS = 0,segid; uint64_t value; CTxDestination voutaddress;
if ( ASSETCHAINS_STAKED == 100 && height <= 10 )
return(1);
pindex = mapBlockIndex[pblock->GetHash()];
BlockMap::const_iterator it = mapBlockIndex.find(pblock->GetHash());
pindex = it != mapBlockIndex.end() ? it->second : NULL;
if ( pindex != 0 && pindex->segid >= -1 )
{
if ( pindex->segid == -1 )
@@ -1390,11 +1393,10 @@ int32_t komodo_is_PoSblock(int32_t slowflag,int32_t height,CBlock *pblock,arith_
txn_count = pblock->vtx.size();
if ( txn_count > 1 && pblock->vtx[txn_count-1].vin.size() == 1 && pblock->vtx[txn_count-1].vout.size() == 1 )
{
if ( prevtime == 0 )
{
if ( (previndex= mapBlockIndex[pblock->hashPrevBlock]) != 0 )
prevtime = (uint32_t)previndex->nTime;
}
it = mapBlockIndex.find(pblock->hashPrevBlock);
if ( it != mapBlockIndex.end() && (previndex = it->second) != NULL )
prevtime = (uint32_t)previndex->nTime;
txid = pblock->vtx[txn_count-1].vin[0].prevout.hash;
vout = pblock->vtx[txn_count-1].vin[0].prevout.n;
if ( prevtime != 0 )
@@ -1573,17 +1575,19 @@ bool verusCheckPOSBlock(int32_t slowflag, CBlock *pblock, int32_t height)
if ((!newPOSEnforcement || posHash == hash) && hash <= target)
{
if ((mapBlockIndex.count(blkHash) == 0) ||
!(pastBlockIndex = mapBlockIndex[blkHash]) ||
BlockMap::const_iterator it = mapBlockIndex.find(blkHash);
if ((it == mapBlockIndex.end()) ||
!(pastBlockIndex = it->second) ||
(height - pastBlockIndex->GetHeight()) < VERUS_MIN_STAKEAGE)
{
fprintf(stderr,"ERROR: invalid PoS block %s - stake transaction too new\n",blkHash.ToString().c_str());
fprintf(stderr,"ERROR: invalid PoS block %s - stake source too new or not found\n",blkHash.ToString().c_str());
}
else
{
// make sure we have the right target
CBlockIndex *previndex;
if (!(previndex = mapBlockIndex[pblock->hashPrevBlock]))
it = mapBlockIndex.find(pblock->hashPrevBlock);
if (it == mapBlockIndex.end() || !(previndex = it->second))
{
fprintf(stderr,"ERROR: invalid PoS block %s - no prev block found\n",blkHash.ToString().c_str());
}
@@ -1721,7 +1725,8 @@ int32_t komodo_checkPOW(int32_t slowflag,CBlock *pblock,int32_t height)
fprintf(stderr,"height.%d slowflag.%d possible.%d cmp.%d\n",height,slowflag,possible,bhash > bnTarget);
return(0);
}
if ( (pprev= mapBlockIndex[pblock->hashPrevBlock]) != 0 )
BlockMap::const_iterator it = mapBlockIndex.find(pblock->hashPrevBlock);
if ( it != mapBlockIndex.end() && (pprev= it->second) != 0 )
height = pprev->GetHeight() + 1;
if ( height == 0 )
return(0);