#include "alert.h"
#include "checkpoints.h"
#include "db.h"
-#include "txdb.h"
#include "net.h"
#include "init.h"
#include "ui_interface.h"
}
+//////////////////////////////////////////////////////////////////////////////
+//
+// CCoinsView implementations
+//
+
+bool CCoinsView::GetCoins(uint256 txid, CCoins &coins) { return false; }
+bool CCoinsView::SetCoins(uint256 txid, const CCoins &coins) { return false; }
+bool CCoinsView::HaveCoins(uint256 txid) { return false; }
+CBlockIndex *CCoinsView::GetBestBlock() { return NULL; }
+bool CCoinsView::SetBestBlock(CBlockIndex *pindex) { return false; }
+bool CCoinsView::BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex) { return false; }
+
+CCoinsViewBacked::CCoinsViewBacked(CCoinsView &viewIn) : base(&viewIn) { }
+bool CCoinsViewBacked::GetCoins(uint256 txid, CCoins &coins) { return base->GetCoins(txid, coins); }
+bool CCoinsViewBacked::SetCoins(uint256 txid, const CCoins &coins) { return base->SetCoins(txid, coins); }
+bool CCoinsViewBacked::HaveCoins(uint256 txid) { return base->HaveCoins(txid); }
+CBlockIndex *CCoinsViewBacked::GetBestBlock() { return base->GetBestBlock(); }
+bool CCoinsViewBacked::SetBestBlock(CBlockIndex *pindex) { return base->SetBestBlock(pindex); }
+void CCoinsViewBacked::SetBackend(CCoinsView &viewIn) { base = &viewIn; }
+
+bool CCoinsViewBacked::BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex) { return base->BatchWrite(mapCoins, pindex); }
+
+CCoinsViewCache::CCoinsViewCache(CCoinsView &baseIn, bool fDummy) : CCoinsViewBacked(baseIn), pindexTip(NULL) { }
+
+bool CCoinsViewCache::GetCoins(uint256 txid, CCoins &coins) {
+ if (cacheCoins.count(txid)) {
+ coins = cacheCoins[txid];
+ return true;
+ }
+ if (base->GetCoins(txid, coins)) {
+ cacheCoins[txid] = coins;
+ return true;
+ }
+ return false;
+}
+
+bool CCoinsViewCache::SetCoins(uint256 txid, const CCoins &coins) {
+ cacheCoins[txid] = coins;
+ return true;
+}
+
+bool CCoinsViewCache::HaveCoins(uint256 txid) {
+ return cacheCoins.count(txid) || base->HaveCoins(txid);
+}
+
+CBlockIndex *CCoinsViewCache::GetBestBlock() {
+ if (pindexTip == NULL)
+ pindexTip = base->GetBestBlock();
+ return pindexTip;
+}
+
+bool CCoinsViewCache::SetBestBlock(CBlockIndex *pindex) {
+ pindexTip = pindex;
+ return true;
+}
+
+bool CCoinsViewCache::BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex) {
+ for (std::map<uint256, CCoins>::const_iterator it = mapCoins.begin(); it != mapCoins.end(); it++)
+ cacheCoins[it->first] = it->second;
+ pindexTip = pindex;
+ return true;
+}
+
+bool CCoinsViewCache::Flush() {
+ bool fOk = base->BatchWrite(cacheCoins, pindexTip);
+ if (fOk)
+ cacheCoins.clear();
+ return fOk;
+}
+
+unsigned int CCoinsViewCache::GetCacheSize() {
+ return cacheCoins.size();
+}
+/** CCoinsView that brings transactions from a memorypool into view.
+ It does not check for spendings by memory pool transactions. */
+CCoinsViewMemPool::CCoinsViewMemPool(CCoinsView &baseIn, CTxMemPool &mempoolIn) : CCoinsViewBacked(baseIn), mempool(mempoolIn) { }
+bool CCoinsViewMemPool::GetCoins(uint256 txid, CCoins &coins) {
+ if (base->GetCoins(txid, coins))
+ return true;
+ if (mempool.exists(txid)) {
+ const CTransaction &tx = mempool.lookup(txid);
+ coins = CCoins(tx, MEMPOOL_HEIGHT, -1);
+ return true;
+ }
+ return false;
+}
+bool CCoinsViewMemPool::HaveCoins(uint256 txid) {
+ return mempool.exists(txid) || base->HaveCoins(txid);
+}
+CCoinsViewCache *pcoinsTip = NULL;
//////////////////////////////////////////////////////////////////////////////
//
//////////////////////////////////////////////////////////////////////////////
//
-// CTransaction and CTxIndex
+// CTransaction
//
-bool CTransaction::ReadFromDisk(CTxDB& txdb, COutPoint prevout, CTxIndex& txindexRet)
-{
- SetNull();
- if (!txdb.ReadTxIndex(prevout.hash, txindexRet))
- return false;
- if (!ReadFromDisk(txindexRet.pos))
- return false;
- if (prevout.n >= vout.size())
- {
- SetNull();
- return false;
- }
- return true;
-}
-
-bool CTransaction::ReadFromDisk(CTxDB& txdb, COutPoint prevout)
-{
- CTxIndex txindex;
- return ReadFromDisk(txdb, prevout, txindex);
-}
-
-bool CTransaction::ReadFromDisk(COutPoint prevout)
-{
- CTxDB txdb("r");
- CTxIndex txindex;
- return ReadFromDisk(txdb, prevout, txindex);
-}
-
bool CTransaction::IsStandard() const
{
if (nVersion > CTransaction::CURRENT_VERSION)
// expensive-to-check-upon-redemption script like:
// DUP CHECKSIG DROP ... repeated 100 times... OP_1
//
-bool CTransaction::AreInputsStandard(const MapPrevTx& mapInputs) const
+bool CTransaction::AreInputsStandard(CCoinsView& mapInputs) const
{
if (IsCoinBase())
return true; // Coinbases don't use vin normally
// beside "push data" in the scriptSig the
// IsStandard() call returns false
vector<vector<unsigned char> > stack;
- if (!EvalScript(stack, vin[i].scriptSig, *this, i, 0))
+ if (!EvalScript(stack, vin[i].scriptSig, *this, i, false, 0))
return false;
if (whichType == TX_SCRIPTHASH)
else
{
CBlock blockTmp;
- if (pblock == NULL)
- {
- // Load the block this tx is in
- CTxIndex txindex;
- if (!CTxDB("r").ReadTxIndex(GetHash(), txindex))
- return 0;
- if (!blockTmp.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos))
- return 0;
- pblock = &blockTmp;
+ if (pblock == NULL) {
+ CCoins coins;
+ if (pcoinsTip->GetCoins(GetHash(), coins)) {
+ CBlockIndex *pindex = FindBlockByHeight(coins.nHeight);
+ if (pindex) {
+ if (!blockTmp.ReadFromDisk(pindex))
+ return 0;
+ pblock = &blockTmp;
+ }
+ }
}
+ if (pblock) {
// Update the tx's hashBlock
hashBlock = pblock->GetHash();
// Fill in merkle branch
vMerkleBranch = pblock->GetMerkleBranch(nIndex);
+ }
}
// Is the tx in a block that's in the main chain
return pindexBest->nHeight - pindex->nHeight + 1;
}
-
-
-
-
-
-
bool CTransaction::CheckTransaction() const
{
// Basic checks that don't depend on any context
if (txout.IsEmpty() && !IsCoinBase() && !IsCoinStake())
return DoS(100, error("CTransaction::CheckTransaction() : txout empty for user transaction"));
- // NovaCoin: enforce minimum output amount for user transactions until 1 May 2014 04:00:00 GMT
+ // Enforce minimum output amount for user transactions until 1 May 2014 04:00:00 GMT
if (!fTestNet && !IsCoinBase() && !txout.IsEmpty() && nTime < OUTPUT_SWITCH_TIME && txout.nValue < MIN_TXOUT_AMOUNT)
return DoS(100, error("CTransaction::CheckTransaction() : txout.nValue below minimum"));
return nMinFee;
}
+void CTxMemPool::pruneSpent(const uint256 &hashTx, CCoins &coins)
+{
+ LOCK(cs);
+
+ std::map<COutPoint, CInPoint>::iterator it = mapNextTx.lower_bound(COutPoint(hashTx, 0));
-bool CTxMemPool::accept(CTxDB& txdb, CTransaction &tx, bool fCheckInputs,
- bool* pfMissingInputs)
+ // iterate over all COutPoints in mapNextTx whose hash equals the provided hashTx
+ while (it != mapNextTx.end() && it->first.hash == hashTx) {
+ coins.Spend(it->first.n); // and remove those outputs from coins
+ it++;
+ }
+}
+
+bool CTxMemPool::accept(CTransaction &tx, bool fCheckInputs, bool* pfMissingInputs)
{
if (pfMissingInputs)
*pfMissingInputs = false;
if (tx.IsCoinBase())
return tx.DoS(100, error("CTxMemPool::accept() : coinbase as individual tx"));
- // ppcoin: coinstake is also only valid in a block, not as a loose transaction
+ // Coinstake is also only valid in a block, not as a loose transaction
if (tx.IsCoinStake())
return tx.DoS(100, error("CTxMemPool::accept() : coinstake as individual tx"));
if (!fTestNet && !tx.IsStandard())
return error("CTxMemPool::accept() : nonstandard transaction type");
- // Do we already have it?
+ // is it already in the memory pool?
uint256 hash = tx.GetHash();
{
LOCK(cs);
if (mapTx.count(hash))
return false;
}
- if (fCheckInputs)
- if (txdb.ContainsTx(hash))
- return false;
// Check for conflicts with in-memory transactions
CTransaction* ptxOld = NULL;
if (fCheckInputs)
{
- MapPrevTx mapInputs;
- map<uint256, CTxIndex> mapUnused;
- bool fInvalid = false;
- if (!tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
- {
- if (fInvalid)
- return error("CTxMemPool::accept() : FetchInputs found invalid tx %s", hash.ToString().substr(0,10).c_str());
- if (pfMissingInputs)
- *pfMissingInputs = true;
+ CCoinsViewCache &view = *pcoinsTip;
+
+ // do we already have it?
+ if (view.HaveCoins(hash))
return false;
+
+ // do all inputs exist?
+ BOOST_FOREACH(const CTxIn txin, tx.vin) {
+ if (!view.HaveCoins(txin.prevout.hash)) {
+ if (pfMissingInputs)
+ *pfMissingInputs = true;
+ return false;
+ }
}
// Check for non-standard pay-to-script-hash in inputs
- if (!tx.AreInputsStandard(mapInputs) && !fTestNet)
+ if (!tx.AreInputsStandard(view) && !fTestNet)
return error("CTxMemPool::accept() : nonstandard transaction input");
// Note: if you modify this code to accept non-standard transactions, then
// you should add code here to check that the transaction does a
// reasonable number of ECDSA signature verifications.
- int64 nFees = tx.GetValueIn(mapInputs)-tx.GetValueOut();
+ int64 nFees = tx.GetValueIn(view)-tx.GetValueOut();
unsigned int nSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
// Don't accept it if it can't get into a block
hash.ToString().c_str(),
nFees, txMinFee);
+
// Continuously rate-limit free transactions
// This mitigates 'penny-flooding' -- sending thousands of free transactions just to
// be annoying or make others' transactions take longer to confirm.
// Check against previous transactions
// This is done last to help prevent CPU exhaustion denial-of-service attacks.
- if (!tx.ConnectInputs(txdb, mapInputs, mapUnused, CDiskTxPos(1,1,1), pindexBest, false, false))
+ if (!tx.CheckInputs(view, CS_ALWAYS, true, false))
{
return error("CTxMemPool::accept() : ConnectInputs failed %s", hash.ToString().substr(0,10).c_str());
}
return true;
}
-bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMissingInputs)
+bool CTransaction::AcceptToMemoryPool(bool fCheckInputs, bool* pfMissingInputs)
{
- return mempool.accept(txdb, *this, fCheckInputs, pfMissingInputs);
+ return mempool.accept(*this, fCheckInputs, pfMissingInputs);
}
bool CTxMemPool::addUnchecked(const uint256& hash, CTransaction &tx)
return pindexBest->nHeight - pindex->nHeight + 1;
}
-
int CMerkleTx::GetBlocksToMaturity() const
{
if (!(IsCoinBase() || IsCoinStake()))
}
-bool CMerkleTx::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs)
+bool CMerkleTx::AcceptToMemoryPool(bool fCheckInputs)
{
if (fClient)
{
- if (!IsInMainChain() && !ClientConnectInputs())
+ if (!IsInMainChain() && !ClientCheckInputs())
return false;
- return CTransaction::AcceptToMemoryPool(txdb, false);
+ return CTransaction::AcceptToMemoryPool(false);
}
else
{
- return CTransaction::AcceptToMemoryPool(txdb, fCheckInputs);
+ return CTransaction::AcceptToMemoryPool(fCheckInputs);
}
}
-bool CMerkleTx::AcceptToMemoryPool()
-{
- CTxDB txdb("r");
- return AcceptToMemoryPool(txdb);
-}
-
-
-
-bool CWalletTx::AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs)
+bool CWalletTx::AcceptWalletTransaction(bool fCheckInputs)
{
{
if (!(tx.IsCoinBase() || tx.IsCoinStake()))
{
uint256 hash = tx.GetHash();
- if (!mempool.exists(hash) && !txdb.ContainsTx(hash))
- tx.AcceptToMemoryPool(txdb, fCheckInputs);
+ if (!mempool.exists(hash) && pcoinsTip->HaveCoins(hash))
+ tx.AcceptToMemoryPool(fCheckInputs);
}
}
- return AcceptToMemoryPool(txdb, fCheckInputs);
+ return AcceptToMemoryPool(fCheckInputs);
}
return false;
}
-bool CWalletTx::AcceptWalletTransaction()
-{
- CTxDB txdb("r");
- return AcceptWalletTransaction(txdb);
-}
-
-int CTxIndex::GetDepthInMainChain() const
-{
- // Read block header
- CBlock block;
- if (!block.ReadFromDisk(pos.nFile, pos.nBlockPos, false))
- return 0;
- // Find the block in the index
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(block.GetHash());
- if (mi == mapBlockIndex.end())
- return 0;
- CBlockIndex* pindex = (*mi).second;
- if (!pindex || !pindex->IsInMainChain())
- return 0;
- return 1 + nBestHeight - pindex->nHeight;
-}
-
// Return transaction in tx, and if it was found inside a block, its hash is placed in hashBlock
-bool GetTransaction(const uint256 &hash, CTransaction &tx, uint256 &hashBlock)
+bool GetTransaction(const uint256 &hash, CTransaction &txOut, uint256 &hashBlock, bool fAllowSlow)
{
+ CBlockIndex *pindexSlow = NULL;
{
LOCK(cs_main);
{
LOCK(mempool.cs);
if (mempool.exists(hash))
{
- tx = mempool.lookup(hash);
+ txOut = mempool.lookup(hash);
return true;
}
}
- CTxDB txdb("r");
- CTxIndex txindex;
- if (tx.ReadFromDisk(txdb, COutPoint(hash, 0), txindex))
- {
- CBlock block;
- if (block.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos, false))
- hashBlock = block.GetHash();
- return true;
+
+ if (fAllowSlow) { // use coin database to locate block that contains transaction, and scan it
+ int nHeight = -1;
+ {
+ CCoinsViewCache &view = *pcoinsTip;
+ CCoins coins;
+ if (view.GetCoins(hash, coins))
+ nHeight = coins.nHeight;
+ }
+ if (nHeight > 0)
+ pindexSlow = FindBlockByHeight(nHeight);
}
}
- return false;
-}
-
-
-
-
+ if (pindexSlow) {
+ CBlock block;
+ if (block.ReadFromDisk(pindexSlow)) {
+ BOOST_FOREACH(const CTransaction &tx, block.vtx) {
+ if (tx.GetHash() == hash) {
+ txOut = tx;
+ hashBlock = pindexSlow->GetBlockHash();
+ return true;
+ }
+ }
+ }
+ }
+ return false;
+}
//////////////////////////////////////////////////////////////////////////////
*this = pindex->GetBlockHeader();
return true;
}
- if (!ReadFromDisk(pindex->nFile, pindex->nBlockPos, fReadTransactions))
+ if (!ReadFromDisk(pindex->GetBlockPos(), fReadTransactions))
return false;
if (GetHash() != pindex->GetBlockHash())
return error("CBlock::ReadFromDisk() : GetHash() doesn't match index");
if (pindexNew->nChainTrust > nBestInvalidTrust)
{
nBestInvalidTrust = pindexNew->nChainTrust;
- CTxDB().WriteBestInvalidTrust(CBigNum(nBestInvalidTrust));
+ CChainDB().WriteBestInvalidTrust(CBigNum(nBestInvalidTrust));
uiInterface.NotifyBlocksChanged();
}
}
-
-
-
-
-
-
-
-
-
-bool CTransaction::DisconnectInputs(CTxDB& txdb)
-{
- // Relinquish previous transactions' spent pointers
- if (!IsCoinBase())
- {
- BOOST_FOREACH(const CTxIn& txin, vin)
- {
- COutPoint prevout = txin.prevout;
-
- // Get prev txindex from disk
- CTxIndex txindex;
- if (!txdb.ReadTxIndex(prevout.hash, txindex))
- return error("DisconnectInputs() : ReadTxIndex failed");
-
- if (prevout.n >= txindex.vSpent.size())
- return error("DisconnectInputs() : prevout.n out of range");
-
- // Mark outpoint as not spent
- txindex.vSpent[prevout.n].SetNull();
-
- // Write back
- if (!txdb.UpdateTxIndex(prevout.hash, txindex))
- return error("DisconnectInputs() : UpdateTxIndex failed");
- }
- }
-
- // Remove transaction from index
- // This can fail if a duplicate of this transaction was in a chain that got
- // reorganized away. This is only possible if this transaction was completely
- // spent, so erasing it would be a no-op anyway.
- txdb.EraseTxIndex(*this);
-
- return true;
-}
-
-
-bool CTransaction::FetchInputs(CTxDB& txdb, const map<uint256, CTxIndex>& mapTestPool,
- bool fBlock, bool fMiner, MapPrevTx& inputsRet, bool& fInvalid)
-{
- // FetchInputs can return false either because we just haven't seen some inputs
- // (in which case the transaction should be stored as an orphan)
- // or because the transaction is malformed (in which case the transaction should
- // be dropped). If tx is definitely invalid, fInvalid will be set to true.
- fInvalid = false;
-
- if (IsCoinBase())
- return true; // Coinbase transactions have no inputs to fetch.
-
- for (unsigned int i = 0; i < vin.size(); i++)
- {
- COutPoint prevout = vin[i].prevout;
- if (inputsRet.count(prevout.hash))
- continue; // Got it already
-
- // Read txindex
- CTxIndex& txindex = inputsRet[prevout.hash].first;
- bool fFound = true;
- if ((fBlock || fMiner) && mapTestPool.count(prevout.hash))
- {
- // Get txindex from current proposed changes
- txindex = mapTestPool.find(prevout.hash)->second;
- }
- else
- {
- // Read txindex from txdb
- fFound = txdb.ReadTxIndex(prevout.hash, txindex);
- }
- if (!fFound && (fBlock || fMiner))
- return fMiner ? false : error("FetchInputs() : %s prev tx %s index entry not found", GetHash().ToString().substr(0,10).c_str(), prevout.hash.ToString().substr(0,10).c_str());
-
- // Read txPrev
- CTransaction& txPrev = inputsRet[prevout.hash].second;
- if (!fFound || txindex.pos == CDiskTxPos(1,1,1))
- {
- // Get prev tx from single transactions in memory
- {
- LOCK(mempool.cs);
- if (!mempool.exists(prevout.hash))
- return error("FetchInputs() : %s mempool Tx prev not found %s", GetHash().ToString().substr(0,10).c_str(), prevout.hash.ToString().substr(0,10).c_str());
- txPrev = mempool.lookup(prevout.hash);
- }
- if (!fFound)
- txindex.vSpent.resize(txPrev.vout.size());
- }
- else
- {
- // Get prev tx from disk
- if (!txPrev.ReadFromDisk(txindex.pos))
- return error("FetchInputs() : %s ReadFromDisk prev tx %s failed", GetHash().ToString().substr(0,10).c_str(), prevout.hash.ToString().substr(0,10).c_str());
- }
- }
-
- // Make sure all prevout.n indexes are valid:
- for (unsigned int i = 0; i < vin.size(); i++)
- {
- const COutPoint prevout = vin[i].prevout;
- assert(inputsRet.count(prevout.hash) != 0);
- const CTxIndex& txindex = inputsRet[prevout.hash].first;
- const CTransaction& txPrev = inputsRet[prevout.hash].second;
- if (prevout.n >= txPrev.vout.size() || prevout.n >= txindex.vSpent.size())
- {
- // Revisit this if/when transaction replacement is implemented and allows
- // adding inputs:
- fInvalid = true;
- return DoS(100, error("FetchInputs() : %s prevout.n out of range %d %"PRIszu" %"PRIszu" prev tx %s\n%s", GetHash().ToString().substr(0,10).c_str(), prevout.n, txPrev.vout.size(), txindex.vSpent.size(), prevout.hash.ToString().substr(0,10).c_str(), txPrev.ToString().c_str()));
- }
- }
-
- return true;
-}
-
-const CTxOut& CTransaction::GetOutputFor(const CTxIn& input, const MapPrevTx& inputs) const
+CTxOut CTransaction::GetOutputFor(const CTxIn& input, CCoinsView& view)
{
- MapPrevTx::const_iterator mi = inputs.find(input.prevout.hash);
- if (mi == inputs.end())
+ CCoins coins;
+ if (!view.GetCoins(input.prevout.hash, coins))
throw std::runtime_error("CTransaction::GetOutputFor() : prevout.hash not found");
- const CTransaction& txPrev = (mi->second).second;
- if (input.prevout.n >= txPrev.vout.size())
- throw std::runtime_error("CTransaction::GetOutputFor() : prevout.n out of range");
+ if (input.prevout.n >= coins.vout.size())
+ throw std::runtime_error("CTransaction::GetOutputFor() : prevout.n out of range or already spent");
+
+ const CTxOut &out = coins.vout[input.prevout.n];
+ if (out.IsNull())
+ throw std::runtime_error("CTransaction::GetOutputFor() : already spent");
- return txPrev.vout[input.prevout.n];
+ return out;
}
-int64 CTransaction::GetValueIn(const MapPrevTx& inputs) const
+int64 CTransaction::GetValueIn(CCoinsView& inputs) const
{
if (IsCoinBase())
return 0;
nResult += GetOutputFor(vin[i], inputs).nValue;
}
return nResult;
-
}
-unsigned int CTransaction::GetP2SHSigOpCount(const MapPrevTx& inputs) const
+unsigned int CTransaction::GetP2SHSigOpCount(CCoinsView& inputs) const
{
if (IsCoinBase())
return 0;
unsigned int nSigOps = 0;
for (unsigned int i = 0; i < vin.size(); i++)
{
- const CTxOut& prevout = GetOutputFor(vin[i], inputs);
+ CTxOut prevout = GetOutputFor(vin[i], inputs);
if (prevout.scriptPubKey.IsPayToScriptHash())
nSigOps += prevout.scriptPubKey.GetSigOpCount(vin[i].scriptSig);
}
return nSigOps;
}
-bool CTransaction::ConnectInputs(CTxDB& txdb, MapPrevTx inputs, map<uint256, CTxIndex>& mapTestPool, const CDiskTxPos& posThisTx,
- const CBlockIndex* pindexBlock, bool fBlock, bool fMiner, bool fStrictPayToScriptHash)
+bool CTransaction::UpdateCoins(CCoinsView &inputs, CTxUndo &txundo, int nHeight, unsigned int nTimeStamp) const
{
- // Take over previous transactions' spent pointers
- // fBlock is true when this is called from AcceptBlock when a new best-block is added to the blockchain
- // fMiner is true when called from the internal bitcoin miner
- // ... both are false when called from CTransaction::AcceptToMemoryPool
- if (!IsCoinBase())
- {
- int64 nValueIn = 0;
- int64 nFees = 0;
- for (unsigned int i = 0; i < vin.size(); i++)
- {
- COutPoint prevout = vin[i].prevout;
- assert(inputs.count(prevout.hash) > 0);
- CTxIndex& txindex = inputs[prevout.hash].first;
- CTransaction& txPrev = inputs[prevout.hash].second;
+ uint256 hash = GetHash();
- if (prevout.n >= txPrev.vout.size() || prevout.n >= txindex.vSpent.size())
- return DoS(100, error("ConnectInputs() : %s prevout.n out of range %d %"PRIszu" %"PRIszu" prev tx %s\n%s", GetHash().ToString().substr(0,10).c_str(), prevout.n, txPrev.vout.size(), txindex.vSpent.size(), prevout.hash.ToString().substr(0,10).c_str(), txPrev.ToString().c_str()));
+ // mark inputs spent
+ if (!IsCoinBase()) {
+ BOOST_FOREACH(const CTxIn &txin, vin) {
+ CCoins coins;
+ if (!inputs.GetCoins(txin.prevout.hash, coins))
+ return error("UpdateCoins() : cannot find prevtx");
- // If prev is coinbase or coinstake, check that it's matured
- if (txPrev.IsCoinBase() || txPrev.IsCoinStake())
- for (const CBlockIndex* pindex = pindexBlock; pindex && pindexBlock->nHeight - pindex->nHeight < nCoinbaseMaturity; pindex = pindex->pprev)
- if (pindex->nBlockPos == txindex.pos.nBlockPos && pindex->nFile == txindex.pos.nFile)
- return error("ConnectInputs() : tried to spend %s at depth %d", txPrev.IsCoinBase() ? "coinbase" : "coinstake", pindexBlock->nHeight - pindex->nHeight);
+ if (coins.nTime > nTimeStamp)
+ return error("UpdateCoins() : timestamp violation");
- // ppcoin: check transaction timestamp
- if (txPrev.nTime > nTime)
- return DoS(100, error("ConnectInputs() : transaction timestamp earlier than input transaction"));
+ CTxInUndo undo;
+ if (!coins.Spend(txin.prevout, undo))
+ return error("UpdateCoins() : cannot spend input");
+ txundo.vprevout.push_back(undo);
+ if (!inputs.SetCoins(txin.prevout.hash, coins))
+ return error("UpdateCoins() : cannot update input");
+ }
+ }
- // Check for negative or overflow input values
- nValueIn += txPrev.vout[prevout.n].nValue;
- if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
- return DoS(100, error("ConnectInputs() : txin values out of range"));
+ // add outputs
+ if (!inputs.SetCoins(hash, CCoins(*this, nHeight, nTimeStamp)))
+ return error("UpdateCoins() : cannot update output");
+
+ return true;
+}
+bool CTransaction::HaveInputs(CCoinsView &inputs) const
+{
+ if (!IsCoinBase()) {
+ // first check whether information about the prevout hash is available
+ for (unsigned int i = 0; i < vin.size(); i++) {
+ const COutPoint &prevout = vin[i].prevout;
+ if (!inputs.HaveCoins(prevout.hash))
+ return false;
}
- // The first loop above does all the inexpensive checks.
- // Only if ALL inputs pass do we perform expensive ECDSA signature checks.
- // Helps prevent CPU exhaustion attacks.
+
+ // then check whether the actual outputs are available
+ for (unsigned int i = 0; i < vin.size(); i++) {
+ const COutPoint &prevout = vin[i].prevout;
+ CCoins coins;
+ inputs.GetCoins(prevout.hash, coins);
+ if (!coins.IsAvailable(prevout.n))
+ return false;
+ }
+ }
+ return true;
+}
+
+bool CTransaction::CheckInputs(CCoinsView &inputs, enum CheckSig_mode csmode, bool fStrictPayToScriptHash, bool fStrictEncodings, CBlock *pblock) const
+{
+ if (!IsCoinBase())
+ {
+ int64 nValueIn = 0;
+ int64 nFees = 0;
for (unsigned int i = 0; i < vin.size(); i++)
{
- COutPoint prevout = vin[i].prevout;
- assert(inputs.count(prevout.hash) > 0);
- CTxIndex& txindex = inputs[prevout.hash].first;
- CTransaction& txPrev = inputs[prevout.hash].second;
+ const COutPoint &prevout = vin[i].prevout;
+ CCoins coins;
+ if (!inputs.GetCoins(prevout.hash, coins))
+ return error("CheckInputs() : cannot find prevout tx");
// Check for conflicts (double-spend)
// This doesn't trigger the DoS code on purpose; if it did, it would make it easier
// for an attacker to attempt to split the network.
- if (!txindex.vSpent[prevout.n].IsNull())
- return fMiner ? false : error("ConnectInputs() : %s prev tx already used at %s", GetHash().ToString().substr(0,10).c_str(), txindex.vSpent[prevout.n].ToString().c_str());
-
- // Skip ECDSA signature verification when connecting blocks (fBlock=true)
- // before the last blockchain checkpoint. This is safe because block merkle hashes are
- // still computed and checked, and any change will be caught at the next checkpoint.
- if (!(fBlock && (nBestHeight < Checkpoints::GetTotalBlocksEstimate())))
- {
- // Verify signature
- if (!VerifySignature(txPrev, *this, i, fStrictPayToScriptHash, 0))
- {
- // only during transition phase for P2SH: do not invoke anti-DoS code for
- // potentially old clients relaying bad P2SH transactions
- if (fStrictPayToScriptHash && VerifySignature(txPrev, *this, i, false, 0))
- return error("ConnectInputs() : %s P2SH VerifySignature failed", GetHash().ToString().substr(0,10).c_str());
+ if (!coins.IsAvailable(prevout.n))
+ return error("CheckInputs() : %s prev tx already used", GetHash().ToString().substr(0,10).c_str());
- return DoS(100,error("ConnectInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,10).c_str()));
- }
+ // If prev is coinbase or coinstake, check that it's matured
+ if (coins.IsCoinBase() || coins.IsCoinStake()) {
+ CBlockIndex *pindexBlock = inputs.GetBestBlock();
+ if (pindexBlock->nHeight - coins.nHeight < nCoinbaseMaturity)
+ return error("CheckInputs() : tried to spend %s at depth %d", coins.IsCoinBase() ? "coinbase" : "coinstake", pindexBlock->nHeight - coins.nHeight);
}
- // Mark outpoints as spent
- txindex.vSpent[prevout.n] = posThisTx;
+ // Check transaction timestamp
+ if (coins.nTime > nTime)
+ return DoS(100, error("CheckInputs() : transaction timestamp earlier than input transaction"));
- // Write back
- if (fBlock || fMiner)
- {
- mapTestPool[prevout.hash] = txindex;
- }
+ // Check for negative or overflow input values
+ nValueIn += coins.vout[prevout.n].nValue;
+ if (!MoneyRange(coins.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
+ return DoS(100, error("CheckInputs() : txin values out of range"));
}
if (IsCoinStake())
{
- // ppcoin: coin stake tx earns reward instead of paying fee
+ if (!pblock)
+ return error("CheckInputs() : %s is a coinstake, but no block specified", GetHash().ToString().substr(0,10).c_str());
+
+ // Coin stake tx earns reward instead of paying fee
uint64 nCoinAge;
- if (!GetCoinAge(txdb, nCoinAge))
- return error("ConnectInputs() : %s unable to get coin age for coinstake", GetHash().ToString().substr(0,10).c_str());
+ if (!GetCoinAge(nCoinAge))
+ return error("CheckInputs() : %s unable to get coin age for coinstake", GetHash().ToString().substr(0,10).c_str());
int64 nStakeReward = GetValueOut() - nValueIn;
- int64 nCalculatedStakeReward = GetProofOfStakeReward(nCoinAge, pindexBlock->nBits, nTime) - GetMinFee() + MIN_TX_FEE;
+ int64 nCalculatedStakeReward = GetProofOfStakeReward(nCoinAge, pblock->nBits, nTime) - GetMinFee() + MIN_TX_FEE;
if (nStakeReward > nCalculatedStakeReward)
- return DoS(100, error("ConnectInputs() : coinstake pays too much(actual=%"PRI64d" vs calculated=%"PRI64d")", nStakeReward, nCalculatedStakeReward));
+ return DoS(100, error("CheckInputs() : coinstake pays too much(actual=%"PRI64d" vs calculated=%"PRI64d")", nStakeReward, nCalculatedStakeReward));
}
else
{
if (nValueIn < GetValueOut())
- return DoS(100, error("ConnectInputs() : %s value in < value out", GetHash().ToString().substr(0,10).c_str()));
+ return DoS(100, error("ChecktInputs() : %s value in < value out", GetHash().ToString().substr(0,10).c_str()));
// Tally transaction fees
int64 nTxFee = nValueIn - GetValueOut();
if (nTxFee < 0)
- return DoS(100, error("ConnectInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,10).c_str()));
+ return DoS(100, error("CheckInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,10).c_str()));
+ nFees += nTxFee;
+ if (!MoneyRange(nFees))
+ return DoS(100, error("CheckInputs() : nFees out of range"));
// enforce transaction fees for every block until 1 May 2014 04:00:00 GMT
if (!fTestNet && nTxFee < GetMinFee() && nTime < OUTPUT_SWITCH_TIME)
- return fBlock? DoS(100, error("ConnectInputs() : %s not paying required fee=%s, paid=%s", GetHash().ToString().substr(0,10).c_str(), FormatMoney(GetMinFee()).c_str(), FormatMoney(nTxFee).c_str())) : false;
+ return pblock? DoS(100, error("CheckInputs() : %s not paying required fee=%s, paid=%s", GetHash().ToString().substr(0,10).c_str(), FormatMoney(GetMinFee()).c_str(), FormatMoney(nTxFee).c_str())) : false;
+ }
- nFees += nTxFee;
- if (!MoneyRange(nFees))
- return DoS(100, error("ConnectInputs() : nFees out of range"));
+ // The first loop above does all the inexpensive checks.
+ // Only if ALL inputs pass do we perform expensive ECDSA signature checks.
+ // Helps prevent CPU exhaustion attacks.
+
+ // Skip ECDSA signature verification when connecting blocks
+ // before the last blockchain checkpoint. This is safe because block merkle hashes are
+ // still computed and checked, and any change will be caught at the next checkpoint.
+ if (csmode == CS_ALWAYS ||
+ (csmode == CS_AFTER_CHECKPOINT && inputs.GetBestBlock()->nHeight >= Checkpoints::GetTotalBlocksEstimate())) {
+ for (unsigned int i = 0; i < vin.size(); i++) {
+ const COutPoint &prevout = vin[i].prevout;
+ CCoins coins;
+ inputs.GetCoins(prevout.hash, coins);
+
+ // Verify signature
+ if (!VerifySignature(coins, *this, i, fStrictPayToScriptHash, fStrictEncodings, 0)) {
+ // only during transition phase for P2SH: do not invoke anti-DoS code for
+ // potentially old clients relaying bad P2SH transactions
+ if (fStrictPayToScriptHash && VerifySignature(coins, *this, i, false, fStrictEncodings, 0))
+ return error("CheckInputs() : %s P2SH VerifySignature failed", GetHash().ToString().substr(0,10).c_str());
+
+ return DoS(100,error("CheckInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,10).c_str()));
+ }
+ }
}
+
+
}
return true;
}
-bool CTransaction::ClientConnectInputs()
+bool CTransaction::ClientCheckInputs() const
{
if (IsCoinBase())
return false;
return false;
// Verify signature
- if (!VerifySignature(txPrev, *this, i, true, 0))
+ if (!VerifySignature(CCoins(txPrev, -1, -1), *this, i, true, false, 0))
return error("ConnectInputs() : VerifySignature failed");
///// this is redundant with the mempool.mapNextTx stuff,
return true;
}
+bool CBlock::DisconnectBlock(CBlockIndex *pindex, CCoinsView &view)
+{
+ assert(pindex == view.GetBestBlock());
+ CBlockUndo blockUndo;
+ {
+ CDiskBlockPos pos = pindex->GetUndoPos();
+ if (pos.IsNull())
+ return error("DisconnectBlock() : no undo data available");
+ FILE *file = OpenUndoFile(pos, true);
+ if (file == NULL)
+ return error("DisconnectBlock() : undo file not available");
+ CAutoFile fileUndo(file, SER_DISK, CLIENT_VERSION);
+ fileUndo >> blockUndo;
+ }
+ assert(blockUndo.vtxundo.size() + 1 == vtx.size());
-bool CBlock::DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex)
-{
- // Disconnect in reverse order
- for (int i = vtx.size()-1; i >= 0; i--)
- if (!vtx[i].DisconnectInputs(txdb))
- return false;
+ // undo transactions in reverse order
+ for (int i = vtx.size() - 1; i >= 0; i--) {
+ const CTransaction &tx = vtx[i];
+ uint256 hash = tx.GetHash();
- // Update block index on disk without changing it in memory.
- // The memory index structure will be changed after the db commits.
- if (pindex->pprev)
- {
- CDiskBlockIndex blockindexPrev(pindex->pprev);
- blockindexPrev.hashNext = 0;
- if (!txdb.WriteBlockIndex(blockindexPrev))
- return error("DisconnectBlock() : WriteBlockIndex failed");
+ // check that all outputs are available
+ CCoins outs;
+ if (!view.GetCoins(hash, outs))
+ return error("DisconnectBlock() : outputs still spent? database corrupted");
+
+ CCoins outsBlock = CCoins(tx, pindex->nHeight, pindex->nTime);
+ if (outs != outsBlock)
+ return error("DisconnectBlock() : added transaction mismatch? database corrupted");
+
+ // remove outputs
+ if (!view.SetCoins(hash, CCoins()))
+ return error("DisconnectBlock() : cannot delete coin outputs");
+
+ // restore inputs
+ if (i > 0) { // not coinbases
+ const CTxUndo &txundo = blockUndo.vtxundo[i-1];
+ assert(txundo.vprevout.size() == tx.vin.size());
+ for (unsigned int j = tx.vin.size(); j-- > 0;) {
+ const COutPoint &out = tx.vin[j].prevout;
+ const CTxInUndo &undo = txundo.vprevout[j];
+ CCoins coins;
+ view.GetCoins(out.hash, coins); // this can fail if the prevout was already entirely spent
+ if (coins.IsPruned()) {
+ if (undo.nHeight == 0)
+ return error("DisconnectBlock() : undo data doesn't contain tx metadata? database corrupted");
+ coins.fCoinBase = undo.fCoinBase;
+ coins.nHeight = undo.nHeight;
+ coins.nVersion = undo.nVersion;
+ } else {
+ if (undo.nHeight != 0)
+ return error("DisconnectBlock() : undo data contains unneeded tx metadata? database corrupted");
+ }
+ if (coins.IsAvailable(out.n))
+ return error("DisconnectBlock() : prevout output not spent? database corrupted");
+ if (coins.vout.size() < out.n+1)
+ coins.vout.resize(out.n+1);
+ coins.vout[out.n] = undo.txout;
+ if (!view.SetCoins(out.hash, coins))
+ return error("DisconnectBlock() : cannot restore coin inputs");
+ }
+ }
}
- // ppcoin: clean up wallet after disconnecting coinstake
- BOOST_FOREACH(CTransaction& tx, vtx)
- SyncWithWallets(tx, this, false, false);
+ // move best block pointer to prevout block
+ view.SetBestBlock(pindex->pprev);
return true;
}
-bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex, bool fJustCheck)
+bool FindUndoPos(CChainDB &chaindb, int nFile, CDiskBlockPos &pos, unsigned int nAddSize);
+
+bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsView &view, bool fJustCheck)
{
- // Check it again in case a previous version let a bad block in, but skip BlockSig checking
- if (!CheckBlock(!fJustCheck, !fJustCheck, false))
+ // Check it again in case a previous version let a bad block in
+ if (!CheckBlock(!fJustCheck, !fJustCheck))
return false;
+ // verify that the view's current state corresponds to the previous block
+ assert(pindex->pprev == view.GetBestBlock());
+
// Do not allow blocks that contain transactions which 'overwrite' older transactions,
// unless those are already completely spent.
// If such overwrites are allowed, coinbases and transactions depending upon those
// Now that the whole chain is irreversibly beyond that time it is applied to all blocks except the
// two in the chain that violate it. This prevents exploiting the issue against nodes in their
// initial block download.
- bool fEnforceBIP30 = true; // Always active in NovaCoin
- bool fStrictPayToScriptHash = true; // Always active in NovaCoin
+ bool fEnforceBIP30 = true;
- //// issue here: it doesn't know the version
- unsigned int nTxPos;
- if (fJustCheck)
- // FetchInputs treats CDiskTxPos(1,1,1) as a special "refer to memorypool" indicator
- // Since we're just checking the block and not actually connecting it, it might not (and probably shouldn't) be on the disk to get the transaction from
- nTxPos = 1;
- else
- nTxPos = pindex->nBlockPos + ::GetSerializeSize(CBlock(), SER_DISK, CLIENT_VERSION) - (2 * GetSizeOfCompactSize(0)) + GetSizeOfCompactSize(vtx.size());
+ if (fEnforceBIP30) {
+ BOOST_FOREACH(CTransaction& tx, vtx) {
+ uint256 hash = tx.GetHash();
+ CCoins coins;
+ if (view.GetCoins(hash, coins) && !coins.IsPruned())
+ return error("ConnectBlock() : tried to overwrite transaction");
+ }
+ }
- map<uint256, CTxIndex> mapQueuedChanges;
- int64 nFees = 0;
- int64 nValueIn = 0;
- int64 nValueOut = 0;
+ // BIP16 always active
+ bool fStrictPayToScriptHash = true;
+
+ CBlockUndo blockundo;
+
+ int64 nFees = 0, nValueIn = 0, nValueOut = 0;
unsigned int nSigOps = 0;
BOOST_FOREACH(CTransaction& tx, vtx)
{
- uint256 hashTx = tx.GetHash();
-
- if (fEnforceBIP30) {
- CTxIndex txindexOld;
- if (txdb.ReadTxIndex(hashTx, txindexOld)) {
- BOOST_FOREACH(CDiskTxPos &pos, txindexOld.vSpent)
- if (pos.IsNull())
- return false;
- }
- }
-
nSigOps += tx.GetLegacySigOpCount();
if (nSigOps > MAX_BLOCK_SIGOPS)
return DoS(100, error("ConnectBlock() : too many sigops"));
- CDiskTxPos posThisTx(pindex->nFile, pindex->nBlockPos, nTxPos);
- if (!fJustCheck)
- nTxPos += ::GetSerializeSize(tx, SER_DISK, CLIENT_VERSION);
-
- MapPrevTx mapInputs;
- if (tx.IsCoinBase())
- nValueOut += tx.GetValueOut();
- else
+ if (!tx.IsCoinBase())
{
- bool fInvalid;
- if (!tx.FetchInputs(txdb, mapQueuedChanges, true, false, mapInputs, fInvalid))
- return false;
+ if (!tx.HaveInputs(view))
+ return DoS(100, error("ConnectBlock() : inputs missing/spent"));
if (fStrictPayToScriptHash)
{
// Add in sigops done by pay-to-script-hash inputs;
// this is to prevent a "rogue miner" from creating
// an incredibly-expensive-to-validate block.
- nSigOps += tx.GetP2SHSigOpCount(mapInputs);
+ nSigOps += tx.GetP2SHSigOpCount(view);
if (nSigOps > MAX_BLOCK_SIGOPS)
- return DoS(100, error("ConnectBlock() : too many sigops"));
+ return DoS(100, error("ConnectBlock() : too many sigops"));
}
- int64 nTxValueIn = tx.GetValueIn(mapInputs);
int64 nTxValueOut = tx.GetValueOut();
+ int64 nTxValueIn = tx.GetValueIn(view);
+
nValueIn += nTxValueIn;
nValueOut += nTxValueOut;
+
if (!tx.IsCoinStake())
nFees += nTxValueIn - nTxValueOut;
- if (!tx.ConnectInputs(txdb, mapInputs, mapQueuedChanges, posThisTx, pindex, true, false, fStrictPayToScriptHash))
+ if (!tx.CheckInputs(view, CS_AFTER_CHECKPOINT, fStrictPayToScriptHash, false, this))
return false;
}
+ else
+ {
+ nValueOut += tx.GetValueOut();
+ }
- mapQueuedChanges[hashTx] = CTxIndex(posThisTx, tx.vout.size());
+ CTxUndo txundo;
+ if (!tx.UpdateCoins(view, txundo, pindex->nHeight, pindex->nTime))
+ return error("ConnectBlock() : UpdateInputs failed");
+ if (!tx.IsCoinBase())
+ blockundo.vtxundo.push_back(txundo);
}
- // ppcoin: track money supply and mint amount info
pindex->nMint = nValueOut - nValueIn + nFees;
pindex->nMoneySupply = (pindex->pprev? pindex->pprev->nMoneySupply : 0) + nValueOut - nValueIn;
- if (!txdb.WriteBlockIndex(CDiskBlockIndex(pindex)))
- return error("Connect() : WriteBlockIndex for pindex failed");
-
- // ppcoin: fees are not collected by miners as in bitcoin
- // ppcoin: fees are destroyed to compensate the entire network
- if (fDebug && GetBoolArg("-printcreation"))
- printf("ConnectBlock() : destroy=%s nFees=%"PRI64d"\n", FormatMoney(nFees).c_str(), nFees);
if (fJustCheck)
return true;
- // Write queued txindex changes
- for (map<uint256, CTxIndex>::iterator mi = mapQueuedChanges.begin(); mi != mapQueuedChanges.end(); ++mi)
- {
- if (!txdb.UpdateTxIndex((*mi).first, (*mi).second))
- return error("ConnectBlock() : UpdateTxIndex failed");
- }
+ CChainDB chaindb;
+ CDiskBlockPos pos;
- // Update block index on disk without changing it in memory.
- // The memory index structure will be changed after the db commits.
- if (pindex->pprev)
+ // Write undo information to disk
+ if (pindex->GetUndoPos().IsNull())
{
- CDiskBlockIndex blockindexPrev(pindex->pprev);
- blockindexPrev.hashNext = pindex->GetBlockHash();
- if (!txdb.WriteBlockIndex(blockindexPrev))
- return error("ConnectBlock() : WriteBlockIndex failed");
+ if (!FindUndoPos(chaindb, pindex->pos.nFile, pos, ::GetSerializeSize(blockundo, SER_DISK, CLIENT_VERSION) + 8))
+ return error("ConnectBlock() : FindUndoPos failed");
+ if (!blockundo.WriteToDisk(pos))
+ return error("ConnectBlock() : CBlockUndo::WriteToDisk failed");
+
+ // update nUndoPos in block index
+ pindex->nUndoPos = pos.nPos + 1;
}
+ CDiskBlockIndex blockindex(pindex);
+ if (!chaindb.WriteBlockIndex(blockindex))
+ return error("ConnectBlock() : WriteBlockIndex failed");
+
+ // add this block to the view's blockchain
+ if (!view.SetBestBlock(pindex))
+ return false;
+
+ // fees are destroyed to compensate the entire network
+ if (fDebug && GetBoolArg("-printcreation"))
+ printf("ConnectBlock() : destroy=%s nFees=%"PRI64d"\n", FormatMoney(nFees).c_str(), nFees);
+
// Watch for transactions paying to me
BOOST_FOREACH(CTransaction& tx, vtx)
SyncWithWallets(tx, this, true);
return true;
}
-bool static Reorganize(CTxDB& txdb, CBlockIndex* pindexNew)
+bool CBlock::SetBestChain(CBlockIndex* pindexNew)
{
- printf("REORGANIZE\n");
+ CCoinsViewCache &view = *pcoinsTip;
+
+ // special case for attaching the genesis block
+ // note that no ConnectBlock is called, so its coinbase output is non-spendable
+ if (pindexGenesisBlock == NULL && pindexNew->GetBlockHash() == (!fTestNet ? hashGenesisBlock : hashGenesisBlockTestNet))
+ {
+ view.SetBestBlock(pindexNew);
+ if (!view.Flush())
+ return false;
+ pindexGenesisBlock = pindexNew;
+ pindexBest = pindexNew;
+ hashBestChain = pindexNew->GetBlockHash();
+ nBestHeight = pindexBest->nHeight;
+ nBestChainTrust = pindexNew->nChainTrust;
+ return true;
+ }
- // Find the fork
- CBlockIndex* pfork = pindexBest;
+ // Find the fork (typically, there is none)
+ CBlockIndex* pfork = view.GetBestBlock();
CBlockIndex* plonger = pindexNew;
while (pfork != plonger)
{
while (plonger->nHeight > pfork->nHeight)
if (!(plonger = plonger->pprev))
- return error("Reorganize() : plonger->pprev is null");
+ return error("SetBestChain() : plonger->pprev is null");
if (pfork == plonger)
break;
if (!(pfork = pfork->pprev))
- return error("Reorganize() : pfork->pprev is null");
+ return error("SetBestChain() : pfork->pprev is null");
}
- // List of what to disconnect
+ // List of what to disconnect (typically nothing)
vector<CBlockIndex*> vDisconnect;
- for (CBlockIndex* pindex = pindexBest; pindex != pfork; pindex = pindex->pprev)
+ for (CBlockIndex* pindex = view.GetBestBlock(); pindex != pfork; pindex = pindex->pprev)
vDisconnect.push_back(pindex);
- // List of what to connect
+ // List of what to connect (typically only pindexNew)
vector<CBlockIndex*> vConnect;
for (CBlockIndex* pindex = pindexNew; pindex != pfork; pindex = pindex->pprev)
vConnect.push_back(pindex);
reverse(vConnect.begin(), vConnect.end());
- printf("REORGANIZE: Disconnect %"PRIszu" blocks; %s..%s\n", vDisconnect.size(), pfork->GetBlockHash().ToString().substr(0,20).c_str(), pindexBest->GetBlockHash().ToString().substr(0,20).c_str());
- printf("REORGANIZE: Connect %"PRIszu" blocks; %s..%s\n", vConnect.size(), pfork->GetBlockHash().ToString().substr(0,20).c_str(), pindexNew->GetBlockHash().ToString().substr(0,20).c_str());
+ if (vDisconnect.size() > 0) {
+ printf("REORGANIZE: Disconnect %"PRIszu" blocks; %s..%s\n", vDisconnect.size(), pfork->GetBlockHash().ToString().substr(0,20).c_str(), pindexBest->GetBlockHash().ToString().substr(0,20).c_str());
+ printf("REORGANIZE: Connect %"PRIszu" blocks; %s..%s\n", vConnect.size(), pfork->GetBlockHash().ToString().substr(0,20).c_str(), pindexNew->GetBlockHash().ToString().substr(0,20).c_str());
+ }
// Disconnect shorter branch
vector<CTransaction> vResurrect;
- BOOST_FOREACH(CBlockIndex* pindex, vDisconnect)
- {
+ BOOST_FOREACH(CBlockIndex* pindex, vDisconnect) {
CBlock block;
if (!block.ReadFromDisk(pindex))
- return error("Reorganize() : ReadFromDisk for disconnect failed");
- if (!block.DisconnectBlock(txdb, pindex))
- return error("Reorganize() : DisconnectBlock %s failed", pindex->GetBlockHash().ToString().substr(0,20).c_str());
+ return error("SetBestBlock() : ReadFromDisk for disconnect failed");
+ CCoinsViewCache viewTemp(view, true);
+ if (!block.DisconnectBlock(pindex, viewTemp))
+ return error("SetBestBlock() : DisconnectBlock %s failed", pindex->GetBlockHash().ToString().substr(0,20).c_str());
+ if (!viewTemp.Flush())
+ return error("SetBestBlock() : Cache flush failed after disconnect");
// Queue memory transactions to resurrect
BOOST_FOREACH(const CTransaction& tx, block.vtx)
- if (!(tx.IsCoinBase() || tx.IsCoinStake()))
+ if (!tx.IsCoinBase())
vResurrect.push_back(tx);
}
// Connect longer branch
vector<CTransaction> vDelete;
- for (unsigned int i = 0; i < vConnect.size(); i++)
- {
- CBlockIndex* pindex = vConnect[i];
+ BOOST_FOREACH(CBlockIndex *pindex, vConnect) {
CBlock block;
- if (!block.ReadFromDisk(pindex))
- return error("Reorganize() : ReadFromDisk for connect failed");
- if (!block.ConnectBlock(txdb, pindex))
- {
- // Invalid block
- return error("Reorganize() : ConnectBlock %s failed", pindex->GetBlockHash().ToString().substr(0,20).c_str());
+ CBlock *pblock;
+ if (pindex == pindexNew) // connecting *this block
+ pblock = this;
+ else { // other block; read it from disk
+ if (!block.ReadFromDisk(pindex))
+ return error("SetBestBlock() : ReadFromDisk for connect failed");
+ pblock = █
+ }
+ CCoinsViewCache viewTemp(view, true);
+ if (!pblock->ConnectBlock(pindex, viewTemp)) {
+ InvalidChainFound(pindexNew);
+ return error("SetBestBlock() : ConnectBlock %s failed", pindex->GetBlockHash().ToString().substr(0,20).c_str());
}
+ if (!viewTemp.Flush())
+ return error("SetBestBlock() : Cache flush failed after connect");
// Queue memory transactions to delete
- BOOST_FOREACH(const CTransaction& tx, block.vtx)
+ BOOST_FOREACH(const CTransaction& tx, pblock->vtx)
vDelete.push_back(tx);
}
- if (!txdb.WriteHashBestChain(pindexNew->GetBlockHash()))
- return error("Reorganize() : WriteHashBestChain failed");
// Make sure it's successfully written to disk before changing memory structure
- if (!txdb.TxnCommit())
- return error("Reorganize() : TxnCommit failed");
+ bool fIsInitialDownload = IsInitialBlockDownload();
+ if (!fIsInitialDownload || view.GetCacheSize()>5000)
+ if (!view.Flush())
+ return false;
+
+ // At this point, all changes have been done to the database.
+ // Proceed by updating the memory structures.
// Disconnect shorter branch
BOOST_FOREACH(CBlockIndex* pindex, vDisconnect)
// Resurrect memory transactions that were in the disconnected branch
BOOST_FOREACH(CTransaction& tx, vResurrect)
- tx.AcceptToMemoryPool(txdb, false);
+ tx.AcceptToMemoryPool(false);
// Delete redundant memory transactions that are in the connected branch
BOOST_FOREACH(CTransaction& tx, vDelete)
mempool.remove(tx);
- printf("REORGANIZE: done\n");
-
- return true;
-}
-
-
-// Called from inside SetBestChain: attaches a block to the new best chain being built
-bool CBlock::SetBestChainInner(CTxDB& txdb, CBlockIndex *pindexNew)
-{
- uint256 hash = GetHash();
-
- // Adding to current best branch
- if (!ConnectBlock(txdb, pindexNew) || !txdb.WriteHashBestChain(hash))
- {
- txdb.TxnAbort();
- InvalidChainFound(pindexNew);
- return false;
- }
- if (!txdb.TxnCommit())
- return error("SetBestChain() : TxnCommit failed");
-
- // Add to current best branch
- pindexNew->pprev->pnext = pindexNew;
-
- // Delete redundant memory transactions
- BOOST_FOREACH(CTransaction& tx, vtx)
- mempool.remove(tx);
-
- return true;
-}
-
-bool CBlock::SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew)
-{
- uint256 hash = GetHash();
-
- if (!txdb.TxnBegin())
- return error("SetBestChain() : TxnBegin failed");
-
- if (pindexGenesisBlock == NULL && hash == (!fTestNet ? hashGenesisBlock : hashGenesisBlockTestNet))
- {
- txdb.WriteHashBestChain(hash);
- if (!txdb.TxnCommit())
- return error("SetBestChain() : TxnCommit failed");
- pindexGenesisBlock = pindexNew;
- }
- else if (hashPrevBlock == hashBestChain)
- {
- if (!SetBestChainInner(txdb, pindexNew))
- return error("SetBestChain() : SetBestChainInner failed");
- }
- else
- {
- // the first block in the new chain that will cause it to become the new best chain
- CBlockIndex *pindexIntermediate = pindexNew;
-
- // list of blocks that need to be connected afterwards
- std::vector<CBlockIndex*> vpindexSecondary;
-
- // Reorganize is costly in terms of db load, as it works in a single db transaction.
- // Try to limit how much needs to be done inside
- while (pindexIntermediate->pprev && pindexIntermediate->pprev->nChainTrust > pindexBest->nChainTrust)
- {
- vpindexSecondary.push_back(pindexIntermediate);
- pindexIntermediate = pindexIntermediate->pprev;
- }
-
- if (!vpindexSecondary.empty())
- printf("Postponing %"PRIszu" reconnects\n", vpindexSecondary.size());
-
- // Switch to new best branch
- if (!Reorganize(txdb, pindexIntermediate))
- {
- txdb.TxnAbort();
- InvalidChainFound(pindexNew);
- return error("SetBestChain() : Reorganize failed");
- }
-
- // Connect further blocks
- BOOST_REVERSE_FOREACH(CBlockIndex *pindex, vpindexSecondary)
- {
- CBlock block;
- if (!block.ReadFromDisk(pindex))
- {
- printf("SetBestChain() : ReadFromDisk failed\n");
- break;
- }
- if (!txdb.TxnBegin()) {
- printf("SetBestChain() : TxnBegin 2 failed\n");
- break;
- }
- // errors now are not fatal, we still did a reorganisation to a new chain in a valid way
- if (!block.SetBestChainInner(txdb, pindex))
- break;
- }
- }
-
// Update best block in wallet (so we can detect restored wallets)
- bool fIsInitialDownload = IsInitialBlockDownload();
if (!fIsInitialDownload)
{
const CBlockLocator locator(pindexNew);
}
// New best block
- hashBestChain = hash;
+ hashBestChain = pindexNew->GetBlockHash();
pindexBest = pindexNew;
pblockindexFBBHLast = NULL;
nBestHeight = pindexBest->nHeight;
return true;
}
-// ppcoin: total coin age spent in transaction, in the unit of coin-days.
+// Total coin age spent in transaction, in the unit of coin-days.
// Only those coins meeting minimum age requirement counts. As those
// transactions not in main chain are not currently indexed so we
// might not find out about their coin age. Older transactions are
// guaranteed to be in main chain by sync-checkpoint. This rule is
// introduced to help nodes establish a consistent view of the coin
// age (trust score) of competing branches.
-bool CTransaction::GetCoinAge(CTxDB& txdb, uint64& nCoinAge) const
+bool CTransaction::GetCoinAge(uint64& nCoinAge) const
{
+ CCoinsViewCache &inputs = *pcoinsTip;
+
CBigNum bnCentSecond = 0; // coin age in the unit of cent-seconds
nCoinAge = 0;
if (IsCoinBase())
return true;
- BOOST_FOREACH(const CTxIn& txin, vin)
+ for (unsigned int i = 0; i < vin.size(); i++)
{
- // First try finding the previous transaction in database
- CTransaction txPrev;
- CTxIndex txindex;
- if (!txPrev.ReadFromDisk(txdb, txin.prevout, txindex))
- continue; // previous transaction not in main chain
- if (nTime < txPrev.nTime)
- return false; // Transaction timestamp violation
+ const COutPoint &prevout = vin[i].prevout;
+ CCoins coins;
+ if (!inputs.GetCoins(prevout.hash, coins))
+ continue;
- // Read block header
- CBlock block;
- if (!block.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos, false))
- return false; // unable to read block of previous transaction
- if (block.GetBlockTime() + nStakeMinAge > nTime)
- continue; // only count coins meeting min age requirement
+ if (nTime < coins.nTime)
+ return false; // Transaction timestamp violation
- int64 nValueIn = txPrev.vout[txin.prevout.n].nValue;
- bnCentSecond += CBigNum(nValueIn) * (nTime-txPrev.nTime) / CENT;
+ // only count coins meeting min age requirement
+ if (coins.nBlockTime + nStakeMinAge > nTime)
+ continue;
- if (fDebug && GetBoolArg("-printcoinage"))
- printf("coin age nValueIn=%"PRI64d" nTimeDiff=%d bnCentSecond=%s\n", nValueIn, nTime - txPrev.nTime, bnCentSecond.ToString().c_str());
+ int64 nValueIn = coins.vout[vin[i].prevout.n].nValue;
+ bnCentSecond += CBigNum(nValueIn) * (nTime-coins.nTime) / CENT;
}
CBigNum bnCoinDay = bnCentSecond * CENT / COIN / (24 * 60 * 60);
return true;
}
-// ppcoin: total coin age spent in block, in the unit of coin-days.
+// Total coin age spent in block, in the unit of coin-days.
bool CBlock::GetCoinAge(uint64& nCoinAge) const
{
nCoinAge = 0;
- CTxDB txdb("r");
BOOST_FOREACH(const CTransaction& tx, vtx)
{
uint64 nTxCoinAge;
- if (tx.GetCoinAge(txdb, nTxCoinAge))
+ if (tx.GetCoinAge(nTxCoinAge))
nCoinAge += nTxCoinAge;
else
return false;
return true;
}
-bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos)
+bool CBlock::AddToBlockIndex(const CDiskBlockPos &pos)
{
// Check for duplicate
uint256 hash = GetHash();
return error("AddToBlockIndex() : %s already exists", hash.ToString().substr(0,20).c_str());
// Construct new block index object
- CBlockIndex* pindexNew = new CBlockIndex(nFile, nBlockPos, *this);
+ CBlockIndex* pindexNew = new CBlockIndex(*this);
if (!pindexNew)
return error("AddToBlockIndex() : new CBlockIndex failed");
- pindexNew->phashBlock = &hash;
+ map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
+ pindexNew->phashBlock = &((*mi).first);
map<uint256, CBlockIndex*>::iterator miPrev = mapBlockIndex.find(hashPrevBlock);
if (miPrev != mapBlockIndex.end())
{
pindexNew->pprev = (*miPrev).second;
pindexNew->nHeight = pindexNew->pprev->nHeight + 1;
}
-
- // ppcoin: compute chain trust score
pindexNew->nChainTrust = (pindexNew->pprev ? pindexNew->pprev->nChainTrust : 0) + pindexNew->GetBlockTrust();
+ pindexNew->pos = pos;
+ pindexNew->nUndoPos = 0;
- // ppcoin: compute stake entropy bit for stake modifier
+ // Compute stake entropy bit for stake modifier
if (!pindexNew->SetStakeEntropyBit(GetStakeEntropyBit(pindexNew->nTime)))
return error("AddToBlockIndex() : SetStakeEntropyBit() failed");
- // ppcoin: record proof-of-stake hash value
+ // Record proof-of-stake hash value
if (pindexNew->IsProofOfStake())
{
if (!mapProofOfStake.count(hash))
pindexNew->hashProofOfStake = mapProofOfStake[hash];
}
- // ppcoin: compute stake modifier
+ // Compute stake modifier
uint64 nStakeModifier = 0;
bool fGeneratedStakeModifier = false;
if (!ComputeNextStakeModifier(pindexNew->pprev, nStakeModifier, fGeneratedStakeModifier))
if (!CheckStakeModifierCheckpoints(pindexNew->nHeight, pindexNew->nStakeModifierChecksum))
return error("AddToBlockIndex() : Rejected by stake modifier checkpoint height=%d, modifier=0x%016"PRI64x, pindexNew->nHeight, nStakeModifier);
- // Add to mapBlockIndex
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
- if (pindexNew->IsProofOfStake())
- setStakeSeen.insert(make_pair(pindexNew->prevoutStake, pindexNew->nStakeTime));
- pindexNew->phashBlock = &((*mi).first);
-
- // Write to disk block index
- CTxDB txdb;
- if (!txdb.TxnBegin())
+ CChainDB chaindb;
+ if (!chaindb.TxnBegin())
return false;
- txdb.WriteBlockIndex(CDiskBlockIndex(pindexNew));
- if (!txdb.TxnCommit())
+ chaindb.WriteBlockIndex(CDiskBlockIndex(pindexNew));
+ if (!chaindb.TxnCommit())
return false;
// New best
- if (pindexNew->nChainTrust > nBestChainTrust)
- if (!SetBestChain(txdb, pindexNew))
- return false;
+ if (!SetBestChain(pindexNew))
+ return false;
if (pindexNew == pindexBest)
{
return true;
}
+bool FindBlockPos(CChainDB &chaindb, CDiskBlockPos &pos, unsigned int nAddSize, unsigned int nHeight, uint64 nTime)
+{
+ bool fUpdatedLast = false;
+
+ LOCK(cs_LastBlockFile);
+
+ while (infoLastBlockFile.nSize + nAddSize >= MAX_BLOCKFILE_SIZE) {
+ printf("Leaving block file %i: %s\n", nLastBlockFile, infoLastBlockFile.ToString().c_str());
+ FILE *file = OpenBlockFile(pos);
+ FileCommit(file);
+ fclose(file);
+ file = OpenUndoFile(pos);
+ FileCommit(file);
+ fclose(file);
+ nLastBlockFile++;
+ infoLastBlockFile.SetNull();
+ chaindb.ReadBlockFileInfo(nLastBlockFile, infoLastBlockFile); // check whether data for the new file somehow already exist; can fail just fine
+ fUpdatedLast = true;
+ }
+
+ pos.nFile = nLastBlockFile;
+ pos.nPos = infoLastBlockFile.nSize;
+ infoLastBlockFile.nSize += nAddSize;
+ infoLastBlockFile.AddBlock(nHeight, nTime);
+
+ unsigned int nOldChunks = (pos.nPos + BLOCKFILE_CHUNK_SIZE - 1) / BLOCKFILE_CHUNK_SIZE;
+ unsigned int nNewChunks = (infoLastBlockFile.nSize + BLOCKFILE_CHUNK_SIZE - 1) / BLOCKFILE_CHUNK_SIZE;
+ if (nNewChunks > nOldChunks) {
+ FILE *file = OpenBlockFile(pos);
+ if (file) {
+ printf("Pre-allocating up to position 0x%x in blk%05u.dat\n", nNewChunks * BLOCKFILE_CHUNK_SIZE, pos.nFile);
+ AllocateFileRange(file, pos.nPos, nNewChunks * BLOCKFILE_CHUNK_SIZE - pos.nPos);
+ }
+ fclose(file);
+ }
+
+ if (!chaindb.WriteBlockFileInfo(nLastBlockFile, infoLastBlockFile))
+ return error("FindBlockPos() : cannot write updated block info");
+ if (fUpdatedLast)
+ chaindb.WriteLastBlockFile(nLastBlockFile);
+
+ return true;
+}
+
+bool FindUndoPos(CChainDB &chaindb, int nFile, CDiskBlockPos &pos, unsigned int nAddSize)
+{
+ pos.nFile = nFile;
+
+ LOCK(cs_LastBlockFile);
+
+ unsigned int nNewSize;
+ if (nFile == nLastBlockFile) {
+ pos.nPos = infoLastBlockFile.nUndoSize;
+ nNewSize = (infoLastBlockFile.nUndoSize += nAddSize);
+ if (!chaindb.WriteBlockFileInfo(nLastBlockFile, infoLastBlockFile))
+ return error("FindUndoPos() : cannot write updated block info");
+ } else {
+ CBlockFileInfo info;
+ if (!chaindb.ReadBlockFileInfo(nFile, info))
+ return error("FindUndoPos() : cannot read block info");
+ pos.nPos = info.nUndoSize;
+ nNewSize = (info.nUndoSize += nAddSize);
+ if (!chaindb.WriteBlockFileInfo(nFile, info))
+ return error("FindUndoPos() : cannot write updated block info");
+ }
+ unsigned int nOldChunks = (pos.nPos + UNDOFILE_CHUNK_SIZE - 1) / UNDOFILE_CHUNK_SIZE;
+ unsigned int nNewChunks = (nNewSize + UNDOFILE_CHUNK_SIZE - 1) / UNDOFILE_CHUNK_SIZE;
+ if (nNewChunks > nOldChunks) {
+ FILE *file = OpenUndoFile(pos);
+ if (file) {
+ printf("Pre-allocating up to position 0x%x in rev%05u.dat\n", nNewChunks * UNDOFILE_CHUNK_SIZE, pos.nFile);
+ AllocateFileRange(file, pos.nPos, nNewChunks * UNDOFILE_CHUNK_SIZE - pos.nPos);
+ }
+ fclose(file);
+ }
+ return true;
+}
bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot, bool fCheckSig) const
{
return DoS(50, error("CheckBlock() : proof of work failed"));
// Check timestamp
- if (GetBlockTime() > FutureDrift(GetAdjustedTime()))
+ if (GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)
return error("CheckBlock() : block timestamp too far in the future");
// First transaction must be coinbase, the rest must not be
}
}
+
// Check transactions
BOOST_FOREACH(const CTransaction& tx, vtx)
{
if (!tx.CheckTransaction())
return DoS(tx.nDoS, error("CheckBlock() : CheckTransaction failed"));
- // ppcoin: check transaction timestamp
+ // check transaction timestamp
if (GetBlockTime() < (int64)tx.nTime)
return DoS(50, error("CheckBlock() : block timestamp earlier than transaction timestamp"));
}
if (fCheckMerkleRoot && hashMerkleRoot != BuildMerkleTree())
return DoS(100, error("CheckBlock() : hashMerkleRoot mismatch"));
-
return true;
}
+
bool CBlock::AcceptBlock()
{
// Check for duplicate
return DoS(100, error("AcceptBlock() : block height mismatch in coinbase"));
// Write block to history file
+ unsigned int nBlockSize = ::GetSerializeSize(*this, SER_DISK, CLIENT_VERSION);
if (!CheckDiskSpace(::GetSerializeSize(*this, SER_DISK, CLIENT_VERSION)))
return error("AcceptBlock() : out of disk space");
- unsigned int nFile = -1;
- unsigned int nBlockPos = 0;
- if (!WriteToDisk(nFile, nBlockPos))
+ CDiskBlockPos blockPos;
+ {
+ CChainDB chaindb;
+ if (!FindBlockPos(chaindb, blockPos, nBlockSize+8, nHeight, nTime))
+ return error("AcceptBlock() : FindBlockPos failed");
+ }
+ if (!WriteToDisk(blockPos))
return error("AcceptBlock() : WriteToDisk failed");
- if (!AddToBlockIndex(nFile, nBlockPos))
+ if (!AddToBlockIndex(blockPos))
return error("AcceptBlock() : AddToBlockIndex failed");
// Relay inventory, but don't relay old inventory during initial block download
pnode->PushInventory(CInv(MSG_BLOCK, hash));
}
- // ppcoin: check pending sync-checkpoint
+ // Check pending sync-checkpoint
Checkpoints::AcceptPendingSyncCheckpoint();
return true;
return true;
}
-static filesystem::path BlockFilePath(unsigned int nFile)
-{
- string strBlockFn = strprintf("blk%04u.dat", nFile);
- return GetDataDir() / strBlockFn;
-}
-FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode)
+CCriticalSection cs_LastBlockFile;
+CBlockFileInfo infoLastBlockFile;
+int nLastBlockFile = 0;
+
+FILE* OpenDiskFile(const CDiskBlockPos &pos, const char *prefix, bool fReadOnly)
{
- if ((nFile < 1) || (nFile == (unsigned int) -1))
+ if (pos.IsNull())
return NULL;
- FILE* file = fopen(BlockFilePath(nFile).string().c_str(), pszMode);
- if (!file)
+ boost::filesystem::path path = GetDataDir() / "blocks" / strprintf("%s%05u.dat", prefix, pos.nFile);
+ boost::filesystem::create_directories(path.parent_path());
+ FILE* file = fopen(path.string().c_str(), "rb+");
+ if (!file && !fReadOnly)
+ file = fopen(path.string().c_str(), "wb+");
+ if (!file) {
+ printf("Unable to open file %s\n", path.string().c_str());
return NULL;
- if (nBlockPos != 0 && !strchr(pszMode, 'a') && !strchr(pszMode, 'w'))
- {
- if (fseek(file, nBlockPos, SEEK_SET) != 0)
- {
+ }
+ if (pos.nPos) {
+ if (fseek(file, pos.nPos, SEEK_SET)) {
+ printf("Unable to seek to position %u of %s\n", pos.nPos, path.string().c_str());
fclose(file);
return NULL;
}
return file;
}
-static unsigned int nCurrentBlockFile = 1;
+FILE* OpenBlockFile(const CDiskBlockPos &pos, bool fReadOnly) {
+ return OpenDiskFile(pos, "blk", fReadOnly);
+}
-FILE* AppendBlockFile(unsigned int& nFileRet)
-{
- nFileRet = 0;
- while (true)
- {
- FILE* file = OpenBlockFile(nCurrentBlockFile, 0, "ab");
- if (!file)
- return NULL;
- if (fseek(file, 0, SEEK_END) != 0)
- return NULL;
- // FAT32 file size max 4GB, fseek and ftell max 2GB, so we must stay under 2GB
- if (ftell(file) < (long)(0x7F000000 - MAX_SIZE))
- {
- nFileRet = nCurrentBlockFile;
- return file;
- }
- fclose(file);
- nCurrentBlockFile++;
- }
+FILE *OpenUndoFile(const CDiskBlockPos &pos, bool fReadOnly) {
+ return OpenDiskFile(pos, "rev", fReadOnly);
}
bool LoadBlockIndex(bool fAllowNew)
//
// Load block index
//
- CTxDB txdb("cr+");
- if (!txdb.LoadBlockIndex())
+ CChainDB chaindb("cr");
+ if (!LoadBlockIndex(chaindb))
return false;
+ chaindb.Close();
//
// Init with genesis block
block.nNonce = !fTestNet ? 1575379 : 46534;
//// debug print
+ uint256 hash = block.GetHash();
+ printf("%s\n", hash.ToString().c_str());
assert(block.hashMerkleRoot == uint256("0x4cb33b3b6a861dcbc685d3e614a9cafb945738d6833f182855679f2fad02057b"));
block.print();
- assert(block.GetHash() == (!fTestNet ? hashGenesisBlock : hashGenesisBlockTestNet));
+ assert(hash == (!fTestNet ? hashGenesisBlock : hashGenesisBlockTestNet));
assert(block.CheckBlock());
// Start new block file
- unsigned int nFile;
- unsigned int nBlockPos;
- if (!block.WriteToDisk(nFile, nBlockPos))
+ unsigned int nBlockSize = ::GetSerializeSize(block, SER_DISK, CLIENT_VERSION);
+ CDiskBlockPos blockPos;
+ {
+ CChainDB chaindb;
+ if (!FindBlockPos(chaindb, blockPos, nBlockSize+8, 0, block.nTime))
+ return error("AcceptBlock() : FindBlockPos failed");
+ }
+ if (!block.WriteToDisk(blockPos))
return error("LoadBlockIndex() : writing genesis block to disk failed");
- if (!block.AddToBlockIndex(nFile, nBlockPos))
+ if (!block.AddToBlockIndex(blockPos))
return error("LoadBlockIndex() : genesis block not accepted");
- // ppcoin: initialize synchronized checkpoint
+ // initialize synchronized checkpoint
if (!Checkpoints::WriteSyncCheckpoint((!fTestNet ? hashGenesisBlock : hashGenesisBlockTestNet)))
return error("LoadBlockIndex() : failed to init sync checkpoint");
}
string strPubKey = "";
-
- // if checkpoint master key changed must reset sync-checkpoint
- if (!txdb.ReadCheckpointPubKey(strPubKey) || strPubKey != CSyncCheckpoint::strMasterPubKey)
{
- // write checkpoint master key to db
- txdb.TxnBegin();
- if (!txdb.WriteCheckpointPubKey(CSyncCheckpoint::strMasterPubKey))
- return error("LoadBlockIndex() : failed to write new checkpoint master key to db");
- if (!txdb.TxnCommit())
- return error("LoadBlockIndex() : failed to commit new checkpoint master key to db");
- if ((!fTestNet) && !Checkpoints::ResetSyncCheckpoint())
- return error("LoadBlockIndex() : failed to reset sync-checkpoint");
+ CChainDB chaindb;
+ // if checkpoint master key changed must reset sync-checkpoint
+ if (!chaindb.ReadCheckpointPubKey(strPubKey) || strPubKey != CSyncCheckpoint::strMasterPubKey)
+ {
+ // write checkpoint master key to db
+ chaindb.TxnBegin();
+ if (!chaindb.WriteCheckpointPubKey(CSyncCheckpoint::strMasterPubKey))
+ return error("LoadBlockIndex() : failed to write new checkpoint master key to db");
+ if (!chaindb.TxnCommit())
+ return error("LoadBlockIndex() : failed to commit new checkpoint master key to db");
+ if ((!fTestNet) && !Checkpoints::ResetSyncCheckpoint())
+ return error("LoadBlockIndex() : failed to reset sync-checkpoint");
+ }
}
return true;
}
-
-
void PrintBlockTree()
{
// pre-compute tree structure
// print item
CBlock block;
block.ReadFromDisk(pindex);
- printf("%d (%u,%u) %s %08x %s mint %7s tx %"PRIszu"",
+ printf("%d (blk%05u.dat:0x%x) %s tx %"PRIszu"",
pindex->nHeight,
- pindex->nFile,
- pindex->nBlockPos,
- block.GetHash().ToString().c_str(),
- block.nBits,
+ pindex->GetBlockPos().nFile, pindex->GetBlockPos().nPos,
DateTimeStrFormat("%x %H:%M:%S", block.GetBlockTime()).c_str(),
- FormatMoney(pindex->nMint).c_str(),
block.vtx.size());
PrintWallets(block);
//
-bool static AlreadyHave(CTxDB& txdb, const CInv& inv)
+bool static AlreadyHave(const CInv& inv)
{
switch (inv.type)
{
case MSG_TX:
{
- bool txInMap = false;
+ bool txInMap = false;
{
- LOCK(mempool.cs);
- txInMap = (mempool.exists(inv.hash));
+ LOCK(mempool.cs);
+ txInMap = mempool.exists(inv.hash);
}
- return txInMap ||
- mapOrphanTransactions.count(inv.hash) ||
- txdb.ContainsTx(inv.hash);
+ return txInMap || mapOrphanTransactions.count(inv.hash) ||
+ pcoinsTip->HaveCoins(inv.hash);
}
-
case MSG_BLOCK:
return mapBlockIndex.count(inv.hash) ||
mapOrphanBlocks.count(inv.hash);
break;
}
}
- CTxDB txdb("r");
for (unsigned int nInv = 0; nInv < vInv.size(); nInv++)
{
const CInv &inv = vInv[nInv];
return true;
pfrom->AddInventoryKnown(inv);
- bool fAlreadyHave = AlreadyHave(txdb, inv);
+ bool fAlreadyHave = AlreadyHave(inv);
if (fDebug)
printf(" got inventory: %s %s\n", inv.ToString().c_str(), fAlreadyHave ? "have" : "new");
vector<uint256> vWorkQueue;
vector<uint256> vEraseQueue;
CDataStream vMsg(vRecv);
- CTxDB txdb("r");
CTransaction tx;
vRecv >> tx;
pfrom->AddInventoryKnown(inv);
bool fMissingInputs = false;
- if (tx.AcceptToMemoryPool(txdb, true, &fMissingInputs))
+ if (tx.AcceptToMemoryPool(true, &fMissingInputs))
{
SyncWithWallets(tx, NULL, true);
RelayTransaction(tx, inv.hash);
CTransaction& orphanTx = mapOrphanTransactions[orphanTxHash];
bool fMissingInputs2 = false;
- if (orphanTx.AcceptToMemoryPool(txdb, true, &fMissingInputs2))
+ if (orphanTx.AcceptToMemoryPool(true, &fMissingInputs2))
{
printf(" accepted orphan tx %s\n", orphanTxHash.ToString().substr(0,10).c_str());
SyncWithWallets(tx, NULL, true);
//
vector<CInv> vGetData;
int64 nNow = GetTime() * 1000000;
- CTxDB txdb("r");
while (!pto->mapAskFor.empty() && (*pto->mapAskFor.begin()).first <= nNow)
{
const CInv& inv = (*pto->mapAskFor.begin()).second;
- if (!AlreadyHave(txdb, inv))
+ if (!AlreadyHave(inv))
{
if (fDebugNet)
printf("sending getdata: %s\n", inv.ToString().c_str());
}
return true;
}
+
+// Amount compression:
+// * If the amount is 0, output 0
+// * first, divide the amount (in base units) by the largest power of 10 possible; call the exponent e (e is max 9)
+// * if e<9, the last digit of the resulting number cannot be 0; store it as d, and drop it (divide by 10)
+// * call the result n
+// * output 1 + 10*(9*n + d - 1) + e
+// * if e==9, we only know the resulting number is not zero, so output 1 + 10*(n - 1) + 9
+// (this is decodable, as d is in [1-9] and e is in [0-9])
+
+uint64 CTxOutCompressor::CompressAmount(uint64 n)
+{
+ if (n == 0)
+ return 0;
+ int e = 0;
+ while (((n % 10) == 0) && e < 9) {
+ n /= 10;
+ e++;
+ }
+ if (e < 9) {
+ int d = (n % 10);
+ assert(d >= 1 && d <= 9);
+ n /= 10;
+ return 1 + (n*9 + d - 1)*10 + e;
+ } else {
+ return 1 + (n - 1)*10 + 9;
+ }
+}
+
+uint64 CTxOutCompressor::DecompressAmount(uint64 x)
+{
+ // x = 0 OR x = 1+10*(9*n + d - 1) + e OR x = 1+10*(n - 1) + 9
+ if (x == 0)
+ return 0;
+ x--;
+ // x = 10*(9*n + d - 1) + e
+ int e = x % 10;
+ x /= 10;
+ uint64 n = 0;
+ if (e < 9) {
+ // x = 9*n + d - 1
+ int d = (x % 9) + 1;
+ x /= 9;
+ // x = n
+ n = x*10 + d;
+ } else {
+ n = x+1;
+ }
+ while (e) {
+ n *= 10;
+ e--;
+ }
+ return n;
+}
git://git.novaco.in / novacoin.git / blobdiff