diff options
Diffstat (limited to 'src/main.cpp')
| -rw-r--r-- | src/main.cpp | 179 |
1 files changed, 96 insertions, 83 deletions
diff --git a/src/main.cpp b/src/main.cpp index 91aba149b..fbaf05dfc 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -3,6 +3,7 @@ // Distributed under the MIT/X11 software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. +#include "alert.h" #include "checkpoints.h" #include "db.h" #include "net.h" @@ -281,9 +282,12 @@ bool CTransaction::IsStandard() const if (!txin.scriptSig.IsPushOnly()) return false; } - BOOST_FOREACH(const CTxOut& txout, vout) + BOOST_FOREACH(const CTxOut& txout, vout) { if (!::IsStandard(txout.scriptPubKey)) return false; + if (txout.nValue == 0) + return false; + } return true; } @@ -473,6 +477,55 @@ bool CTransaction::CheckTransaction() const return true; } +int64 CTransaction::GetMinFee(unsigned int nBlockSize, bool fAllowFree, + enum GetMinFee_mode mode) const +{ + // Base fee is either MIN_TX_FEE or MIN_RELAY_TX_FEE + int64 nBaseFee = (mode == GMF_RELAY) ? MIN_RELAY_TX_FEE : MIN_TX_FEE; + + unsigned int nBytes = ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION); + unsigned int nNewBlockSize = nBlockSize + nBytes; + int64 nMinFee = (1 + (int64)nBytes / 1000) * nBaseFee; + + if (fAllowFree) + { + if (nBlockSize == 1) + { + // Transactions under 10K are free + // (about 4500 BTC if made of 50 BTC inputs) + if (nBytes < 10000) + nMinFee = 0; + } + else + { + // Free transaction area + if (nNewBlockSize < 27000) + nMinFee = 0; + } + } + + // To limit dust spam, require MIN_TX_FEE/MIN_RELAY_TX_FEE if any output is less than 0.01 + if (nMinFee < nBaseFee) + { + BOOST_FOREACH(const CTxOut& txout, vout) + if (txout.nValue < CENT) + nMinFee = nBaseFee; + } + + // Raise the price as the block approaches full + if (nBlockSize != 1 && nNewBlockSize >= MAX_BLOCK_SIZE_GEN/2) + { + if (nNewBlockSize >= MAX_BLOCK_SIZE_GEN) + return MAX_MONEY; + nMinFee *= MAX_BLOCK_SIZE_GEN / (MAX_BLOCK_SIZE_GEN - nNewBlockSize); + } + + if (!MoneyRange(nMinFee)) + nMinFee = MAX_MONEY; + return nMinFee; +} + + bool CTxMemPool::accept(CTxDB& txdb, CTransaction &tx, bool fCheckInputs, bool* pfMissingInputs) { @@ -559,8 +612,11 @@ bool CTxMemPool::accept(CTxDB& txdb, CTransaction &tx, bool fCheckInputs, unsigned int nSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); // Don't accept it if it can't get into a block - if (nFees < tx.GetMinFee(1000, true, GMF_RELAY)) - return error("CTxMemPool::accept() : not enough fees"); + int64 txMinFee = tx.GetMinFee(1000, true, GMF_RELAY); + if (nFees < txMinFee) + return error("CTxMemPool::accept() : not enough fees %s, %"PRI64d" < %"PRI64d, + hash.ToString().c_str(), + nFees, txMinFee); // Continuously rate-limit free transactions // This mitigates 'penny-flooding' -- sending thousands of free transactions just to @@ -653,8 +709,7 @@ bool CTxMemPool::remove(CTransaction &tx) return true; } -void -CTxMemPool::clear() +void CTxMemPool::clear() { LOCK(cs); mapTx.clear(); @@ -1357,9 +1412,12 @@ bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex, bool fJustCheck) // See BIP30 and http://r6.ca/blog/20120206T005236Z.html for more information. // This logic is not necessary for memory pool transactions, as AcceptToMemoryPool // already refuses previously-known transaction ids entirely. - // This rule applies to all blocks whose timestamp is after March 15, 2012, 0:00 UTC. - int64 nBIP30SwitchTime = 1331769600; - bool fEnforceBIP30 = (pindex->nTime > nBIP30SwitchTime); + // This rule was originally applied all blocks whose timestamp was after March 15, 2012, 0:00 UTC. + // 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 = !((pindex->nHeight==91842 && pindex->GetBlockHash() == uint256("0x00000000000a4d0a398161ffc163c503763b1f4360639393e0e4c8e300e0caec")) || + (pindex->nHeight==91880 && pindex->GetBlockHash() == uint256("0x00000000000743f190a18c5577a3c2d2a1f610ae9601ac046a38084ccb7cd721"))); // BIP16 didn't become active until Apr 1 2012 int64 nBIP16SwitchTime = 1333238400; @@ -1989,11 +2047,17 @@ bool CheckDiskSpace(uint64 nAdditionalBytes) 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) { if ((nFile < 1) || (nFile == (unsigned int) -1)) return NULL; - FILE* file = fopen((GetDataDir() / strprintf("blk%04d.dat", nFile)).string().c_str(), pszMode); + FILE* file = fopen(BlockFilePath(nFile).string().c_str(), pszMode); if (!file) return NULL; if (nBlockPos != 0 && !strchr(pszMode, 'a') && !strchr(pszMode, 'w')) @@ -2254,8 +2318,8 @@ bool LoadExternalBlockFile(FILE* fileIn) // CAlert // -map<uint256, CAlert> mapAlerts; -CCriticalSection cs_mapAlerts; +extern map<uint256, CAlert> mapAlerts; +extern CCriticalSection cs_mapAlerts; string GetWarnings(string strFor) { @@ -2301,69 +2365,6 @@ string GetWarnings(string strFor) return "error"; } -CAlert CAlert::getAlertByHash(const uint256 &hash) -{ - CAlert retval; - { - LOCK(cs_mapAlerts); - map<uint256, CAlert>::iterator mi = mapAlerts.find(hash); - if(mi != mapAlerts.end()) - retval = mi->second; - } - return retval; -} - -bool CAlert::ProcessAlert() -{ - if (!CheckSignature()) - return false; - if (!IsInEffect()) - return false; - - { - LOCK(cs_mapAlerts); - // Cancel previous alerts - for (map<uint256, CAlert>::iterator mi = mapAlerts.begin(); mi != mapAlerts.end();) - { - const CAlert& alert = (*mi).second; - if (Cancels(alert)) - { - printf("cancelling alert %d\n", alert.nID); - uiInterface.NotifyAlertChanged((*mi).first, CT_DELETED); - mapAlerts.erase(mi++); - } - else if (!alert.IsInEffect()) - { - printf("expiring alert %d\n", alert.nID); - uiInterface.NotifyAlertChanged((*mi).first, CT_DELETED); - mapAlerts.erase(mi++); - } - else - mi++; - } - - // Check if this alert has been cancelled - BOOST_FOREACH(PAIRTYPE(const uint256, CAlert)& item, mapAlerts) - { - const CAlert& alert = item.second; - if (alert.Cancels(*this)) - { - printf("alert already cancelled by %d\n", alert.nID); - return false; - } - } - - // Add to mapAlerts - mapAlerts.insert(make_pair(GetHash(), *this)); - // Notify UI if it applies to me - if(AppliesToMe()) - uiInterface.NotifyAlertChanged(GetHash(), CT_NEW); - } - - printf("accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe()); - return true; -} - @@ -2655,7 +2656,6 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) // In case we are on a very long side-chain, it is possible that we already have // the last block in an inv bundle sent in response to getblocks. Try to detect // this situation and push another getblocks to continue. - std::vector<CInv> vGetData(1,inv); pfrom->PushGetBlocks(mapBlockIndex[inv.hash], uint256(0)); if (fDebug) printf("force request: %s\n", inv.ToString().c_str()); @@ -2995,14 +2995,27 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) CAlert alert; vRecv >> alert; - if (alert.ProcessAlert()) + uint256 alertHash = alert.GetHash(); + if (pfrom->setKnown.count(alertHash) == 0) { - // Relay - pfrom->setKnown.insert(alert.GetHash()); + if (alert.ProcessAlert()) { - LOCK(cs_vNodes); - BOOST_FOREACH(CNode* pnode, vNodes) - alert.RelayTo(pnode); + // Relay + pfrom->setKnown.insert(alertHash); + { + LOCK(cs_vNodes); + BOOST_FOREACH(CNode* pnode, vNodes) + alert.RelayTo(pnode); + } + } + else { + // Small DoS penalty so peers that send us lots of + // duplicate/expired/invalid-signature/whatever alerts + // eventually get banned. + // This isn't a Misbehaving(100) (immediate ban) because the + // peer might be an older or different implementation with + // a different signature key, etc. + pfrom->Misbehaving(10); } } } @@ -3988,8 +4001,8 @@ void GenerateBitcoins(bool fGenerate, CWallet* pwallet) printf("Starting %d BitcoinMiner threads\n", nAddThreads); for (int i = 0; i < nAddThreads; i++) { - if (!CreateThread(ThreadBitcoinMiner, pwallet)) - printf("Error: CreateThread(ThreadBitcoinMiner) failed\n"); + if (!NewThread(ThreadBitcoinMiner, pwallet)) + printf("Error: NewThread(ThreadBitcoinMiner) failed\n"); Sleep(10); } } |