// Copyright (c) 2009-2012 The Bitcoin developers
-// Copyright (c) 2011-2013 The PPCoin developers
-// Copyright (c) 2013 NovaCoin Developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <boost/assign/list_of.hpp> // for 'map_list_of()'
#include <boost/foreach.hpp>
+#include <algorithm>
#include "checkpoints.h"
-#include "db.h"
+#include "txdb.h"
#include "main.h"
#include "uint256.h"
namespace Checkpoints
{
- typedef std::map<int, uint256> MapCheckpoints; // hardened checkpoints
+ typedef std::map<int, std::pair<uint256, unsigned int> > MapCheckpoints;
+ typedef std::list<uint256> ListBannedBlocks;
//
// What makes a good checkpoint block?
//
static MapCheckpoints mapCheckpoints =
boost::assign::map_list_of
- ( 0, hashGenesisBlockOfficial )
- ( 6000, uint256("0x000000000945e3c9d8e15df834e802521eb79f9ceb4191a27bdfadad4b777f4a"))
- ( 8700, uint256("0x00000000014270724837789c9a69859290f6bdee38556bc4561c21f17935a178"))
+ ( 0, std::make_pair(hashGenesisBlock, 1360105017) )
+ ( 13560, std::make_pair(uint256("0xa1591a0fcbf11f282d671581edb9f0aadcd06fee69761081e0a3245914c13729"), 1364674052) )
+ ( 143990, std::make_pair(uint256("0x00000000001ff5c3940a9f73ad4a990f64955179bde0f743c76dbf0031429efc"), 1418953493) )
+ ( 149000, std::make_pair(uint256("0x7a24acfcadcf43054e7f7d9f273522c0dfc5791ba4006e0273e7521a8d36c525"), 1420872125) )
+ ( 160000, std::make_pair(uint256("0x000000000001cb1133043d38d077c0e93f66c8b2566779f10f182137d1e34a68"), 1425150237) )
+ ( 200000, std::make_pair(uint256("0x0000000000029f8bbf66e6ea6f3e5db55009404aae0fe395a53dd33142b2bff2"), 1441127233) )
+ ( 221047, std::make_pair(uint256("0xa28aef712e7aa0c285bfe29351ca21ed416689139e3063ef770fc826a8b9e9da"), 1449431646) )
+ ( 243100, std::make_pair(uint256("0x000000000006522d1ebc0734cb0e6b83f5d4da0c3cbc72bd91b82016f611c4f0"), 1458215793) )
+ ;
+
+ static ListBannedBlocks listBanned =
+ boost::assign::list_of
+ // Invalid block #221047 with future timestamp of 2016/02/23 09:24:17 UTC
+ ( uint256("0x46223e5432ceffe650d5729b4bb8479dcdf0ca1e534fa8e69382dc87b42ea94b") )
+ ;
+
+ // TestNet has no checkpoints
+ static MapCheckpoints mapCheckpointsTestnet =
+ boost::assign::map_list_of
+ ( 0, std::make_pair(hashGenesisBlockTestNet, 1360105017) )
;
bool CheckHardened(int nHeight, const uint256& hash)
{
- if (fTestNet) return true; // Testnet has no checkpoints
+ MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
- MapCheckpoints::const_iterator i = mapCheckpoints.find(nHeight);
- if (i == mapCheckpoints.end()) return true;
- return hash == i->second;
+ MapCheckpoints::const_iterator i = checkpoints.find(nHeight);
+ if (i == checkpoints.end()) return true;
+ return hash == i->second.first;
+ }
+
+ bool CheckBanned(const uint256 &nHash)
+ {
+ if (fTestNet) // Testnet has no banned blocks
+ return true;
+ ListBannedBlocks::const_iterator it = std::find(listBanned.begin(), listBanned.end(), nHash);
+ return it == listBanned.end();
}
int GetTotalBlocksEstimate()
{
- if (fTestNet) return 0;
+ MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
+
+ return checkpoints.rbegin()->first;
+ }
+
+ unsigned int GetLastCheckpointTime()
+ {
+ MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
- return mapCheckpoints.rbegin()->first;
+ return checkpoints.rbegin()->second.second;
}
CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex)
{
- if (fTestNet) {
- std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hashGenesisBlock);
- if (t != mapBlockIndex.end())
- return t->second;
- return NULL;
- }
+ MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
- BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
+ BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, checkpoints)
{
- const uint256& hash = i.second;
+ const uint256& hash = i.second.first;
std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hash);
if (t != mapBlockIndex.end())
return t->second;
// that current checkpoint should be a descendant block
CBlockIndex* pindex = pindexSyncCheckpoint;
while (pindex->nHeight > pindexCheckpointRecv->nHeight)
- if (!(pindex = pindex->pprev))
- return error("ValidateSyncCheckpoint: pprev1 null - block index structure failure");
+ if ((pindex = pindex->pprev) == NULL)
+ return error("ValidateSyncCheckpoint: pprev null - block index structure failure");
if (pindex->GetBlockHash() != hashCheckpoint)
{
hashInvalidCheckpoint = hashCheckpoint;
// to verify.
CBlockIndex* pindex = pindexCheckpointRecv;
while (pindex->nHeight > pindexSyncCheckpoint->nHeight)
- if (!(pindex = pindex->pprev))
+ if ((pindex = pindex->pprev) == NULL)
return error("ValidateSyncCheckpoint: pprev2 null - block index structure failure");
if (pindex->GetBlockHash() != hashSyncCheckpoint)
{
}
if (!txdb.TxnCommit())
return error("WriteSyncCheckpoint(): failed to commit to db sync checkpoint %s", hashCheckpoint.ToString().c_str());
+
+#ifndef USE_LEVELDB
txdb.Close();
+#endif
Checkpoints::hashSyncCheckpoint = hashCheckpoint;
return true;
return error("AcceptPendingSyncCheckpoint: SetBestChain failed for sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
}
}
- txdb.Close();
+#ifndef USE_LEVELDB
+ txdb.Close();
+#endif
if (!WriteSyncCheckpoint(hashPendingCheckpoint))
return error("AcceptPendingSyncCheckpoint(): failed to write sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
hashPendingCheckpoint = 0;
// relay the checkpoint
if (!checkpointMessage.IsNull())
{
- BOOST_FOREACH(CNode* pnode, vNodes)
- checkpointMessage.RelayTo(pnode);
+ for (std::vector<CNode*>::iterator it = vNodes.begin(); it != vNodes.end(); ++it)
+ checkpointMessage.RelayTo(*it);
}
return true;
}
// Automatically select a suitable sync-checkpoint
uint256 AutoSelectSyncCheckpoint()
{
- // Proof-of-work blocks are immediately checkpointed
- // to defend against 51% attack which rejects other miners block
-
- // Select the last proof-of-work block
- const CBlockIndex *pindex = GetLastBlockIndex(pindexBest, false);
- // Search forward for a block within max span and maturity window
- while (pindex->pnext && (pindex->GetBlockTime() + CHECKPOINT_MAX_SPAN <= pindexBest->GetBlockTime() || pindex->nHeight + std::min(6, nCoinbaseMaturity - 20) <= pindexBest->nHeight))
- pindex = pindex->pnext;
+ const CBlockIndex *pindex = pindexBest;
+ // Search backward for a block within max span and maturity window
+ while (pindex->pprev && (pindex->GetBlockTime() + CHECKPOINT_MAX_SPAN > pindexBest->GetBlockTime() || pindex->nHeight + 8 > pindexBest->nHeight))
+ pindex = pindex->pprev;
return pindex->GetBlockHash();
}
// trace back to same height as sync-checkpoint
const CBlockIndex* pindex = pindexPrev;
while (pindex->nHeight > pindexSync->nHeight)
- if (!(pindex = pindex->pprev))
+ if ((pindex = pindex->pprev) == NULL)
return error("CheckSync: pprev null - block index structure failure");
if (pindex->nHeight < pindexSync->nHeight || pindex->GetBlockHash() != hashSyncCheckpoint)
return false; // only descendant of sync-checkpoint can pass check
bool ResetSyncCheckpoint()
{
LOCK(cs_hashSyncCheckpoint);
- const uint256& hash = mapCheckpoints.rbegin()->second;
+ const uint256& hash = mapCheckpoints.rbegin()->second.first;
if (mapBlockIndex.count(hash) && !mapBlockIndex[hash]->IsInMainChain())
{
// checkpoint block accepted but not yet in main chain
{
return error("ResetSyncCheckpoint: SetBestChain failed for hardened checkpoint %s", hash.ToString().c_str());
}
+
+#ifndef USE_LEVELDB
txdb.Close();
+#endif
+
}
else if(!mapBlockIndex.count(hash))
{
BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
{
- const uint256& hash = i.second;
+ const uint256& hash = i.second.first;
if (mapBlockIndex.count(hash) && mapBlockIndex[hash]->IsInMainChain())
{
if (!WriteSyncCheckpoint(hash))
{
// Test signing a sync-checkpoint with genesis block
CSyncCheckpoint checkpoint;
- checkpoint.hashCheckpoint = hashGenesisBlock;
+ checkpoint.hashCheckpoint = !fTestNet ? hashGenesisBlock : hashGenesisBlockTestNet;
CDataStream sMsg(SER_NETWORK, PROTOCOL_VERSION);
sMsg << (CUnsignedSyncCheckpoint)checkpoint;
checkpoint.vchMsg = std::vector<unsigned char>(sMsg.begin(), sMsg.end());
// Relay checkpoint
{
LOCK(cs_vNodes);
- BOOST_FOREACH(CNode* pnode, vNodes)
- checkpoint.RelayTo(pnode);
+ for (std::vector<CNode*>::iterator it = vNodes.begin(); it != vNodes.end(); ++it)
+ checkpoint.RelayTo(*it);
}
return true;
}
return (nBestHeight >= pindexSync->nHeight + nCoinbaseMaturity ||
pindexSync->GetBlockTime() + nStakeMinAge < GetAdjustedTime());
}
-
- // Is the sync-checkpoint too old?
- bool IsSyncCheckpointTooOld(unsigned int nSeconds)
- {
- LOCK(cs_hashSyncCheckpoint);
- // sync-checkpoint should always be accepted block
- assert(mapBlockIndex.count(hashSyncCheckpoint));
- const CBlockIndex* pindexSync = mapBlockIndex[hashSyncCheckpoint];
- return (pindexSync->GetBlockTime() + nSeconds < GetAdjustedTime());
- }
}
// ppcoin: sync-checkpoint master key
// ppcoin: verify signature of sync-checkpoint message
bool CSyncCheckpoint::CheckSignature()
{
- CKey key;
- if (!key.SetPubKey(ParseHex(CSyncCheckpoint::strMasterPubKey)))
- return error("CSyncCheckpoint::CheckSignature() : SetPubKey failed");
+ CPubKey key(ParseHex(CSyncCheckpoint::strMasterPubKey));
if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
return error("CSyncCheckpoint::CheckSignature() : verify signature failed");
return true;
}
-// ppcoin: process synchronized checkpoint
+// process synchronized checkpoint
bool CSyncCheckpoint::ProcessSyncCheckpoint(CNode* pfrom)
{
if (!CheckSignature())
return error("ProcessSyncCheckpoint: SetBestChain failed for sync checkpoint %s", hashCheckpoint.ToString().c_str());
}
}
+
+#ifndef USE_LEVELDB
txdb.Close();
+#endif
if (!Checkpoints::WriteSyncCheckpoint(hashCheckpoint))
return error("ProcessSyncCheckpoint(): failed to write sync checkpoint %s", hashCheckpoint.ToString().c_str());
git://git.novaco.in / novacoin.git / blobdiff