TrianglesCommunityProject
627c13c0fc
Version 4.2.1.0 - wallet makeover - staking behaviour adjustments - non mandatory update- - no need for updating daemons (only recomended if used for staking)
444 lines
20 KiB
C++
444 lines
20 KiB
C++
// Copyright (c) 2009-2012 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <boost/assign/list_of.hpp> // for 'map_list_of()'
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#include <boost/foreach.hpp>
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#include "checkpoints.h"
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#include "txdb.h"
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#include "main.h"
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#include "uint256.h"
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namespace Checkpoints
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{
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typedef std::map<int, uint256> MapCheckpoints;
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//
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// What makes a good checkpoint block?
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// + Is surrounded by blocks with reasonable timestamps
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// (no blocks before with a timestamp after, none after with
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// timestamp before)
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// + Contains no strange transactions
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//
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static MapCheckpoints mapCheckpoints =
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boost::assign::map_list_of
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( 0, hashGenesisBlockOfficial )
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( 2000, uint256("0x0000000000b5f20078bf46ebdf1500813bb6b2cb482065aa93b89e073b2c6467"))
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( 2101, uint256("0xd4ea1ac45b63c8162a7fc8033cec441db8d532ba988202849d7831e32fe2d059"))
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( 2847, uint256("0xb5015e2835f13fd3bb6135cff9b31ac33310c9b77d694bdb592b8680d98d018e"))
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( 3589, uint256("0xb12a2ca3db4e288cada98aa2139768532bd4474c49dd7b8158031032dac08d51"))
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( 3935, uint256("0xe16290c9757d1368b8d7c35de07d4f8f70c2c9f9c785b667df0c3bff85086ca6"))
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( 5703, uint256("0x587db07bb2172ad7db72c5fabc2518262a1b27f503f99417510b2c6fafa6557b"))
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( 9000, uint256("0x00000000019ef6b2f5e7c324c7d083ee94502305aabc7e9cd73a7fb2a57bb8db"))
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( 9001, uint256("0x6d5c6c5f201cc9e59659ee0da30d1430dc6bf3b12a8ff4c3864ab8d6286b0007"))
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( 9002, uint256("0xa1e20fb1d44688b763690cf74d6aefe859e4cc32981f9e3f2b2ae9702bbcf249"))
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( 10881, uint256("0x4b6554c45e1e6764a6f3c309c47baf53c9edd81f624e52b072518cd15da237e6"))
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( 17650, uint256("0x224940e1f986a202209b8e762728d1452ab45870c308abf84905674acf326a47"))
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(100000, uint256("0x2f737bded65284d70cdf8992f83ecd8bd1ee00cf24e527b6763465cdd43017b1"))
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(200000, uint256("0xd94347d8c21034c0b3fe2a7a0ea9d63127a0d9ed4dd3c063c38a3b06125f38e4"))
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;
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static MapCheckpoints mapCheckpointsTestnet =
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boost::assign::map_list_of
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( 0, hashGenesisBlockTestNet )
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( 2000, uint256("0x0000000000b5f20078bf46ebdf1500813bb6b2cb482065aa93b89e073b2c6467"))
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( 2101, uint256("0xd4ea1ac45b63c8162a7fc8033cec441db8d532ba988202849d7831e32fe2d059"))
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( 2847, uint256("0xb5015e2835f13fd3bb6135cff9b31ac33310c9b77d694bdb592b8680d98d018e"))
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( 3589, uint256("0xb12a2ca3db4e288cada98aa2139768532bd4474c49dd7b8158031032dac08d51"))
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( 3935, uint256("0xe16290c9757d1368b8d7c35de07d4f8f70c2c9f9c785b667df0c3bff85086ca6"))
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( 5703, uint256("0x587db07bb2172ad7db72c5fabc2518262a1b27f503f99417510b2c6fafa6557b"))
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( 9000, uint256("0x00000000019ef6b2f5e7c324c7d083ee94502305aabc7e9cd73a7fb2a57bb8db"))
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( 9001, uint256("0x6d5c6c5f201cc9e59659ee0da30d1430dc6bf3b12a8ff4c3864ab8d6286b0007"))
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( 9002, uint256("0xa1e20fb1d44688b763690cf74d6aefe859e4cc32981f9e3f2b2ae9702bbcf249"))
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( 10881, uint256("0x4b6554c45e1e6764a6f3c309c47baf53c9edd81f624e52b072518cd15da237e6"))
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( 17650, uint256("0x224940e1f986a202209b8e762728d1452ab45870c308abf84905674acf326a47"))
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(100000, uint256("0x2f737bded65284d70cdf8992f83ecd8bd1ee00cf24e527b6763465cdd43017b1"))
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(200000, uint256("0xd94347d8c21034c0b3fe2a7a0ea9d63127a0d9ed4dd3c063c38a3b06125f38e4"))
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;
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bool CheckHardened(int nHeight, const uint256& hash)
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{
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MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
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MapCheckpoints::const_iterator i = checkpoints.find(nHeight);
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if (i == checkpoints.end()) return true;
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return hash == i->second;
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}
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int GetTotalBlocksEstimate()
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{
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MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
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return checkpoints.rbegin()->first;
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}
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CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex)
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{
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MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
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BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, checkpoints)
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{
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const uint256& hash = i.second;
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std::map<uint256, CBlockIndex*>::const_iterator t = mapBlockIndex.find(hash);
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if (t != mapBlockIndex.end())
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return t->second;
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}
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return NULL;
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}
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// triangles: synchronized checkpoint (centrally broadcasted)
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uint256 hashSyncCheckpoint = uint256("0x224940e1f986a202209b8e762728d1452ab45870c308abf84905674acf326a47");
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uint256 hashPendingCheckpoint = uint256("0x224940e1f986a202209b8e762728d1452ab45870c308abf84905674acf326a47");
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CSyncCheckpoint checkpointMessage;
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CSyncCheckpoint checkpointMessagePending;
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uint256 hashInvalidCheckpoint = 0;
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CCriticalSection cs_hashSyncCheckpoint;
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// triangles: get last synchronized checkpoint
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CBlockIndex* GetLastSyncCheckpoint()
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{
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LOCK(cs_hashSyncCheckpoint);
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if (!mapBlockIndex.count(hashSyncCheckpoint))
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error("GetSyncCheckpoint: block index missing for current sync-checkpoint %s", hashSyncCheckpoint.ToString().c_str());
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else
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return mapBlockIndex[hashSyncCheckpoint];
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return NULL;
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}
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// triangles: only descendant of current sync-checkpoint is allowed
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bool ValidateSyncCheckpoint(uint256 hashCheckpoint)
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{
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if (!mapBlockIndex.count(hashSyncCheckpoint))
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return error("ValidateSyncCheckpoint: block index missing for current sync-checkpoint %s", hashSyncCheckpoint.ToString().c_str());
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if (!mapBlockIndex.count(hashCheckpoint))
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return error("ValidateSyncCheckpoint: block index missing for received sync-checkpoint %s", hashCheckpoint.ToString().c_str());
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CBlockIndex* pindexSyncCheckpoint = mapBlockIndex[hashSyncCheckpoint];
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CBlockIndex* pindexCheckpointRecv = mapBlockIndex[hashCheckpoint];
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if (pindexCheckpointRecv->nHeight <= pindexSyncCheckpoint->nHeight)
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{
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// Received an older checkpoint, trace back from current checkpoint
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// to the same height of the received checkpoint to verify
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// that current checkpoint should be a descendant block
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CBlockIndex* pindex = pindexSyncCheckpoint;
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while (pindex->nHeight > pindexCheckpointRecv->nHeight)
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if (!(pindex = pindex->pprev))
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return error("ValidateSyncCheckpoint: pprev null - block index structure failure");
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if (pindex->GetBlockHash() != hashCheckpoint)
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{
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hashInvalidCheckpoint = hashCheckpoint;
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return error("ValidateSyncCheckpoint: new sync-checkpoint %s is conflicting with current sync-checkpoint %s", hashCheckpoint.ToString().c_str(), hashSyncCheckpoint.ToString().c_str());
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}
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return false; // ignore older checkpoint
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}
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// Received checkpoint should be a descendant block of the current
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// checkpoint. Trace back to the same height of current checkpoint
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// to verify.
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CBlockIndex* pindex = pindexCheckpointRecv;
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while (pindex->nHeight > pindexSyncCheckpoint->nHeight)
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if (!(pindex = pindex->pprev))
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return error("ValidateSyncCheckpoint: pprev2 null - block index structure failure");
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if (pindex->GetBlockHash() != hashSyncCheckpoint)
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{
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hashInvalidCheckpoint = hashCheckpoint;
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return error("ValidateSyncCheckpoint: new sync-checkpoint %s is not a descendant of current sync-checkpoint %s", hashCheckpoint.ToString().c_str(), hashSyncCheckpoint.ToString().c_str());
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}
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return true;
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}
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bool WriteSyncCheckpoint(const uint256& hashCheckpoint)
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{
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CTxDB txdb;
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txdb.TxnBegin();
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if (!txdb.WriteSyncCheckpoint(hashCheckpoint))
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{
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txdb.TxnAbort();
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return error("WriteSyncCheckpoint(): failed to write to db sync checkpoint %s", hashCheckpoint.ToString().c_str());
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}
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if (!txdb.TxnCommit())
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return error("WriteSyncCheckpoint(): failed to commit to db sync checkpoint %s", hashCheckpoint.ToString().c_str());
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Checkpoints::hashSyncCheckpoint = hashCheckpoint;
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return true;
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}
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bool AcceptPendingSyncCheckpoint()
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{
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LOCK(cs_hashSyncCheckpoint);
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if (hashPendingCheckpoint != 0 && mapBlockIndex.count(hashPendingCheckpoint))
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{
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if (!ValidateSyncCheckpoint(hashPendingCheckpoint))
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{
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hashPendingCheckpoint = 0;
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checkpointMessagePending.SetNull();
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return false;
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}
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CTxDB txdb;
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CBlockIndex* pindexCheckpoint = mapBlockIndex[hashPendingCheckpoint];
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if (!pindexCheckpoint->IsInMainChain())
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{
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CBlock block;
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if (!block.ReadFromDisk(pindexCheckpoint))
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return error("AcceptPendingSyncCheckpoint: ReadFromDisk failed for sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
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if (!block.SetBestChain(txdb, pindexCheckpoint))
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{
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hashInvalidCheckpoint = hashPendingCheckpoint;
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return error("AcceptPendingSyncCheckpoint: SetBestChain failed for sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
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}
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}
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if (!WriteSyncCheckpoint(hashPendingCheckpoint))
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return error("AcceptPendingSyncCheckpoint(): failed to write sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
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hashPendingCheckpoint = 0;
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checkpointMessage = checkpointMessagePending;
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checkpointMessagePending.SetNull();
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printf("AcceptPendingSyncCheckpoint : sync-checkpoint at %s\n", hashSyncCheckpoint.ToString().c_str());
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// relay the checkpoint
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if (!checkpointMessage.IsNull())
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{
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BOOST_FOREACH(CNode* pnode, vNodes)
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checkpointMessage.RelayTo(pnode);
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}
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return true;
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}
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return false;
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}
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// Automatically select a suitable sync-checkpoint
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uint256 AutoSelectSyncCheckpoint()
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{
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const CBlockIndex *pindex = pindexBest;
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// Search backward for a block within max span and maturity window
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while (pindex->pprev && (pindex->GetBlockTime() + CHECKPOINT_MAX_SPAN > pindexBest->GetBlockTime() || pindex->nHeight + 8 > pindexBest->nHeight))
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pindex = pindex->pprev;
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return pindex->GetBlockHash();
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}
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// Check against synchronized checkpoint
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bool CheckSync(const uint256& hashBlock, const CBlockIndex* pindexPrev)
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{
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if (fTestNet) return true; // Testnet has no checkpoints
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int nHeight = pindexPrev->nHeight + 1;
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LOCK(cs_hashSyncCheckpoint);
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// sync-checkpoint should always be accepted block
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assert(mapBlockIndex.count(hashSyncCheckpoint));
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const CBlockIndex* pindexSync = mapBlockIndex[hashSyncCheckpoint];
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if (nHeight > pindexSync->nHeight)
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{
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// trace back to same height as sync-checkpoint
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const CBlockIndex* pindex = pindexPrev;
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while (pindex->nHeight > pindexSync->nHeight)
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if (!(pindex = pindex->pprev))
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return error("CheckSync: pprev null - block index structure failure");
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if (pindex->nHeight < pindexSync->nHeight || pindex->GetBlockHash() != hashSyncCheckpoint)
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return false; // only descendant of sync-checkpoint can pass check
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}
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if (nHeight == pindexSync->nHeight && hashBlock != hashSyncCheckpoint)
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return false; // same height with sync-checkpoint
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if (nHeight < pindexSync->nHeight && !mapBlockIndex.count(hashBlock))
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return false; // lower height than sync-checkpoint
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return true;
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}
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bool WantedByPendingSyncCheckpoint(uint256 hashBlock)
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{
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LOCK(cs_hashSyncCheckpoint);
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if (hashPendingCheckpoint == 0)
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return false;
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if (hashBlock == hashPendingCheckpoint)
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return true;
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if (mapOrphanBlocks.count(hashPendingCheckpoint)
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&& hashBlock == WantedByOrphan(mapOrphanBlocks[hashPendingCheckpoint]))
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return true;
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return false;
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}
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// triangles: reset synchronized checkpoint to last hardened checkpoint
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bool ResetSyncCheckpoint()
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{
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LOCK(cs_hashSyncCheckpoint);
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const uint256& hash = mapCheckpoints.rbegin()->second;
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if (mapBlockIndex.count(hash) && !mapBlockIndex[hash]->IsInMainChain())
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{
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// checkpoint block accepted but not yet in main chain
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printf("ResetSyncCheckpoint: SetBestChain to hardened checkpoint %s\n", hash.ToString().c_str());
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CTxDB txdb;
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CBlock block;
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if (!block.ReadFromDisk(mapBlockIndex[hash]))
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return error("ResetSyncCheckpoint: ReadFromDisk failed for hardened checkpoint %s", hash.ToString().c_str());
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if (!block.SetBestChain(txdb, mapBlockIndex[hash]))
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{
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return error("ResetSyncCheckpoint: SetBestChain failed for hardened checkpoint %s", hash.ToString().c_str());
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}
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}
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else if(!mapBlockIndex.count(hash))
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{
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// checkpoint block not yet accepted
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hashPendingCheckpoint = hash;
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checkpointMessagePending.SetNull();
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printf("ResetSyncCheckpoint: pending for sync-checkpoint %s\n", hashPendingCheckpoint.ToString().c_str());
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}
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BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
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{
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const uint256& hash = i.second;
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if (mapBlockIndex.count(hash) && mapBlockIndex[hash]->IsInMainChain())
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{
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if (!WriteSyncCheckpoint(hash))
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return error("ResetSyncCheckpoint: failed to write sync checkpoint %s", hash.ToString().c_str());
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printf("ResetSyncCheckpoint: sync-checkpoint reset to %s\n", hashSyncCheckpoint.ToString().c_str());
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return true;
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}
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}
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return false;
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}
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void AskForPendingSyncCheckpoint(CNode* pfrom)
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{
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LOCK(cs_hashSyncCheckpoint);
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if (pfrom && hashPendingCheckpoint != 0 && (!mapBlockIndex.count(hashPendingCheckpoint)) && (!mapOrphanBlocks.count(hashPendingCheckpoint)))
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pfrom->AskFor(CInv(MSG_BLOCK, hashPendingCheckpoint));
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}
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bool SetCheckpointPrivKey(std::string strPrivKey)
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{
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// Test signing a sync-checkpoint with genesis block
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CSyncCheckpoint checkpoint;
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checkpoint.hashCheckpoint = !fTestNet ? hashGenesisBlockOfficial : hashGenesisBlockTestNet;
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CDataStream sMsg(SER_NETWORK, PROTOCOL_VERSION);
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sMsg << (CUnsignedSyncCheckpoint)checkpoint;
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checkpoint.vchMsg = std::vector<unsigned char>(sMsg.begin(), sMsg.end());
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std::vector<unsigned char> vchPrivKey = ParseHex(strPrivKey);
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CKey key;
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key.SetPrivKey(CPrivKey(vchPrivKey.begin(), vchPrivKey.end())); // if key is not correct openssl may crash
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if (!key.Sign(Hash(checkpoint.vchMsg.begin(), checkpoint.vchMsg.end()), checkpoint.vchSig))
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return false;
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// Test signing successful, proceed
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CSyncCheckpoint::strMasterPrivKey = strPrivKey;
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return true;
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}
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bool SendSyncCheckpoint(uint256 hashCheckpoint)
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{
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CSyncCheckpoint checkpoint;
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checkpoint.hashCheckpoint = hashCheckpoint;
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CDataStream sMsg(SER_NETWORK, PROTOCOL_VERSION);
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sMsg << (CUnsignedSyncCheckpoint)checkpoint;
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checkpoint.vchMsg = std::vector<unsigned char>(sMsg.begin(), sMsg.end());
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if (CSyncCheckpoint::strMasterPrivKey.empty())
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return error("SendSyncCheckpoint: Checkpoint master key unavailable.");
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std::vector<unsigned char> vchPrivKey = ParseHex(CSyncCheckpoint::strMasterPrivKey);
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CKey key;
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key.SetPrivKey(CPrivKey(vchPrivKey.begin(), vchPrivKey.end())); // if key is not correct openssl may crash
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if (!key.Sign(Hash(checkpoint.vchMsg.begin(), checkpoint.vchMsg.end()), checkpoint.vchSig))
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return error("SendSyncCheckpoint: Unable to sign checkpoint, check private key?");
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if(!checkpoint.ProcessSyncCheckpoint(NULL))
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{
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printf("WARNING: SendSyncCheckpoint: Failed to process checkpoint.\n");
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return false;
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}
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// Relay checkpoint
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{
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LOCK(cs_vNodes);
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BOOST_FOREACH(CNode* pnode, vNodes)
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checkpoint.RelayTo(pnode);
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}
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return true;
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}
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// Is the sync-checkpoint outside maturity window?
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bool IsMatureSyncCheckpoint()
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{
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LOCK(cs_hashSyncCheckpoint);
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// sync-checkpoint should always be accepted block
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assert(mapBlockIndex.count(hashSyncCheckpoint));
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const CBlockIndex* pindexSync = mapBlockIndex[hashSyncCheckpoint];
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return (nBestHeight >= pindexSync->nHeight + nCoinbaseMaturity ||
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pindexSync->GetBlockTime() + nStakeMinAge < GetAdjustedTime());
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}
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}
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// triangles: sync-checkpoint master key
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const std::string CSyncCheckpoint::strMasterPubKey = "404330cf0c0e76bb8591011dcb61ad4f28c48940a09db1f3588e35827c89c09aa68b432b54018c4b1f653c2dbe0d3507b6b3939af8e97fdbee543dee3fd64bf590";
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std::string CSyncCheckpoint::strMasterPrivKey = "";
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// triangles: verify signature of sync-checkpoint message
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bool CSyncCheckpoint::CheckSignature()
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{
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CKey key;
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if (!key.SetPubKey(ParseHex(CSyncCheckpoint::strMasterPubKey)))
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return error("CSyncCheckpoint::CheckSignature() : SetPubKey failed");
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if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
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return error("CSyncCheckpoint::CheckSignature() : verify signature failed");
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// Now unserialize the data
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CDataStream sMsg(vchMsg, SER_NETWORK, PROTOCOL_VERSION);
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sMsg >> *(CUnsignedSyncCheckpoint*)this;
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return true;
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}
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// triangles: process synchronized checkpoint
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bool CSyncCheckpoint::ProcessSyncCheckpoint(CNode* pfrom)
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{
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if (!CheckSignature())
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return false;
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LOCK(Checkpoints::cs_hashSyncCheckpoint);
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if (!mapBlockIndex.count(hashCheckpoint))
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{
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// We haven't received the checkpoint chain, keep the checkpoint as pending
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Checkpoints::hashPendingCheckpoint = hashCheckpoint;
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Checkpoints::checkpointMessagePending = *this;
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printf("ProcessSyncCheckpoint: pending for sync-checkpoint %s\n", hashCheckpoint.ToString().c_str());
|
|
// Ask this guy to fill in what we're missing
|
|
if (pfrom)
|
|
{
|
|
pfrom->PushGetBlocks(pindexBest, hashCheckpoint);
|
|
// ask directly as well in case rejected earlier by duplicate
|
|
// proof-of-stake because getblocks may not get it this time
|
|
pfrom->AskFor(CInv(MSG_BLOCK, mapOrphanBlocks.count(hashCheckpoint)? WantedByOrphan(mapOrphanBlocks[hashCheckpoint]) : hashCheckpoint));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (!Checkpoints::ValidateSyncCheckpoint(hashCheckpoint))
|
|
return false;
|
|
|
|
CTxDB txdb;
|
|
CBlockIndex* pindexCheckpoint = mapBlockIndex[hashCheckpoint];
|
|
if (!pindexCheckpoint->IsInMainChain())
|
|
{
|
|
// checkpoint chain received but not yet main chain
|
|
CBlock block;
|
|
if (!block.ReadFromDisk(pindexCheckpoint))
|
|
return error("ProcessSyncCheckpoint: ReadFromDisk failed for sync checkpoint %s", hashCheckpoint.ToString().c_str());
|
|
if (!block.SetBestChain(txdb, pindexCheckpoint))
|
|
{
|
|
Checkpoints::hashInvalidCheckpoint = hashCheckpoint;
|
|
return error("ProcessSyncCheckpoint: SetBestChain failed for sync checkpoint %s", hashCheckpoint.ToString().c_str());
|
|
}
|
|
}
|
|
|
|
if (!Checkpoints::WriteSyncCheckpoint(hashCheckpoint))
|
|
return error("ProcessSyncCheckpoint(): failed to write sync checkpoint %s", hashCheckpoint.ToString().c_str());
|
|
Checkpoints::checkpointMessage = *this;
|
|
Checkpoints::hashPendingCheckpoint = 0;
|
|
Checkpoints::checkpointMessagePending.SetNull();
|
|
printf("ProcessSyncCheckpoint: sync-checkpoint at %s\n", hashCheckpoint.ToString().c_str());
|
|
return true;
|
|
}
|