bool AcceptPendingSyncCheckpoint()
{
LOCK(cs_hashSyncCheckpoint);
if (hashPendingCheckpoint != 0 && mapBlockIndex.count(hashPendingCheckpoint))
{
if (!ValidateSyncCheckpoint(hashPendingCheckpoint))
{
hashPendingCheckpoint = 0;
checkpointMessagePending.SetNull();
return false;
}
CTxDB txdb;
CBlockIndex* pindexCheckpoint = mapBlockIndex[hashPendingCheckpoint];
if (!pindexCheckpoint->IsInMainChain())
{
CBlock block;
if (!block.ReadFromDisk(pindexCheckpoint))
return error("AcceptPendingSyncCheckpoint: ReadFromDisk failed for sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
if (!block.SetBestChain(txdb, pindexCheckpoint))
{
hashInvalidCheckpoint = hashPendingCheckpoint;
return error("AcceptPendingSyncCheckpoint: SetBestChain failed for sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
}
}
if (!WriteSyncCheckpoint(hashPendingCheckpoint))
return error("AcceptPendingSyncCheckpoint(): failed to write sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
hashPendingCheckpoint = 0;
checkpointMessage = checkpointMessagePending;
checkpointMessagePending.SetNull();
printf("AcceptPendingSyncCheckpoint : sync-checkpoint at %s\n", hashSyncCheckpoint.ToString().c_str());
// relay the checkpoint
if (!checkpointMessage.IsNull())
{
BOOST_FOREACH(CNode* pnode, vNodes)
checkpointMessage.RelayTo(pnode);
}
return true;
}
return false;
}
// ThirdGenerationCoin: reset synchronized checkpoint to last hardened checkpoint
bool ResetSyncCheckpoint()
{
LOCK(cs_hashSyncCheckpoint);
const uint256& hash = mapCheckpoints.rbegin()->second;
if(mapBlockIndex.count(hash) && !mapBlockIndex[hash]->IsInMainChain())
{
// checkpoint block accepted but not yet in main chain
printf("ResetSyncCheckpoint: SetBestChain to hardened checkpoint %s\n", hash.ToString().c_str());
CTxDB txdb;
CBlock block;
if(!block.ReadFromDisk(mapBlockIndex[hash]))
return error("ResetSyncCheckpoint: ReadFromDisk failed for hardened checkpoint %s",
hash.ToString().c_str());
if(!block.SetBestChain(txdb, mapBlockIndex[hash]))
{
return error("ResetSyncCheckpoint: SetBestChain failed for hardened checkpoint %s",
hash.ToString().c_str());
}
txdb.Close();
}
else if(!mapBlockIndex.count(hash))
{
// checkpoint block not yet accepted
hashPendingCheckpoint = hash;
checkpointMessagePending.SetNull();
printf("ResetSyncCheckpoint: pending for sync-checkpoint %s\n", hashPendingCheckpoint.ToString().c_str());
}
BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, mapCheckpoints)
{
const uint256& hash = i.second;
if(mapBlockIndex.count(hash) && mapBlockIndex[hash]->IsInMainChain())
{
if(!WriteSyncCheckpoint(hash))
return error("ResetSyncCheckpoint: failed to write sync checkpoint %s", hash.ToString().c_str());
printf("ResetSyncCheckpoint: sync-checkpoint reset to %s\n", hashSyncCheckpoint.ToString().c_str());
return true;
}
}
return false;
}
