// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_CHECKPOINT_H
#define BITCOIN_CHECKPOINT_H
#include <map>
#include "util.h"
+#include "net.h"
+
+// max 1 hour before latest block
+static const int64_t CHECKPOINT_MAX_SPAN = nOneHour;
class uint256;
class CBlockIndex;
+class CSyncCheckpoint;
-/** Block-chain checkpoints are compiled-in sanity checks.
- * They are updated every release or three.
- */
+// Block-chain checkpoints are compiled-in sanity checks.
+// They are updated every release or three.
namespace Checkpoints
{
+ // Checkpointing mode
+ enum CPMode
+ {
+ // Scrict checkpoints policy, perform conflicts verification and resolve conflicts
+ CP_STRICT = 0,
+ // Advisory checkpoints policy, perform conflicts verification but don't try to resolve them
+ CP_ADVISORY = 1,
+ // Permissive checkpoints policy, don't perform any checking
+ CP_PERMISSIVE = 2
+ };
+
// Returns true if block passes checkpoint checks
- bool CheckBlock(int nHeight, const uint256& hash);
+ bool CheckHardened(int nHeight, const uint256& hash);
+
+ // Returns true if block passes banlist checks
+ bool CheckBanned(const uint256 &nHash);
// Return conservative estimate of total number of blocks, 0 if unknown
int GetTotalBlocksEstimate();
// Returns last CBlockIndex* in mapBlockIndex that is a checkpoint
CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex);
+
+ // Returns last checkpoint timestamp
+ unsigned int GetLastCheckpointTime();
+
+ extern uint256 hashSyncCheckpoint;
+ extern CSyncCheckpoint checkpointMessage;
+ extern uint256 hashInvalidCheckpoint;
+ extern CCriticalSection cs_hashSyncCheckpoint;
+
+ CBlockIndex* GetLastSyncCheckpoint();
+ bool WriteSyncCheckpoint(const uint256& hashCheckpoint);
+ bool AcceptPendingSyncCheckpoint();
+ uint256 AutoSelectSyncCheckpoint();
+ bool CheckSync(const uint256& hashBlock, const CBlockIndex* pindexPrev);
+ bool WantedByPendingSyncCheckpoint(const uint256 &hashBlock);
+ bool ResetSyncCheckpoint();
+ void AskForPendingSyncCheckpoint(CNode* pfrom);
+ bool SetCheckpointPrivKey(const std::string &strPrivKey);
+ bool SendSyncCheckpoint(const uint256 &hashCheckpoint);
+ bool IsMatureSyncCheckpoint();
}
+// ppcoin: synchronized checkpoint
+class CUnsignedSyncCheckpoint
+{
+public:
+ int32_t nVersion;
+ uint256 hashCheckpoint; // checkpoint block
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(this->nVersion);
+ nVersion = this->nVersion;
+ READWRITE(hashCheckpoint);
+ )
+
+ void SetNull();
+ std::string ToString() const;
+};
+
+class CSyncCheckpoint : public CUnsignedSyncCheckpoint
+{
+public:
+ static const std::string strMasterPubKey;
+ static std::string strMasterPrivKey;
+
+ std::vector<unsigned char> vchMsg;
+ std::vector<unsigned char> vchSig;
+
+ CSyncCheckpoint();
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(vchMsg);
+ READWRITE(vchSig);
+ )
+
+ void SetNull();
+ bool IsNull() const;
+ uint256 GetHash() const;
+ bool RelayTo(CNode* pnode) const;
+ bool CheckSignature();
+ bool ProcessSyncCheckpoint(CNode* pfrom);
+};
+
#endif