-// Copyright (c) 2011 The Bitcoin developers
-// Copyright (c) 2011-2012 The PPCoin developers
+// 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 "serialize.h"
+#include "sync.h"
+#include "uint256.h"
+
+#include <map>
-// ppcoin: auto checkpoint min at 8 hours; max at 16 hours
-#define AUTO_CHECKPOINT_MIN_SPAN (60 * 60 * 8)
-#define AUTO_CHECKPOINT_MAX_SPAN (60 * 60 * 16)
-#define AUTO_CHECKPOINT_TRUST_SPAN (60 * 60 * 24)
+// max 1 hour before latest block
+static const int64_t CHECKPOINT_MAX_SPAN = nOneHour;
+
+#ifdef WIN32
+#undef STRICT
+#undef PERMISSIVE
+#undef ADVISORY
+#endif
-class uint256;
class CBlockIndex;
+class CSyncCheckpoint;
+class CNode;
+
+/** 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
+ STRICT = 0,
+ // Advisory checkpoints policy, perform conflicts verification but don't try to resolve them
+ ADVISORY = 1,
+ // Permissive checkpoints policy, don't perform any checking
+ PERMISSIVE = 2
+ };
+
+ // Returns true if block passes checkpoint checks
+ 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(uint256 hashBlock);
+ bool ResetSyncCheckpoint();
+ void AskForPendingSyncCheckpoint(CNode* pfrom);
+ bool SetCheckpointPrivKey(std::string strPrivKey);
+ bool SendSyncCheckpoint(uint256 hashCheckpoint);
+ bool IsMatureSyncCheckpoint();
+}
// ppcoin: synchronized checkpoint
class CUnsignedSyncCheckpoint
nVersion,
hashCheckpoint.ToString().c_str());
}
-
- void print() const
- {
- printf("%s", ToString().c_str());
- }
};
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()
- {
- SetNull();
- }
+ CSyncCheckpoint();
IMPLEMENT_SERIALIZE
(
READWRITE(vchSig);
)
- void SetNull()
- {
- CUnsignedSyncCheckpoint::SetNull();
- vchMsg.clear();
- vchSig.clear();
- }
-
- bool IsNull() const
- {
- return (hashCheckpoint == 0);
- }
-
- uint256 GetHash() const
- {
- return SerializeHash(*this);
- }
-
- bool RelayTo(CNode* pnode) const
- {
- // returns true if wasn't already sent
- if (pnode->hashCheckpointKnown != hashCheckpoint)
- {
- pnode->hashCheckpointKnown = hashCheckpoint;
- pnode->PushMessage("checkpoint", *this);
- return true;
- }
- return false;
- }
-
- bool CheckSignature()
- {
- CKey key;
- if (!key.SetPubKey(ParseHex("04ea21daea8c15559870b5e93750ddc2f0c16bd0cb16636ba88c0746cfac07912ec7ad14111cc4aedda12c2687c920c7b7b62fd67ca14eed53f2d1704ec72362ce")))
- return error("CSyncCheckpoint::CheckSignature() : SetPubKey failed");
- if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
- return error("CSyncCheckpoint::CheckSignature() : verify signature failed");
-
- // Now unserialize the data
- CDataStream sMsg(vchMsg);
- sMsg >> *(CUnsignedSyncCheckpoint*)this;
- return true;
- }
-
+ void SetNull();
+ bool IsNull() const;
+ uint256 GetHash() const;
+ bool RelayTo(CNode* pnode) const;
+ bool CheckSignature();
bool ProcessSyncCheckpoint(CNode* pfrom);
};
-//
-// Block-chain checkpoints are compiled-in sanity checks.
-// They are updated every release or three.
-//
-namespace Checkpoints
-{
- // Returns true if block passes checkpoint checks
- bool CheckHardened(int nHeight, const uint256& hash);
-
- // 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);
-
- extern uint256 hashSyncCheckpoint;
- extern CSyncCheckpoint checkpointMessage;
- extern CCriticalSection cs_hashSyncCheckpoint;
-
- bool AcceptPendingSyncCheckpoint();
- uint256 AutoSelectSyncCheckpoint();
- bool CheckSync(int nHeight, const uint256& hashBlock);
-
- // ppcoin: automatic checkpoint
- extern int nAutoCheckpoint;
- extern int nBranchPoint;
-
- bool CheckAuto(const CBlockIndex *pindex);
- int GetNextChainCheckpoint(const CBlockIndex *pindex);
- int GetNextAutoCheckpoint(int nCheckpoint);
- void AdvanceAutoCheckpoint(int nCheckpoint);
- bool ResetAutoCheckpoint(int nCheckpoint);
-}
-
#endif