-// 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 "net.h"
-// 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;
class uint256;
class CBlockIndex;
class CSyncCheckpoint;
-//
// 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 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 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:
- int nVersion;
+ int32_t nVersion;
uint256 hashCheckpoint; // checkpoint block
IMPLEMENT_SERIALIZE
READWRITE(hashCheckpoint);
)
- void SetNull()
- {
- nVersion = 1;
- hashCheckpoint = 0;
- }
-
- std::string ToString() const
- {
- return strprintf(
- "CSyncCheckpoint(\n"
- " nVersion = %d\n"
- " hashCheckpoint = %s\n"
- ")\n",
- nVersion,
- hashCheckpoint.ToString().c_str());
- }
-
- void print() const
- {
- printf("%s", ToString().c_str());
- }
+ 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()
- {
- 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;
- }
-
+ void SetNull();
+ bool IsNull() const;
+ uint256 GetHash() const;
+ bool RelayTo(CNode* pnode) const;
bool CheckSignature();
bool ProcessSyncCheckpoint(CNode* pfrom);
};