-// 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;
+
+#ifdef WIN32
+#undef STRICT
+#undef PERMISSIVE
+#undef ADVISORY
+#endif
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
+ 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);
- // ppcoin: synchronized checkpoint
+ // 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();
+}
- class CUnsignedSyncCheckpoint
+// ppcoin: synchronized checkpoint
+class CUnsignedSyncCheckpoint
+{
+public:
+ int nVersion;
+ uint256 hashCheckpoint; // checkpoint block
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(this->nVersion);
+ nVersion = this->nVersion;
+ READWRITE(hashCheckpoint);
+ )
+
+ void SetNull()
{
- public:
- int nVersion;
- uint256 hashCheckpoint; // checkpoint block
-
- IMPLEMENT_SERIALIZE
- (
- READWRITE(this->nVersion);
- nVersion = this->nVersion;
- READWRITE(hashCheckpoint);
- )
-
- void SetNull()
- {
- nVersion = 1;
- hashCheckpoint = 0;
- }
+ 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());
- }
- };
-
- class CSyncCheckpoint : public CUnsignedSyncCheckpoint
+ std::string ToString() const
{
- public:
- std::vector<unsigned char> vchMsg;
- std::vector<unsigned char> vchSig;
+ return strprintf(
+ "CSyncCheckpoint(\n"
+ " nVersion = %d\n"
+ " hashCheckpoint = %s\n"
+ ")\n",
+ nVersion,
+ hashCheckpoint.ToString().c_str());
+ }
+};
+
+class CSyncCheckpoint : public CUnsignedSyncCheckpoint
+{
+public:
+ static const std::string strMasterPubKey;
+ static std::string strMasterPrivKey;
- CSyncCheckpoint()
- {
- SetNull();
- }
+ std::vector<unsigned char> vchMsg;
+ std::vector<unsigned char> vchSig;
- IMPLEMENT_SERIALIZE
- (
- READWRITE(vchMsg);
- READWRITE(vchSig);
- )
+ CSyncCheckpoint()
+ {
+ SetNull();
+ }
- void SetNull()
- {
- CUnsignedSyncCheckpoint::SetNull();
- vchMsg.clear();
- vchSig.clear();
- }
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(vchMsg);
+ READWRITE(vchSig);
+ )
- bool IsNull() const
- {
- return (hashCheckpoint == 0);
- }
+ void SetNull()
+ {
+ CUnsignedSyncCheckpoint::SetNull();
+ vchMsg.clear();
+ vchSig.clear();
+ }
- uint256 GetHash() const
- {
- return SerializeHash(*this);
- }
+ bool IsNull() const
+ {
+ return (hashCheckpoint == 0);
+ }
- 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;
- }
+ uint256 GetHash() const
+ {
+ return SerializeHash(*this);
+ }
- bool CheckSignature()
+ bool RelayTo(CNode* pnode) const
+ {
+ // returns true if wasn't already sent
+ if (pnode->hashCheckpointKnown != hashCheckpoint)
{
- CKey key;
- if (!key.SetPubKey(ParseHex("0487ca85b6ae9d311f996c7616d20d0c88a5b4f07d25e78f419019f35cce6522acf978b2d99f0e7a58db1f120439e5c1889266927854aa57c93956c2569188a539")))
- 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;
+ pnode->hashCheckpointKnown = hashCheckpoint;
+ pnode->PushMessage("checkpoint", *this);
return true;
}
+ return false;
+ }
- bool ProcessSyncCheckpoint();
- };
-
- // 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);
-}
+ bool CheckSignature();
+ bool ProcessSyncCheckpoint(CNode* pfrom);
+};
#endif
git://git.novaco.in / novacoin.git / blobdiff