#include <map>
#include "util.h"
-// ppcoin: auto checkpoint min at 1 day; max at 5 days
-#define AUTO_CHECKPOINT_MIN_SPAN (60 * 60 * 24)
-#define AUTO_CHECKPOINT_MAX_SPAN (60 * 60 * 24 * 5)
-#define AUTO_CHECKPOINT_TRUST_SPAN (60 * 60 * 24 * 7)
+// 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)
class uint256;
class CBlockIndex;
+// ppcoin: synchronized checkpoint
+class CUnsignedSyncCheckpoint
+{
+public:
+ int nVersion;
+ uint256 hashCheckpoint; // checkpoint block
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(this->nVersion);
+ nVersion = this->nVersion;
+ 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());
+ }
+};
+
+class CSyncCheckpoint : public CUnsignedSyncCheckpoint
+{
+public:
+ std::vector<unsigned char> vchMsg;
+ std::vector<unsigned char> vchSig;
+
+ CSyncCheckpoint()
+ {
+ SetNull();
+ }
+
+ IMPLEMENT_SERIALIZE
+ (
+ READWRITE(vchMsg);
+ 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;
+ }
+
+ bool ProcessSyncCheckpoint(CNode* pfrom);
+};
+
//
// Block-chain checkpoints are compiled-in sanity checks.
// They are updated every release or three.
//
namespace Checkpoints
{
- extern int nAutoCheckpoint;
- extern int nBranchPoint;
-
// Returns true if block passes checkpoint checks
bool CheckHardened(int nHeight, const uint256& hash);
- bool CheckAuto(const CBlockIndex *pindex);
-
- int GetNextChainCheckpoint(const CBlockIndex *pindex);
- int GetNextAutoCheckpoint(int nCheckpoint);
- void AdvanceAutoCheckpoint(int nCheckpoint);
- bool ResetAutoCheckpoint(int nCheckpoint);
// 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 uint256 hashInvalidCheckpoint;
+ extern CCriticalSection cs_hashSyncCheckpoint;
+
+ bool AcceptPendingSyncCheckpoint();
+ uint256 AutoSelectSyncCheckpoint();
+ bool CheckSync(const uint256& hashBlock, const CBlockIndex* pindexPrev);
+ bool IsPendingSyncCheckpoint(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