// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2013 The Bitcoin developers
+// Copyright (c) 2009-2014 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "bitcoin-config.h"
#endif
-#include "bignum.h"
#include "chainparams.h"
#include "coins.h"
#include "core.h"
/** The maximum allowed size for a serialized block, in bytes (network rule) */
static const unsigned int MAX_BLOCK_SIZE = 1000000;
-/** Default for -blockmaxsize, maximum size for mined blocks **/
+/** Default for -blockmaxsize and -blockminsize, which control the range of sizes the mining code will create **/
static const unsigned int DEFAULT_BLOCK_MAX_SIZE = 750000;
+static const unsigned int DEFAULT_BLOCK_MIN_SIZE = 0;
/** Default for -blockprioritysize, maximum space for zero/low-fee transactions **/
static const unsigned int DEFAULT_BLOCK_PRIORITY_SIZE = 50000;
/** The maximum size for transactions we're willing to relay/mine */
static const unsigned int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
/** The maximum number of orphan transactions kept in memory */
static const unsigned int MAX_ORPHAN_TRANSACTIONS = MAX_BLOCK_SIZE/100;
+/** The maximum number of orphan blocks kept in memory */
+static const unsigned int MAX_ORPHAN_BLOCKS = 750;
/** The maximum size of a blk?????.dat file (since 0.8) */
static const unsigned int MAX_BLOCKFILE_SIZE = 0x8000000; // 128 MiB
/** The pre-allocation chunk size for blk?????.dat files (since 0.8) */
static const unsigned int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 1985 UTC
/** Maximum number of script-checking threads allowed */
static const int MAX_SCRIPTCHECK_THREADS = 16;
+/** -par default (number of script-checking threads, 0 = auto) */
+static const int DEFAULT_SCRIPTCHECK_THREADS = 0;
+/** Number of blocks that can be requested at any given time from a single peer. */
+static const int MAX_BLOCKS_IN_TRANSIT_PER_PEER = 128;
+/** Timeout in seconds before considering a block download peer unresponsive. */
+static const unsigned int BLOCK_DOWNLOAD_TIMEOUT = 60;
+
#ifdef USE_UPNP
static const int fHaveUPnP = true;
#else
extern CScript COINBASE_FLAGS;
-
-
-
-
-
-
extern CCriticalSection cs_main;
extern CTxMemPool mempool;
extern std::map<uint256, CBlockIndex*> mapBlockIndex;
extern int nScriptCheckThreads;
extern bool fTxIndex;
extern unsigned int nCoinCacheSize;
-extern bool fHaveGUI;
// Minimum disk space required - used in CheckDiskSpace()
static const uint64_t nMinDiskSpace = 52428800;
bool CheckProofOfWork(uint256 hash, unsigned int nBits);
/** Calculate the minimum amount of work a received block needs, without knowing its direct parent */
unsigned int ComputeMinWork(unsigned int nBase, int64_t nTime);
-/** Get the number of active peers */
-int GetNumBlocksOfPeers();
/** Check whether we are doing an initial block download (synchronizing from disk or network) */
bool IsInitialBlockDownload();
/** Format a string that describes several potential problems detected by the core */
bool AbortNode(const std::string &msg);
/** Get statistics from node state */
bool GetNodeStateStats(NodeId nodeid, CNodeStateStats &stats);
+/** Increase a node's misbehavior score. */
+void Misbehaving(NodeId nodeid, int howmuch);
+
/** (try to) add transaction to memory pool **/
bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransaction &tx, bool fLimitFree,
// DUP CHECKSIG DROP ... repeated 100 times... OP_1
//
- /** Check for standard transaction types
- @param[in] mapInputs Map of previous transactions that have outputs we're spending
- @return True if all inputs (scriptSigs) use only standard transaction forms
- */
+/** Check for standard transaction types
+ @param[in] mapInputs Map of previous transactions that have outputs we're spending
+ @return True if all inputs (scriptSigs) use only standard transaction forms
+*/
bool AreInputsStandard(const CTransaction& tx, CCoinsViewCache& mapInputs);
/** Count ECDSA signature operations the old-fashioned (pre-0.6) way
// This does not modify the UTXO set. If pvChecks is not NULL, script checks are pushed onto it
// instead of being performed inline.
bool CheckInputs(const CTransaction& tx, CValidationState &state, CCoinsViewCache &view, bool fScriptChecks = true,
- unsigned int flags = SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_STRICTENC,
+ unsigned int flags = STANDARD_SCRIPT_VERIFY_FLAGS,
std::vector<CScriptCheck> *pvChecks = NULL);
// Apply the effects of this transaction on the UTXO set represented by view
filein >> hashChecksum;
}
catch (std::exception &e) {
- return error("%s : Deserialize or I/O error - %s", __PRETTY_FUNCTION__, e.what());
+ return error("%s : Deserialize or I/O error - %s", __func__, e.what());
}
// Verify checksum
/** A transaction with a merkle branch linking it to the block chain. */
class CMerkleTx : public CTransaction
{
+private:
+ int GetDepthInMainChainINTERNAL(CBlockIndex* &pindexRet) const;
+
public:
uint256 hashBlock;
std::vector<uint256> vMerkleBranch;
int SetMerkleBranch(const CBlock* pblock=NULL);
+
+ // Return depth of transaction in blockchain:
+ // -1 : not in blockchain, and not in memory pool (conflicted transaction)
+ // 0 : in memory pool, waiting to be included in a block
+ // >=1 : this many blocks deep in the main chain
int GetDepthInMainChain(CBlockIndex* &pindexRet) const;
int GetDepthInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChain(pindexRet); }
- bool IsInMainChain() const { return GetDepthInMainChain() > 0; }
+ bool IsInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChainINTERNAL(pindexRet) > 0; }
int GetBlocksToMaturity() const;
bool AcceptToMemoryPool(bool fLimitFree=true);
};
bool AddToBlockIndex(CBlock& block, CValidationState& state, const CDiskBlockPos& pos);
// Context-independent validity checks
+bool CheckBlockHeader(const CBlockHeader& block, CValidationState& state, bool fCheckPOW = true);
bool CheckBlock(const CBlock& block, CValidationState& state, bool fCheckPOW = true, bool fCheckMerkleRoot = true);
// Store block on disk
// if dbp is provided, the file is known to already reside on disk
-bool AcceptBlock(CBlock& block, CValidationState& state, CDiskBlockPos* dbp = NULL);
+bool AcceptBlock(CBlock& block, CValidationState& state, CBlockIndex **pindex, CDiskBlockPos* dbp = NULL);
+bool AcceptBlockHeader(CBlockHeader& block, CValidationState& state, CBlockIndex **ppindex= NULL);
return (int64_t)nTime;
}
- CBigNum GetBlockWork() const
+ uint256 GetBlockWork() const
{
- CBigNum bnTarget;
- bnTarget.SetCompact(nBits);
- if (bnTarget <= 0)
+ uint256 bnTarget;
+ bool fNegative;
+ bool fOverflow;
+ bnTarget.SetCompact(nBits, &fNegative, &fOverflow);
+ if (fNegative || fOverflow || bnTarget == 0)
return 0;
- return (CBigNum(1)<<256) / (bnTarget+1);
+ // We need to compute 2**256 / (bnTarget+1), but we can't represent 2**256
+ // as it's too large for a uint256. However, as 2**256 is at least as large
+ // as bnTarget+1, it is equal to ((2**256 - bnTarget - 1) / (bnTarget+1)) + 1,
+ // or ~bnTarget / (nTarget+1) + 1.
+ return (~bnTarget / (bnTarget + 1)) + 1;
}
bool CheckIndex() const
return pbegin[(pend - pbegin)/2];
}
- int64_t GetMedianTime() const;
-
/**
* Returns true if there are nRequired or more blocks of minVersion or above
* in the last nToCheck blocks, starting at pstart and going backwards.
{
LogPrintf("%s\n", ToString().c_str());
}
+
+ // Check whether this block index entry is valid up to the passed validity level.
+ bool IsValid(enum BlockStatus nUpTo = BLOCK_VALID_TRANSACTIONS) const
+ {
+ assert(!(nUpTo & ~BLOCK_VALID_MASK)); // Only validity flags allowed.
+ if (nStatus & BLOCK_FAILED_MASK)
+ return false;
+ return ((nStatus & BLOCK_VALID_MASK) >= nUpTo);
+ }
+
+ // Raise the validity level of this block index entry.
+ // Returns true if the validity was changed.
+ bool RaiseValidity(enum BlockStatus nUpTo)
+ {
+ assert(!(nUpTo & ~BLOCK_VALID_MASK)); // Only validity flags allowed.
+ if (nStatus & BLOCK_FAILED_MASK)
+ return false;
+ if ((nStatus & BLOCK_VALID_MASK) < nUpTo) {
+ nStatus = (nStatus & ~BLOCK_VALID_MASK) | nUpTo;
+ return true;
+ }
+ return false;
+ }
};
unsigned char _chRejectCode=0, std::string _strRejectReason="") {
return DoS(0, ret, _chRejectCode, _strRejectReason);
}
- bool Error() {
+ bool Error(std::string strRejectReasonIn="") {
+ if (mode == MODE_VALID)
+ strRejectReason = strRejectReasonIn;
mode = MODE_ERROR;
return false;
}
bool Abort(const std::string &msg) {
AbortNode(msg);
- return Error();
+ return Error(msg);
}
bool IsValid() const {
return mode == MODE_VALID;
projects / VerusCoin.git / blobdiff