Rename the remaining main.{h,cpp} to validation.{h,cpp}

1 files changed, 0 insertions, 565 deletions

diff --git a/src/main.h b/src/main.h
deleted file mode 100644
index e5e1a68414..0000000000
--- a/src/main.h
+++ /dev/null
@@ -1,565 +0,0 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2015 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#ifndef BITCOIN_MAIN_H
-#define BITCOIN_MAIN_H
-
-#if defined(HAVE_CONFIG_H)
-#include "config/bitcoin-config.h"
-#endif
-
-#include "amount.h"
-#include "chain.h"
-#include "coins.h"
-#include "protocol.h" // For CMessageHeader::MessageStartChars
-#include "script/script_error.h"
-#include "sync.h"
-#include "versionbits.h"
-
-#include <algorithm>
-#include <exception>
-#include <map>
-#include <set>
-#include <stdint.h>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include <atomic>
-
-#include <boost/unordered_map.hpp>
-#include <boost/filesystem/path.hpp>
-
-class CBlockIndex;
-class CBlockTreeDB;
-class CBloomFilter;
-class CChainParams;
-class CInv;
-class CConnman;
-class CScriptCheck;
-class CTxMemPool;
-class CValidationInterface;
-class CValidationState;
-
-struct PrecomputedTransactionData;
-struct LockPoints;
-
-/** Default for DEFAULT_WHITELISTRELAY. */
-static const bool DEFAULT_WHITELISTRELAY = true;
-/** Default for DEFAULT_WHITELISTFORCERELAY. */
-static const bool DEFAULT_WHITELISTFORCERELAY = true;
-/** Default for -minrelaytxfee, minimum relay fee for transactions */
-static const unsigned int DEFAULT_MIN_RELAY_TX_FEE = 1000;
-//! -maxtxfee default
-static const CAmount DEFAULT_TRANSACTION_MAXFEE = 0.1 * COIN;
-//! Discourage users to set fees higher than this amount (in satoshis) per kB
-static const CAmount HIGH_TX_FEE_PER_KB = 0.01 * COIN;
-//! -maxtxfee will warn if called with a higher fee than this amount (in satoshis)
-static const CAmount HIGH_MAX_TX_FEE = 100 * HIGH_TX_FEE_PER_KB;
-/** Default for -maxorphantx, maximum number of orphan transactions kept in memory */
-static const unsigned int DEFAULT_MAX_ORPHAN_TRANSACTIONS = 100;
-/** Expiration time for orphan transactions in seconds */
-static const int64_t ORPHAN_TX_EXPIRE_TIME = 20 * 60;
-/** Minimum time between orphan transactions expire time checks in seconds */
-static const int64_t ORPHAN_TX_EXPIRE_INTERVAL = 5 * 60;
-/** Default for -limitancestorcount, max number of in-mempool ancestors */
-static const unsigned int DEFAULT_ANCESTOR_LIMIT = 25;
-/** Default for -limitancestorsize, maximum kilobytes of tx + all in-mempool ancestors */
-static const unsigned int DEFAULT_ANCESTOR_SIZE_LIMIT = 101;
-/** Default for -limitdescendantcount, max number of in-mempool descendants */
-static const unsigned int DEFAULT_DESCENDANT_LIMIT = 25;
-/** Default for -limitdescendantsize, maximum kilobytes of in-mempool descendants */
-static const unsigned int DEFAULT_DESCENDANT_SIZE_LIMIT = 101;
-/** Default for -mempoolexpiry, expiration time for mempool transactions in hours */
-static const unsigned int DEFAULT_MEMPOOL_EXPIRY = 72;
-/** 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 BLOCKFILE_CHUNK_SIZE = 0x1000000; // 16 MiB
-/** The pre-allocation chunk size for rev?????.dat files (since 0.8) */
-static const unsigned int UNDOFILE_CHUNK_SIZE = 0x100000; // 1 MiB
-
-/** 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 = 16;
-/** Timeout in seconds during which a peer must stall block download progress before being disconnected. */
-static const unsigned int BLOCK_STALLING_TIMEOUT = 2;
-/** Number of headers sent in one getheaders result. We rely on the assumption that if a peer sends
- *  less than this number, we reached its tip. Changing this value is a protocol upgrade. */
-static const unsigned int MAX_HEADERS_RESULTS = 2000;
-/** Maximum depth of blocks we're willing to serve as compact blocks to peers
- *  when requested. For older blocks, a regular BLOCK response will be sent. */
-static const int MAX_CMPCTBLOCK_DEPTH = 5;
-/** Maximum depth of blocks we're willing to respond to GETBLOCKTXN requests for. */
-static const int MAX_BLOCKTXN_DEPTH = 10;
-/** Size of the "block download window": how far ahead of our current height do we fetch?
- *  Larger windows tolerate larger download speed differences between peer, but increase the potential
- *  degree of disordering of blocks on disk (which make reindexing and in the future perhaps pruning
- *  harder). We'll probably want to make this a per-peer adaptive value at some point. */
-static const unsigned int BLOCK_DOWNLOAD_WINDOW = 1024;
-/** Time to wait (in seconds) between writing blocks/block index to disk. */
-static const unsigned int DATABASE_WRITE_INTERVAL = 60 * 60;
-/** Time to wait (in seconds) between flushing chainstate to disk. */
-static const unsigned int DATABASE_FLUSH_INTERVAL = 24 * 60 * 60;
-/** Maximum length of reject messages. */
-static const unsigned int MAX_REJECT_MESSAGE_LENGTH = 111;
-/** Average delay between local address broadcasts in seconds. */
-static const unsigned int AVG_LOCAL_ADDRESS_BROADCAST_INTERVAL = 24 * 24 * 60;
-/** Average delay between peer address broadcasts in seconds. */
-static const unsigned int AVG_ADDRESS_BROADCAST_INTERVAL = 30;
-/** Average delay between trickled inventory transmissions in seconds.
- *  Blocks and whitelisted receivers bypass this, outbound peers get half this delay. */
-static const unsigned int INVENTORY_BROADCAST_INTERVAL = 5;
-/** Maximum number of inventory items to send per transmission.
- *  Limits the impact of low-fee transaction floods. */
-static const unsigned int INVENTORY_BROADCAST_MAX = 7 * INVENTORY_BROADCAST_INTERVAL;
-/** Average delay between feefilter broadcasts in seconds. */
-static const unsigned int AVG_FEEFILTER_BROADCAST_INTERVAL = 10 * 60;
-/** Maximum feefilter broadcast delay after significant change. */
-static const unsigned int MAX_FEEFILTER_CHANGE_DELAY = 5 * 60;
-/** Block download timeout base, expressed in millionths of the block interval (i.e. 10 min) */
-static const int64_t BLOCK_DOWNLOAD_TIMEOUT_BASE = 1000000;
-/** Additional block download timeout per parallel downloading peer (i.e. 5 min) */
-static const int64_t BLOCK_DOWNLOAD_TIMEOUT_PER_PEER = 500000;
-
-static const unsigned int DEFAULT_LIMITFREERELAY = 0;
-static const bool DEFAULT_RELAYPRIORITY = true;
-static const int64_t DEFAULT_MAX_TIP_AGE = 24 * 60 * 60;
-
-/** Default for -permitbaremultisig */
-static const bool DEFAULT_PERMIT_BAREMULTISIG = true;
-static const bool DEFAULT_CHECKPOINTS_ENABLED = true;
-static const bool DEFAULT_TXINDEX = false;
-static const unsigned int DEFAULT_BANSCORE_THRESHOLD = 100;
-
-static const bool DEFAULT_TESTSAFEMODE = false;
-/** Default for -mempoolreplacement */
-static const bool DEFAULT_ENABLE_REPLACEMENT = true;
-/** Default for using fee filter */
-static const bool DEFAULT_FEEFILTER = true;
-
-/** Maximum number of headers to announce when relaying blocks with headers message.*/
-static const unsigned int MAX_BLOCKS_TO_ANNOUNCE = 8;
-
-/** Maximum number of unconnecting headers announcements before DoS score */
-static const int MAX_UNCONNECTING_HEADERS = 10;
-
-static const bool DEFAULT_PEERBLOOMFILTERS = true;
-
-struct BlockHasher
-{
-    size_t operator()(const uint256& hash) const { return hash.GetCheapHash(); }
-};
-
-extern CScript COINBASE_FLAGS;
-extern CCriticalSection cs_main;
-extern CTxMemPool mempool;
-typedef boost::unordered_map<uint256, CBlockIndex*, BlockHasher> BlockMap;
-extern BlockMap mapBlockIndex;
-extern uint64_t nLastBlockTx;
-extern uint64_t nLastBlockSize;
-extern uint64_t nLastBlockWeight;
-extern const std::string strMessageMagic;
-extern CWaitableCriticalSection csBestBlock;
-extern CConditionVariable cvBlockChange;
-extern std::atomic_bool fImporting;
-extern bool fReindex;
-extern int nScriptCheckThreads;
-extern bool fTxIndex;
-extern bool fIsBareMultisigStd;
-extern bool fRequireStandard;
-extern bool fCheckBlockIndex;
-extern bool fCheckpointsEnabled;
-extern size_t nCoinCacheUsage;
-/** A fee rate smaller than this is considered zero fee (for relaying, mining and transaction creation) */
-extern CFeeRate minRelayTxFee;
-/** Absolute maximum transaction fee (in satoshis) used by wallet and mempool (rejects high fee in sendrawtransaction) */
-extern CAmount maxTxFee;
-/** If the tip is older than this (in seconds), the node is considered to be in initial block download. */
-extern int64_t nMaxTipAge;
-extern bool fEnableReplacement;
-
-/** Best header we've seen so far (used for getheaders queries' starting points). */
-extern CBlockIndex *pindexBestHeader;
-
-/** Minimum disk space required - used in CheckDiskSpace() */
-static const uint64_t nMinDiskSpace = 52428800;
-
-/** Pruning-related variables and constants */
-/** True if any block files have ever been pruned. */
-extern bool fHavePruned;
-/** True if we're running in -prune mode. */
-extern bool fPruneMode;
-/** Number of MiB of block files that we're trying to stay below. */
-extern uint64_t nPruneTarget;
-/** Block files containing a block-height within MIN_BLOCKS_TO_KEEP of chainActive.Tip() will not be pruned. */
-static const unsigned int MIN_BLOCKS_TO_KEEP = 288;
-
-static const signed int DEFAULT_CHECKBLOCKS = 6;
-static const unsigned int DEFAULT_CHECKLEVEL = 3;
-
-// Require that user allocate at least 550MB for block & undo files (blk???.dat and rev???.dat)
-// At 1MB per block, 288 blocks = 288MB.
-// Add 15% for Undo data = 331MB
-// Add 20% for Orphan block rate = 397MB
-// We want the low water mark after pruning to be at least 397 MB and since we prune in
-// full block file chunks, we need the high water mark which triggers the prune to be
-// one 128MB block file + added 15% undo data = 147MB greater for a total of 545MB
-// Setting the target to > than 550MB will make it likely we can respect the target.
-static const uint64_t MIN_DISK_SPACE_FOR_BLOCK_FILES = 550 * 1024 * 1024;
-
-/** 
- * Process an incoming block. This only returns after the best known valid
- * block is made active. Note that it does not, however, guarantee that the
- * specific block passed to it has been checked for validity!
- *
- * If you want to *possibly* get feedback on whether pblock is valid, you must
- * install a CValidationInterface (see validationinterface.h) - this will have
- * its BlockChecked method called whenever *any* block completes validation.
- *
- * Note that we guarantee that either the proof-of-work is valid on pblock, or
- * (and possibly also) BlockChecked will have been called.
- * 
- * Call without cs_main held.
- *
- * @param[in]   pblock  The block we want to process.
- * @param[in]   fForceProcessing Process this block even if unrequested; used for non-network block sources and whitelisted peers.
- * @param[out]  dbp     The already known disk position of pblock, or NULL if not yet stored.
- * @param[out]  fNewBlock A boolean which is set to indicate if the block was first received via this call
- * @return True if state.IsValid()
- */
-bool ProcessNewBlock(const CChainParams& chainparams, const CBlock* pblock, bool fForceProcessing, const CDiskBlockPos* dbp, bool* fNewBlock);
-
-/**
- * Process incoming block headers.
- *
- * Call without cs_main held.
- *
- * @param[in]  block The block headers themselves
- * @param[out] state This may be set to an Error state if any error occurred processing them
- * @param[in]  chainparams The params for the chain we want to connect to
- * @param[out] ppindex If set, the pointer will be set to point to the last new block index object for the given headers
- */
-bool ProcessNewBlockHeaders(const std::vector<CBlockHeader>& block, CValidationState& state, const CChainParams& chainparams, CBlockIndex** ppindex=NULL);
-
-/** Check whether enough disk space is available for an incoming block */
-bool CheckDiskSpace(uint64_t nAdditionalBytes = 0);
-/** Open a block file (blk?????.dat) */
-FILE* OpenBlockFile(const CDiskBlockPos &pos, bool fReadOnly = false);
-/** Open an undo file (rev?????.dat) */
-FILE* OpenUndoFile(const CDiskBlockPos &pos, bool fReadOnly = false);
-/** Translation to a filesystem path */
-boost::filesystem::path GetBlockPosFilename(const CDiskBlockPos &pos, const char *prefix);
-/** Import blocks from an external file */
-bool LoadExternalBlockFile(const CChainParams& chainparams, FILE* fileIn, CDiskBlockPos *dbp = NULL);
-/** Initialize a new block tree database + block data on disk */
-bool InitBlockIndex(const CChainParams& chainparams);
-/** Load the block tree and coins database from disk */
-bool LoadBlockIndex(const CChainParams& chainparams);
-/** Unload database information */
-void UnloadBlockIndex();
-/** Run an instance of the script checking thread */
-void ThreadScriptCheck();
-/** 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.
- * strFor can have three values:
- * - "rpc": get critical warnings, which should put the client in safe mode if non-empty
- * - "statusbar": get all warnings
- * - "gui": get all warnings, translated (where possible) for GUI
- * This function only returns the highest priority warning of the set selected by strFor.
- */
-std::string GetWarnings(const std::string& strFor);
-/** Retrieve a transaction (from memory pool, or from disk, if possible) */
-bool GetTransaction(const uint256 &hash, CTransaction &tx, const Consensus::Params& params, uint256 &hashBlock, bool fAllowSlow = false);
-/** Find the best known block, and make it the tip of the block chain */
-bool ActivateBestChain(CValidationState& state, const CChainParams& chainparams, const CBlock* pblock = NULL);
-CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams);
-
-/**
- * Prune block and undo files (blk???.dat and undo???.dat) so that the disk space used is less than a user-defined target.
- * The user sets the target (in MB) on the command line or in config file.  This will be run on startup and whenever new
- * space is allocated in a block or undo file, staying below the target. Changing back to unpruned requires a reindex
- * (which in this case means the blockchain must be re-downloaded.)
- *
- * Pruning functions are called from FlushStateToDisk when the global fCheckForPruning flag has been set.
- * Block and undo files are deleted in lock-step (when blk00003.dat is deleted, so is rev00003.dat.)
- * Pruning cannot take place until the longest chain is at least a certain length (100000 on mainnet, 1000 on testnet, 1000 on regtest).
- * Pruning will never delete a block within a defined distance (currently 288) from the active chain's tip.
- * The block index is updated by unsetting HAVE_DATA and HAVE_UNDO for any blocks that were stored in the deleted files.
- * A db flag records the fact that at least some block files have been pruned.
- *
- * @param[out]   setFilesToPrune   The set of file indices that can be unlinked will be returned
- */
-void FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfterHeight);
-
-/**
- *  Actually unlink the specified files
- */
-void UnlinkPrunedFiles(std::set<int>& setFilesToPrune);
-
-/** Create a new block index entry for a given block hash */
-CBlockIndex * InsertBlockIndex(uint256 hash);
-/** Flush all state, indexes and buffers to disk. */
-void FlushStateToDisk();
-/** Prune block files and flush state to disk. */
-void PruneAndFlush();
-
-/** (try to) add transaction to memory pool **/
-bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransaction &tx, bool fLimitFree,
-                        bool* pfMissingInputs, bool fOverrideMempoolLimit=false, const CAmount nAbsurdFee=0);
-
-/** (try to) add transaction to memory pool with a specified acceptance time **/
-bool AcceptToMemoryPoolWithTime(CTxMemPool& pool, CValidationState &state, const CTransaction &tx, bool fLimitFree,
-                        bool* pfMissingInputs, int64_t nAcceptTime, bool fOverrideMempoolLimit=false, const CAmount nAbsurdFee=0);
-
-/** Convert CValidationState to a human-readable message for logging */
-std::string FormatStateMessage(const CValidationState &state);
-
-/** Get the BIP9 state for a given deployment at the current tip. */
-ThresholdState VersionBitsTipState(const Consensus::Params& params, Consensus::DeploymentPos pos);
-
-/** Get the block height at which the BIP9 deployment switched into the state for the block building on the current tip. */
-int VersionBitsTipStateSinceHeight(const Consensus::Params& params, Consensus::DeploymentPos pos);
-
-/** 
- * Count ECDSA signature operations the old-fashioned (pre-0.6) way
- * @return number of sigops this transaction's outputs will produce when spent
- * @see CTransaction::FetchInputs
- */
-unsigned int GetLegacySigOpCount(const CTransaction& tx);
-
-/**
- * Count ECDSA signature operations in pay-to-script-hash inputs.
- * 
- * @param[in] mapInputs Map of previous transactions that have outputs we're spending
- * @return maximum number of sigops required to validate this transaction's inputs
- * @see CTransaction::FetchInputs
- */
-unsigned int GetP2SHSigOpCount(const CTransaction& tx, const CCoinsViewCache& mapInputs);
-
-/**
- * Compute total signature operation cost of a transaction.
- * @param[in] tx     Transaction for which we are computing the cost
- * @param[in] inputs Map of previous transactions that have outputs we're spending
- * @param[out] flags Script verification flags
- * @return Total signature operation cost of tx
- */
-int64_t GetTransactionSigOpCost(const CTransaction& tx, const CCoinsViewCache& inputs, int flags);
-
-/**
- * Check whether all inputs of this transaction are valid (no double spends, scripts & sigs, amounts)
- * 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, const CCoinsViewCache &view, bool fScriptChecks,
-                 unsigned int flags, bool cacheStore, PrecomputedTransactionData& txdata, std::vector<CScriptCheck> *pvChecks = NULL);
-
-/** Apply the effects of this transaction on the UTXO set represented by view */
-void UpdateCoins(const CTransaction& tx, CCoinsViewCache& inputs, int nHeight);
-
-/** Transaction validation functions */
-
-/** Context-independent validity checks */
-bool CheckTransaction(const CTransaction& tx, CValidationState& state, bool fCheckDuplicateInputs=true);
-
-namespace Consensus {
-
-/**
- * Check whether all inputs of this transaction are valid (no double spends and amounts)
- * This does not modify the UTXO set. This does not check scripts and sigs.
- * Preconditions: tx.IsCoinBase() is false.
- */
-bool CheckTxInputs(const CTransaction& tx, CValidationState& state, const CCoinsViewCache& inputs, int nSpendHeight);
-
-} // namespace Consensus
-
-/**
- * Check if transaction is final and can be included in a block with the
- * specified height and time. Consensus critical.
- */
-bool IsFinalTx(const CTransaction &tx, int nBlockHeight, int64_t nBlockTime);
-
-/**
- * Check if transaction will be final in the next block to be created.
- *
- * Calls IsFinalTx() with current block height and appropriate block time.
- *
- * See consensus/consensus.h for flag definitions.
- */
-bool CheckFinalTx(const CTransaction &tx, int flags = -1);
-
-/**
- * Test whether the LockPoints height and time are still valid on the current chain
- */
-bool TestLockPointValidity(const LockPoints* lp);
-
-/**
- * Check if transaction is final per BIP 68 sequence numbers and can be included in a block.
- * Consensus critical. Takes as input a list of heights at which tx's inputs (in order) confirmed.
- */
-bool SequenceLocks(const CTransaction &tx, int flags, std::vector<int>* prevHeights, const CBlockIndex& block);
-
-/**
- * Check if transaction will be BIP 68 final in the next block to be created.
- *
- * Simulates calling SequenceLocks() with data from the tip of the current active chain.
- * Optionally stores in LockPoints the resulting height and time calculated and the hash
- * of the block needed for calculation or skips the calculation and uses the LockPoints
- * passed in for evaluation.
- * The LockPoints should not be considered valid if CheckSequenceLocks returns false.
- *
- * See consensus/consensus.h for flag definitions.
- */
-bool CheckSequenceLocks(const CTransaction &tx, int flags, LockPoints* lp = NULL, bool useExistingLockPoints = false);
-
-/**
- * Closure representing one script verification
- * Note that this stores references to the spending transaction 
- */
-class CScriptCheck
-{
-private:
-    CScript scriptPubKey;
-    CAmount amount;
-    const CTransaction *ptxTo;
-    unsigned int nIn;
-    unsigned int nFlags;
-    bool cacheStore;
-    ScriptError error;
-    PrecomputedTransactionData *txdata;
-
-public:
-    CScriptCheck(): amount(0), ptxTo(0), nIn(0), nFlags(0), cacheStore(false), error(SCRIPT_ERR_UNKNOWN_ERROR) {}
-    CScriptCheck(const CCoins& txFromIn, const CTransaction& txToIn, unsigned int nInIn, unsigned int nFlagsIn, bool cacheIn, PrecomputedTransactionData* txdataIn) :
-        scriptPubKey(txFromIn.vout[txToIn.vin[nInIn].prevout.n].scriptPubKey), amount(txFromIn.vout[txToIn.vin[nInIn].prevout.n].nValue),
-        ptxTo(&txToIn), nIn(nInIn), nFlags(nFlagsIn), cacheStore(cacheIn), error(SCRIPT_ERR_UNKNOWN_ERROR), txdata(txdataIn) { }
-
-    bool operator()();
-
-    void swap(CScriptCheck &check) {
-        scriptPubKey.swap(check.scriptPubKey);
-        std::swap(ptxTo, check.ptxTo);
-        std::swap(amount, check.amount);
-        std::swap(nIn, check.nIn);
-        std::swap(nFlags, check.nFlags);
-        std::swap(cacheStore, check.cacheStore);
-        std::swap(error, check.error);
-        std::swap(txdata, check.txdata);
-    }
-
-    ScriptError GetScriptError() const { return error; }
-};
-
-
-/** Functions for disk access for blocks */
-bool WriteBlockToDisk(const CBlock& block, CDiskBlockPos& pos, const CMessageHeader::MessageStartChars& messageStart);
-bool ReadBlockFromDisk(CBlock& block, const CDiskBlockPos& pos, const Consensus::Params& consensusParams);
-bool ReadBlockFromDisk(CBlock& block, const CBlockIndex* pindex, const Consensus::Params& consensusParams);
-
-/** Functions for validating blocks and updating the block tree */
-
-/** Context-independent validity checks */
-bool CheckBlockHeader(const CBlockHeader& block, CValidationState& state, const Consensus::Params& consensusParams, bool fCheckPOW = true);
-bool CheckBlock(const CBlock& block, CValidationState& state, const Consensus::Params& consensusParams, bool fCheckPOW = true, bool fCheckMerkleRoot = true);
-
-/** Context-dependent validity checks.
- *  By "context", we mean only the previous block headers, but not the UTXO
- *  set; UTXO-related validity checks are done in ConnectBlock(). */
-bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& state, const Consensus::Params& consensusParams, const CBlockIndex* pindexPrev, int64_t nAdjustedTime);
-bool ContextualCheckBlock(const CBlock& block, CValidationState& state, const Consensus::Params& consensusParams, const CBlockIndex* pindexPrev);
-
-/** Apply the effects of this block (with given index) on the UTXO set represented by coins.
- *  Validity checks that depend on the UTXO set are also done; ConnectBlock()
- *  can fail if those validity checks fail (among other reasons). */
-bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pindex, CCoinsViewCache& coins,
-                  const CChainParams& chainparams, bool fJustCheck = false);
-
-/** Undo the effects of this block (with given index) on the UTXO set represented by coins.
- *  In case pfClean is provided, operation will try to be tolerant about errors, and *pfClean
- *  will be true if no problems were found. Otherwise, the return value will be false in case
- *  of problems. Note that in any case, coins may be modified. */
-bool DisconnectBlock(const CBlock& block, CValidationState& state, const CBlockIndex* pindex, CCoinsViewCache& coins, bool* pfClean = NULL);
-
-/** Check a block is completely valid from start to finish (only works on top of our current best block, with cs_main held) */
-bool TestBlockValidity(CValidationState& state, const CChainParams& chainparams, const CBlock& block, CBlockIndex* pindexPrev, bool fCheckPOW = true, bool fCheckMerkleRoot = true);
-
-/** Check whether witness commitments are required for block. */
-bool IsWitnessEnabled(const CBlockIndex* pindexPrev, const Consensus::Params& params);
-
-/** When there are blocks in the active chain with missing data, rewind the chainstate and remove them from the block index */
-bool RewindBlockIndex(const CChainParams& params);
-
-/** Update uncommitted block structures (currently: only the witness nonce). This is safe for submitted blocks. */
-void UpdateUncommittedBlockStructures(CBlock& block, const CBlockIndex* pindexPrev, const Consensus::Params& consensusParams);
-
-/** Produce the necessary coinbase commitment for a block (modifies the hash, don't call for mined blocks). */
-std::vector<unsigned char> GenerateCoinbaseCommitment(CBlock& block, const CBlockIndex* pindexPrev, const Consensus::Params& consensusParams);
-
-/** RAII wrapper for VerifyDB: Verify consistency of the block and coin databases */
-class CVerifyDB {
-public:
-    CVerifyDB();
-    ~CVerifyDB();
-    bool VerifyDB(const CChainParams& chainparams, CCoinsView *coinsview, int nCheckLevel, int nCheckDepth);
-};
-
-/** Find the last common block between the parameter chain and a locator. */
-CBlockIndex* FindForkInGlobalIndex(const CChain& chain, const CBlockLocator& locator);
-
-/** Mark a block as precious and reorganize. */
-bool PreciousBlock(CValidationState& state, const CChainParams& params, CBlockIndex *pindex);
-
-/** Mark a block as invalid. */
-bool InvalidateBlock(CValidationState& state, const CChainParams& chainparams, CBlockIndex *pindex);
-
-/** Remove invalidity status from a block and its descendants. */
-bool ResetBlockFailureFlags(CBlockIndex *pindex);
-
-/** The currently-connected chain of blocks (protected by cs_main). */
-extern CChain chainActive;
-
-/** Global variable that points to the active CCoinsView (protected by cs_main) */
-extern CCoinsViewCache *pcoinsTip;
-
-/** Global variable that points to the active block tree (protected by cs_main) */
-extern CBlockTreeDB *pblocktree;
-
-/**
- * Return the spend height, which is one more than the inputs.GetBestBlock().
- * While checking, GetBestBlock() refers to the parent block. (protected by cs_main)
- * This is also true for mempool checks.
- */
-int GetSpendHeight(const CCoinsViewCache& inputs);
-
-extern VersionBitsCache versionbitscache;
-
-/**
- * Determine what nVersion a new block should use.
- */
-int32_t ComputeBlockVersion(const CBlockIndex* pindexPrev, const Consensus::Params& params);
-
-/** Reject codes greater or equal to this can be returned by AcceptToMemPool
- * for transactions, to signal internal conditions. They cannot and should not
- * be sent over the P2P network.
- */
-static const unsigned int REJECT_INTERNAL = 0x100;
-/** Too high fee. Can not be triggered by P2P transactions */
-static const unsigned int REJECT_HIGHFEE = 0x100;
-/** Transaction is already known (either in mempool or blockchain) */
-static const unsigned int REJECT_ALREADY_KNOWN = 0x101;
-/** Transaction conflicts with a transaction already known */
-static const unsigned int REJECT_CONFLICT = 0x102;
-
-/** Dump the mempool to disk. */
-void DumpMempool();
-
-/** Load the mempool from disk. */
-bool LoadMempool();
-
-#endif // BITCOIN_MAIN_H