// Copyright (c) 2009-2010 Satoshi Nakamoto // Copyright (c) 2009-2019 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_WALLET_WALLET_H #define BITCOIN_WALLET_WALLET_H #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include //! Explicitly unload and delete the wallet. //! Blocks the current thread after signaling the unload intent so that all //! wallet clients release the wallet. //! Note that, when blocking is not required, the wallet is implicitly unloaded //! by the shared pointer deleter. void UnloadWallet(std::shared_ptr&& wallet); bool AddWallet(const std::shared_ptr& wallet); bool RemoveWallet(const std::shared_ptr& wallet); bool HasWallets(); std::vector> GetWallets(); std::shared_ptr GetWallet(const std::string& name); std::shared_ptr LoadWallet(interfaces::Chain& chain, const WalletLocation& location, std::string& error, std::vector& warnings); enum class WalletCreationStatus { SUCCESS, CREATION_FAILED, ENCRYPTION_FAILED }; WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, std::string& error, std::vector& warnings, std::shared_ptr& result); //! -paytxfee default constexpr CAmount DEFAULT_PAY_TX_FEE = 0; //! -fallbackfee default static const CAmount DEFAULT_FALLBACK_FEE = 0; //! -discardfee default static const CAmount DEFAULT_DISCARD_FEE = 10000; //! -mintxfee default static const CAmount DEFAULT_TRANSACTION_MINFEE = 1000; //! minimum recommended increment for BIP 125 replacement txs static const CAmount WALLET_INCREMENTAL_RELAY_FEE = 5000; //! Default for -spendzeroconfchange static const bool DEFAULT_SPEND_ZEROCONF_CHANGE = true; //! Default for -walletrejectlongchains static const bool DEFAULT_WALLET_REJECT_LONG_CHAINS = false; //! -txconfirmtarget default static const unsigned int DEFAULT_TX_CONFIRM_TARGET = 6; //! -walletrbf default static const bool DEFAULT_WALLET_RBF = false; static const bool DEFAULT_WALLETBROADCAST = true; static const bool DEFAULT_DISABLE_WALLET = false; //! -maxtxfee default constexpr CAmount DEFAULT_TRANSACTION_MAXFEE{COIN / 10}; //! Discourage users to set fees higher than this amount (in satoshis) per kB constexpr CAmount HIGH_TX_FEE_PER_KB{COIN / 100}; //! -maxtxfee will warn if called with a higher fee than this amount (in satoshis) constexpr CAmount HIGH_MAX_TX_FEE{100 * HIGH_TX_FEE_PER_KB}; //! Pre-calculated constants for input size estimation in *virtual size* static constexpr size_t DUMMY_NESTED_P2WPKH_INPUT_SIZE = 91; class CCoinControl; class COutput; class CScript; class CWalletTx; struct FeeCalculation; enum class FeeEstimateMode; class ReserveDestination; //! Default for -addresstype constexpr OutputType DEFAULT_ADDRESS_TYPE{OutputType::BECH32}; //! Default for -changetype constexpr OutputType DEFAULT_CHANGE_TYPE{OutputType::CHANGE_AUTO}; static constexpr uint64_t KNOWN_WALLET_FLAGS = WALLET_FLAG_AVOID_REUSE | WALLET_FLAG_BLANK_WALLET | WALLET_FLAG_KEY_ORIGIN_METADATA | WALLET_FLAG_DISABLE_PRIVATE_KEYS; static constexpr uint64_t MUTABLE_WALLET_FLAGS = WALLET_FLAG_AVOID_REUSE; static const std::map WALLET_FLAG_MAP{ {"avoid_reuse", WALLET_FLAG_AVOID_REUSE}, {"blank", WALLET_FLAG_BLANK_WALLET}, {"key_origin_metadata", WALLET_FLAG_KEY_ORIGIN_METADATA}, {"disable_private_keys", WALLET_FLAG_DISABLE_PRIVATE_KEYS}, }; extern const std::map WALLET_FLAG_CAVEATS; /** A wrapper to reserve an address from a wallet * * ReserveDestination is used to reserve an address. * It is currently only used inside of CreateTransaction. * * Instantiating a ReserveDestination does not reserve an address. To do so, * GetReservedDestination() needs to be called on the object. Once an address has been * reserved, call KeepDestination() on the ReserveDestination object to make sure it is not * returned. Call ReturnDestination() to return the address so it can be re-used (for * example, if the address was used in a new transaction * and that transaction was not completed and needed to be aborted). * * If an address is reserved and KeepDestination() is not called, then the address will be * returned when the ReserveDestination goes out of scope. */ class ReserveDestination { protected: //! The wallet to reserve from CWallet* const pwallet; //! The ScriptPubKeyMan to reserve from. Based on type when GetReservedDestination is called ScriptPubKeyMan* m_spk_man{nullptr}; OutputType const type; //! The index of the address's key in the keypool int64_t nIndex{-1}; //! The destination CTxDestination address; //! Whether this is from the internal (change output) keypool bool fInternal{false}; public: //! Construct a ReserveDestination object. This does NOT reserve an address yet explicit ReserveDestination(CWallet* pwallet, OutputType type) : pwallet(pwallet) , type(type) { } ReserveDestination(const ReserveDestination&) = delete; ReserveDestination& operator=(const ReserveDestination&) = delete; //! Destructor. If a key has been reserved and not KeepKey'ed, it will be returned to the keypool ~ReserveDestination() { ReturnDestination(); } //! Reserve an address bool GetReservedDestination(CTxDestination& pubkey, bool internal); //! Return reserved address void ReturnDestination(); //! Keep the address. Do not return it's key to the keypool when this object goes out of scope void KeepDestination(); }; /** Address book data */ class CAddressBookData { public: std::string name; std::string purpose; CAddressBookData() : purpose("unknown") {} typedef std::map StringMap; StringMap destdata; }; struct CRecipient { CScript scriptPubKey; CAmount nAmount; bool fSubtractFeeFromAmount; }; typedef std::map mapValue_t; static inline void ReadOrderPos(int64_t& nOrderPos, mapValue_t& mapValue) { if (!mapValue.count("n")) { nOrderPos = -1; // TODO: calculate elsewhere return; } nOrderPos = atoi64(mapValue["n"].c_str()); } static inline void WriteOrderPos(const int64_t& nOrderPos, mapValue_t& mapValue) { if (nOrderPos == -1) return; mapValue["n"] = i64tostr(nOrderPos); } struct COutputEntry { CTxDestination destination; CAmount amount; int vout; }; /** Legacy class used for deserializing vtxPrev for backwards compatibility. * vtxPrev was removed in commit 93a18a3650292afbb441a47d1fa1b94aeb0164e3, * but old wallet.dat files may still contain vtxPrev vectors of CMerkleTxs. * These need to get deserialized for field alignment when deserializing * a CWalletTx, but the deserialized values are discarded.**/ class CMerkleTx { public: template void Unserialize(Stream& s) { CTransactionRef tx; uint256 hashBlock; std::vector vMerkleBranch; int nIndex; s >> tx >> hashBlock >> vMerkleBranch >> nIndex; } }; //Get the marginal bytes of spending the specified output int CalculateMaximumSignedInputSize(const CTxOut& txout, const CWallet* pwallet, bool use_max_sig = false); /** * A transaction with a bunch of additional info that only the owner cares about. * It includes any unrecorded transactions needed to link it back to the block chain. */ class CWalletTx { private: const CWallet* pwallet; /** Constant used in hashBlock to indicate tx has been abandoned, only used at * serialization/deserialization to avoid ambiguity with conflicted. */ static const uint256 ABANDON_HASH; public: /** * Key/value map with information about the transaction. * * The following keys can be read and written through the map and are * serialized in the wallet database: * * "comment", "to" - comment strings provided to sendtoaddress, * and sendmany wallet RPCs * "replaces_txid" - txid (as HexStr) of transaction replaced by * bumpfee on transaction created by bumpfee * "replaced_by_txid" - txid (as HexStr) of transaction created by * bumpfee on transaction replaced by bumpfee * "from", "message" - obsolete fields that could be set in UI prior to * 2011 (removed in commit 4d9b223) * * The following keys are serialized in the wallet database, but shouldn't * be read or written through the map (they will be temporarily added and * removed from the map during serialization): * * "fromaccount" - serialized strFromAccount value * "n" - serialized nOrderPos value * "timesmart" - serialized nTimeSmart value * "spent" - serialized vfSpent value that existed prior to * 2014 (removed in commit 93a18a3) */ mapValue_t mapValue; std::vector > vOrderForm; unsigned int fTimeReceivedIsTxTime; unsigned int nTimeReceived; //!< time received by this node /** * Stable timestamp that never changes, and reflects the order a transaction * was added to the wallet. Timestamp is based on the block time for a * transaction added as part of a block, or else the time when the * transaction was received if it wasn't part of a block, with the timestamp * adjusted in both cases so timestamp order matches the order transactions * were added to the wallet. More details can be found in * CWallet::ComputeTimeSmart(). */ unsigned int nTimeSmart; /** * From me flag is set to 1 for transactions that were created by the wallet * on this bitcoin node, and set to 0 for transactions that were created * externally and came in through the network or sendrawtransaction RPC. */ bool fFromMe; int64_t nOrderPos; //!< position in ordered transaction list std::multimap::const_iterator m_it_wtxOrdered; // memory only enum AmountType { DEBIT, CREDIT, IMMATURE_CREDIT, AVAILABLE_CREDIT, AMOUNTTYPE_ENUM_ELEMENTS }; CAmount GetCachableAmount(AmountType type, const isminefilter& filter, bool recalculate = false) const; mutable CachableAmount m_amounts[AMOUNTTYPE_ENUM_ELEMENTS]; mutable bool fChangeCached; mutable bool fInMempool; mutable CAmount nChangeCached; CWalletTx(const CWallet* pwalletIn, CTransactionRef arg) : tx(std::move(arg)) { Init(pwalletIn); } void Init(const CWallet* pwalletIn) { pwallet = pwalletIn; mapValue.clear(); vOrderForm.clear(); fTimeReceivedIsTxTime = false; nTimeReceived = 0; nTimeSmart = 0; fFromMe = false; fChangeCached = false; fInMempool = false; nChangeCached = 0; nOrderPos = -1; m_confirm = Confirmation{}; } CTransactionRef tx; /* New transactions start as UNCONFIRMED. At BlockConnected, * they will transition to CONFIRMED. In case of reorg, at BlockDisconnected, * they roll back to UNCONFIRMED. If we detect a conflicting transaction at * block connection, we update conflicted tx and its dependencies as CONFLICTED. * If tx isn't confirmed and outside of mempool, the user may switch it to ABANDONED * by using the abandontransaction call. This last status may be override by a CONFLICTED * or CONFIRMED transition. */ enum Status { UNCONFIRMED, CONFIRMED, CONFLICTED, ABANDONED }; /* Confirmation includes tx status and a triplet of {block height/block hash/tx index in block} * at which tx has been confirmed. All three are set to 0 if tx is unconfirmed or abandoned. * Meaning of these fields changes with CONFLICTED state where they instead point to block hash * and block height of the deepest conflicting tx. */ struct Confirmation { Status status; int block_height; uint256 hashBlock; int nIndex; Confirmation(Status s = UNCONFIRMED, int b = 0, uint256 h = uint256(), int i = 0) : status(s), block_height(b), hashBlock(h), nIndex(i) {} }; Confirmation m_confirm; template void Serialize(Stream& s) const { mapValue_t mapValueCopy = mapValue; mapValueCopy["fromaccount"] = ""; WriteOrderPos(nOrderPos, mapValueCopy); if (nTimeSmart) { mapValueCopy["timesmart"] = strprintf("%u", nTimeSmart); } std::vector dummy_vector1; //!< Used to be vMerkleBranch std::vector dummy_vector2; //!< Used to be vtxPrev bool dummy_bool = false; //!< Used to be fSpent uint256 serializedHash = isAbandoned() ? ABANDON_HASH : m_confirm.hashBlock; int serializedIndex = isAbandoned() || isConflicted() ? -1 : m_confirm.nIndex; s << tx << serializedHash << dummy_vector1 << serializedIndex << dummy_vector2 << mapValueCopy << vOrderForm << fTimeReceivedIsTxTime << nTimeReceived << fFromMe << dummy_bool; } template void Unserialize(Stream& s) { Init(nullptr); std::vector dummy_vector1; //!< Used to be vMerkleBranch std::vector dummy_vector2; //!< Used to be vtxPrev bool dummy_bool; //! Used to be fSpent int serializedIndex; s >> tx >> m_confirm.hashBlock >> dummy_vector1 >> serializedIndex >> dummy_vector2 >> mapValue >> vOrderForm >> fTimeReceivedIsTxTime >> nTimeReceived >> fFromMe >> dummy_bool; /* At serialization/deserialization, an nIndex == -1 means that hashBlock refers to * the earliest block in the chain we know this or any in-wallet ancestor conflicts * with. If nIndex == -1 and hashBlock is ABANDON_HASH, it means transaction is abandoned. * In same context, an nIndex >= 0 refers to a confirmed transaction (if hashBlock set) or * unconfirmed one. Older clients interpret nIndex == -1 as unconfirmed for backward * compatibility (pre-commit 9ac63d6). */ if (serializedIndex == -1 && m_confirm.hashBlock == ABANDON_HASH) { setAbandoned(); } else if (serializedIndex == -1) { setConflicted(); } else if (!m_confirm.hashBlock.IsNull()) { m_confirm.nIndex = serializedIndex; setConfirmed(); } ReadOrderPos(nOrderPos, mapValue); nTimeSmart = mapValue.count("timesmart") ? (unsigned int)atoi64(mapValue["timesmart"]) : 0; mapValue.erase("fromaccount"); mapValue.erase("spent"); mapValue.erase("n"); mapValue.erase("timesmart"); } void SetTx(CTransactionRef arg) { tx = std::move(arg); } //! make sure balances are recalculated void MarkDirty() { m_amounts[DEBIT].Reset(); m_amounts[CREDIT].Reset(); m_amounts[IMMATURE_CREDIT].Reset(); m_amounts[AVAILABLE_CREDIT].Reset(); fChangeCached = false; } void BindWallet(CWallet *pwalletIn) { pwallet = pwalletIn; MarkDirty(); } //! filter decides which addresses will count towards the debit CAmount GetDebit(const isminefilter& filter) const; CAmount GetCredit(const isminefilter& filter) const; CAmount GetImmatureCredit(bool fUseCache = true) const; // TODO: Remove "NO_THREAD_SAFETY_ANALYSIS" and replace it with the correct // annotation "EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)". The // annotation "NO_THREAD_SAFETY_ANALYSIS" was temporarily added to avoid // having to resolve the issue of member access into incomplete type CWallet. CAmount GetAvailableCredit(bool fUseCache = true, const isminefilter& filter = ISMINE_SPENDABLE) const NO_THREAD_SAFETY_ANALYSIS; CAmount GetImmatureWatchOnlyCredit(const bool fUseCache = true) const; CAmount GetChange() const; // Get the marginal bytes if spending the specified output from this transaction int GetSpendSize(unsigned int out, bool use_max_sig = false) const { return CalculateMaximumSignedInputSize(tx->vout[out], pwallet, use_max_sig); } void GetAmounts(std::list& listReceived, std::list& listSent, CAmount& nFee, const isminefilter& filter) const; bool IsFromMe(const isminefilter& filter) const { return (GetDebit(filter) > 0); } // True if only scriptSigs are different bool IsEquivalentTo(const CWalletTx& tx) const; bool InMempool() const; bool IsTrusted(interfaces::Chain::Lock& locked_chain) const; bool IsTrusted(interfaces::Chain::Lock& locked_chain, std::set& trusted_parents) const; int64_t GetTxTime() const; // Pass this transaction to node for mempool insertion and relay to peers if flag set to true bool SubmitMemoryPoolAndRelay(std::string& err_string, bool relay); // TODO: Remove "NO_THREAD_SAFETY_ANALYSIS" and replace it with the correct // annotation "EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)". The annotation // "NO_THREAD_SAFETY_ANALYSIS" was temporarily added to avoid having to // resolve the issue of member access into incomplete type CWallet. Note // that we still have the runtime check "AssertLockHeld(pwallet->cs_wallet)" // in place. std::set GetConflicts() const NO_THREAD_SAFETY_ANALYSIS; /** * Return depth of transaction in blockchain: * <0 : conflicts with a transaction this deep in the blockchain * 0 : in memory pool, waiting to be included in a block * >=1 : this many blocks deep in the main chain */ // TODO: Remove "NO_THREAD_SAFETY_ANALYSIS" and replace it with the correct // annotation "EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)". The annotation // "NO_THREAD_SAFETY_ANALYSIS" was temporarily added to avoid having to // resolve the issue of member access into incomplete type CWallet. Note // that we still have the runtime check "AssertLockHeld(pwallet->cs_wallet)" // in place. int GetDepthInMainChain() const NO_THREAD_SAFETY_ANALYSIS; bool IsInMainChain() const { return GetDepthInMainChain() > 0; } /** * @return number of blocks to maturity for this transaction: * 0 : is not a coinbase transaction, or is a mature coinbase transaction * >0 : is a coinbase transaction which matures in this many blocks */ int GetBlocksToMaturity() const; bool isAbandoned() const { return m_confirm.status == CWalletTx::ABANDONED; } void setAbandoned() { m_confirm.status = CWalletTx::ABANDONED; m_confirm.hashBlock = uint256(); m_confirm.block_height = 0; m_confirm.nIndex = 0; } bool isConflicted() const { return m_confirm.status == CWalletTx::CONFLICTED; } void setConflicted() { m_confirm.status = CWalletTx::CONFLICTED; } bool isUnconfirmed() const { return m_confirm.status == CWalletTx::UNCONFIRMED; } void setUnconfirmed() { m_confirm.status = CWalletTx::UNCONFIRMED; } bool isConfirmed() const { return m_confirm.status == CWalletTx::CONFIRMED; } void setConfirmed() { m_confirm.status = CWalletTx::CONFIRMED; } const uint256& GetHash() const { return tx->GetHash(); } bool IsCoinBase() const { return tx->IsCoinBase(); } bool IsImmatureCoinBase() const; }; class COutput { public: const CWalletTx *tx; int i; int nDepth; /** Pre-computed estimated size of this output as a fully-signed input in a transaction. Can be -1 if it could not be calculated */ int nInputBytes; /** Whether we have the private keys to spend this output */ bool fSpendable; /** Whether we know how to spend this output, ignoring the lack of keys */ bool fSolvable; /** Whether to use the maximum sized, 72 byte signature when calculating the size of the input spend. This should only be set when watch-only outputs are allowed */ bool use_max_sig; /** * Whether this output is considered safe to spend. Unconfirmed transactions * from outside keys and unconfirmed replacement transactions are considered * unsafe and will not be used to fund new spending transactions. */ bool fSafe; COutput(const CWalletTx *txIn, int iIn, int nDepthIn, bool fSpendableIn, bool fSolvableIn, bool fSafeIn, bool use_max_sig_in = false) { tx = txIn; i = iIn; nDepth = nDepthIn; fSpendable = fSpendableIn; fSolvable = fSolvableIn; fSafe = fSafeIn; nInputBytes = -1; use_max_sig = use_max_sig_in; // If known and signable by the given wallet, compute nInputBytes // Failure will keep this value -1 if (fSpendable && tx) { nInputBytes = tx->GetSpendSize(i, use_max_sig); } } std::string ToString() const; inline CInputCoin GetInputCoin() const { return CInputCoin(tx->tx, i, nInputBytes); } }; struct CoinSelectionParams { bool use_bnb = true; size_t change_output_size = 0; size_t change_spend_size = 0; CFeeRate effective_fee = CFeeRate(0); size_t tx_noinputs_size = 0; //! Indicate that we are subtracting the fee from outputs bool m_subtract_fee_outputs = false; CoinSelectionParams(bool use_bnb, size_t change_output_size, size_t change_spend_size, CFeeRate effective_fee, size_t tx_noinputs_size) : use_bnb(use_bnb), change_output_size(change_output_size), change_spend_size(change_spend_size), effective_fee(effective_fee), tx_noinputs_size(tx_noinputs_size) {} CoinSelectionParams() {} }; class WalletRescanReserver; //forward declarations for ScanForWalletTransactions/RescanFromTime /** * A CWallet maintains a set of transactions and balances, and provides the ability to create new transactions. */ class CWallet final : public WalletStorage, private interfaces::Chain::Notifications { private: CKeyingMaterial vMasterKey GUARDED_BY(cs_KeyStore); //! if fUseCrypto is true, mapKeys must be empty //! if fUseCrypto is false, vMasterKey must be empty std::atomic fUseCrypto; //! keeps track of whether Unlock has run a thorough check before bool fDecryptionThoroughlyChecked; bool SetCrypted(); bool Unlock(const CKeyingMaterial& vMasterKeyIn, bool accept_no_keys = false); std::atomic fAbortRescan{false}; std::atomic fScanningWallet{false}; // controlled by WalletRescanReserver std::atomic m_scanning_start{0}; std::atomic m_scanning_progress{0}; std::mutex mutexScanning; friend class WalletRescanReserver; //! the current wallet version: clients below this version are not able to load the wallet int nWalletVersion GUARDED_BY(cs_wallet){FEATURE_BASE}; //! the maximum wallet format version: memory-only variable that specifies to what version this wallet may be upgraded int nWalletMaxVersion GUARDED_BY(cs_wallet) = FEATURE_BASE; int64_t nNextResend = 0; int64_t nLastResend = 0; bool fBroadcastTransactions = false; // Local time that the tip block was received. Used to schedule wallet rebroadcasts. std::atomic m_best_block_time {0}; /** * Used to keep track of spent outpoints, and * detect and report conflicts (double-spends or * mutated transactions where the mutant gets mined). */ typedef std::multimap TxSpends; TxSpends mapTxSpends GUARDED_BY(cs_wallet); void AddToSpends(const COutPoint& outpoint, const uint256& wtxid) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); void AddToSpends(const uint256& wtxid) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); /** * Add a transaction to the wallet, or update it. pIndex and posInBlock should * be set when the transaction was known to be included in a block. When * pIndex == nullptr, then wallet state is not updated in AddToWallet, but * notifications happen and cached balances are marked dirty. * * If fUpdate is true, existing transactions will be updated. * TODO: One exception to this is that the abandoned state is cleared under the * assumption that any further notification of a transaction that was considered * abandoned is an indication that it is not safe to be considered abandoned. * Abandoned state should probably be more carefully tracked via different * posInBlock signals or by checking mempool presence when necessary. */ bool AddToWalletIfInvolvingMe(const CTransactionRef& tx, CWalletTx::Confirmation confirm, bool fUpdate) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); /* Mark a transaction (and its in-wallet descendants) as conflicting with a particular block. */ void MarkConflicted(const uint256& hashBlock, int conflicting_height, const uint256& hashTx); /* Mark a transaction's inputs dirty, thus forcing the outputs to be recomputed */ void MarkInputsDirty(const CTransactionRef& tx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); void SyncMetaData(std::pair) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); /* Used by TransactionAddedToMemorypool/BlockConnected/Disconnected/ScanForWalletTransactions. * Should be called with non-zero block_hash and posInBlock if this is for a transaction that is included in a block. */ void SyncTransaction(const CTransactionRef& tx, CWalletTx::Confirmation confirm, bool update_tx = true) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); std::atomic m_wallet_flags{0}; bool SetAddressBookWithDB(WalletBatch& batch, const CTxDestination& address, const std::string& strName, const std::string& strPurpose); //! Unsets a wallet flag and saves it to disk void UnsetWalletFlagWithDB(WalletBatch& batch, uint64_t flag); //! Unset the blank wallet flag and saves it to disk void UnsetBlankWalletFlag(WalletBatch& batch) override; /** Interface for accessing chain state. */ interfaces::Chain* m_chain; /** Wallet location which includes wallet name (see WalletLocation). */ WalletLocation m_location; /** Internal database handle. */ std::unique_ptr database; /** * The following is used to keep track of how far behind the wallet is * from the chain sync, and to allow clients to block on us being caught up. * * Processed hash is a pointer on node's tip and doesn't imply that the wallet * has scanned sequentially all blocks up to this one. */ uint256 m_last_block_processed GUARDED_BY(cs_wallet); /* Height of last block processed is used by wallet to know depth of transactions * without relying on Chain interface beyond asynchronous updates. For safety, we * initialize it to -1. Height is a pointer on node's tip and doesn't imply * that the wallet has scanned sequentially all blocks up to this one. */ int m_last_block_processed_height GUARDED_BY(cs_wallet) = -1; public: /* * Main wallet lock. * This lock protects all the fields added by CWallet. */ mutable CCriticalSection cs_wallet; /** Get database handle used by this wallet. Ideally this function would * not be necessary. */ WalletDatabase& GetDBHandle() { return *database; } WalletDatabase& GetDatabase() override { return *database; } /** * Select a set of coins such that nValueRet >= nTargetValue and at least * all coins from coinControl are selected; Never select unconfirmed coins * if they are not ours */ bool SelectCoins(const std::vector& vAvailableCoins, const CAmount& nTargetValue, std::set& setCoinsRet, CAmount& nValueRet, const CCoinControl& coin_control, CoinSelectionParams& coin_selection_params, bool& bnb_used) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); const WalletLocation& GetLocation() const { return m_location; } /** Get a name for this wallet for logging/debugging purposes. */ const std::string& GetName() const { return m_location.GetName(); } typedef std::map MasterKeyMap; MasterKeyMap mapMasterKeys; unsigned int nMasterKeyMaxID = 0; /** Construct wallet with specified name and database implementation. */ CWallet(interfaces::Chain* chain, const WalletLocation& location, std::unique_ptr database) : fUseCrypto(false), fDecryptionThoroughlyChecked(false), m_chain(chain), m_location(location), database(std::move(database)) { } ~CWallet() { // Should not have slots connected at this point. assert(NotifyUnload.empty()); delete encrypted_batch; encrypted_batch = nullptr; } bool IsCrypted() const { return fUseCrypto; } bool IsLocked() const override; bool Lock(); /** Interface to assert chain access and if successful lock it */ std::unique_ptr LockChain() { return m_chain ? m_chain->lock() : nullptr; } std::map mapWallet GUARDED_BY(cs_wallet); typedef std::multimap TxItems; TxItems wtxOrdered; int64_t nOrderPosNext GUARDED_BY(cs_wallet) = 0; uint64_t nAccountingEntryNumber = 0; std::map mapAddressBook GUARDED_BY(cs_wallet); std::set setLockedCoins GUARDED_BY(cs_wallet); /** Registered interfaces::Chain::Notifications handler. */ std::unique_ptr m_chain_notifications_handler; /** Register the wallet for chain notifications */ void handleNotifications(); /** Interface for accessing chain state. */ interfaces::Chain& chain() const { assert(m_chain); return *m_chain; } const CWalletTx* GetWalletTx(const uint256& hash) const; //! check whether we are allowed to upgrade (or already support) to the named feature bool CanSupportFeature(enum WalletFeature wf) const override EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); return nWalletMaxVersion >= wf; } /** * populate vCoins with vector of available COutputs. */ void AvailableCoins(interfaces::Chain::Lock& locked_chain, std::vector& vCoins, bool fOnlySafe = true, const CCoinControl* coinControl = nullptr, const CAmount& nMinimumAmount = 1, const CAmount& nMaximumAmount = MAX_MONEY, const CAmount& nMinimumSumAmount = MAX_MONEY, const uint64_t nMaximumCount = 0) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); /** * Return list of available coins and locked coins grouped by non-change output address. */ std::map> ListCoins(interfaces::Chain::Lock& locked_chain) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); /** * Find non-change parent output. */ const CTxOut& FindNonChangeParentOutput(const CTransaction& tx, int output) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); /** * Shuffle and select coins until nTargetValue is reached while avoiding * small change; This method is stochastic for some inputs and upon * completion the coin set and corresponding actual target value is * assembled */ bool SelectCoinsMinConf(const CAmount& nTargetValue, const CoinEligibilityFilter& eligibility_filter, std::vector groups, std::set& setCoinsRet, CAmount& nValueRet, const CoinSelectionParams& coin_selection_params, bool& bnb_used) const; bool IsSpent(const uint256& hash, unsigned int n) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); // Whether this or any UTXO with the same CTxDestination has been spent. bool IsUsedDestination(const CTxDestination& dst) const; bool IsUsedDestination(const uint256& hash, unsigned int n) const; void SetUsedDestinationState(WalletBatch& batch, const uint256& hash, unsigned int n, bool used) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); std::vector GroupOutputs(const std::vector& outputs, bool single_coin) const; bool IsLockedCoin(uint256 hash, unsigned int n) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); void LockCoin(const COutPoint& output) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); void UnlockCoin(const COutPoint& output) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); void UnlockAllCoins() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); void ListLockedCoins(std::vector& vOutpts) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); /* * Rescan abort properties */ void AbortRescan() { fAbortRescan = true; } bool IsAbortingRescan() { return fAbortRescan; } bool IsScanning() { return fScanningWallet; } int64_t ScanningDuration() const { return fScanningWallet ? GetTimeMillis() - m_scanning_start : 0; } double ScanningProgress() const { return fScanningWallet ? (double) m_scanning_progress : 0; } //! Upgrade stored CKeyMetadata objects to store key origin info as KeyOriginInfo void UpgradeKeyMetadata() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); bool LoadMinVersion(int nVersion) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); nWalletVersion = nVersion; nWalletMaxVersion = std::max(nWalletMaxVersion, nVersion); return true; } //! Adds a destination data tuple to the store, and saves it to disk bool AddDestData(WalletBatch& batch, const CTxDestination& dest, const std::string& key, const std::string& value) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); //! Erases a destination data tuple in the store and on disk bool EraseDestData(WalletBatch& batch, const CTxDestination& dest, const std::string& key) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); //! Adds a destination data tuple to the store, without saving it to disk void LoadDestData(const CTxDestination& dest, const std::string& key, const std::string& value) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); //! Look up a destination data tuple in the store, return true if found false otherwise bool GetDestData(const CTxDestination& dest, const std::string& key, std::string* value) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); //! Get all destination values matching a prefix. std::vector GetDestValues(const std::string& prefix) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); //! Holds a timestamp at which point the wallet is scheduled (externally) to be relocked. Caller must arrange for actual relocking to occur via Lock(). int64_t nRelockTime = 0; bool Unlock(const SecureString& strWalletPassphrase, bool accept_no_keys = false); bool ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase); bool EncryptWallet(const SecureString& strWalletPassphrase); void GetKeyBirthTimes(interfaces::Chain::Lock& locked_chain, std::map &mapKeyBirth) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); unsigned int ComputeTimeSmart(const CWalletTx& wtx) const; /** * Increment the next transaction order id * @return next transaction order id */ int64_t IncOrderPosNext(WalletBatch *batch = nullptr) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); DBErrors ReorderTransactions(); void MarkDirty(); bool AddToWallet(const CWalletTx& wtxIn, bool fFlushOnClose=true); void LoadToWallet(CWalletTx& wtxIn) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); void TransactionAddedToMempool(const CTransactionRef& tx) override; void BlockConnected(const CBlock& block, const std::vector& vtxConflicted, int height) override; void BlockDisconnected(const CBlock& block, int height) override; void UpdatedBlockTip() override; int64_t RescanFromTime(int64_t startTime, const WalletRescanReserver& reserver, bool update); struct ScanResult { enum { SUCCESS, FAILURE, USER_ABORT } status = SUCCESS; //! Hash and height of most recent block that was successfully scanned. //! Unset if no blocks were scanned due to read errors or the chain //! being empty. uint256 last_scanned_block; Optional last_scanned_height; //! Height of the most recent block that could not be scanned due to //! read errors or pruning. Will be set if status is FAILURE, unset if //! status is SUCCESS, and may or may not be set if status is //! USER_ABORT. uint256 last_failed_block; }; ScanResult ScanForWalletTransactions(const uint256& first_block, const uint256& last_block, const WalletRescanReserver& reserver, bool fUpdate); void TransactionRemovedFromMempool(const CTransactionRef &ptx) override; void ReacceptWalletTransactions() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); void ResendWalletTransactions(); struct Balance { CAmount m_mine_trusted{0}; //!< Trusted, at depth=GetBalance.min_depth or more CAmount m_mine_untrusted_pending{0}; //!< Untrusted, but in mempool (pending) CAmount m_mine_immature{0}; //!< Immature coinbases in the main chain CAmount m_watchonly_trusted{0}; CAmount m_watchonly_untrusted_pending{0}; CAmount m_watchonly_immature{0}; }; Balance GetBalance(int min_depth = 0, bool avoid_reuse = true) const; CAmount GetAvailableBalance(const CCoinControl* coinControl = nullptr) const; OutputType TransactionChangeType(OutputType change_type, const std::vector& vecSend); /** * Insert additional inputs into the transaction by * calling CreateTransaction(); */ bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set& setSubtractFeeFromOutputs, CCoinControl); bool SignTransaction(CMutableTransaction& tx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); /** * Create a new transaction paying the recipients with a set of coins * selected by SelectCoins(); Also create the change output, when needed * @note passing nChangePosInOut as -1 will result in setting a random position */ bool CreateTransaction(interfaces::Chain::Lock& locked_chain, const std::vector& vecSend, CTransactionRef& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, const CCoinControl& coin_control, bool sign = true); /** * Submit the transaction to the node's mempool and then relay to peers. * Should be called after CreateTransaction unless you want to abort * broadcasting the transaction. * * @param tx[in] The transaction to be broadcast. * @param mapValue[in] key-values to be set on the transaction. * @param orderForm[in] BIP 70 / BIP 21 order form details to be set on the transaction. */ void CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::vector> orderForm); bool DummySignTx(CMutableTransaction &txNew, const std::set &txouts, bool use_max_sig = false) const { std::vector v_txouts(txouts.size()); std::copy(txouts.begin(), txouts.end(), v_txouts.begin()); return DummySignTx(txNew, v_txouts, use_max_sig); } bool DummySignTx(CMutableTransaction &txNew, const std::vector &txouts, bool use_max_sig = false) const; bool DummySignInput(CTxIn &tx_in, const CTxOut &txout, bool use_max_sig = false) const; bool ImportScripts(const std::set scripts, int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); bool ImportPrivKeys(const std::map& privkey_map, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); bool ImportPubKeys(const std::vector& ordered_pubkeys, const std::map& pubkey_map, const std::map>& key_origins, const bool add_keypool, const bool internal, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); bool ImportScriptPubKeys(const std::string& label, const std::set& script_pub_keys, const bool have_solving_data, const bool apply_label, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); CFeeRate m_pay_tx_fee{DEFAULT_PAY_TX_FEE}; unsigned int m_confirm_target{DEFAULT_TX_CONFIRM_TARGET}; bool m_spend_zero_conf_change{DEFAULT_SPEND_ZEROCONF_CHANGE}; bool m_signal_rbf{DEFAULT_WALLET_RBF}; bool m_allow_fallback_fee{true}; //!< will be false if -fallbackfee=0 CFeeRate m_min_fee{DEFAULT_TRANSACTION_MINFEE}; //!< Override with -mintxfee /** * If fee estimation does not have enough data to provide estimates, use this fee instead. * Has no effect if not using fee estimation * Override with -fallbackfee */ CFeeRate m_fallback_fee{DEFAULT_FALLBACK_FEE}; CFeeRate m_discard_rate{DEFAULT_DISCARD_FEE}; OutputType m_default_address_type{DEFAULT_ADDRESS_TYPE}; OutputType m_default_change_type{DEFAULT_CHANGE_TYPE}; /** Absolute maximum transaction fee (in satoshis) used by default for the wallet */ CAmount m_default_max_tx_fee{DEFAULT_TRANSACTION_MAXFEE}; size_t KeypoolCountExternalKeys() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); bool TopUpKeyPool(unsigned int kpSize = 0); int64_t GetOldestKeyPoolTime(); std::set> GetAddressGroupings() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); std::map GetAddressBalances(interfaces::Chain::Lock& locked_chain); std::set GetLabelAddresses(const std::string& label) const; bool GetNewDestination(const OutputType type, const std::string label, CTxDestination& dest, std::string& error); bool GetNewChangeDestination(const OutputType type, CTxDestination& dest, std::string& error); isminetype IsMine(const CTxDestination& dest) const; isminetype IsMine(const CScript& script) const; isminetype IsMine(const CTxIn& txin) const; /** * Returns amount of debit if the input matches the * filter, otherwise returns 0 */ CAmount GetDebit(const CTxIn& txin, const isminefilter& filter) const; isminetype IsMine(const CTxOut& txout) const; CAmount GetCredit(const CTxOut& txout, const isminefilter& filter) const; bool IsChange(const CTxOut& txout) const; bool IsChange(const CScript& script) const; CAmount GetChange(const CTxOut& txout) const; bool IsMine(const CTransaction& tx) const; /** should probably be renamed to IsRelevantToMe */ bool IsFromMe(const CTransaction& tx) const; CAmount GetDebit(const CTransaction& tx, const isminefilter& filter) const; /** Returns whether all of the inputs match the filter */ bool IsAllFromMe(const CTransaction& tx, const isminefilter& filter) const; CAmount GetCredit(const CTransaction& tx, const isminefilter& filter) const; CAmount GetChange(const CTransaction& tx) const; void ChainStateFlushed(const CBlockLocator& loc) override; DBErrors LoadWallet(bool& fFirstRunRet); DBErrors ZapWalletTx(std::vector& vWtx); DBErrors ZapSelectTx(std::vector& vHashIn, std::vector& vHashOut) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); bool SetAddressBook(const CTxDestination& address, const std::string& strName, const std::string& purpose); bool DelAddressBook(const CTxDestination& address); unsigned int GetKeyPoolSize() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); //! signify that a particular wallet feature is now used. this may change nWalletVersion and nWalletMaxVersion if those are lower void SetMinVersion(enum WalletFeature, WalletBatch* batch_in = nullptr, bool fExplicit = false) override; //! change which version we're allowed to upgrade to (note that this does not immediately imply upgrading to that format) bool SetMaxVersion(int nVersion); //! get the current wallet format (the oldest client version guaranteed to understand this wallet) int GetVersion() { LOCK(cs_wallet); return nWalletVersion; } //! Get wallet transactions that conflict with given transaction (spend same outputs) std::set GetConflicts(const uint256& txid) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); //! Check if a given transaction has any of its outputs spent by another transaction in the wallet bool HasWalletSpend(const uint256& txid) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); //! Flush wallet (bitdb flush) void Flush(bool shutdown=false); /** Wallet is about to be unloaded */ boost::signals2::signal NotifyUnload; /** * Address book entry changed. * @note called with lock cs_wallet held. */ boost::signals2::signal NotifyAddressBookChanged; /** * Wallet transaction added, removed or updated. * @note called with lock cs_wallet held. */ boost::signals2::signal NotifyTransactionChanged; /** Show progress e.g. for rescan */ boost::signals2::signal ShowProgress; /** Watch-only address added */ boost::signals2::signal NotifyWatchonlyChanged; /** Keypool has new keys */ boost::signals2::signal NotifyCanGetAddressesChanged; /** * Wallet status (encrypted, locked) changed. * Note: Called without locks held. */ boost::signals2::signal NotifyStatusChanged; /** Inquire whether this wallet broadcasts transactions. */ bool GetBroadcastTransactions() const { return fBroadcastTransactions; } /** Set whether this wallet broadcasts transactions. */ void SetBroadcastTransactions(bool broadcast) { fBroadcastTransactions = broadcast; } /** Return whether transaction can be abandoned */ bool TransactionCanBeAbandoned(const uint256& hashTx) const; /* Mark a transaction (and it in-wallet descendants) as abandoned so its inputs may be respent. */ bool AbandonTransaction(const uint256& hashTx); /** Mark a transaction as replaced by another transaction (e.g., BIP 125). */ bool MarkReplaced(const uint256& originalHash, const uint256& newHash); //! Verify wallet naming and perform salvage on the wallet if required static bool Verify(interfaces::Chain& chain, const WalletLocation& location, bool salvage_wallet, std::string& error_string, std::vector& warnings); /* Initializes the wallet, returns a new CWallet instance or a null pointer in case of an error */ static std::shared_ptr CreateWalletFromFile(interfaces::Chain& chain, const WalletLocation& location, std::string& error, std::vector& warnings, uint64_t wallet_creation_flags = 0); /** * Wallet post-init setup * Gives the wallet a chance to register repetitive tasks and complete post-init tasks */ void postInitProcess(); bool BackupWallet(const std::string& strDest); /* Returns true if HD is enabled */ bool IsHDEnabled() const; /* Returns true if the wallet can give out new addresses. This means it has keys in the keypool or can generate new keys */ bool CanGetAddresses(bool internal = false); /** * Blocks until the wallet state is up-to-date to /at least/ the current * chain at the time this function is entered * Obviously holding cs_main/cs_wallet when going into this call may cause * deadlock */ void BlockUntilSyncedToCurrentChain() LOCKS_EXCLUDED(cs_main, cs_wallet); /** set a single wallet flag */ void SetWalletFlag(uint64_t flags); /** Unsets a single wallet flag */ void UnsetWalletFlag(uint64_t flag); /** check if a certain wallet flag is set */ bool IsWalletFlagSet(uint64_t flag) const override; /** overwrite all flags by the given uint64_t returns false if unknown, non-tolerable flags are present */ bool SetWalletFlags(uint64_t overwriteFlags, bool memOnly); /** Returns a bracketed wallet name for displaying in logs, will return [default wallet] if the wallet has no name */ const std::string GetDisplayName() const override { std::string wallet_name = GetName().length() == 0 ? "default wallet" : GetName(); return strprintf("[%s]", wallet_name); }; /** Prepends the wallet name in logging output to ease debugging in multi-wallet use cases */ template void WalletLogPrintf(std::string fmt, Params... parameters) const { LogPrintf(("%s " + fmt).c_str(), GetDisplayName(), parameters...); }; //! Get the ScriptPubKeyMan for a script ScriptPubKeyMan* GetScriptPubKeyMan(const CScript& script) const; //! Get the SigningProvider for a script const SigningProvider* GetSigningProvider(const CScript& script) const; const SigningProvider* GetSigningProvider(const CScript& script, SignatureData& sigdata) const; LegacyScriptPubKeyMan* GetLegacyScriptPubKeyMan() const; const CKeyingMaterial& GetEncryptionKey() const override; bool HasEncryptionKeys() const override; // Temporary LegacyScriptPubKeyMan accessors and aliases. friend class LegacyScriptPubKeyMan; std::unique_ptr m_spk_man = MakeUnique(*this); CCriticalSection& cs_KeyStore = m_spk_man->cs_KeyStore; LegacyScriptPubKeyMan::KeyMap& mapKeys GUARDED_BY(cs_KeyStore) = m_spk_man->mapKeys; LegacyScriptPubKeyMan::ScriptMap& mapScripts GUARDED_BY(cs_KeyStore) = m_spk_man->mapScripts; LegacyScriptPubKeyMan::CryptedKeyMap& mapCryptedKeys GUARDED_BY(cs_KeyStore) = m_spk_man->mapCryptedKeys; LegacyScriptPubKeyMan::WatchOnlySet& setWatchOnly GUARDED_BY(cs_KeyStore) = m_spk_man->setWatchOnly; LegacyScriptPubKeyMan::WatchKeyMap& mapWatchKeys GUARDED_BY(cs_KeyStore) = m_spk_man->mapWatchKeys; WalletBatch*& encrypted_batch GUARDED_BY(cs_wallet) = m_spk_man->encrypted_batch; using CryptedKeyMap = LegacyScriptPubKeyMan::CryptedKeyMap; /** Get last block processed height */ int GetLastBlockHeight() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); assert(m_last_block_processed_height >= 0); return m_last_block_processed_height; }; /** Set last block processed height, currently only use in unit test */ void SetLastBlockProcessed(int block_height, uint256 block_hash) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); m_last_block_processed_height = block_height; m_last_block_processed = block_hash; }; }; /** * Called periodically by the schedule thread. Prompts individual wallets to resend * their transactions. Actual rebroadcast schedule is managed by the wallets themselves. */ void MaybeResendWalletTxs(); /** RAII object to check and reserve a wallet rescan */ class WalletRescanReserver { private: CWallet* m_wallet; bool m_could_reserve; public: explicit WalletRescanReserver(CWallet* w) : m_wallet(w), m_could_reserve(false) {} bool reserve() { assert(!m_could_reserve); std::lock_guard lock(m_wallet->mutexScanning); if (m_wallet->fScanningWallet) { return false; } m_wallet->m_scanning_start = GetTimeMillis(); m_wallet->m_scanning_progress = 0; m_wallet->fScanningWallet = true; m_could_reserve = true; return true; } bool isReserved() const { return (m_could_reserve && m_wallet->fScanningWallet); } ~WalletRescanReserver() { std::lock_guard lock(m_wallet->mutexScanning); if (m_could_reserve) { m_wallet->fScanningWallet = false; } } }; // Calculate the size of the transaction assuming all signatures are max size // Use DummySignatureCreator, which inserts 71 byte signatures everywhere. // NOTE: this requires that all inputs must be in mapWallet (eg the tx should // be IsAllFromMe). int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, bool use_max_sig = false) EXCLUSIVE_LOCKS_REQUIRED(wallet->cs_wallet); int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, const std::vector& txouts, bool use_max_sig = false); #endif // BITCOIN_WALLET_WALLET_H