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1 : : // Copyright (c) 2009-2010 Satoshi Nakamoto
2 : : // Copyright (c) 2009-present The Bitcoin Core developers
3 : : // Distributed under the MIT software license, see the accompanying
4 : : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 : :
6 : : #ifndef BITCOIN_WALLET_WALLET_H
7 : : #define BITCOIN_WALLET_WALLET_H
8 : :
9 : : #include <addresstype.h>
10 : : #include <btcsignals.h>
11 : : #include <consensus/amount.h>
12 : : #include <interfaces/chain.h>
13 : : #include <interfaces/handler.h>
14 : : #include <kernel/cs_main.h>
15 : : #include <logging.h>
16 : : #include <node/types.h>
17 : : #include <outputtype.h>
18 : : #include <policy/feerate.h>
19 : : #include <primitives/transaction.h>
20 : : #include <primitives/transaction_identifier.h>
21 : : #include <script/interpreter.h>
22 : : #include <script/script.h>
23 : : #include <support/allocators/secure.h>
24 : : #include <sync.h>
25 : : #include <tinyformat.h>
26 : : #include <uint256.h>
27 : : #include <util/fs.h>
28 : : #include <util/hasher.h>
29 : : #include <util/result.h>
30 : : #include <util/string.h>
31 : : #include <util/time.h>
32 : : #include <util/ui_change_type.h>
33 : : #include <wallet/crypter.h>
34 : : #include <wallet/db.h>
35 : : #include <wallet/scriptpubkeyman.h>
36 : : #include <wallet/transaction.h>
37 : : #include <wallet/types.h>
38 : : #include <wallet/walletutil.h>
39 : :
40 : : #include <atomic>
41 : : #include <cassert>
42 : : #include <cstddef>
43 : : #include <cstdint>
44 : : #include <functional>
45 : : #include <limits>
46 : : #include <map>
47 : : #include <memory>
48 : : #include <optional>
49 : : #include <set>
50 : : #include <string>
51 : : #include <unordered_map>
52 : : #include <utility>
53 : : #include <vector>
54 : :
55 : : class CKey;
56 : : class CKeyID;
57 : : class CPubKey;
58 : : class Coin;
59 : : class SigningProvider;
60 : : enum class MemPoolRemovalReason;
61 : : enum class SigningResult;
62 : : namespace common {
63 : : enum class PSBTError;
64 : : } // namespace common
65 : : namespace interfaces {
66 : : class Wallet;
67 : : }
68 : : namespace wallet {
69 : : class CWallet;
70 : : class WalletBatch;
71 : : enum class DBErrors : int;
72 : : } // namespace wallet
73 : : struct CBlockLocator;
74 : : struct CExtKey;
75 : : struct FlatSigningProvider;
76 : : struct KeyOriginInfo;
77 : : struct PartiallySignedTransaction;
78 : : struct SignatureData;
79 : :
80 : : using LoadWalletFn = std::function<void(std::unique_ptr<interfaces::Wallet> wallet)>;
81 : :
82 : : struct bilingual_str;
83 : :
84 : : namespace wallet {
85 : : struct WalletContext;
86 : :
87 : : //! Explicitly delete the wallet.
88 : : //! Blocks the current thread until the wallet is destructed.
89 : : void WaitForDeleteWallet(std::shared_ptr<CWallet>&& wallet);
90 : :
91 : : bool AddWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet);
92 : : bool RemoveWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start, std::vector<bilingual_str>& warnings);
93 : : bool RemoveWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start);
94 : : std::vector<std::shared_ptr<CWallet>> GetWallets(WalletContext& context);
95 : : std::shared_ptr<CWallet> GetDefaultWallet(WalletContext& context, size_t& count);
96 : : std::shared_ptr<CWallet> GetWallet(WalletContext& context, const std::string& name);
97 : : std::shared_ptr<CWallet> LoadWallet(WalletContext& context, const std::string& name, std::optional<bool> load_on_start, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings);
98 : : std::shared_ptr<CWallet> CreateWallet(WalletContext& context, const std::string& name, std::optional<bool> load_on_start, DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings);
99 : : std::shared_ptr<CWallet> RestoreWallet(WalletContext& context, const fs::path& backup_file, const std::string& wallet_name, std::optional<bool> load_on_start, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings, bool load_after_restore = true, bool allow_unnamed = false);
100 : : std::unique_ptr<interfaces::Handler> HandleLoadWallet(WalletContext& context, LoadWalletFn load_wallet);
101 : : void NotifyWalletLoaded(WalletContext& context, const std::shared_ptr<CWallet>& wallet);
102 : : std::unique_ptr<WalletDatabase> MakeWalletDatabase(const std::string& name, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error);
103 : :
104 : : //! -fallbackfee default
105 : : static const CAmount DEFAULT_FALLBACK_FEE = 0;
106 : : //! -discardfee default
107 : : static const CAmount DEFAULT_DISCARD_FEE = 10000;
108 : : //! -mintxfee default
109 : : static const CAmount DEFAULT_TRANSACTION_MINFEE = 1000;
110 : : //! -consolidatefeerate default
111 : : static const CAmount DEFAULT_CONSOLIDATE_FEERATE{10000}; // 10 sat/vbyte
112 : : /**
113 : : * maximum fee increase allowed to do partial spend avoidance, even for nodes with this feature disabled by default
114 : : *
115 : : * A value of -1 disables this feature completely.
116 : : * A value of 0 (current default) means to attempt to do partial spend avoidance, and use its results if the fees remain *unchanged*
117 : : * A value > 0 means to do partial spend avoidance if the fee difference against a regular coin selection instance is in the range [0..value].
118 : : */
119 : : static const CAmount DEFAULT_MAX_AVOIDPARTIALSPEND_FEE = 0;
120 : : //! discourage APS fee higher than this amount
121 : : constexpr CAmount HIGH_APS_FEE{COIN / 10000};
122 : : //! minimum recommended increment for replacement txs
123 : : static const CAmount WALLET_INCREMENTAL_RELAY_FEE = 5000;
124 : : //! Default for -spendzeroconfchange
125 : : static const bool DEFAULT_SPEND_ZEROCONF_CHANGE = true;
126 : : //! Default for -walletrejectlongchains
127 : : static const bool DEFAULT_WALLET_REJECT_LONG_CHAINS{true};
128 : : //! -txconfirmtarget default
129 : : static const unsigned int DEFAULT_TX_CONFIRM_TARGET = 6;
130 : : //! -walletrbf default
131 : : static const bool DEFAULT_WALLET_RBF = true;
132 : : static const bool DEFAULT_WALLETBROADCAST = true;
133 : : static const bool DEFAULT_DISABLE_WALLET = false;
134 : : static const bool DEFAULT_WALLETCROSSCHAIN = false;
135 : : //! -maxtxfee default
136 : : constexpr CAmount DEFAULT_TRANSACTION_MAXFEE{COIN / 10};
137 : : //! Discourage users to set fees higher than this amount (in satoshis) per kB
138 : : constexpr CAmount HIGH_TX_FEE_PER_KB{COIN / 100};
139 : : //! -maxtxfee will warn if called with a higher fee than this amount (in satoshis)
140 : : constexpr CAmount HIGH_MAX_TX_FEE{100 * HIGH_TX_FEE_PER_KB};
141 : : //! Pre-calculated constants for input size estimation in *virtual size*
142 : : static constexpr size_t DUMMY_NESTED_P2WPKH_INPUT_SIZE = 91;
143 : :
144 : : class CCoinControl;
145 : :
146 : : //! Default for -addresstype
147 : : constexpr OutputType DEFAULT_ADDRESS_TYPE{OutputType::BECH32};
148 : :
149 : : static constexpr uint64_t KNOWN_WALLET_FLAGS =
150 : : WALLET_FLAG_AVOID_REUSE
151 : : | WALLET_FLAG_BLANK_WALLET
152 : : | WALLET_FLAG_KEY_ORIGIN_METADATA
153 : : | WALLET_FLAG_LAST_HARDENED_XPUB_CACHED
154 : : | WALLET_FLAG_DISABLE_PRIVATE_KEYS
155 : : | WALLET_FLAG_DESCRIPTORS
156 : : | WALLET_FLAG_EXTERNAL_SIGNER;
157 : :
158 : : static constexpr uint64_t MUTABLE_WALLET_FLAGS =
159 : : WALLET_FLAG_AVOID_REUSE;
160 : :
161 : : static const std::map<WalletFlags, std::string> WALLET_FLAG_TO_STRING{
162 : : {WALLET_FLAG_AVOID_REUSE, "avoid_reuse"},
163 : : {WALLET_FLAG_BLANK_WALLET, "blank"},
164 : : {WALLET_FLAG_KEY_ORIGIN_METADATA, "key_origin_metadata"},
165 : : {WALLET_FLAG_LAST_HARDENED_XPUB_CACHED, "last_hardened_xpub_cached"},
166 : : {WALLET_FLAG_DISABLE_PRIVATE_KEYS, "disable_private_keys"},
167 : : {WALLET_FLAG_DESCRIPTORS, "descriptor_wallet"},
168 : : {WALLET_FLAG_EXTERNAL_SIGNER, "external_signer"}
169 : : };
170 : :
171 : : static const std::map<std::string, WalletFlags> STRING_TO_WALLET_FLAG{
172 : : {WALLET_FLAG_TO_STRING.at(WALLET_FLAG_AVOID_REUSE), WALLET_FLAG_AVOID_REUSE},
173 : : {WALLET_FLAG_TO_STRING.at(WALLET_FLAG_BLANK_WALLET), WALLET_FLAG_BLANK_WALLET},
174 : : {WALLET_FLAG_TO_STRING.at(WALLET_FLAG_KEY_ORIGIN_METADATA), WALLET_FLAG_KEY_ORIGIN_METADATA},
175 : : {WALLET_FLAG_TO_STRING.at(WALLET_FLAG_LAST_HARDENED_XPUB_CACHED), WALLET_FLAG_LAST_HARDENED_XPUB_CACHED},
176 : : {WALLET_FLAG_TO_STRING.at(WALLET_FLAG_DISABLE_PRIVATE_KEYS), WALLET_FLAG_DISABLE_PRIVATE_KEYS},
177 : : {WALLET_FLAG_TO_STRING.at(WALLET_FLAG_DESCRIPTORS), WALLET_FLAG_DESCRIPTORS},
178 : : {WALLET_FLAG_TO_STRING.at(WALLET_FLAG_EXTERNAL_SIGNER), WALLET_FLAG_EXTERNAL_SIGNER}
179 : : };
180 : :
181 : : /** A wrapper to reserve an address from a wallet
182 : : *
183 : : * ReserveDestination is used to reserve an address.
184 : : * It is currently only used inside of CreateTransaction.
185 : : *
186 : : * Instantiating a ReserveDestination does not reserve an address. To do so,
187 : : * GetReservedDestination() needs to be called on the object. Once an address has been
188 : : * reserved, call KeepDestination() on the ReserveDestination object to make sure it is not
189 : : * returned. Call ReturnDestination() to return the address so it can be reused (for
190 : : * example, if the address was used in a new transaction
191 : : * and that transaction was not completed and needed to be aborted).
192 : : *
193 : : * If an address is reserved and KeepDestination() is not called, then the address will be
194 : : * returned when the ReserveDestination goes out of scope.
195 : : */
196 : : class ReserveDestination
197 : : {
198 : : protected:
199 : : //! The wallet to reserve from
200 : : const CWallet* const pwallet;
201 : : //! The ScriptPubKeyMan to reserve from. Based on type when GetReservedDestination is called
202 : : ScriptPubKeyMan* m_spk_man{nullptr};
203 : : OutputType const type;
204 : : //! The index of the address's key in the keypool
205 : : int64_t nIndex{-1};
206 : : //! The destination
207 : : CTxDestination address;
208 : : //! Whether this is from the internal (change output) keypool
209 : : bool fInternal{false};
210 : :
211 : : public:
212 : : //! Construct a ReserveDestination object. This does NOT reserve an address yet
213 : 15 : explicit ReserveDestination(CWallet* pwallet, OutputType type)
214 : 15 : : pwallet(pwallet)
215 [ # # ]: 15 : , type(type) { }
216 : :
217 : : ReserveDestination(const ReserveDestination&) = delete;
218 : : ReserveDestination& operator=(const ReserveDestination&) = delete;
219 : :
220 : : //! Destructor. If a key has been reserved and not KeepKey'ed, it will be returned to the keypool
221 : 15 : ~ReserveDestination()
222 : : {
223 : 15 : ReturnDestination();
224 [ # # ]: 15 : }
225 : :
226 : : //! Reserve an address
227 : : util::Result<CTxDestination> GetReservedDestination(bool internal);
228 : : //! Return reserved address
229 : : void ReturnDestination();
230 : : //! Keep the address. Do not return its key to the keypool when this object goes out of scope
231 : : void KeepDestination();
232 : : };
233 : :
234 : : /**
235 : : * Address book data.
236 : : */
237 : 6169 : struct CAddressBookData
238 : : {
239 : : /**
240 : : * Address label which is always nullopt for change addresses. For sending
241 : : * and receiving addresses, it will be set to an arbitrary label string
242 : : * provided by the user, or to "", which is the default label. The presence
243 : : * or absence of a label is used to distinguish change addresses from
244 : : * non-change addresses by wallet transaction listing and fee bumping code.
245 : : */
246 : : std::optional<std::string> label;
247 : :
248 : : /**
249 : : * Address purpose which was originally recorded for payment protocol
250 : : * support but now serves as a cached IsMine value. Wallet code should
251 : : * not rely on this field being set.
252 : : */
253 : : std::optional<AddressPurpose> purpose;
254 : :
255 : : /**
256 : : * Whether coins with this address have previously been spent. Set when the
257 : : * the wallet avoid_reuse option is enabled and this is an IsMine address
258 : : * that has already received funds and spent them. This is used during coin
259 : : * selection to increase privacy by not creating different transactions
260 : : * that spend from the same addresses.
261 : : */
262 : : bool previously_spent{false};
263 : :
264 : : /**
265 : : * Map containing data about previously generated receive requests
266 : : * requesting funds to be sent to this address. Only present for IsMine
267 : : * addresses. Map keys are decimal numbers uniquely identifying each
268 : : * request, and map values are serialized RecentRequestEntry objects
269 : : * containing BIP21 URI information including message and amount.
270 : : */
271 : : std::map<std::string, std::string> receive_requests{};
272 : :
273 : : /** Accessor methods. */
274 [ - - - + ]: 3 : bool IsChange() const { return !label.has_value(); }
[ # # ]
275 [ # # # # ]: 0 : std::string GetLabel() const { return label ? *label : std::string{}; }
276 : 6167 : void SetLabel(std::string name) { label = std::move(name); }
277 : : };
278 : :
279 : 6161 : inline std::string PurposeToString(AddressPurpose p)
280 : : {
281 [ + - - - ]: 6161 : switch(p) {
282 : 6161 : case AddressPurpose::RECEIVE: return "receive";
283 : 0 : case AddressPurpose::SEND: return "send";
284 : 0 : case AddressPurpose::REFUND: return "refund";
285 : : } // no default case, so the compiler can warn about missing cases
286 : 0 : assert(false);
287 : : }
288 : :
289 : 6 : inline std::optional<AddressPurpose> PurposeFromString(std::string_view s)
290 : : {
291 [ + - ]: 6 : if (s == "receive") return AddressPurpose::RECEIVE;
292 [ # # ]: 0 : else if (s == "send") return AddressPurpose::SEND;
293 [ # # ]: 0 : else if (s == "refund") return AddressPurpose::REFUND;
294 : 0 : return {};
295 : : }
296 : :
297 [ + - + - : 48 : struct CRecipient
+ - ][ - -
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[ # # ]
298 : : {
299 : : CTxDestination dest;
300 : : CAmount nAmount;
301 : : bool fSubtractFeeFromAmount;
302 : : };
303 : :
304 : : class WalletRescanReserver; //forward declarations for ScanForWalletTransactions/RescanFromTime
305 : : /**
306 : : * A CWallet maintains a set of transactions and balances, and provides the ability to create new transactions.
307 : : */
308 : : class CWallet final : public WalletStorage, public interfaces::Chain::Notifications
309 : : {
310 : : private:
311 : : CKeyingMaterial vMasterKey GUARDED_BY(cs_wallet);
312 : :
313 : : bool Unlock(const CKeyingMaterial& vMasterKeyIn);
314 : :
315 : : std::atomic<bool> fAbortRescan{false};
316 : : std::atomic<bool> fScanningWallet{false}; // controlled by WalletRescanReserver
317 : : std::atomic<bool> m_scanning_with_passphrase{false};
318 : : std::atomic<SteadyClock::time_point> m_scanning_start{SteadyClock::time_point{}};
319 : : std::atomic<double> m_scanning_progress{0};
320 : : friend class WalletRescanReserver;
321 : :
322 : : /** The next scheduled rebroadcast of wallet transactions. */
323 : : NodeClock::time_point m_next_resend{GetDefaultNextResend()};
324 : : /** Whether this wallet will submit newly created transactions to the node's mempool and
325 : : * prompt rebroadcasts (see ResendWalletTransactions()). */
326 : : bool fBroadcastTransactions = false;
327 : : // Local time that the tip block was received. Used to schedule wallet rebroadcasts.
328 : : std::atomic<int64_t> m_best_block_time {0};
329 : :
330 : : // First created key time. Used to skip blocks prior to this time.
331 : : // 'std::numeric_limits<int64_t>::max()' if wallet is blank.
332 : : std::atomic<int64_t> m_birth_time{std::numeric_limits<int64_t>::max()};
333 : :
334 : : /**
335 : : * Used to keep track of spent outpoints, and
336 : : * detect and report conflicts (double-spends or
337 : : * mutated transactions where the mutant gets mined).
338 : : */
339 : : typedef std::unordered_multimap<COutPoint, Txid, SaltedOutpointHasher> TxSpends;
340 : : TxSpends mapTxSpends GUARDED_BY(cs_wallet);
341 : : void AddToSpends(const COutPoint& outpoint, const Txid& txid) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
342 : : void AddToSpends(const CWalletTx& wtx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
343 : :
344 : : /**
345 : : * Add a transaction to the wallet, or update it. confirm.block_* should
346 : : * be set when the transaction was known to be included in a block. When
347 : : * block_hash.IsNull(), then wallet state is not updated in AddToWallet, but
348 : : * notifications happen and cached balances are marked dirty.
349 : : *
350 : : * If fUpdate is true, existing transactions will be updated.
351 : : * TODO: One exception to this is that the abandoned state is cleared under the
352 : : * assumption that any further notification of a transaction that was considered
353 : : * abandoned is an indication that it is not safe to be considered abandoned.
354 : : * Abandoned state should probably be more carefully tracked via different
355 : : * chain notifications or by checking mempool presence when necessary.
356 : : *
357 : : * Should be called with rescanning_old_block set to true, if the transaction is
358 : : * not discovered in real time, but during a rescan of old blocks.
359 : : */
360 : : bool AddToWalletIfInvolvingMe(const CTransactionRef& tx, const SyncTxState& state, bool fUpdate, bool rescanning_old_block) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
361 : :
362 : : /** Mark a transaction (and its in-wallet descendants) as conflicting with a particular block. */
363 : : void MarkConflicted(const uint256& hashBlock, int conflicting_height, const Txid& hashTx);
364 : :
365 : : enum class TxUpdate { UNCHANGED, CHANGED, NOTIFY_CHANGED };
366 : :
367 : : using TryUpdatingStateFn = std::function<TxUpdate(CWalletTx& wtx)>;
368 : :
369 : : /** Mark a transaction (and its in-wallet descendants) as a particular tx state. */
370 : : void RecursiveUpdateTxState(const Txid& tx_hash, const TryUpdatingStateFn& try_updating_state) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
371 : : void RecursiveUpdateTxState(WalletBatch* batch, const Txid& tx_hash, const TryUpdatingStateFn& try_updating_state) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
372 : :
373 : : /** Mark a transaction's inputs dirty, thus forcing the outputs to be recomputed */
374 : : void MarkInputsDirty(const CTransactionRef& tx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
375 : :
376 : : void SyncMetaData(std::pair<TxSpends::iterator, TxSpends::iterator>) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
377 : :
378 : : bool SyncTransaction(const CTransactionRef& tx, const SyncTxState& state, bool update_tx = true, bool rescanning_old_block = false) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
379 : :
380 : : /** WalletFlags set on this wallet. */
381 : : std::atomic<uint64_t> m_wallet_flags{0};
382 : :
383 : : bool SetAddressBookWithDB(WalletBatch& batch, const CTxDestination& address, const std::string& strName, const std::optional<AddressPurpose>& strPurpose);
384 : :
385 : : //! Unsets a wallet flag and saves it to disk
386 : : void UnsetWalletFlagWithDB(WalletBatch& batch, uint64_t flag);
387 : :
388 : : //! Unset the blank wallet flag and saves it to disk
389 : : void UnsetBlankWalletFlag(WalletBatch& batch) override;
390 : :
391 : : /** Interface for accessing chain state. */
392 : : interfaces::Chain* m_chain;
393 : :
394 : : /** Wallet name: relative directory name or "" for default wallet. */
395 : : std::string m_name;
396 : :
397 : : /** Internal database handle. */
398 : : std::unique_ptr<WalletDatabase> m_database;
399 : :
400 : : /**
401 : : * The following is used to keep track of how far behind the wallet is
402 : : * from the chain sync, and to allow clients to block on us being caught up.
403 : : *
404 : : * Processed hash is a pointer on node's tip and doesn't imply that the wallet
405 : : * has scanned sequentially all blocks up to this one.
406 : : */
407 : : uint256 m_last_block_processed GUARDED_BY(cs_wallet);
408 : :
409 : : /** Height of last block processed is used by wallet to know depth of transactions
410 : : * without relying on Chain interface beyond asynchronous updates. For safety, we
411 : : * initialize it to -1. Height is a pointer on node's tip and doesn't imply
412 : : * that the wallet has scanned sequentially all blocks up to this one.
413 : : */
414 : : int m_last_block_processed_height GUARDED_BY(cs_wallet) = -1;
415 : :
416 : : std::map<OutputType, ScriptPubKeyMan*> m_external_spk_managers;
417 : : std::map<OutputType, ScriptPubKeyMan*> m_internal_spk_managers;
418 : :
419 : : // Indexed by a unique identifier produced by each ScriptPubKeyMan using
420 : : // ScriptPubKeyMan::GetID. In many cases it will be the hash of an internal structure
421 : : std::map<uint256, std::unique_ptr<ScriptPubKeyMan>> m_spk_managers;
422 : :
423 : : // Appends spk managers into the main 'm_spk_managers'.
424 : : // Must be the only method adding data to it.
425 : : void AddScriptPubKeyMan(const uint256& id, std::unique_ptr<ScriptPubKeyMan> spkm_man);
426 : :
427 : : // Same as 'AddActiveScriptPubKeyMan' but designed for use within a batch transaction context
428 : : void AddActiveScriptPubKeyManWithDb(WalletBatch& batch, uint256 id, OutputType type, bool internal);
429 : :
430 : : /** Store wallet flags */
431 : : void SetWalletFlagWithDB(WalletBatch& batch, uint64_t flags);
432 : :
433 : : //! Cache of descriptor ScriptPubKeys used for IsMine. Maps ScriptPubKey to set of spkms
434 : : std::unordered_map<CScript, std::vector<ScriptPubKeyMan*>, SaltedSipHasher> m_cached_spks;
435 : :
436 : : //! Set of both spent and unspent transaction outputs owned by this wallet
437 : : std::unordered_map<COutPoint, WalletTXO, SaltedOutpointHasher> m_txos GUARDED_BY(cs_wallet);
438 : :
439 : : /**
440 : : * Catch wallet up to current chain, scanning new blocks, updating the best
441 : : * block locator and m_last_block_processed, and registering for
442 : : * notifications about new blocks and transactions.
443 : : */
444 : : static bool AttachChain(const std::shared_ptr<CWallet>& wallet, interfaces::Chain& chain, bool rescan_required, bilingual_str& error, std::vector<bilingual_str>& warnings);
445 : :
446 : : static NodeClock::time_point GetDefaultNextResend();
447 : :
448 : : // Update last block processed in memory only
449 : : void SetLastBlockProcessedInMem(int block_height, uint256 block_hash) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
450 : :
451 : : //! Update mempool conflicts for TRUC sibling transactions
452 : : void UpdateTrucSiblingConflicts(const CWalletTx& parent_wtx, const Txid& child_txid, bool add_conflict) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
453 : :
454 : : public:
455 : : /**
456 : : * Main wallet lock.
457 : : * This lock protects all the fields added by CWallet.
458 : : */
459 : : mutable RecursiveMutex cs_wallet;
460 : :
461 : 19530 : WalletDatabase& GetDatabase() const override
462 : : {
463 [ - + ]: 19530 : assert(static_cast<bool>(m_database));
464 : 19530 : return *m_database;
465 : : }
466 : :
467 : : /** Get a name for this wallet for logging/debugging purposes.
468 : : */
469 [ - - - - : 811 : const std::string& GetName() const { return m_name; }
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470 : :
471 : : typedef std::map<unsigned int, CMasterKey> MasterKeyMap;
472 : : MasterKeyMap mapMasterKeys;
473 : : unsigned int nMasterKeyMaxID = 0;
474 : :
475 : : /** Construct wallet with specified name and database implementation. */
476 : 79 : CWallet(interfaces::Chain* chain, const std::string& name, std::unique_ptr<WalletDatabase> database)
477 : 158 : : m_chain(chain),
478 : 158 : m_name(name),
479 [ + - + - : 158 : m_database(std::move(database))
- + + - +
- + - ]
480 : : {
481 : 79 : }
482 : :
483 : 114 : ~CWallet()
484 : 79 : {
485 : : // Should not have slots connected at this point.
486 [ - + ]: 79 : assert(NotifyUnload.empty());
487 : 114 : }
488 : :
489 : : bool IsLocked() const override;
490 : : bool Lock();
491 : :
492 : : /** Interface to assert chain access */
493 [ - - + - ]: 2 : bool HaveChain() const { return m_chain ? true : false; }
494 : :
495 : : /** Map from txid to CWalletTx for all transactions this wallet is
496 : : * interested in, including received and sent transactions. */
497 : : std::unordered_map<Txid, CWalletTx, SaltedTxidHasher> mapWallet GUARDED_BY(cs_wallet);
498 : :
499 : : typedef std::multimap<int64_t, CWalletTx*> TxItems;
500 : : TxItems wtxOrdered;
501 : :
502 : : int64_t nOrderPosNext GUARDED_BY(cs_wallet) = 0;
503 : :
504 : : std::map<CTxDestination, CAddressBookData> m_address_book GUARDED_BY(cs_wallet);
505 : : const CAddressBookData* FindAddressBookEntry(const CTxDestination&, bool allow_change = false) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
506 : :
507 : : /** Set of Coins owned by this wallet that we won't try to spend from. A
508 : : * Coin may be locked if it has already been used to fund a transaction
509 : : * that hasn't confirmed yet. We wouldn't consider the Coin spent already,
510 : : * but also shouldn't try to use it again.
511 : : * bool to track whether this locked coin is persisted to disk.
512 : : */
513 : : std::map<COutPoint, bool> m_locked_coins GUARDED_BY(cs_wallet);
514 : :
515 : : /** Registered interfaces::Chain::Notifications handler. */
516 : : std::unique_ptr<interfaces::Handler> m_chain_notifications_handler;
517 : :
518 : : /** Interface for accessing chain state. */
519 [ - + ]: 464001 : interfaces::Chain& chain() const { assert(m_chain); return *m_chain; }
520 : :
521 : : const CWalletTx* GetWalletTx(const Txid& hash) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
522 : :
523 : : std::set<Txid> GetTxConflicts(const CWalletTx& wtx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
524 : :
525 : 31 : const std::unordered_map<COutPoint, WalletTXO, SaltedOutpointHasher>& GetTXOs() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); return m_txos; };
526 : : std::optional<WalletTXO> GetTXO(const COutPoint& outpoint) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
527 : :
528 : : /** Cache outputs that belong to the wallet from a single transaction */
529 : : void RefreshTXOsFromTx(const CWalletTx& wtx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
530 : : /** Cache outputs that belong to the wallet for all transactions in the wallet */
531 : : void RefreshAllTXOs() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
532 : :
533 : : /**
534 : : * Return depth of transaction in blockchain:
535 : : * <0 : conflicts with a transaction this deep in the blockchain
536 : : * 0 : in memory pool, waiting to be included in a block
537 : : * >=1 : this many blocks deep in the main chain
538 : : *
539 : : * Preconditions: it is only valid to call this function when the wallet is
540 : : * online and the block index is loaded. So this cannot be called by
541 : : * bitcoin-wallet tool code or by wallet migration code. If this is called
542 : : * without the wallet being online, it won't be able able to determine the
543 : : * the height of the last block processed, or the heights of blocks
544 : : * referenced in transaction, and might cause assert failures.
545 : : */
546 : : int GetTxDepthInMainChain(const CWalletTx& wtx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
547 : :
548 : : /**
549 : : * @return number of blocks to maturity for this transaction:
550 : : * 0 : is not a coinbase transaction, or is a mature coinbase transaction
551 : : * >0 : is a coinbase transaction which matures in this many blocks
552 : : */
553 : : int GetTxBlocksToMaturity(const CWalletTx& wtx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
554 : : bool IsTxImmatureCoinBase(const CWalletTx& wtx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
555 : :
556 : : bool IsSpent(const COutPoint& outpoint) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
557 : :
558 : : // Whether this or any known scriptPubKey with the same single key has been spent.
559 : : bool IsSpentKey(const CScript& scriptPubKey) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
560 : : void SetSpentKeyState(WalletBatch& batch, const Txid& hash, unsigned int n, bool used, std::set<CTxDestination>& tx_destinations) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
561 : :
562 : : /** Display address on an external signer. */
563 : : util::Result<void> DisplayAddress(const CTxDestination& dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
564 : :
565 : : bool IsLockedCoin(const COutPoint& output) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
566 : : void LoadLockedCoin(const COutPoint& coin, bool persistent) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
567 : : bool LockCoin(const COutPoint& output, bool persist) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
568 : : bool UnlockCoin(const COutPoint& output) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
569 : : bool UnlockAllCoins() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
570 : : void ListLockedCoins(std::vector<COutPoint>& vOutpts) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
571 : :
572 : : /*
573 : : * Rescan abort properties
574 : : */
575 [ # # ]: 0 : void AbortRescan() { fAbortRescan = true; }
576 [ # # ]: 0 : bool IsAbortingRescan() const { return fAbortRescan; }
577 [ # # ]: 0 : bool IsScanning() const { return fScanningWallet; }
578 [ # # # # : 0 : bool IsScanningWithPassphrase() const { return m_scanning_with_passphrase; }
# # ]
579 [ # # ]: 0 : SteadyClock::duration ScanningDuration() const { return fScanningWallet ? SteadyClock::now() - m_scanning_start.load() : SteadyClock::duration{}; }
580 [ # # ]: 0 : double ScanningProgress() const { return fScanningWallet ? (double) m_scanning_progress : 0; }
581 : :
582 : : //! Upgrade DescriptorCaches
583 : : void UpgradeDescriptorCache() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
584 : :
585 : : //! Marks destination as previously spent.
586 : : void LoadAddressPreviouslySpent(const CTxDestination& dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
587 : : //! Appends payment request to destination.
588 : : void LoadAddressReceiveRequest(const CTxDestination& dest, const std::string& id, const std::string& request) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
589 : :
590 : : //! Holds a timestamp at which point the wallet is scheduled (externally) to be relocked. Caller must arrange for actual relocking to occur via Lock().
591 : : int64_t nRelockTime GUARDED_BY(cs_wallet){0};
592 : :
593 : : // Used to prevent concurrent calls to walletpassphrase RPC.
594 : : Mutex m_unlock_mutex;
595 : : // Used to prevent deleting the passphrase from memory when it is still in use.
596 : : RecursiveMutex m_relock_mutex;
597 : :
598 : : bool Unlock(const SecureString& strWalletPassphrase);
599 : : bool ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase);
600 : : bool EncryptWallet(const SecureString& strWalletPassphrase);
601 : :
602 : : unsigned int ComputeTimeSmart(const CWalletTx& wtx, bool rescanning_old_block) const;
603 : :
604 : : /**
605 : : * Increment the next transaction order id
606 : : * @return next transaction order id
607 : : */
608 : : int64_t IncOrderPosNext(WalletBatch *batch = nullptr) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
609 : : DBErrors ReorderTransactions();
610 : :
611 : : void MarkDirty();
612 : :
613 : : //! Callback for updating transaction metadata in mapWallet.
614 : : //!
615 : : //! @param wtx - reference to mapWallet transaction to update
616 : : //! @param new_tx - true if wtx is newly inserted, false if it previously existed
617 : : //!
618 : : //! @return true if wtx is changed and needs to be saved to disk, otherwise false
619 : : using UpdateWalletTxFn = std::function<bool(CWalletTx& wtx, bool new_tx)>;
620 : :
621 : : /**
622 : : * Add the transaction to the wallet, wrapping it up inside a CWalletTx
623 : : * @return the recently added wtx pointer or nullptr if there was a db write error.
624 : : */
625 : : CWalletTx* AddToWallet(CTransactionRef tx, const TxState& state, const UpdateWalletTxFn& update_wtx=nullptr, bool rescanning_old_block = false);
626 : : bool LoadToWallet(const Txid& hash, const UpdateWalletTxFn& fill_wtx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
627 : : void transactionAddedToMempool(const CTransactionRef& tx) override;
628 : : void blockConnected(const kernel::ChainstateRole& role, const interfaces::BlockInfo& block) override;
629 : : void blockDisconnected(const interfaces::BlockInfo& block) override;
630 : : void updatedBlockTip() override;
631 : : int64_t RescanFromTime(int64_t startTime, const WalletRescanReserver& reserver, bool update);
632 : :
633 : : struct ScanResult {
634 : : enum { SUCCESS, FAILURE, USER_ABORT } status = SUCCESS;
635 : :
636 : : //! Hash and height of most recent block that was successfully scanned.
637 : : //! Unset if no blocks were scanned due to read errors or the chain
638 : : //! being empty.
639 : : uint256 last_scanned_block;
640 : : std::optional<int> last_scanned_height;
641 : :
642 : : //! Height of the most recent block that could not be scanned due to
643 : : //! read errors or pruning. Will be set if status is FAILURE, unset if
644 : : //! status is SUCCESS, and may or may not be set if status is
645 : : //! USER_ABORT.
646 : : uint256 last_failed_block;
647 : : };
648 : : ScanResult ScanForWalletTransactions(const uint256& start_block, int start_height, std::optional<int> max_height, const WalletRescanReserver& reserver, bool fUpdate, bool save_progress);
649 : : void transactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason) override;
650 : : /** Set the next time this wallet should resend transactions to 12-36 hours from now, ~1 day on average. */
651 [ # # ]: 0 : void SetNextResend() { m_next_resend = GetDefaultNextResend(); }
652 : : /** Return true if all conditions for periodically resending transactions are met. */
653 : : bool ShouldResend() const;
654 : : void ResubmitWalletTransactions(node::TxBroadcast broadcast_method, bool force);
655 : :
656 : : OutputType TransactionChangeType(const std::optional<OutputType>& change_type, const std::vector<CRecipient>& vecSend) const;
657 : :
658 : : /** Fetch the inputs and sign with SIGHASH_ALL. */
659 : : bool SignTransaction(CMutableTransaction& tx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
660 : : /** Sign the tx given the input coins and sighash. */
661 : : bool SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, bilingual_str>& input_errors) const;
662 : : SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const;
663 : :
664 : : /**
665 : : * Fills out a PSBT with information from the wallet. Fills in UTXOs if we have
666 : : * them. Tries to sign if sign=true. Sets `complete` if the PSBT is now complete
667 : : * (i.e. has all required signatures or signature-parts, and is ready to
668 : : * finalize.) Sets `error` and returns false if something goes wrong.
669 : : *
670 : : * @param[in] psbtx PartiallySignedTransaction to fill in
671 : : * @param[out] complete indicates whether the PSBT is now complete
672 : : * @param[in] sighash_type the sighash type to use when signing (if PSBT does not specify)
673 : : * @param[in] sign whether to sign or not
674 : : * @param[in] bip32derivs whether to fill in bip32 derivation information if available
675 : : * @param[out] n_signed the number of inputs signed by this wallet
676 : : * @param[in] finalize whether to create the final scriptSig or scriptWitness if possible
677 : : * return error
678 : : */
679 : : std::optional<common::PSBTError> FillPSBT(PartiallySignedTransaction& psbtx,
680 : : bool& complete,
681 : : std::optional<int> sighash_type = std::nullopt,
682 : : bool sign = true,
683 : : bool bip32derivs = true,
684 : : size_t* n_signed = nullptr,
685 : : bool finalize = true) const;
686 : :
687 : : /**
688 : : * Submit the transaction to the node's mempool and then relay to peers.
689 : : * Should be called after CreateTransaction unless you want to abort
690 : : * broadcasting the transaction.
691 : : *
692 : : * @param[in] tx The transaction to be broadcast.
693 : : * @param[in] mapValue key-values to be set on the transaction.
694 : : * @param[in] orderForm BIP 70 / BIP 21 order form details to be set on the transaction.
695 : : */
696 : : void CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::vector<std::pair<std::string, std::string>> orderForm);
697 : :
698 : : /** Pass this transaction to node for optional mempool insertion and relay to peers. */
699 : : bool SubmitTxMemoryPoolAndRelay(CWalletTx& wtx, std::string& err_string, node::TxBroadcast broadcast_method) const
700 : : EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
701 : :
702 : : /** Updates wallet birth time if 'time' is below it */
703 : : void MaybeUpdateBirthTime(int64_t time);
704 : :
705 : : unsigned int m_confirm_target{DEFAULT_TX_CONFIRM_TARGET};
706 : : /** Allow Coin Selection to pick unconfirmed UTXOs that were sent from our own wallet if it
707 : : * cannot fund the transaction otherwise. */
708 : : bool m_spend_zero_conf_change{DEFAULT_SPEND_ZEROCONF_CHANGE};
709 : : bool m_signal_rbf{DEFAULT_WALLET_RBF};
710 : : bool m_allow_fallback_fee{true}; //!< will be false if -fallbackfee=0
711 : : CFeeRate m_min_fee{DEFAULT_TRANSACTION_MINFEE};
712 : : /**
713 : : * If fee estimation does not have enough data to provide estimates, use this fee instead.
714 : : * Has no effect if not using fee estimation
715 : : * Override with -fallbackfee
716 : : */
717 : : CFeeRate m_fallback_fee{DEFAULT_FALLBACK_FEE};
718 : :
719 : : /** If the cost to spend a change output at this feerate is greater than the value of the
720 : : * output itself, just drop it to fees. */
721 : : CFeeRate m_discard_rate{DEFAULT_DISCARD_FEE};
722 : :
723 : : /** When the actual feerate is less than the consolidate feerate, we will tend to make transactions which
724 : : * consolidate inputs. When the actual feerate is greater than the consolidate feerate, we will tend to make
725 : : * transactions which have the lowest fees.
726 : : */
727 : : CFeeRate m_consolidate_feerate{DEFAULT_CONSOLIDATE_FEERATE};
728 : :
729 : : /** The maximum fee amount we're willing to pay to prioritize partial spend avoidance. */
730 : : CAmount m_max_aps_fee{DEFAULT_MAX_AVOIDPARTIALSPEND_FEE}; //!< note: this is absolute fee, not fee rate
731 : : OutputType m_default_address_type{DEFAULT_ADDRESS_TYPE};
732 : : /**
733 : : * Default output type for change outputs. When unset, automatically choose type
734 : : * based on address type setting and the types other of non-change outputs
735 : : * (see -changetype option documentation and implementation in
736 : : * CWallet::TransactionChangeType for details).
737 : : */
738 : : std::optional<OutputType> m_default_change_type{};
739 : : /** Absolute maximum transaction fee (in satoshis) used by default for the wallet */
740 : : CAmount m_default_max_tx_fee{DEFAULT_TRANSACTION_MAXFEE};
741 : :
742 : : /** Number of pre-generated keys/scripts by each spkm (part of the look-ahead process, used to detect payments) */
743 : : int64_t m_keypool_size{DEFAULT_KEYPOOL_SIZE};
744 : :
745 : : /** Notify external script when a wallet transaction comes in or is updated (handled by -walletnotify) */
746 : : std::string m_notify_tx_changed_script;
747 : :
748 : : size_t KeypoolCountExternalKeys() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
749 : : bool TopUpKeyPool(unsigned int kpSize = 0);
750 : :
751 : : // Filter struct for 'ListAddrBookAddresses'
752 [ # # ]: 0 : struct AddrBookFilter {
753 : : // Fetch addresses with the provided label
754 : : std::optional<std::string> m_op_label{std::nullopt};
755 : : // Don't include change addresses by default
756 : : bool ignore_change{true};
757 : : };
758 : :
759 : : /**
760 : : * Filter and retrieve destinations stored in the addressbook
761 : : */
762 : : std::vector<CTxDestination> ListAddrBookAddresses(const std::optional<AddrBookFilter>& filter) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
763 : :
764 : : /**
765 : : * Retrieve all the known labels in the address book
766 : : */
767 : : std::set<std::string> ListAddrBookLabels(std::optional<AddressPurpose> purpose) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
768 : :
769 : : /**
770 : : * Walk-through the address book entries.
771 : : * Stops when the provided 'ListAddrBookFunc' returns false.
772 : : */
773 : : using ListAddrBookFunc = std::function<void(const CTxDestination& dest, const std::string& label, bool is_change, const std::optional<AddressPurpose> purpose)>;
774 : : void ForEachAddrBookEntry(const ListAddrBookFunc& func) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
775 : :
776 : : /**
777 : : * Marks all outputs in each one of the destinations dirty, so their cache is
778 : : * reset and does not return outdated information.
779 : : */
780 : : void MarkDestinationsDirty(const std::set<CTxDestination>& destinations) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
781 : :
782 : : util::Result<CTxDestination> GetNewDestination(OutputType type, const std::string& label);
783 : : util::Result<CTxDestination> GetNewChangeDestination(OutputType type);
784 : :
785 : : bool IsMine(const CTxDestination& dest) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
786 : : bool IsMine(const CScript& script) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
787 : : /** Returns amount of debit, i.e. the amount leaving this wallet due to this input */
788 : : CAmount GetDebit(const CTxIn& txin) const;
789 : : bool IsMine(const CTxOut& txout) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
790 : : bool IsMine(const CTransaction& tx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
791 : : bool IsMine(const COutPoint& outpoint) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
792 : : /** should probably be renamed to IsRelevantToMe */
793 : : bool IsFromMe(const CTransaction& tx) const;
794 : : CAmount GetDebit(const CTransaction& tx) const;
795 : :
796 : : DBErrors PopulateWalletFromDB(bilingual_str& error, std::vector<bilingual_str>& warnings);
797 : :
798 : : /** Erases the provided transactions from the wallet. */
799 : : util::Result<void> RemoveTxs(std::vector<Txid>& txs_to_remove) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
800 : : util::Result<void> RemoveTxs(WalletBatch& batch, std::vector<Txid>& txs_to_remove) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
801 : :
802 : : bool SetAddressBook(const CTxDestination& address, const std::string& strName, const std::optional<AddressPurpose>& purpose);
803 : :
804 : : bool DelAddressBook(const CTxDestination& address);
805 : : bool DelAddressBookWithDB(WalletBatch& batch, const CTxDestination& address);
806 : :
807 : : bool IsAddressPreviouslySpent(const CTxDestination& dest) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
808 : : bool SetAddressPreviouslySpent(WalletBatch& batch, const CTxDestination& dest, bool used) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
809 : :
810 : : std::vector<std::string> GetAddressReceiveRequests() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
811 : : bool SetAddressReceiveRequest(WalletBatch& batch, const CTxDestination& dest, const std::string& id, const std::string& value) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
812 : : bool EraseAddressReceiveRequest(WalletBatch& batch, const CTxDestination& dest, const std::string& id) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
813 : :
814 : : unsigned int GetKeyPoolSize() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
815 : :
816 : : //! Get wallet transactions that conflict with given transaction (spend same outputs)
817 : : std::set<Txid> GetConflicts(const Txid& txid) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
818 : :
819 : : //! Check if a given transaction has any of its outputs spent by another transaction in the wallet
820 : : bool HasWalletSpend(const CTransactionRef& tx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
821 : :
822 : : //! Close wallet database
823 : : void Close();
824 : :
825 : : /** Wallet is about to be unloaded */
826 : : btcsignals::signal<void ()> NotifyUnload;
827 : :
828 : : /**
829 : : * Address book entry changed.
830 : : * @note called without lock cs_wallet held.
831 : : */
832 : : btcsignals::signal<void(const CTxDestination& address,
833 : : const std::string& label, bool isMine,
834 : : AddressPurpose purpose, ChangeType status)>
835 : : NotifyAddressBookChanged;
836 : :
837 : : /**
838 : : * Wallet transaction added, removed or updated.
839 : : * @note called with lock cs_wallet held.
840 : : */
841 : : btcsignals::signal<void(const Txid& hashTx, ChangeType status)> NotifyTransactionChanged;
842 : :
843 : : /** Show progress e.g. for rescan */
844 : : btcsignals::signal<void (const std::string &title, int nProgress)> ShowProgress;
845 : :
846 : : /** Keypool has new keys */
847 : : btcsignals::signal<void ()> NotifyCanGetAddressesChanged;
848 : :
849 : : /**
850 : : * Wallet status (encrypted, locked) changed.
851 : : * Note: Called without locks held.
852 : : */
853 : : btcsignals::signal<void (CWallet* wallet)> NotifyStatusChanged;
854 : :
855 : : /** Inquire whether this wallet broadcasts transactions. */
856 [ + - ]: 3 : bool GetBroadcastTransactions() const { return fBroadcastTransactions; }
857 : : /** Set whether this wallet broadcasts transactions. */
858 : 5 : void SetBroadcastTransactions(bool broadcast) { fBroadcastTransactions = broadcast; }
859 : :
860 : : /** Return whether transaction can be abandoned */
861 : : bool TransactionCanBeAbandoned(const Txid& hashTx) const;
862 : :
863 : : /* Mark a transaction (and it in-wallet descendants) as abandoned so its inputs may be respent. */
864 : : bool AbandonTransaction(const Txid& hashTx);
865 : : bool AbandonTransaction(CWalletTx& tx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
866 : :
867 : : /** Mark a transaction as replaced by another transaction. */
868 : : bool MarkReplaced(const Txid& originalHash, const Txid& newHash);
869 : :
870 : : static bool LoadWalletArgs(std::shared_ptr<CWallet> wallet, const WalletContext& context, bilingual_str& error, std::vector<bilingual_str>& warnings);
871 : :
872 : : /* Initializes, creates and returns a new CWallet; returns a null pointer in case of an error */
873 : : static std::shared_ptr<CWallet> CreateNew(WalletContext& context, const std::string& name, std::unique_ptr<WalletDatabase> database, uint64_t wallet_creation_flags, bilingual_str& error, std::vector<bilingual_str>& warnings);
874 : :
875 : : /* Initializes, loads, and returns a CWallet from an existing wallet; returns a null pointer in case of an error */
876 : : static std::shared_ptr<CWallet> LoadExisting(WalletContext& context, const std::string& name, std::unique_ptr<WalletDatabase> database, bilingual_str& error, std::vector<bilingual_str>& warnings);
877 : :
878 : : /**
879 : : * Wallet post-init setup
880 : : * Gives the wallet a chance to register repetitive tasks and complete post-init tasks
881 : : */
882 : : void postInitProcess();
883 : :
884 : : bool BackupWallet(const std::string& strDest) const;
885 : :
886 : : /* Returns true if HD is enabled */
887 : : bool IsHDEnabled() const;
888 : :
889 : : /* Returns true if the wallet can give out new addresses. This means it has keys in the keypool or can generate new keys */
890 : : bool CanGetAddresses(bool internal = false) const;
891 : :
892 : : /* Returns the time of the first created key or, in case of an import, it could be the time of the first received transaction */
893 [ # # ]: 0 : int64_t GetBirthTime() const { return m_birth_time; }
894 : :
895 : : /**
896 : : * Blocks until the wallet state is up-to-date to /at least/ the current
897 : : * chain at the time this function is entered
898 : : * Obviously holding cs_main/cs_wallet when going into this call may cause
899 : : * deadlock
900 : : */
901 : : void BlockUntilSyncedToCurrentChain() const LOCKS_EXCLUDED(::cs_main) EXCLUSIVE_LOCKS_REQUIRED(!cs_wallet);
902 : :
903 : : /** set a single wallet flag */
904 : : void SetWalletFlag(uint64_t flags);
905 : :
906 : : /** Unsets a single wallet flag */
907 : : void UnsetWalletFlag(uint64_t flag);
908 : :
909 : : /** check if a certain wallet flag is set */
910 : : bool IsWalletFlagSet(uint64_t flag) const override;
911 : :
912 : : /** overwrite all flags by the given uint64_t
913 : : flags must be uninitialised (or 0)
914 : : only known flags may be present */
915 : : void InitWalletFlags(uint64_t flags);
916 : : /** Loads the flags into the wallet. (used by LoadWallet) */
917 : : bool LoadWalletFlags(uint64_t flags);
918 : : //! Retrieve all of the wallet's flags
919 : : uint64_t GetWalletFlags() const;
920 : :
921 : : /** Return wallet name for use in logs, will return "default wallet" if the wallet has no name. */
922 : 800 : std::string LogName() const override
923 : : {
924 [ - + ]: 800 : std::string name{GetName()};
925 [ + + + - ]: 816 : return name.empty() ? "default wallet" : name;
926 : 800 : };
927 : :
928 : : /** Return wallet name for display, like LogName() but translates "default wallet" string. */
929 : 31 : std::string DisplayName() const
930 : : {
931 [ - + ]: 31 : std::string name{GetName()};
932 [ + - + - ]: 31 : return name.empty() ? _("default wallet") : name;
933 : 31 : };
934 : :
935 : : /** Prepends the wallet name in logging output to ease debugging in multi-wallet use cases */
936 : : template <typename... Params>
937 : 800 : void WalletLogPrintf(util::ConstevalFormatString<sizeof...(Params)> wallet_fmt, const Params&... params) const
938 : : {
939 [ + - + - ]: 1600 : LogInfo("[%s] %s", LogName(), tfm::format(wallet_fmt, params...));
940 : 800 : };
941 : :
942 : 2 : void LogStats() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet)
943 : : {
944 : 2 : AssertLockHeld(cs_wallet);
945 : 2 : WalletLogPrintf("setKeyPool.size() = %u\n", GetKeyPoolSize());
946 : 2 : WalletLogPrintf("mapWallet.size() = %u\n", mapWallet.size());
947 : 2 : WalletLogPrintf("m_address_book.size() = %u\n", m_address_book.size());
948 : 2 : };
949 : :
950 : : //! Returns all unique ScriptPubKeyMans in m_internal_spk_managers and m_external_spk_managers
951 : : std::set<ScriptPubKeyMan*> GetActiveScriptPubKeyMans() const;
952 : : bool IsActiveScriptPubKeyMan(const ScriptPubKeyMan& spkm) const;
953 : :
954 : : //! Returns all unique ScriptPubKeyMans
955 : : std::set<ScriptPubKeyMan*> GetAllScriptPubKeyMans() const;
956 : :
957 : : //! Get the ScriptPubKeyMan for the given OutputType and internal/external chain.
958 : : ScriptPubKeyMan* GetScriptPubKeyMan(const OutputType& type, bool internal) const;
959 : :
960 : : //! Get all the ScriptPubKeyMans for a script
961 : : std::set<ScriptPubKeyMan*> GetScriptPubKeyMans(const CScript& script) const;
962 : : //! Get the ScriptPubKeyMan by id
963 : : ScriptPubKeyMan* GetScriptPubKeyMan(const uint256& id) const;
964 : :
965 : : //! Get the SigningProvider for a script
966 : : std::unique_ptr<SigningProvider> GetSolvingProvider(const CScript& script) const;
967 : : std::unique_ptr<SigningProvider> GetSolvingProvider(const CScript& script, SignatureData& sigdata) const;
968 : :
969 : : //! Get the wallet descriptors for a script.
970 : : std::vector<WalletDescriptor> GetWalletDescriptors(const CScript& script) const;
971 : :
972 : : //! Get the LegacyScriptPubKeyMan which is used for all types, internal, and external.
973 : : LegacyDataSPKM* GetLegacyDataSPKM() const;
974 : : LegacyDataSPKM* GetOrCreateLegacyDataSPKM();
975 : :
976 : : //! Make a Legacy(Data)SPKM and set it for all types, internal, and external.
977 : : void SetupLegacyScriptPubKeyMan();
978 : :
979 : : bool WithEncryptionKey(std::function<bool (const CKeyingMaterial&)> cb) const override;
980 : :
981 : : bool HasEncryptionKeys() const override;
982 : : bool HaveCryptedKeys() const;
983 : :
984 : : /** Get last block processed height */
985 : 5959 : int GetLastBlockHeight() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet)
986 : : {
987 : 5959 : AssertLockHeld(cs_wallet);
988 [ - + ]: 5959 : assert(m_last_block_processed_height >= 0);
989 : 5959 : return m_last_block_processed_height;
990 : : };
991 : 434 : uint256 GetLastBlockHash() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet)
992 : : {
993 : 434 : AssertLockHeld(cs_wallet);
994 [ - + ]: 434 : assert(m_last_block_processed_height >= 0);
995 : 434 : return m_last_block_processed;
996 : : }
997 : : /** Set last block processed height, and write to database */
998 : : void SetLastBlockProcessed(int block_height, uint256 block_hash) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
999 : : /** Write the current best block to database */
1000 : : void WriteBestBlock() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1001 : :
1002 : : //! Connect the signals from ScriptPubKeyMans to the signals in CWallet
1003 : : void ConnectScriptPubKeyManNotifiers();
1004 : :
1005 : : //! Instantiate a descriptor ScriptPubKeyMan from the WalletDescriptor and load it
1006 : : DescriptorScriptPubKeyMan& LoadDescriptorScriptPubKeyMan(uint256 id, WalletDescriptor& desc);
1007 : :
1008 : : //! Adds the active ScriptPubKeyMan for the specified type and internal. Writes it to the wallet file
1009 : : //! @param[in] id The unique id for the ScriptPubKeyMan
1010 : : //! @param[in] type The OutputType this ScriptPubKeyMan provides addresses for
1011 : : //! @param[in] internal Whether this ScriptPubKeyMan provides change addresses
1012 : : void AddActiveScriptPubKeyMan(uint256 id, OutputType type, bool internal);
1013 : :
1014 : : //! Loads an active ScriptPubKeyMan for the specified type and internal. (used by LoadWallet)
1015 : : //! @param[in] id The unique id for the ScriptPubKeyMan
1016 : : //! @param[in] type The OutputType this ScriptPubKeyMan provides addresses for
1017 : : //! @param[in] internal Whether this ScriptPubKeyMan provides change addresses
1018 : : void LoadActiveScriptPubKeyMan(uint256 id, OutputType type, bool internal);
1019 : :
1020 : : //! Remove specified ScriptPubKeyMan from set of active SPK managers. Writes the change to the wallet file.
1021 : : //! @param[in] id The unique id for the ScriptPubKeyMan
1022 : : //! @param[in] type The OutputType this ScriptPubKeyMan provides addresses for
1023 : : //! @param[in] internal Whether this ScriptPubKeyMan provides change addresses
1024 : : void DeactivateScriptPubKeyMan(uint256 id, OutputType type, bool internal);
1025 : :
1026 : : //! Create new DescriptorScriptPubKeyMan and add it to the wallet
1027 : : DescriptorScriptPubKeyMan& SetupDescriptorScriptPubKeyMan(WalletBatch& batch, const CExtKey& master_key, const OutputType& output_type, bool internal) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1028 : : //! Create new DescriptorScriptPubKeyMans and add them to the wallet
1029 : : void SetupDescriptorScriptPubKeyMans(WalletBatch& batch, const CExtKey& master_key) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1030 : : void SetupDescriptorScriptPubKeyMans() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1031 : :
1032 : : //! Create new seed and default DescriptorScriptPubKeyMans for this wallet
1033 : : void SetupOwnDescriptorScriptPubKeyMans(WalletBatch& batch) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1034 : :
1035 : : //! Return the DescriptorScriptPubKeyMan for a WalletDescriptor if it is already in the wallet
1036 : : DescriptorScriptPubKeyMan* GetDescriptorScriptPubKeyMan(const WalletDescriptor& desc) const;
1037 : :
1038 : : //! Returns whether the provided ScriptPubKeyMan is internal
1039 : : //! @param[in] spk_man The ScriptPubKeyMan to test
1040 : : //! @return contains value only for active DescriptorScriptPubKeyMan, otherwise undefined
1041 : : std::optional<bool> IsInternalScriptPubKeyMan(ScriptPubKeyMan* spk_man) const;
1042 : :
1043 : : //! Add a descriptor to the wallet, return a ScriptPubKeyMan & associated output type
1044 : : util::Result<std::reference_wrapper<DescriptorScriptPubKeyMan>> AddWalletDescriptor(WalletDescriptor& desc, const FlatSigningProvider& signing_provider, const std::string& label, bool internal) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1045 : :
1046 : : /** Move all records from the BDB database to a new SQLite database for storage.
1047 : : * The original BDB file will be deleted and replaced with a new SQLite file.
1048 : : * A backup is not created.
1049 : : * May crash if something unexpected happens in the filesystem.
1050 : : */
1051 : : bool MigrateToSQLite(bilingual_str& error) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1052 : :
1053 : : //! Get all of the descriptors from a legacy wallet
1054 : : std::optional<MigrationData> GetDescriptorsForLegacy(bilingual_str& error) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1055 : :
1056 : : //! Adds the ScriptPubKeyMans given in MigrationData to this wallet, removes LegacyScriptPubKeyMan,
1057 : : //! and where needed, moves tx and address book entries to watchonly_wallet or solvable_wallet
1058 : : util::Result<void> ApplyMigrationData(WalletBatch& local_wallet_batch, MigrationData& data) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1059 : :
1060 : : //! Whether the (external) signer performs R-value signature grinding
1061 : : bool CanGrindR() const;
1062 : :
1063 : : //! Add scriptPubKeys for this ScriptPubKeyMan into the scriptPubKey cache
1064 : : void CacheNewScriptPubKeys(const std::set<CScript>& spks, ScriptPubKeyMan* spkm);
1065 : :
1066 : : void TopUpCallback(const std::set<CScript>& spks, ScriptPubKeyMan* spkm) override;
1067 : :
1068 : : //! Retrieve the xpubs in use by the active descriptors
1069 : : std::set<CExtPubKey> GetActiveHDPubKeys() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
1070 : :
1071 : : //! Find the private key for the given key id from the wallet's descriptors, if available
1072 : : //! Returns nullopt when no descriptor has the key or if the wallet is locked.
1073 : : std::optional<CKey> GetKey(const CKeyID& keyid) const;
1074 : :
1075 : : //! Disconnect chain notifications and wait for all notifications to be processed
1076 : : void DisconnectChainNotifications();
1077 : : };
1078 : :
1079 : : /**
1080 : : * Called periodically by the schedule thread. Prompts individual wallets to resend
1081 : : * their transactions. Actual rebroadcast schedule is managed by the wallets themselves.
1082 : : */
1083 : : void MaybeResendWalletTxs(WalletContext& context);
1084 : :
1085 : : /** RAII object to check and reserve a wallet rescan */
1086 : : class WalletRescanReserver
1087 : : {
1088 : : private:
1089 : : using Clock = std::chrono::steady_clock;
1090 : : using NowFn = std::function<Clock::time_point()>;
1091 : : CWallet& m_wallet;
1092 : : bool m_could_reserve{false};
1093 : : NowFn m_now;
1094 : : public:
1095 : 9 : explicit WalletRescanReserver(CWallet& w) : m_wallet(w) {}
1096 : :
1097 : 9 : bool reserve(bool with_passphrase = false)
1098 : : {
1099 [ - + ]: 9 : assert(!m_could_reserve);
1100 [ + - ]: 9 : if (m_wallet.fScanningWallet.exchange(true)) {
1101 : : return false;
1102 : : }
1103 : 9 : m_wallet.m_scanning_with_passphrase.exchange(with_passphrase);
1104 : 9 : m_wallet.m_scanning_start = SteadyClock::now();
1105 : 9 : m_wallet.m_scanning_progress = 0;
1106 : 9 : m_could_reserve = true;
1107 : 9 : return true;
1108 : : }
1109 : :
1110 : 9 : bool isReserved() const
1111 : : {
1112 [ + - - + ]: 9 : return (m_could_reserve && m_wallet.fScanningWallet);
1113 : : }
1114 : :
1115 [ + + ]: 450 : Clock::time_point now() const { return m_now ? m_now() : Clock::now(); };
1116 : :
1117 : 1 : void setNow(NowFn now) { m_now = std::move(now); }
1118 : :
1119 : 9 : ~WalletRescanReserver()
1120 : : {
1121 [ + - ]: 9 : if (m_could_reserve) {
1122 : 9 : m_wallet.fScanningWallet = false;
1123 : 9 : m_wallet.m_scanning_with_passphrase = false;
1124 : : }
1125 : 9 : }
1126 : : };
1127 : :
1128 : : //! Add wallet name to persistent configuration so it will be loaded on startup.
1129 : : bool AddWalletSetting(interfaces::Chain& chain, const std::string& wallet_name);
1130 : :
1131 : : //! Remove wallet name from persistent configuration so it will not be loaded on startup.
1132 : : bool RemoveWalletSetting(interfaces::Chain& chain, const std::string& wallet_name);
1133 : :
1134 : : struct MigrationResult {
1135 : : std::string wallet_name;
1136 : : std::shared_ptr<CWallet> wallet;
1137 : : std::shared_ptr<CWallet> watchonly_wallet;
1138 : : std::shared_ptr<CWallet> solvables_wallet;
1139 : : fs::path backup_path;
1140 : : };
1141 : :
1142 : : //! Do all steps to migrate a legacy wallet to a descriptor wallet
1143 : : [[nodiscard]] util::Result<MigrationResult> MigrateLegacyToDescriptor(const std::string& wallet_name, const SecureString& passphrase, WalletContext& context);
1144 : : //! Requirement: The wallet provided to this function must be isolated, with no attachment to the node's context.
1145 : : [[nodiscard]] util::Result<MigrationResult> MigrateLegacyToDescriptor(std::shared_ptr<CWallet> local_wallet, const SecureString& passphrase, WalletContext& context);
1146 : : } // namespace wallet
1147 : :
1148 : : #endif // BITCOIN_WALLET_WALLET_H
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