forked from bitcoin/bitcoin
/
wallet.h
1344 lines (1127 loc) · 59.1 KB
/
wallet.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2020 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 <amount.h>
#include <interfaces/chain.h>
#include <interfaces/handler.h>
#include <outputtype.h>
#include <policy/feerate.h>
#include <psbt.h>
#include <tinyformat.h>
#include <util/message.h>
#include <util/strencodings.h>
#include <util/string.h>
#include <util/system.h>
#include <util/ui_change_type.h>
#include <validationinterface.h>
#include <wallet/coinselection.h>
#include <wallet/crypter.h>
#include <wallet/scriptpubkeyman.h>
#include <wallet/walletdb.h>
#include <wallet/walletutil.h>
#include <algorithm>
#include <atomic>
#include <map>
#include <memory>
#include <set>
#include <stdexcept>
#include <stdint.h>
#include <string>
#include <utility>
#include <vector>
#include <boost/signals2/signal.hpp>
using LoadWalletFn = std::function<void(std::unique_ptr<interfaces::Wallet> wallet)>;
struct bilingual_str;
//! 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<CWallet>&& wallet);
bool AddWallet(const std::shared_ptr<CWallet>& wallet);
bool RemoveWallet(const std::shared_ptr<CWallet>& wallet, Optional<bool> load_on_start, std::vector<bilingual_str>& warnings);
bool RemoveWallet(const std::shared_ptr<CWallet>& wallet, Optional<bool> load_on_start);
std::vector<std::shared_ptr<CWallet>> GetWallets();
std::shared_ptr<CWallet> GetWallet(const std::string& name);
std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, Optional<bool> load_on_start, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings);
std::shared_ptr<CWallet> CreateWallet(interfaces::Chain& chain, const std::string& name, Optional<bool> load_on_start, DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings);
std::unique_ptr<interfaces::Handler> HandleLoadWallet(LoadWalletFn load_wallet);
std::unique_ptr<WalletDatabase> MakeWalletDatabase(const std::string& name, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error);
//! -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;
/**
* maximum fee increase allowed to do partial spend avoidance, even for nodes with this feature disabled by default
*
* A value of -1 disables this feature completely.
* A value of 0 (current default) means to attempt to do partial spend avoidance, and use its results if the fees remain *unchanged*
* 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].
*/
static const CAmount DEFAULT_MAX_AVOIDPARTIALSPEND_FEE = 0;
//! discourage APS fee higher than this amount
constexpr CAmount HIGH_APS_FEE{COIN / 10000};
//! 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};
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
| WALLET_FLAG_DESCRIPTORS;
static constexpr uint64_t MUTABLE_WALLET_FLAGS =
WALLET_FLAG_AVOID_REUSE;
static const std::map<std::string,WalletFlags> 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},
{"descriptor_wallet", WALLET_FLAG_DESCRIPTORS},
};
extern const std::map<uint64_t,std::string> 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
const 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
{
private:
bool m_change{true};
std::string m_label;
public:
std::string purpose;
CAddressBookData() : purpose("unknown") {}
typedef std::map<std::string, std::string> StringMap;
StringMap destdata;
bool IsChange() const { return m_change; }
const std::string& GetLabel() const { return m_label; }
void SetLabel(const std::string& label) {
m_change = false;
m_label = label;
}
};
struct CRecipient
{
CScript scriptPubKey;
CAmount nAmount;
bool fSubtractFeeFromAmount;
};
typedef std::map<std::string, std::string> 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"]);
}
static inline void WriteOrderPos(const int64_t& nOrderPos, mapValue_t& mapValue)
{
if (nOrderPos == -1)
return;
mapValue["n"] = ToString(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<typename Stream>
void Unserialize(Stream& s)
{
CTransactionRef tx;
uint256 hashBlock;
std::vector<uint256> 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* const pwallet;
/** Constant used in hashBlock to indicate tx has been abandoned, only used at
* serialization/deserialization to avoid ambiguity with conflicted.
*/
static constexpr const uint256& ABANDON_HASH = uint256::ONE;
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<std::pair<std::string, std::string> > 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<int64_t, CWalletTx*>::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];
/**
* This flag is true if all m_amounts caches are empty. This is particularly
* useful in places where MarkDirty is conditionally called and the
* condition can be expensive and thus can be skipped if the flag is true.
* See MarkDestinationsDirty.
*/
mutable bool m_is_cache_empty{true};
mutable bool fChangeCached;
mutable bool fInMempool;
mutable CAmount nChangeCached;
CWalletTx(const CWallet* wallet, CTransactionRef arg)
: pwallet(wallet),
tx(std::move(arg))
{
Init();
}
void Init()
{
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<typename Stream>
void Serialize(Stream& s) const
{
mapValue_t mapValueCopy = mapValue;
mapValueCopy["fromaccount"] = "";
WriteOrderPos(nOrderPos, mapValueCopy);
if (nTimeSmart) {
mapValueCopy["timesmart"] = strprintf("%u", nTimeSmart);
}
std::vector<char> dummy_vector1; //!< Used to be vMerkleBranch
std::vector<char> 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<typename Stream>
void Unserialize(Stream& s)
{
Init();
std::vector<uint256> dummy_vector1; //!< Used to be vMerkleBranch
std::vector<CMerkleTx> 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;
m_is_cache_empty = true;
}
//! 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<COutputEntry>& listReceived,
std::list<COutputEntry>& 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() 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<uint256> 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;
// Disable copying of CWalletTx objects to prevent bugs where instances get
// copied in and out of the mapWallet map, and fields are updated in the
// wrong copy.
CWalletTx(CWalletTx const &) = delete;
void operator=(CWalletTx const &x) = delete;
};
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);
CFeeRate m_long_term_feerate;
CFeeRate m_discard_feerate;
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,
CFeeRate long_term_feerate, CFeeRate discard_feerate, 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),
m_long_term_feerate(long_term_feerate),
m_discard_feerate(discard_feerate),
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, public interfaces::Chain::Notifications
{
private:
CKeyingMaterial vMasterKey GUARDED_BY(cs_wallet);
bool Unlock(const CKeyingMaterial& vMasterKeyIn, bool accept_no_keys = false);
std::atomic<bool> fAbortRescan{false};
std::atomic<bool> fScanningWallet{false}; // controlled by WalletRescanReserver
std::atomic<int64_t> m_scanning_start{0};
std::atomic<double> m_scanning_progress{0};
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};
int64_t nNextResend = 0;
bool fBroadcastTransactions = false;
// Local time that the tip block was received. Used to schedule wallet rebroadcasts.
std::atomic<int64_t> 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<COutPoint, uint256> 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<TxSpends::iterator, TxSpends::iterator>) 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<uint64_t> 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 name: relative directory name or "" for default wallet. */
std::string m_name;
/** Internal database handle. */
std::unique_ptr<WalletDatabase> 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;
std::map<OutputType, ScriptPubKeyMan*> m_external_spk_managers;
std::map<OutputType, ScriptPubKeyMan*> m_internal_spk_managers;
// Indexed by a unique identifier produced by each ScriptPubKeyMan using
// ScriptPubKeyMan::GetID. In many cases it will be the hash of an internal structure
std::map<uint256, std::unique_ptr<ScriptPubKeyMan>> m_spk_managers;
bool CreateTransactionInternal(const std::vector<CRecipient>& vecSend, CTransactionRef& tx, CAmount& nFeeRet, int& nChangePosInOut, bilingual_str& error, const CCoinControl& coin_control, FeeCalculation& fee_calc_out, bool sign);
public:
/*
* Main wallet lock.
* This lock protects all the fields added by CWallet.
*/
mutable RecursiveMutex cs_wallet;
/** Get database handle used by this wallet. Ideally this function would
* not be necessary.
*/
WalletDatabase& GetDBHandle()
{
return *database;
}
WalletDatabase& GetDatabase() const 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<COutput>& vAvailableCoins, const CAmount& nTargetValue, std::set<CInputCoin>& setCoinsRet, CAmount& nValueRet,
const CCoinControl& coin_control, CoinSelectionParams& coin_selection_params, bool& bnb_used) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
/** Get a name for this wallet for logging/debugging purposes.
*/
const std::string& GetName() const { return m_name; }
typedef std::map<unsigned int, CMasterKey> MasterKeyMap;
MasterKeyMap mapMasterKeys;
unsigned int nMasterKeyMaxID = 0;
/** Construct wallet with specified name and database implementation. */
CWallet(interfaces::Chain* chain, const std::string& name, std::unique_ptr<WalletDatabase> database)
: m_chain(chain),
m_name(name),
database(std::move(database))
{
}
~CWallet()
{
// Should not have slots connected at this point.
assert(NotifyUnload.empty());
}
bool IsCrypted() const;
bool IsLocked() const override;
bool Lock();
/** Interface to assert chain access */
bool HaveChain() const { return m_chain ? true : false; }
std::map<uint256, CWalletTx> mapWallet GUARDED_BY(cs_wallet);
typedef std::multimap<int64_t, CWalletTx*> TxItems;
TxItems wtxOrdered;
int64_t nOrderPosNext GUARDED_BY(cs_wallet) = 0;
uint64_t nAccountingEntryNumber = 0;
std::map<CTxDestination, CAddressBookData> m_address_book GUARDED_BY(cs_wallet);
const CAddressBookData* FindAddressBookEntry(const CTxDestination&, bool allow_change = false) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
std::set<COutPoint> setLockedCoins GUARDED_BY(cs_wallet);
/** Registered interfaces::Chain::Notifications handler. */
std::unique_ptr<interfaces::Handler> m_chain_notifications_handler;
/** Interface for accessing chain state. */
interfaces::Chain& chain() const { assert(m_chain); return *m_chain; }
const CWalletTx* GetWalletTx(const uint256& hash) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
bool IsTrusted(const CWalletTx& wtx, std::set<uint256>& trusted_parents) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
//! check whether we support the named feature
bool CanSupportFeature(enum WalletFeature wf) const override EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); return IsFeatureSupported(nWalletVersion, wf); }
/**
* populate vCoins with vector of available COutputs.
*/
void AvailableCoins(std::vector<COutput>& 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<CTxDestination, std::vector<COutput>> ListCoins() 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<OutputGroup> groups,
std::set<CInputCoin>& 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 known UTXO with the same single key has been spent.
bool IsSpentKey(const uint256& hash, unsigned int n) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
void SetSpentKeyState(WalletBatch& batch, const uint256& hash, unsigned int n, bool used, std::set<CTxDestination>& tx_destinations) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
std::vector<OutputGroup> GroupOutputs(const std::vector<COutput>& outputs, bool single_coin, const size_t max_ancestors) 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<COutPoint>& vOutpts) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
/*
* Rescan abort properties
*/
void AbortRescan() { fAbortRescan = true; }
bool IsAbortingRescan() const { return fAbortRescan; }
bool IsScanning() const { 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; return true; }
/**
* Adds a destination data tuple to the store, and saves it to disk
* When adding new fields, take care to consider how DelAddressBook should handle it!
*/
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<std::string> 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 GUARDED_BY(cs_wallet){0};
// Used to prevent concurrent calls to walletpassphrase RPC.
Mutex m_unlock_mutex;
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(std::map<CKeyID, int64_t> &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();
//! Callback for updating transaction metadata in mapWallet.
//!
//! @param wtx - reference to mapWallet transaction to update
//! @param new_tx - true if wtx is newly inserted, false if it previously existed
//!
//! @return true if wtx is changed and needs to be saved to disk, otherwise false
using UpdateWalletTxFn = std::function<bool(CWalletTx& wtx, bool new_tx)>;
CWalletTx* AddToWallet(CTransactionRef tx, const CWalletTx::Confirmation& confirm, const UpdateWalletTxFn& update_wtx=nullptr, bool fFlushOnClose=true);
bool LoadToWallet(const uint256& hash, const UpdateWalletTxFn& fill_wtx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
void transactionAddedToMempool(const CTransactionRef& tx, uint64_t mempool_sequence) override;
void blockConnected(const CBlock& block, 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<int> 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& start_block, int start_height, Optional<int> max_height, const WalletRescanReserver& reserver, bool fUpdate);
void transactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t mempool_sequence) 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(const Optional<OutputType>& change_type, const std::vector<CRecipient>& vecSend);
/**
* Insert additional inputs into the transaction by
* calling CreateTransaction();
*/
bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, bilingual_str& error, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl);
// Fetch the inputs and sign with SIGHASH_ALL.
bool SignTransaction(CMutableTransaction& tx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
// Sign the tx given the input coins and sighash.
bool SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const;
SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const;
/**
* Fills out a PSBT with information from the wallet. Fills in UTXOs if we have
* them. Tries to sign if sign=true. Sets `complete` if the PSBT is now complete
* (i.e. has all required signatures or signature-parts, and is ready to
* finalize.) Sets `error` and returns false if something goes wrong.
*
* @param[in] psbtx PartiallySignedTransaction to fill in
* @param[out] complete indicates whether the PSBT is now complete
* @param[in] sighash_type the sighash type to use when signing (if PSBT does not specify)
* @param[in] sign whether to sign or not
* @param[in] bip32derivs whether to fill in bip32 derivation information if available
* return error
*/
TransactionError FillPSBT(PartiallySignedTransaction& psbtx,
bool& complete,
int sighash_type = 1 /* SIGHASH_ALL */,
bool sign = true,
bool bip32derivs = true,
size_t* n_signed = nullptr) const;
/**
* 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(const std::vector<CRecipient>& vecSend, CTransactionRef& tx, CAmount& nFeeRet, int& nChangePosInOut, bilingual_str& error, const CCoinControl& coin_control, FeeCalculation& fee_calc_out, 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[in] tx The transaction to be broadcast.
* @param[in] mapValue key-values to be set on the transaction.
* @param[in] orderForm BIP 70 / BIP 21 order form details to be set on the transaction.
*/
void CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::vector<std::pair<std::string, std::string>> orderForm);
bool DummySignTx(CMutableTransaction &txNew, const std::set<CTxOut> &txouts, bool use_max_sig = false) const
{
std::vector<CTxOut> v_txouts(txouts.size());
std::copy(txouts.begin(), txouts.end(), v_txouts.begin());