1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2016 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.
6 #include "wallet/wallet.h"
9 #include "checkpoints.h"
11 #include "wallet/coincontrol.h"
12 #include "consensus/consensus.h"
13 #include "consensus/validation.h"
18 #include "validation.h"
20 #include "policy/fees.h"
21 #include "policy/policy.h"
22 #include "policy/rbf.h"
23 #include "primitives/block.h"
24 #include "primitives/transaction.h"
25 #include "script/script.h"
26 #include "script/sign.h"
27 #include "scheduler.h"
29 #include "txmempool.h"
31 #include "ui_interface.h"
32 #include "utilmoneystr.h"
36 #include <boost/algorithm/string/replace.hpp>
37 #include <boost/thread.hpp>
39 std::vector
<CWalletRef
> vpwallets
;
40 /** Transaction fee set by the user */
41 CFeeRate
payTxFee(DEFAULT_TRANSACTION_FEE
);
42 unsigned int nTxConfirmTarget
= DEFAULT_TX_CONFIRM_TARGET
;
43 bool bSpendZeroConfChange
= DEFAULT_SPEND_ZEROCONF_CHANGE
;
44 bool fWalletRbf
= DEFAULT_WALLET_RBF
;
46 const char * DEFAULT_WALLET_DAT
= "wallet.dat";
47 const uint32_t BIP32_HARDENED_KEY_LIMIT
= 0x80000000;
50 * Fees smaller than this (in satoshi) are considered zero fee (for transaction creation)
51 * Override with -mintxfee
53 CFeeRate
CWallet::minTxFee
= CFeeRate(DEFAULT_TRANSACTION_MINFEE
);
55 * If fee estimation does not have enough data to provide estimates, use this fee instead.
56 * Has no effect if not using fee estimation
57 * Override with -fallbackfee
59 CFeeRate
CWallet::fallbackFee
= CFeeRate(DEFAULT_FALLBACK_FEE
);
61 CFeeRate
CWallet::m_discard_rate
= CFeeRate(DEFAULT_DISCARD_FEE
);
63 const uint256
CMerkleTx::ABANDON_HASH(uint256S("0000000000000000000000000000000000000000000000000000000000000001"));
65 /** @defgroup mapWallet
70 struct CompareValueOnly
72 bool operator()(const CInputCoin
& t1
,
73 const CInputCoin
& t2
) const
75 return t1
.txout
.nValue
< t2
.txout
.nValue
;
79 std::string
COutput::ToString() const
81 return strprintf("COutput(%s, %d, %d) [%s]", tx
->GetHash().ToString(), i
, nDepth
, FormatMoney(tx
->tx
->vout
[i
].nValue
));
84 class CAffectedKeysVisitor
: public boost::static_visitor
<void> {
86 const CKeyStore
&keystore
;
87 std::vector
<CKeyID
> &vKeys
;
90 CAffectedKeysVisitor(const CKeyStore
&keystoreIn
, std::vector
<CKeyID
> &vKeysIn
) : keystore(keystoreIn
), vKeys(vKeysIn
) {}
92 void Process(const CScript
&script
) {
94 std::vector
<CTxDestination
> vDest
;
96 if (ExtractDestinations(script
, type
, vDest
, nRequired
)) {
97 for (const CTxDestination
&dest
: vDest
)
98 boost::apply_visitor(*this, dest
);
102 void operator()(const CKeyID
&keyId
) {
103 if (keystore
.HaveKey(keyId
))
104 vKeys
.push_back(keyId
);
107 void operator()(const CScriptID
&scriptId
) {
109 if (keystore
.GetCScript(scriptId
, script
))
113 void operator()(const CNoDestination
&none
) {}
116 const CWalletTx
* CWallet::GetWalletTx(const uint256
& hash
) const
119 std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.find(hash
);
120 if (it
== mapWallet
.end())
122 return &(it
->second
);
125 CPubKey
CWallet::GenerateNewKey(CWalletDB
&walletdb
, bool internal
)
127 AssertLockHeld(cs_wallet
); // mapKeyMetadata
128 bool fCompressed
= CanSupportFeature(FEATURE_COMPRPUBKEY
); // default to compressed public keys if we want 0.6.0 wallets
132 // Create new metadata
133 int64_t nCreationTime
= GetTime();
134 CKeyMetadata
metadata(nCreationTime
);
136 // use HD key derivation if HD was enabled during wallet creation
138 DeriveNewChildKey(walletdb
, metadata
, secret
, (CanSupportFeature(FEATURE_HD_SPLIT
) ? internal
: false));
140 secret
.MakeNewKey(fCompressed
);
143 // Compressed public keys were introduced in version 0.6.0
145 SetMinVersion(FEATURE_COMPRPUBKEY
);
148 CPubKey pubkey
= secret
.GetPubKey();
149 assert(secret
.VerifyPubKey(pubkey
));
151 mapKeyMetadata
[pubkey
.GetID()] = metadata
;
152 UpdateTimeFirstKey(nCreationTime
);
154 if (!AddKeyPubKeyWithDB(walletdb
, secret
, pubkey
)) {
155 throw std::runtime_error(std::string(__func__
) + ": AddKey failed");
160 void CWallet::DeriveNewChildKey(CWalletDB
&walletdb
, CKeyMetadata
& metadata
, CKey
& secret
, bool internal
)
162 // for now we use a fixed keypath scheme of m/0'/0'/k
163 CKey key
; //master key seed (256bit)
164 CExtKey masterKey
; //hd master key
165 CExtKey accountKey
; //key at m/0'
166 CExtKey chainChildKey
; //key at m/0'/0' (external) or m/0'/1' (internal)
167 CExtKey childKey
; //key at m/0'/0'/<n>'
169 // try to get the master key
170 if (!GetKey(hdChain
.masterKeyID
, key
))
171 throw std::runtime_error(std::string(__func__
) + ": Master key not found");
173 masterKey
.SetMaster(key
.begin(), key
.size());
176 // use hardened derivation (child keys >= 0x80000000 are hardened after bip32)
177 masterKey
.Derive(accountKey
, BIP32_HARDENED_KEY_LIMIT
);
179 // derive m/0'/0' (external chain) OR m/0'/1' (internal chain)
180 assert(internal
? CanSupportFeature(FEATURE_HD_SPLIT
) : true);
181 accountKey
.Derive(chainChildKey
, BIP32_HARDENED_KEY_LIMIT
+(internal
? 1 : 0));
183 // derive child key at next index, skip keys already known to the wallet
185 // always derive hardened keys
186 // childIndex | BIP32_HARDENED_KEY_LIMIT = derive childIndex in hardened child-index-range
187 // example: 1 | BIP32_HARDENED_KEY_LIMIT == 0x80000001 == 2147483649
189 chainChildKey
.Derive(childKey
, hdChain
.nInternalChainCounter
| BIP32_HARDENED_KEY_LIMIT
);
190 metadata
.hdKeypath
= "m/0'/1'/" + std::to_string(hdChain
.nInternalChainCounter
) + "'";
191 hdChain
.nInternalChainCounter
++;
194 chainChildKey
.Derive(childKey
, hdChain
.nExternalChainCounter
| BIP32_HARDENED_KEY_LIMIT
);
195 metadata
.hdKeypath
= "m/0'/0'/" + std::to_string(hdChain
.nExternalChainCounter
) + "'";
196 hdChain
.nExternalChainCounter
++;
198 } while (HaveKey(childKey
.key
.GetPubKey().GetID()));
199 secret
= childKey
.key
;
200 metadata
.hdMasterKeyID
= hdChain
.masterKeyID
;
201 // update the chain model in the database
202 if (!walletdb
.WriteHDChain(hdChain
))
203 throw std::runtime_error(std::string(__func__
) + ": Writing HD chain model failed");
206 bool CWallet::AddKeyPubKeyWithDB(CWalletDB
&walletdb
, const CKey
& secret
, const CPubKey
&pubkey
)
208 AssertLockHeld(cs_wallet
); // mapKeyMetadata
210 // CCryptoKeyStore has no concept of wallet databases, but calls AddCryptedKey
211 // which is overridden below. To avoid flushes, the database handle is
212 // tunneled through to it.
213 bool needsDB
= !pwalletdbEncryption
;
215 pwalletdbEncryption
= &walletdb
;
217 if (!CCryptoKeyStore::AddKeyPubKey(secret
, pubkey
)) {
218 if (needsDB
) pwalletdbEncryption
= NULL
;
221 if (needsDB
) pwalletdbEncryption
= NULL
;
223 // check if we need to remove from watch-only
225 script
= GetScriptForDestination(pubkey
.GetID());
226 if (HaveWatchOnly(script
)) {
227 RemoveWatchOnly(script
);
229 script
= GetScriptForRawPubKey(pubkey
);
230 if (HaveWatchOnly(script
)) {
231 RemoveWatchOnly(script
);
235 return walletdb
.WriteKey(pubkey
,
237 mapKeyMetadata
[pubkey
.GetID()]);
242 bool CWallet::AddKeyPubKey(const CKey
& secret
, const CPubKey
&pubkey
)
244 CWalletDB
walletdb(*dbw
);
245 return CWallet::AddKeyPubKeyWithDB(walletdb
, secret
, pubkey
);
248 bool CWallet::AddCryptedKey(const CPubKey
&vchPubKey
,
249 const std::vector
<unsigned char> &vchCryptedSecret
)
251 if (!CCryptoKeyStore::AddCryptedKey(vchPubKey
, vchCryptedSecret
))
255 if (pwalletdbEncryption
)
256 return pwalletdbEncryption
->WriteCryptedKey(vchPubKey
,
258 mapKeyMetadata
[vchPubKey
.GetID()]);
260 return CWalletDB(*dbw
).WriteCryptedKey(vchPubKey
,
262 mapKeyMetadata
[vchPubKey
.GetID()]);
266 bool CWallet::LoadKeyMetadata(const CTxDestination
& keyID
, const CKeyMetadata
&meta
)
268 AssertLockHeld(cs_wallet
); // mapKeyMetadata
269 UpdateTimeFirstKey(meta
.nCreateTime
);
270 mapKeyMetadata
[keyID
] = meta
;
274 bool CWallet::LoadCryptedKey(const CPubKey
&vchPubKey
, const std::vector
<unsigned char> &vchCryptedSecret
)
276 return CCryptoKeyStore::AddCryptedKey(vchPubKey
, vchCryptedSecret
);
280 * Update wallet first key creation time. This should be called whenever keys
281 * are added to the wallet, with the oldest key creation time.
283 void CWallet::UpdateTimeFirstKey(int64_t nCreateTime
)
285 AssertLockHeld(cs_wallet
);
286 if (nCreateTime
<= 1) {
287 // Cannot determine birthday information, so set the wallet birthday to
288 // the beginning of time.
290 } else if (!nTimeFirstKey
|| nCreateTime
< nTimeFirstKey
) {
291 nTimeFirstKey
= nCreateTime
;
295 bool CWallet::AddCScript(const CScript
& redeemScript
)
297 if (!CCryptoKeyStore::AddCScript(redeemScript
))
299 return CWalletDB(*dbw
).WriteCScript(Hash160(redeemScript
), redeemScript
);
302 bool CWallet::LoadCScript(const CScript
& redeemScript
)
304 /* A sanity check was added in pull #3843 to avoid adding redeemScripts
305 * that never can be redeemed. However, old wallets may still contain
306 * these. Do not add them to the wallet and warn. */
307 if (redeemScript
.size() > MAX_SCRIPT_ELEMENT_SIZE
)
309 std::string strAddr
= CBitcoinAddress(CScriptID(redeemScript
)).ToString();
310 LogPrintf("%s: Warning: This wallet contains a redeemScript of size %i which exceeds maximum size %i thus can never be redeemed. Do not use address %s.\n",
311 __func__
, redeemScript
.size(), MAX_SCRIPT_ELEMENT_SIZE
, strAddr
);
315 return CCryptoKeyStore::AddCScript(redeemScript
);
318 bool CWallet::AddWatchOnly(const CScript
& dest
)
320 if (!CCryptoKeyStore::AddWatchOnly(dest
))
322 const CKeyMetadata
& meta
= mapKeyMetadata
[CScriptID(dest
)];
323 UpdateTimeFirstKey(meta
.nCreateTime
);
324 NotifyWatchonlyChanged(true);
325 return CWalletDB(*dbw
).WriteWatchOnly(dest
, meta
);
328 bool CWallet::AddWatchOnly(const CScript
& dest
, int64_t nCreateTime
)
330 mapKeyMetadata
[CScriptID(dest
)].nCreateTime
= nCreateTime
;
331 return AddWatchOnly(dest
);
334 bool CWallet::RemoveWatchOnly(const CScript
&dest
)
336 AssertLockHeld(cs_wallet
);
337 if (!CCryptoKeyStore::RemoveWatchOnly(dest
))
339 if (!HaveWatchOnly())
340 NotifyWatchonlyChanged(false);
341 if (!CWalletDB(*dbw
).EraseWatchOnly(dest
))
347 bool CWallet::LoadWatchOnly(const CScript
&dest
)
349 return CCryptoKeyStore::AddWatchOnly(dest
);
352 bool CWallet::Unlock(const SecureString
& strWalletPassphrase
)
355 CKeyingMaterial _vMasterKey
;
359 for (const MasterKeyMap::value_type
& pMasterKey
: mapMasterKeys
)
361 if(!crypter
.SetKeyFromPassphrase(strWalletPassphrase
, pMasterKey
.second
.vchSalt
, pMasterKey
.second
.nDeriveIterations
, pMasterKey
.second
.nDerivationMethod
))
363 if (!crypter
.Decrypt(pMasterKey
.second
.vchCryptedKey
, _vMasterKey
))
364 continue; // try another master key
365 if (CCryptoKeyStore::Unlock(_vMasterKey
))
372 bool CWallet::ChangeWalletPassphrase(const SecureString
& strOldWalletPassphrase
, const SecureString
& strNewWalletPassphrase
)
374 bool fWasLocked
= IsLocked();
381 CKeyingMaterial _vMasterKey
;
382 for (MasterKeyMap::value_type
& pMasterKey
: mapMasterKeys
)
384 if(!crypter
.SetKeyFromPassphrase(strOldWalletPassphrase
, pMasterKey
.second
.vchSalt
, pMasterKey
.second
.nDeriveIterations
, pMasterKey
.second
.nDerivationMethod
))
386 if (!crypter
.Decrypt(pMasterKey
.second
.vchCryptedKey
, _vMasterKey
))
388 if (CCryptoKeyStore::Unlock(_vMasterKey
))
390 int64_t nStartTime
= GetTimeMillis();
391 crypter
.SetKeyFromPassphrase(strNewWalletPassphrase
, pMasterKey
.second
.vchSalt
, pMasterKey
.second
.nDeriveIterations
, pMasterKey
.second
.nDerivationMethod
);
392 pMasterKey
.second
.nDeriveIterations
= pMasterKey
.second
.nDeriveIterations
* (100 / ((double)(GetTimeMillis() - nStartTime
)));
394 nStartTime
= GetTimeMillis();
395 crypter
.SetKeyFromPassphrase(strNewWalletPassphrase
, pMasterKey
.second
.vchSalt
, pMasterKey
.second
.nDeriveIterations
, pMasterKey
.second
.nDerivationMethod
);
396 pMasterKey
.second
.nDeriveIterations
= (pMasterKey
.second
.nDeriveIterations
+ pMasterKey
.second
.nDeriveIterations
* 100 / ((double)(GetTimeMillis() - nStartTime
))) / 2;
398 if (pMasterKey
.second
.nDeriveIterations
< 25000)
399 pMasterKey
.second
.nDeriveIterations
= 25000;
401 LogPrintf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey
.second
.nDeriveIterations
);
403 if (!crypter
.SetKeyFromPassphrase(strNewWalletPassphrase
, pMasterKey
.second
.vchSalt
, pMasterKey
.second
.nDeriveIterations
, pMasterKey
.second
.nDerivationMethod
))
405 if (!crypter
.Encrypt(_vMasterKey
, pMasterKey
.second
.vchCryptedKey
))
407 CWalletDB(*dbw
).WriteMasterKey(pMasterKey
.first
, pMasterKey
.second
);
418 void CWallet::SetBestChain(const CBlockLocator
& loc
)
420 CWalletDB
walletdb(*dbw
);
421 walletdb
.WriteBestBlock(loc
);
424 bool CWallet::SetMinVersion(enum WalletFeature nVersion
, CWalletDB
* pwalletdbIn
, bool fExplicit
)
426 LOCK(cs_wallet
); // nWalletVersion
427 if (nWalletVersion
>= nVersion
)
430 // when doing an explicit upgrade, if we pass the max version permitted, upgrade all the way
431 if (fExplicit
&& nVersion
> nWalletMaxVersion
)
432 nVersion
= FEATURE_LATEST
;
434 nWalletVersion
= nVersion
;
436 if (nVersion
> nWalletMaxVersion
)
437 nWalletMaxVersion
= nVersion
;
440 CWalletDB
* pwalletdb
= pwalletdbIn
? pwalletdbIn
: new CWalletDB(*dbw
);
441 if (nWalletVersion
> 40000)
442 pwalletdb
->WriteMinVersion(nWalletVersion
);
450 bool CWallet::SetMaxVersion(int nVersion
)
452 LOCK(cs_wallet
); // nWalletVersion, nWalletMaxVersion
453 // cannot downgrade below current version
454 if (nWalletVersion
> nVersion
)
457 nWalletMaxVersion
= nVersion
;
462 std::set
<uint256
> CWallet::GetConflicts(const uint256
& txid
) const
464 std::set
<uint256
> result
;
465 AssertLockHeld(cs_wallet
);
467 std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.find(txid
);
468 if (it
== mapWallet
.end())
470 const CWalletTx
& wtx
= it
->second
;
472 std::pair
<TxSpends::const_iterator
, TxSpends::const_iterator
> range
;
474 for (const CTxIn
& txin
: wtx
.tx
->vin
)
476 if (mapTxSpends
.count(txin
.prevout
) <= 1)
477 continue; // No conflict if zero or one spends
478 range
= mapTxSpends
.equal_range(txin
.prevout
);
479 for (TxSpends::const_iterator _it
= range
.first
; _it
!= range
.second
; ++_it
)
480 result
.insert(_it
->second
);
485 bool CWallet::HasWalletSpend(const uint256
& txid
) const
487 AssertLockHeld(cs_wallet
);
488 auto iter
= mapTxSpends
.lower_bound(COutPoint(txid
, 0));
489 return (iter
!= mapTxSpends
.end() && iter
->first
.hash
== txid
);
492 void CWallet::Flush(bool shutdown
)
494 dbw
->Flush(shutdown
);
497 bool CWallet::Verify()
499 if (GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET
))
502 uiInterface
.InitMessage(_("Verifying wallet(s)..."));
504 // Keep track of each wallet absolute path to detect duplicates.
505 std::set
<fs::path
> wallet_paths
;
507 for (const std::string
& walletFile
: gArgs
.GetArgs("-wallet")) {
508 if (boost::filesystem::path(walletFile
).filename() != walletFile
) {
509 return InitError(strprintf(_("Error loading wallet %s. -wallet parameter must only specify a filename (not a path)."), walletFile
));
512 if (SanitizeString(walletFile
, SAFE_CHARS_FILENAME
) != walletFile
) {
513 return InitError(strprintf(_("Error loading wallet %s. Invalid characters in -wallet filename."), walletFile
));
516 fs::path wallet_path
= fs::absolute(walletFile
, GetDataDir());
518 if (fs::exists(wallet_path
) && (!fs::is_regular_file(wallet_path
) || fs::is_symlink(wallet_path
))) {
519 return InitError(strprintf(_("Error loading wallet %s. -wallet filename must be a regular file."), walletFile
));
522 if (!wallet_paths
.insert(wallet_path
).second
) {
523 return InitError(strprintf(_("Error loading wallet %s. Duplicate -wallet filename specified."), walletFile
));
526 std::string strError
;
527 if (!CWalletDB::VerifyEnvironment(walletFile
, GetDataDir().string(), strError
)) {
528 return InitError(strError
);
531 if (GetBoolArg("-salvagewallet", false)) {
532 // Recover readable keypairs:
534 std::string backup_filename
;
535 if (!CWalletDB::Recover(walletFile
, (void *)&dummyWallet
, CWalletDB::RecoverKeysOnlyFilter
, backup_filename
)) {
540 std::string strWarning
;
541 bool dbV
= CWalletDB::VerifyDatabaseFile(walletFile
, GetDataDir().string(), strWarning
, strError
);
542 if (!strWarning
.empty()) {
543 InitWarning(strWarning
);
554 void CWallet::SyncMetaData(std::pair
<TxSpends::iterator
, TxSpends::iterator
> range
)
556 // We want all the wallet transactions in range to have the same metadata as
557 // the oldest (smallest nOrderPos).
558 // So: find smallest nOrderPos:
560 int nMinOrderPos
= std::numeric_limits
<int>::max();
561 const CWalletTx
* copyFrom
= NULL
;
562 for (TxSpends::iterator it
= range
.first
; it
!= range
.second
; ++it
)
564 const uint256
& hash
= it
->second
;
565 int n
= mapWallet
[hash
].nOrderPos
;
566 if (n
< nMinOrderPos
)
569 copyFrom
= &mapWallet
[hash
];
572 // Now copy data from copyFrom to rest:
573 for (TxSpends::iterator it
= range
.first
; it
!= range
.second
; ++it
)
575 const uint256
& hash
= it
->second
;
576 CWalletTx
* copyTo
= &mapWallet
[hash
];
577 if (copyFrom
== copyTo
) continue;
578 if (!copyFrom
->IsEquivalentTo(*copyTo
)) continue;
579 copyTo
->mapValue
= copyFrom
->mapValue
;
580 copyTo
->vOrderForm
= copyFrom
->vOrderForm
;
581 // fTimeReceivedIsTxTime not copied on purpose
582 // nTimeReceived not copied on purpose
583 copyTo
->nTimeSmart
= copyFrom
->nTimeSmart
;
584 copyTo
->fFromMe
= copyFrom
->fFromMe
;
585 copyTo
->strFromAccount
= copyFrom
->strFromAccount
;
586 // nOrderPos not copied on purpose
587 // cached members not copied on purpose
592 * Outpoint is spent if any non-conflicted transaction
595 bool CWallet::IsSpent(const uint256
& hash
, unsigned int n
) const
597 const COutPoint
outpoint(hash
, n
);
598 std::pair
<TxSpends::const_iterator
, TxSpends::const_iterator
> range
;
599 range
= mapTxSpends
.equal_range(outpoint
);
601 for (TxSpends::const_iterator it
= range
.first
; it
!= range
.second
; ++it
)
603 const uint256
& wtxid
= it
->second
;
604 std::map
<uint256
, CWalletTx
>::const_iterator mit
= mapWallet
.find(wtxid
);
605 if (mit
!= mapWallet
.end()) {
606 int depth
= mit
->second
.GetDepthInMainChain();
607 if (depth
> 0 || (depth
== 0 && !mit
->second
.isAbandoned()))
608 return true; // Spent
614 void CWallet::AddToSpends(const COutPoint
& outpoint
, const uint256
& wtxid
)
616 mapTxSpends
.insert(std::make_pair(outpoint
, wtxid
));
618 std::pair
<TxSpends::iterator
, TxSpends::iterator
> range
;
619 range
= mapTxSpends
.equal_range(outpoint
);
624 void CWallet::AddToSpends(const uint256
& wtxid
)
626 assert(mapWallet
.count(wtxid
));
627 CWalletTx
& thisTx
= mapWallet
[wtxid
];
628 if (thisTx
.IsCoinBase()) // Coinbases don't spend anything!
631 for (const CTxIn
& txin
: thisTx
.tx
->vin
)
632 AddToSpends(txin
.prevout
, wtxid
);
635 bool CWallet::EncryptWallet(const SecureString
& strWalletPassphrase
)
640 CKeyingMaterial _vMasterKey
;
642 _vMasterKey
.resize(WALLET_CRYPTO_KEY_SIZE
);
643 GetStrongRandBytes(&_vMasterKey
[0], WALLET_CRYPTO_KEY_SIZE
);
645 CMasterKey kMasterKey
;
647 kMasterKey
.vchSalt
.resize(WALLET_CRYPTO_SALT_SIZE
);
648 GetStrongRandBytes(&kMasterKey
.vchSalt
[0], WALLET_CRYPTO_SALT_SIZE
);
651 int64_t nStartTime
= GetTimeMillis();
652 crypter
.SetKeyFromPassphrase(strWalletPassphrase
, kMasterKey
.vchSalt
, 25000, kMasterKey
.nDerivationMethod
);
653 kMasterKey
.nDeriveIterations
= 2500000 / ((double)(GetTimeMillis() - nStartTime
));
655 nStartTime
= GetTimeMillis();
656 crypter
.SetKeyFromPassphrase(strWalletPassphrase
, kMasterKey
.vchSalt
, kMasterKey
.nDeriveIterations
, kMasterKey
.nDerivationMethod
);
657 kMasterKey
.nDeriveIterations
= (kMasterKey
.nDeriveIterations
+ kMasterKey
.nDeriveIterations
* 100 / ((double)(GetTimeMillis() - nStartTime
))) / 2;
659 if (kMasterKey
.nDeriveIterations
< 25000)
660 kMasterKey
.nDeriveIterations
= 25000;
662 LogPrintf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey
.nDeriveIterations
);
664 if (!crypter
.SetKeyFromPassphrase(strWalletPassphrase
, kMasterKey
.vchSalt
, kMasterKey
.nDeriveIterations
, kMasterKey
.nDerivationMethod
))
666 if (!crypter
.Encrypt(_vMasterKey
, kMasterKey
.vchCryptedKey
))
671 mapMasterKeys
[++nMasterKeyMaxID
] = kMasterKey
;
672 assert(!pwalletdbEncryption
);
673 pwalletdbEncryption
= new CWalletDB(*dbw
);
674 if (!pwalletdbEncryption
->TxnBegin()) {
675 delete pwalletdbEncryption
;
676 pwalletdbEncryption
= NULL
;
679 pwalletdbEncryption
->WriteMasterKey(nMasterKeyMaxID
, kMasterKey
);
681 if (!EncryptKeys(_vMasterKey
))
683 pwalletdbEncryption
->TxnAbort();
684 delete pwalletdbEncryption
;
685 // We now probably have half of our keys encrypted in memory, and half not...
686 // die and let the user reload the unencrypted wallet.
690 // Encryption was introduced in version 0.4.0
691 SetMinVersion(FEATURE_WALLETCRYPT
, pwalletdbEncryption
, true);
693 if (!pwalletdbEncryption
->TxnCommit()) {
694 delete pwalletdbEncryption
;
695 // We now have keys encrypted in memory, but not on disk...
696 // die to avoid confusion and let the user reload the unencrypted wallet.
700 delete pwalletdbEncryption
;
701 pwalletdbEncryption
= NULL
;
704 Unlock(strWalletPassphrase
);
706 // if we are using HD, replace the HD master key (seed) with a new one
708 if (!SetHDMasterKey(GenerateNewHDMasterKey())) {
716 // Need to completely rewrite the wallet file; if we don't, bdb might keep
717 // bits of the unencrypted private key in slack space in the database file.
721 NotifyStatusChanged(this);
726 DBErrors
CWallet::ReorderTransactions()
729 CWalletDB
walletdb(*dbw
);
731 // Old wallets didn't have any defined order for transactions
732 // Probably a bad idea to change the output of this
734 // First: get all CWalletTx and CAccountingEntry into a sorted-by-time multimap.
735 typedef std::pair
<CWalletTx
*, CAccountingEntry
*> TxPair
;
736 typedef std::multimap
<int64_t, TxPair
> TxItems
;
739 for (std::map
<uint256
, CWalletTx
>::iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); ++it
)
741 CWalletTx
* wtx
= &((*it
).second
);
742 txByTime
.insert(std::make_pair(wtx
->nTimeReceived
, TxPair(wtx
, (CAccountingEntry
*)0)));
744 std::list
<CAccountingEntry
> acentries
;
745 walletdb
.ListAccountCreditDebit("", acentries
);
746 for (CAccountingEntry
& entry
: acentries
)
748 txByTime
.insert(std::make_pair(entry
.nTime
, TxPair((CWalletTx
*)0, &entry
)));
752 std::vector
<int64_t> nOrderPosOffsets
;
753 for (TxItems::iterator it
= txByTime
.begin(); it
!= txByTime
.end(); ++it
)
755 CWalletTx
*const pwtx
= (*it
).second
.first
;
756 CAccountingEntry
*const pacentry
= (*it
).second
.second
;
757 int64_t& nOrderPos
= (pwtx
!= 0) ? pwtx
->nOrderPos
: pacentry
->nOrderPos
;
761 nOrderPos
= nOrderPosNext
++;
762 nOrderPosOffsets
.push_back(nOrderPos
);
766 if (!walletdb
.WriteTx(*pwtx
))
770 if (!walletdb
.WriteAccountingEntry(pacentry
->nEntryNo
, *pacentry
))
775 int64_t nOrderPosOff
= 0;
776 for (const int64_t& nOffsetStart
: nOrderPosOffsets
)
778 if (nOrderPos
>= nOffsetStart
)
781 nOrderPos
+= nOrderPosOff
;
782 nOrderPosNext
= std::max(nOrderPosNext
, nOrderPos
+ 1);
787 // Since we're changing the order, write it back
790 if (!walletdb
.WriteTx(*pwtx
))
794 if (!walletdb
.WriteAccountingEntry(pacentry
->nEntryNo
, *pacentry
))
798 walletdb
.WriteOrderPosNext(nOrderPosNext
);
803 int64_t CWallet::IncOrderPosNext(CWalletDB
*pwalletdb
)
805 AssertLockHeld(cs_wallet
); // nOrderPosNext
806 int64_t nRet
= nOrderPosNext
++;
808 pwalletdb
->WriteOrderPosNext(nOrderPosNext
);
810 CWalletDB(*dbw
).WriteOrderPosNext(nOrderPosNext
);
815 bool CWallet::AccountMove(std::string strFrom
, std::string strTo
, CAmount nAmount
, std::string strComment
)
817 CWalletDB
walletdb(*dbw
);
818 if (!walletdb
.TxnBegin())
821 int64_t nNow
= GetAdjustedTime();
824 CAccountingEntry debit
;
825 debit
.nOrderPos
= IncOrderPosNext(&walletdb
);
826 debit
.strAccount
= strFrom
;
827 debit
.nCreditDebit
= -nAmount
;
829 debit
.strOtherAccount
= strTo
;
830 debit
.strComment
= strComment
;
831 AddAccountingEntry(debit
, &walletdb
);
834 CAccountingEntry credit
;
835 credit
.nOrderPos
= IncOrderPosNext(&walletdb
);
836 credit
.strAccount
= strTo
;
837 credit
.nCreditDebit
= nAmount
;
839 credit
.strOtherAccount
= strFrom
;
840 credit
.strComment
= strComment
;
841 AddAccountingEntry(credit
, &walletdb
);
843 if (!walletdb
.TxnCommit())
849 bool CWallet::GetAccountPubkey(CPubKey
&pubKey
, std::string strAccount
, bool bForceNew
)
851 CWalletDB
walletdb(*dbw
);
854 walletdb
.ReadAccount(strAccount
, account
);
857 if (!account
.vchPubKey
.IsValid())
860 // Check if the current key has been used
861 CScript scriptPubKey
= GetScriptForDestination(account
.vchPubKey
.GetID());
862 for (std::map
<uint256
, CWalletTx
>::iterator it
= mapWallet
.begin();
863 it
!= mapWallet
.end() && account
.vchPubKey
.IsValid();
865 for (const CTxOut
& txout
: (*it
).second
.tx
->vout
)
866 if (txout
.scriptPubKey
== scriptPubKey
) {
873 // Generate a new key
875 if (!GetKeyFromPool(account
.vchPubKey
, false))
878 SetAddressBook(account
.vchPubKey
.GetID(), strAccount
, "receive");
879 walletdb
.WriteAccount(strAccount
, account
);
882 pubKey
= account
.vchPubKey
;
887 void CWallet::MarkDirty()
891 for (std::pair
<const uint256
, CWalletTx
>& item
: mapWallet
)
892 item
.second
.MarkDirty();
896 bool CWallet::MarkReplaced(const uint256
& originalHash
, const uint256
& newHash
)
900 auto mi
= mapWallet
.find(originalHash
);
902 // There is a bug if MarkReplaced is not called on an existing wallet transaction.
903 assert(mi
!= mapWallet
.end());
905 CWalletTx
& wtx
= (*mi
).second
;
907 // Ensure for now that we're not overwriting data
908 assert(wtx
.mapValue
.count("replaced_by_txid") == 0);
910 wtx
.mapValue
["replaced_by_txid"] = newHash
.ToString();
912 CWalletDB
walletdb(*dbw
, "r+");
915 if (!walletdb
.WriteTx(wtx
)) {
916 LogPrintf("%s: Updating walletdb tx %s failed", __func__
, wtx
.GetHash().ToString());
920 NotifyTransactionChanged(this, originalHash
, CT_UPDATED
);
925 bool CWallet::AddToWallet(const CWalletTx
& wtxIn
, bool fFlushOnClose
)
929 CWalletDB
walletdb(*dbw
, "r+", fFlushOnClose
);
931 uint256 hash
= wtxIn
.GetHash();
933 // Inserts only if not already there, returns tx inserted or tx found
934 std::pair
<std::map
<uint256
, CWalletTx
>::iterator
, bool> ret
= mapWallet
.insert(std::make_pair(hash
, wtxIn
));
935 CWalletTx
& wtx
= (*ret
.first
).second
;
936 wtx
.BindWallet(this);
937 bool fInsertedNew
= ret
.second
;
940 wtx
.nTimeReceived
= GetAdjustedTime();
941 wtx
.nOrderPos
= IncOrderPosNext(&walletdb
);
942 wtxOrdered
.insert(std::make_pair(wtx
.nOrderPos
, TxPair(&wtx
, (CAccountingEntry
*)0)));
943 wtx
.nTimeSmart
= ComputeTimeSmart(wtx
);
947 bool fUpdated
= false;
951 if (!wtxIn
.hashUnset() && wtxIn
.hashBlock
!= wtx
.hashBlock
)
953 wtx
.hashBlock
= wtxIn
.hashBlock
;
956 // If no longer abandoned, update
957 if (wtxIn
.hashBlock
.IsNull() && wtx
.isAbandoned())
959 wtx
.hashBlock
= wtxIn
.hashBlock
;
962 if (wtxIn
.nIndex
!= -1 && (wtxIn
.nIndex
!= wtx
.nIndex
))
964 wtx
.nIndex
= wtxIn
.nIndex
;
967 if (wtxIn
.fFromMe
&& wtxIn
.fFromMe
!= wtx
.fFromMe
)
969 wtx
.fFromMe
= wtxIn
.fFromMe
;
975 LogPrintf("AddToWallet %s %s%s\n", wtxIn
.GetHash().ToString(), (fInsertedNew
? "new" : ""), (fUpdated
? "update" : ""));
978 if (fInsertedNew
|| fUpdated
)
979 if (!walletdb
.WriteTx(wtx
))
982 // Break debit/credit balance caches:
985 // Notify UI of new or updated transaction
986 NotifyTransactionChanged(this, hash
, fInsertedNew
? CT_NEW
: CT_UPDATED
);
988 // notify an external script when a wallet transaction comes in or is updated
989 std::string strCmd
= GetArg("-walletnotify", "");
991 if ( !strCmd
.empty())
993 boost::replace_all(strCmd
, "%s", wtxIn
.GetHash().GetHex());
994 boost::thread
t(runCommand
, strCmd
); // thread runs free
1000 bool CWallet::LoadToWallet(const CWalletTx
& wtxIn
)
1002 uint256 hash
= wtxIn
.GetHash();
1004 mapWallet
[hash
] = wtxIn
;
1005 CWalletTx
& wtx
= mapWallet
[hash
];
1006 wtx
.BindWallet(this);
1007 wtxOrdered
.insert(std::make_pair(wtx
.nOrderPos
, TxPair(&wtx
, (CAccountingEntry
*)0)));
1009 for (const CTxIn
& txin
: wtx
.tx
->vin
) {
1010 if (mapWallet
.count(txin
.prevout
.hash
)) {
1011 CWalletTx
& prevtx
= mapWallet
[txin
.prevout
.hash
];
1012 if (prevtx
.nIndex
== -1 && !prevtx
.hashUnset()) {
1013 MarkConflicted(prevtx
.hashBlock
, wtx
.GetHash());
1022 * Add a transaction to the wallet, or update it. pIndex and posInBlock should
1023 * be set when the transaction was known to be included in a block. When
1024 * pIndex == NULL, then wallet state is not updated in AddToWallet, but
1025 * notifications happen and cached balances are marked dirty.
1027 * If fUpdate is true, existing transactions will be updated.
1028 * TODO: One exception to this is that the abandoned state is cleared under the
1029 * assumption that any further notification of a transaction that was considered
1030 * abandoned is an indication that it is not safe to be considered abandoned.
1031 * Abandoned state should probably be more carefully tracked via different
1032 * posInBlock signals or by checking mempool presence when necessary.
1034 bool CWallet::AddToWalletIfInvolvingMe(const CTransactionRef
& ptx
, const CBlockIndex
* pIndex
, int posInBlock
, bool fUpdate
)
1036 const CTransaction
& tx
= *ptx
;
1038 AssertLockHeld(cs_wallet
);
1040 if (pIndex
!= NULL
) {
1041 for (const CTxIn
& txin
: tx
.vin
) {
1042 std::pair
<TxSpends::const_iterator
, TxSpends::const_iterator
> range
= mapTxSpends
.equal_range(txin
.prevout
);
1043 while (range
.first
!= range
.second
) {
1044 if (range
.first
->second
!= tx
.GetHash()) {
1045 LogPrintf("Transaction %s (in block %s) conflicts with wallet transaction %s (both spend %s:%i)\n", tx
.GetHash().ToString(), pIndex
->GetBlockHash().ToString(), range
.first
->second
.ToString(), range
.first
->first
.hash
.ToString(), range
.first
->first
.n
);
1046 MarkConflicted(pIndex
->GetBlockHash(), range
.first
->second
);
1053 bool fExisted
= mapWallet
.count(tx
.GetHash()) != 0;
1054 if (fExisted
&& !fUpdate
) return false;
1055 if (fExisted
|| IsMine(tx
) || IsFromMe(tx
))
1057 /* Check if any keys in the wallet keypool that were supposed to be unused
1058 * have appeared in a new transaction. If so, remove those keys from the keypool.
1059 * This can happen when restoring an old wallet backup that does not contain
1060 * the mostly recently created transactions from newer versions of the wallet.
1063 // loop though all outputs
1064 for (const CTxOut
& txout
: tx
.vout
) {
1065 // extract addresses and check if they match with an unused keypool key
1066 std::vector
<CKeyID
> vAffected
;
1067 CAffectedKeysVisitor(*this, vAffected
).Process(txout
.scriptPubKey
);
1068 for (const CKeyID
&keyid
: vAffected
) {
1069 std::map
<CKeyID
, int64_t>::const_iterator mi
= m_pool_key_to_index
.find(keyid
);
1070 if (mi
!= m_pool_key_to_index
.end()) {
1071 LogPrintf("%s: Detected a used keypool key, mark all keypool key up to this key as used\n", __func__
);
1072 MarkReserveKeysAsUsed(mi
->second
);
1074 if (!TopUpKeyPool()) {
1075 LogPrintf("%s: Topping up keypool failed (locked wallet)\n", __func__
);
1081 CWalletTx
wtx(this, ptx
);
1083 // Get merkle branch if transaction was found in a block
1085 wtx
.SetMerkleBranch(pIndex
, posInBlock
);
1087 return AddToWallet(wtx
, false);
1093 bool CWallet::TransactionCanBeAbandoned(const uint256
& hashTx
) const
1095 LOCK2(cs_main
, cs_wallet
);
1096 const CWalletTx
* wtx
= GetWalletTx(hashTx
);
1097 return wtx
&& !wtx
->isAbandoned() && wtx
->GetDepthInMainChain() <= 0 && !wtx
->InMempool();
1100 bool CWallet::AbandonTransaction(const uint256
& hashTx
)
1102 LOCK2(cs_main
, cs_wallet
);
1104 CWalletDB
walletdb(*dbw
, "r+");
1106 std::set
<uint256
> todo
;
1107 std::set
<uint256
> done
;
1109 // Can't mark abandoned if confirmed or in mempool
1110 assert(mapWallet
.count(hashTx
));
1111 CWalletTx
& origtx
= mapWallet
[hashTx
];
1112 if (origtx
.GetDepthInMainChain() > 0 || origtx
.InMempool()) {
1116 todo
.insert(hashTx
);
1118 while (!todo
.empty()) {
1119 uint256 now
= *todo
.begin();
1122 assert(mapWallet
.count(now
));
1123 CWalletTx
& wtx
= mapWallet
[now
];
1124 int currentconfirm
= wtx
.GetDepthInMainChain();
1125 // If the orig tx was not in block, none of its spends can be
1126 assert(currentconfirm
<= 0);
1127 // if (currentconfirm < 0) {Tx and spends are already conflicted, no need to abandon}
1128 if (currentconfirm
== 0 && !wtx
.isAbandoned()) {
1129 // If the orig tx was not in block/mempool, none of its spends can be in mempool
1130 assert(!wtx
.InMempool());
1134 walletdb
.WriteTx(wtx
);
1135 NotifyTransactionChanged(this, wtx
.GetHash(), CT_UPDATED
);
1136 // Iterate over all its outputs, and mark transactions in the wallet that spend them abandoned too
1137 TxSpends::const_iterator iter
= mapTxSpends
.lower_bound(COutPoint(hashTx
, 0));
1138 while (iter
!= mapTxSpends
.end() && iter
->first
.hash
== now
) {
1139 if (!done
.count(iter
->second
)) {
1140 todo
.insert(iter
->second
);
1144 // If a transaction changes 'conflicted' state, that changes the balance
1145 // available of the outputs it spends. So force those to be recomputed
1146 for (const CTxIn
& txin
: wtx
.tx
->vin
)
1148 if (mapWallet
.count(txin
.prevout
.hash
))
1149 mapWallet
[txin
.prevout
.hash
].MarkDirty();
1157 void CWallet::MarkConflicted(const uint256
& hashBlock
, const uint256
& hashTx
)
1159 LOCK2(cs_main
, cs_wallet
);
1161 int conflictconfirms
= 0;
1162 if (mapBlockIndex
.count(hashBlock
)) {
1163 CBlockIndex
* pindex
= mapBlockIndex
[hashBlock
];
1164 if (chainActive
.Contains(pindex
)) {
1165 conflictconfirms
= -(chainActive
.Height() - pindex
->nHeight
+ 1);
1168 // If number of conflict confirms cannot be determined, this means
1169 // that the block is still unknown or not yet part of the main chain,
1170 // for example when loading the wallet during a reindex. Do nothing in that
1172 if (conflictconfirms
>= 0)
1175 // Do not flush the wallet here for performance reasons
1176 CWalletDB
walletdb(*dbw
, "r+", false);
1178 std::set
<uint256
> todo
;
1179 std::set
<uint256
> done
;
1181 todo
.insert(hashTx
);
1183 while (!todo
.empty()) {
1184 uint256 now
= *todo
.begin();
1187 assert(mapWallet
.count(now
));
1188 CWalletTx
& wtx
= mapWallet
[now
];
1189 int currentconfirm
= wtx
.GetDepthInMainChain();
1190 if (conflictconfirms
< currentconfirm
) {
1191 // Block is 'more conflicted' than current confirm; update.
1192 // Mark transaction as conflicted with this block.
1194 wtx
.hashBlock
= hashBlock
;
1196 walletdb
.WriteTx(wtx
);
1197 // Iterate over all its outputs, and mark transactions in the wallet that spend them conflicted too
1198 TxSpends::const_iterator iter
= mapTxSpends
.lower_bound(COutPoint(now
, 0));
1199 while (iter
!= mapTxSpends
.end() && iter
->first
.hash
== now
) {
1200 if (!done
.count(iter
->second
)) {
1201 todo
.insert(iter
->second
);
1205 // If a transaction changes 'conflicted' state, that changes the balance
1206 // available of the outputs it spends. So force those to be recomputed
1207 for (const CTxIn
& txin
: wtx
.tx
->vin
)
1209 if (mapWallet
.count(txin
.prevout
.hash
))
1210 mapWallet
[txin
.prevout
.hash
].MarkDirty();
1216 void CWallet::SyncTransaction(const CTransactionRef
& ptx
, const CBlockIndex
*pindex
, int posInBlock
) {
1217 const CTransaction
& tx
= *ptx
;
1219 if (!AddToWalletIfInvolvingMe(ptx
, pindex
, posInBlock
, true))
1220 return; // Not one of ours
1222 // If a transaction changes 'conflicted' state, that changes the balance
1223 // available of the outputs it spends. So force those to be
1224 // recomputed, also:
1225 for (const CTxIn
& txin
: tx
.vin
)
1227 if (mapWallet
.count(txin
.prevout
.hash
))
1228 mapWallet
[txin
.prevout
.hash
].MarkDirty();
1232 void CWallet::TransactionAddedToMempool(const CTransactionRef
& ptx
) {
1233 LOCK2(cs_main
, cs_wallet
);
1234 SyncTransaction(ptx
);
1237 void CWallet::BlockConnected(const std::shared_ptr
<const CBlock
>& pblock
, const CBlockIndex
*pindex
, const std::vector
<CTransactionRef
>& vtxConflicted
) {
1238 LOCK2(cs_main
, cs_wallet
);
1239 // TODO: Temporarily ensure that mempool removals are notified before
1240 // connected transactions. This shouldn't matter, but the abandoned
1241 // state of transactions in our wallet is currently cleared when we
1242 // receive another notification and there is a race condition where
1243 // notification of a connected conflict might cause an outside process
1244 // to abandon a transaction and then have it inadvertently cleared by
1245 // the notification that the conflicted transaction was evicted.
1247 for (const CTransactionRef
& ptx
: vtxConflicted
) {
1248 SyncTransaction(ptx
);
1250 for (size_t i
= 0; i
< pblock
->vtx
.size(); i
++) {
1251 SyncTransaction(pblock
->vtx
[i
], pindex
, i
);
1255 void CWallet::BlockDisconnected(const std::shared_ptr
<const CBlock
>& pblock
) {
1256 LOCK2(cs_main
, cs_wallet
);
1258 for (const CTransactionRef
& ptx
: pblock
->vtx
) {
1259 SyncTransaction(ptx
);
1265 isminetype
CWallet::IsMine(const CTxIn
&txin
) const
1269 std::map
<uint256
, CWalletTx
>::const_iterator mi
= mapWallet
.find(txin
.prevout
.hash
);
1270 if (mi
!= mapWallet
.end())
1272 const CWalletTx
& prev
= (*mi
).second
;
1273 if (txin
.prevout
.n
< prev
.tx
->vout
.size())
1274 return IsMine(prev
.tx
->vout
[txin
.prevout
.n
]);
1280 // Note that this function doesn't distinguish between a 0-valued input,
1281 // and a not-"is mine" (according to the filter) input.
1282 CAmount
CWallet::GetDebit(const CTxIn
&txin
, const isminefilter
& filter
) const
1286 std::map
<uint256
, CWalletTx
>::const_iterator mi
= mapWallet
.find(txin
.prevout
.hash
);
1287 if (mi
!= mapWallet
.end())
1289 const CWalletTx
& prev
= (*mi
).second
;
1290 if (txin
.prevout
.n
< prev
.tx
->vout
.size())
1291 if (IsMine(prev
.tx
->vout
[txin
.prevout
.n
]) & filter
)
1292 return prev
.tx
->vout
[txin
.prevout
.n
].nValue
;
1298 isminetype
CWallet::IsMine(const CTxOut
& txout
) const
1300 return ::IsMine(*this, txout
.scriptPubKey
);
1303 CAmount
CWallet::GetCredit(const CTxOut
& txout
, const isminefilter
& filter
) const
1305 if (!MoneyRange(txout
.nValue
))
1306 throw std::runtime_error(std::string(__func__
) + ": value out of range");
1307 return ((IsMine(txout
) & filter
) ? txout
.nValue
: 0);
1310 bool CWallet::IsChange(const CTxOut
& txout
) const
1312 // TODO: fix handling of 'change' outputs. The assumption is that any
1313 // payment to a script that is ours, but is not in the address book
1314 // is change. That assumption is likely to break when we implement multisignature
1315 // wallets that return change back into a multi-signature-protected address;
1316 // a better way of identifying which outputs are 'the send' and which are
1317 // 'the change' will need to be implemented (maybe extend CWalletTx to remember
1318 // which output, if any, was change).
1319 if (::IsMine(*this, txout
.scriptPubKey
))
1321 CTxDestination address
;
1322 if (!ExtractDestination(txout
.scriptPubKey
, address
))
1326 if (!mapAddressBook
.count(address
))
1332 CAmount
CWallet::GetChange(const CTxOut
& txout
) const
1334 if (!MoneyRange(txout
.nValue
))
1335 throw std::runtime_error(std::string(__func__
) + ": value out of range");
1336 return (IsChange(txout
) ? txout
.nValue
: 0);
1339 bool CWallet::IsMine(const CTransaction
& tx
) const
1341 for (const CTxOut
& txout
: tx
.vout
)
1347 bool CWallet::IsFromMe(const CTransaction
& tx
) const
1349 return (GetDebit(tx
, ISMINE_ALL
) > 0);
1352 CAmount
CWallet::GetDebit(const CTransaction
& tx
, const isminefilter
& filter
) const
1355 for (const CTxIn
& txin
: tx
.vin
)
1357 nDebit
+= GetDebit(txin
, filter
);
1358 if (!MoneyRange(nDebit
))
1359 throw std::runtime_error(std::string(__func__
) + ": value out of range");
1364 bool CWallet::IsAllFromMe(const CTransaction
& tx
, const isminefilter
& filter
) const
1368 for (const CTxIn
& txin
: tx
.vin
)
1370 auto mi
= mapWallet
.find(txin
.prevout
.hash
);
1371 if (mi
== mapWallet
.end())
1372 return false; // any unknown inputs can't be from us
1374 const CWalletTx
& prev
= (*mi
).second
;
1376 if (txin
.prevout
.n
>= prev
.tx
->vout
.size())
1377 return false; // invalid input!
1379 if (!(IsMine(prev
.tx
->vout
[txin
.prevout
.n
]) & filter
))
1385 CAmount
CWallet::GetCredit(const CTransaction
& tx
, const isminefilter
& filter
) const
1387 CAmount nCredit
= 0;
1388 for (const CTxOut
& txout
: tx
.vout
)
1390 nCredit
+= GetCredit(txout
, filter
);
1391 if (!MoneyRange(nCredit
))
1392 throw std::runtime_error(std::string(__func__
) + ": value out of range");
1397 CAmount
CWallet::GetChange(const CTransaction
& tx
) const
1399 CAmount nChange
= 0;
1400 for (const CTxOut
& txout
: tx
.vout
)
1402 nChange
+= GetChange(txout
);
1403 if (!MoneyRange(nChange
))
1404 throw std::runtime_error(std::string(__func__
) + ": value out of range");
1409 CPubKey
CWallet::GenerateNewHDMasterKey()
1412 key
.MakeNewKey(true);
1414 int64_t nCreationTime
= GetTime();
1415 CKeyMetadata
metadata(nCreationTime
);
1417 // calculate the pubkey
1418 CPubKey pubkey
= key
.GetPubKey();
1419 assert(key
.VerifyPubKey(pubkey
));
1421 // set the hd keypath to "m" -> Master, refers the masterkeyid to itself
1422 metadata
.hdKeypath
= "m";
1423 metadata
.hdMasterKeyID
= pubkey
.GetID();
1428 // mem store the metadata
1429 mapKeyMetadata
[pubkey
.GetID()] = metadata
;
1431 // write the key&metadata to the database
1432 if (!AddKeyPubKey(key
, pubkey
))
1433 throw std::runtime_error(std::string(__func__
) + ": AddKeyPubKey failed");
1439 bool CWallet::SetHDMasterKey(const CPubKey
& pubkey
)
1442 // store the keyid (hash160) together with
1443 // the child index counter in the database
1444 // as a hdchain object
1445 CHDChain newHdChain
;
1446 newHdChain
.nVersion
= CanSupportFeature(FEATURE_HD_SPLIT
) ? CHDChain::VERSION_HD_CHAIN_SPLIT
: CHDChain::VERSION_HD_BASE
;
1447 newHdChain
.masterKeyID
= pubkey
.GetID();
1448 SetHDChain(newHdChain
, false);
1453 bool CWallet::SetHDChain(const CHDChain
& chain
, bool memonly
)
1456 if (!memonly
&& !CWalletDB(*dbw
).WriteHDChain(chain
))
1457 throw std::runtime_error(std::string(__func__
) + ": writing chain failed");
1463 bool CWallet::IsHDEnabled() const
1465 return !hdChain
.masterKeyID
.IsNull();
1468 int64_t CWalletTx::GetTxTime() const
1470 int64_t n
= nTimeSmart
;
1471 return n
? n
: nTimeReceived
;
1474 int CWalletTx::GetRequestCount() const
1476 // Returns -1 if it wasn't being tracked
1479 LOCK(pwallet
->cs_wallet
);
1485 std::map
<uint256
, int>::const_iterator mi
= pwallet
->mapRequestCount
.find(hashBlock
);
1486 if (mi
!= pwallet
->mapRequestCount
.end())
1487 nRequests
= (*mi
).second
;
1492 // Did anyone request this transaction?
1493 std::map
<uint256
, int>::const_iterator mi
= pwallet
->mapRequestCount
.find(GetHash());
1494 if (mi
!= pwallet
->mapRequestCount
.end())
1496 nRequests
= (*mi
).second
;
1498 // How about the block it's in?
1499 if (nRequests
== 0 && !hashUnset())
1501 std::map
<uint256
, int>::const_iterator _mi
= pwallet
->mapRequestCount
.find(hashBlock
);
1502 if (_mi
!= pwallet
->mapRequestCount
.end())
1503 nRequests
= (*_mi
).second
;
1505 nRequests
= 1; // If it's in someone else's block it must have got out
1513 void CWalletTx::GetAmounts(std::list
<COutputEntry
>& listReceived
,
1514 std::list
<COutputEntry
>& listSent
, CAmount
& nFee
, std::string
& strSentAccount
, const isminefilter
& filter
) const
1517 listReceived
.clear();
1519 strSentAccount
= strFromAccount
;
1522 CAmount nDebit
= GetDebit(filter
);
1523 if (nDebit
> 0) // debit>0 means we signed/sent this transaction
1525 CAmount nValueOut
= tx
->GetValueOut();
1526 nFee
= nDebit
- nValueOut
;
1530 for (unsigned int i
= 0; i
< tx
->vout
.size(); ++i
)
1532 const CTxOut
& txout
= tx
->vout
[i
];
1533 isminetype fIsMine
= pwallet
->IsMine(txout
);
1534 // Only need to handle txouts if AT LEAST one of these is true:
1535 // 1) they debit from us (sent)
1536 // 2) the output is to us (received)
1539 // Don't report 'change' txouts
1540 if (pwallet
->IsChange(txout
))
1543 else if (!(fIsMine
& filter
))
1546 // In either case, we need to get the destination address
1547 CTxDestination address
;
1549 if (!ExtractDestination(txout
.scriptPubKey
, address
) && !txout
.scriptPubKey
.IsUnspendable())
1551 LogPrintf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
1552 this->GetHash().ToString());
1553 address
= CNoDestination();
1556 COutputEntry output
= {address
, txout
.nValue
, (int)i
};
1558 // If we are debited by the transaction, add the output as a "sent" entry
1560 listSent
.push_back(output
);
1562 // If we are receiving the output, add it as a "received" entry
1563 if (fIsMine
& filter
)
1564 listReceived
.push_back(output
);
1570 * Scan active chain for relevant transactions after importing keys. This should
1571 * be called whenever new keys are added to the wallet, with the oldest key
1574 * @return Earliest timestamp that could be successfully scanned from. Timestamp
1575 * returned will be higher than startTime if relevant blocks could not be read.
1577 int64_t CWallet::RescanFromTime(int64_t startTime
, bool update
)
1579 AssertLockHeld(cs_main
);
1580 AssertLockHeld(cs_wallet
);
1582 // Find starting block. May be null if nCreateTime is greater than the
1583 // highest blockchain timestamp, in which case there is nothing that needs
1585 CBlockIndex
* const startBlock
= chainActive
.FindEarliestAtLeast(startTime
- TIMESTAMP_WINDOW
);
1586 LogPrintf("%s: Rescanning last %i blocks\n", __func__
, startBlock
? chainActive
.Height() - startBlock
->nHeight
+ 1 : 0);
1589 const CBlockIndex
* const failedBlock
= ScanForWalletTransactions(startBlock
, update
);
1591 return failedBlock
->GetBlockTimeMax() + TIMESTAMP_WINDOW
+ 1;
1598 * Scan the block chain (starting in pindexStart) for transactions
1599 * from or to us. If fUpdate is true, found transactions that already
1600 * exist in the wallet will be updated.
1602 * Returns null if scan was successful. Otherwise, if a complete rescan was not
1603 * possible (due to pruning or corruption), returns pointer to the most recent
1604 * block that could not be scanned.
1606 CBlockIndex
* CWallet::ScanForWalletTransactions(CBlockIndex
* pindexStart
, bool fUpdate
)
1608 int64_t nNow
= GetTime();
1609 const CChainParams
& chainParams
= Params();
1611 CBlockIndex
* pindex
= pindexStart
;
1612 CBlockIndex
* ret
= nullptr;
1614 LOCK2(cs_main
, cs_wallet
);
1615 fAbortRescan
= false;
1616 fScanningWallet
= true;
1618 ShowProgress(_("Rescanning..."), 0); // show rescan progress in GUI as dialog or on splashscreen, if -rescan on startup
1619 double dProgressStart
= GuessVerificationProgress(chainParams
.TxData(), pindex
);
1620 double dProgressTip
= GuessVerificationProgress(chainParams
.TxData(), chainActive
.Tip());
1621 while (pindex
&& !fAbortRescan
)
1623 if (pindex
->nHeight
% 100 == 0 && dProgressTip
- dProgressStart
> 0.0)
1624 ShowProgress(_("Rescanning..."), std::max(1, std::min(99, (int)((GuessVerificationProgress(chainParams
.TxData(), pindex
) - dProgressStart
) / (dProgressTip
- dProgressStart
) * 100))));
1625 if (GetTime() >= nNow
+ 60) {
1627 LogPrintf("Still rescanning. At block %d. Progress=%f\n", pindex
->nHeight
, GuessVerificationProgress(chainParams
.TxData(), pindex
));
1631 if (ReadBlockFromDisk(block
, pindex
, Params().GetConsensus())) {
1632 for (size_t posInBlock
= 0; posInBlock
< block
.vtx
.size(); ++posInBlock
) {
1633 AddToWalletIfInvolvingMe(block
.vtx
[posInBlock
], pindex
, posInBlock
, fUpdate
);
1638 pindex
= chainActive
.Next(pindex
);
1640 if (pindex
&& fAbortRescan
) {
1641 LogPrintf("Rescan aborted at block %d. Progress=%f\n", pindex
->nHeight
, GuessVerificationProgress(chainParams
.TxData(), pindex
));
1643 ShowProgress(_("Rescanning..."), 100); // hide progress dialog in GUI
1645 fScanningWallet
= false;
1650 void CWallet::ReacceptWalletTransactions()
1652 // If transactions aren't being broadcasted, don't let them into local mempool either
1653 if (!fBroadcastTransactions
)
1655 LOCK2(cs_main
, cs_wallet
);
1656 std::map
<int64_t, CWalletTx
*> mapSorted
;
1658 // Sort pending wallet transactions based on their initial wallet insertion order
1659 for (std::pair
<const uint256
, CWalletTx
>& item
: mapWallet
)
1661 const uint256
& wtxid
= item
.first
;
1662 CWalletTx
& wtx
= item
.second
;
1663 assert(wtx
.GetHash() == wtxid
);
1665 int nDepth
= wtx
.GetDepthInMainChain();
1667 if (!wtx
.IsCoinBase() && (nDepth
== 0 && !wtx
.isAbandoned())) {
1668 mapSorted
.insert(std::make_pair(wtx
.nOrderPos
, &wtx
));
1672 // Try to add wallet transactions to memory pool
1673 for (std::pair
<const int64_t, CWalletTx
*>& item
: mapSorted
)
1675 CWalletTx
& wtx
= *(item
.second
);
1678 CValidationState state
;
1679 wtx
.AcceptToMemoryPool(maxTxFee
, state
);
1683 bool CWalletTx::RelayWalletTransaction(CConnman
* connman
)
1685 assert(pwallet
->GetBroadcastTransactions());
1686 if (!IsCoinBase() && !isAbandoned() && GetDepthInMainChain() == 0)
1688 CValidationState state
;
1689 /* GetDepthInMainChain already catches known conflicts. */
1690 if (InMempool() || AcceptToMemoryPool(maxTxFee
, state
)) {
1691 LogPrintf("Relaying wtx %s\n", GetHash().ToString());
1693 CInv
inv(MSG_TX
, GetHash());
1694 connman
->ForEachNode([&inv
](CNode
* pnode
)
1696 pnode
->PushInventory(inv
);
1705 std::set
<uint256
> CWalletTx::GetConflicts() const
1707 std::set
<uint256
> result
;
1708 if (pwallet
!= NULL
)
1710 uint256 myHash
= GetHash();
1711 result
= pwallet
->GetConflicts(myHash
);
1712 result
.erase(myHash
);
1717 CAmount
CWalletTx::GetDebit(const isminefilter
& filter
) const
1719 if (tx
->vin
.empty())
1723 if(filter
& ISMINE_SPENDABLE
)
1726 debit
+= nDebitCached
;
1729 nDebitCached
= pwallet
->GetDebit(*this, ISMINE_SPENDABLE
);
1730 fDebitCached
= true;
1731 debit
+= nDebitCached
;
1734 if(filter
& ISMINE_WATCH_ONLY
)
1736 if(fWatchDebitCached
)
1737 debit
+= nWatchDebitCached
;
1740 nWatchDebitCached
= pwallet
->GetDebit(*this, ISMINE_WATCH_ONLY
);
1741 fWatchDebitCached
= true;
1742 debit
+= nWatchDebitCached
;
1748 CAmount
CWalletTx::GetCredit(const isminefilter
& filter
) const
1750 // Must wait until coinbase is safely deep enough in the chain before valuing it
1751 if (IsCoinBase() && GetBlocksToMaturity() > 0)
1755 if (filter
& ISMINE_SPENDABLE
)
1757 // GetBalance can assume transactions in mapWallet won't change
1759 credit
+= nCreditCached
;
1762 nCreditCached
= pwallet
->GetCredit(*this, ISMINE_SPENDABLE
);
1763 fCreditCached
= true;
1764 credit
+= nCreditCached
;
1767 if (filter
& ISMINE_WATCH_ONLY
)
1769 if (fWatchCreditCached
)
1770 credit
+= nWatchCreditCached
;
1773 nWatchCreditCached
= pwallet
->GetCredit(*this, ISMINE_WATCH_ONLY
);
1774 fWatchCreditCached
= true;
1775 credit
+= nWatchCreditCached
;
1781 CAmount
CWalletTx::GetImmatureCredit(bool fUseCache
) const
1783 if (IsCoinBase() && GetBlocksToMaturity() > 0 && IsInMainChain())
1785 if (fUseCache
&& fImmatureCreditCached
)
1786 return nImmatureCreditCached
;
1787 nImmatureCreditCached
= pwallet
->GetCredit(*this, ISMINE_SPENDABLE
);
1788 fImmatureCreditCached
= true;
1789 return nImmatureCreditCached
;
1795 CAmount
CWalletTx::GetAvailableCredit(bool fUseCache
) const
1800 // Must wait until coinbase is safely deep enough in the chain before valuing it
1801 if (IsCoinBase() && GetBlocksToMaturity() > 0)
1804 if (fUseCache
&& fAvailableCreditCached
)
1805 return nAvailableCreditCached
;
1807 CAmount nCredit
= 0;
1808 uint256 hashTx
= GetHash();
1809 for (unsigned int i
= 0; i
< tx
->vout
.size(); i
++)
1811 if (!pwallet
->IsSpent(hashTx
, i
))
1813 const CTxOut
&txout
= tx
->vout
[i
];
1814 nCredit
+= pwallet
->GetCredit(txout
, ISMINE_SPENDABLE
);
1815 if (!MoneyRange(nCredit
))
1816 throw std::runtime_error(std::string(__func__
) + " : value out of range");
1820 nAvailableCreditCached
= nCredit
;
1821 fAvailableCreditCached
= true;
1825 CAmount
CWalletTx::GetImmatureWatchOnlyCredit(const bool& fUseCache
) const
1827 if (IsCoinBase() && GetBlocksToMaturity() > 0 && IsInMainChain())
1829 if (fUseCache
&& fImmatureWatchCreditCached
)
1830 return nImmatureWatchCreditCached
;
1831 nImmatureWatchCreditCached
= pwallet
->GetCredit(*this, ISMINE_WATCH_ONLY
);
1832 fImmatureWatchCreditCached
= true;
1833 return nImmatureWatchCreditCached
;
1839 CAmount
CWalletTx::GetAvailableWatchOnlyCredit(const bool& fUseCache
) const
1844 // Must wait until coinbase is safely deep enough in the chain before valuing it
1845 if (IsCoinBase() && GetBlocksToMaturity() > 0)
1848 if (fUseCache
&& fAvailableWatchCreditCached
)
1849 return nAvailableWatchCreditCached
;
1851 CAmount nCredit
= 0;
1852 for (unsigned int i
= 0; i
< tx
->vout
.size(); i
++)
1854 if (!pwallet
->IsSpent(GetHash(), i
))
1856 const CTxOut
&txout
= tx
->vout
[i
];
1857 nCredit
+= pwallet
->GetCredit(txout
, ISMINE_WATCH_ONLY
);
1858 if (!MoneyRange(nCredit
))
1859 throw std::runtime_error(std::string(__func__
) + ": value out of range");
1863 nAvailableWatchCreditCached
= nCredit
;
1864 fAvailableWatchCreditCached
= true;
1868 CAmount
CWalletTx::GetChange() const
1871 return nChangeCached
;
1872 nChangeCached
= pwallet
->GetChange(*this);
1873 fChangeCached
= true;
1874 return nChangeCached
;
1877 bool CWalletTx::InMempool() const
1880 return mempool
.exists(GetHash());
1883 bool CWalletTx::IsTrusted() const
1885 // Quick answer in most cases
1886 if (!CheckFinalTx(*this))
1888 int nDepth
= GetDepthInMainChain();
1893 if (!bSpendZeroConfChange
|| !IsFromMe(ISMINE_ALL
)) // using wtx's cached debit
1896 // Don't trust unconfirmed transactions from us unless they are in the mempool.
1900 // Trusted if all inputs are from us and are in the mempool:
1901 for (const CTxIn
& txin
: tx
->vin
)
1903 // Transactions not sent by us: not trusted
1904 const CWalletTx
* parent
= pwallet
->GetWalletTx(txin
.prevout
.hash
);
1907 const CTxOut
& parentOut
= parent
->tx
->vout
[txin
.prevout
.n
];
1908 if (pwallet
->IsMine(parentOut
) != ISMINE_SPENDABLE
)
1914 bool CWalletTx::IsEquivalentTo(const CWalletTx
& _tx
) const
1916 CMutableTransaction tx1
= *this->tx
;
1917 CMutableTransaction tx2
= *_tx
.tx
;
1918 for (auto& txin
: tx1
.vin
) txin
.scriptSig
= CScript();
1919 for (auto& txin
: tx2
.vin
) txin
.scriptSig
= CScript();
1920 return CTransaction(tx1
) == CTransaction(tx2
);
1923 std::vector
<uint256
> CWallet::ResendWalletTransactionsBefore(int64_t nTime
, CConnman
* connman
)
1925 std::vector
<uint256
> result
;
1928 // Sort them in chronological order
1929 std::multimap
<unsigned int, CWalletTx
*> mapSorted
;
1930 for (std::pair
<const uint256
, CWalletTx
>& item
: mapWallet
)
1932 CWalletTx
& wtx
= item
.second
;
1933 // Don't rebroadcast if newer than nTime:
1934 if (wtx
.nTimeReceived
> nTime
)
1936 mapSorted
.insert(std::make_pair(wtx
.nTimeReceived
, &wtx
));
1938 for (std::pair
<const unsigned int, CWalletTx
*>& item
: mapSorted
)
1940 CWalletTx
& wtx
= *item
.second
;
1941 if (wtx
.RelayWalletTransaction(connman
))
1942 result
.push_back(wtx
.GetHash());
1947 void CWallet::ResendWalletTransactions(int64_t nBestBlockTime
, CConnman
* connman
)
1949 // Do this infrequently and randomly to avoid giving away
1950 // that these are our transactions.
1951 if (GetTime() < nNextResend
|| !fBroadcastTransactions
)
1953 bool fFirst
= (nNextResend
== 0);
1954 nNextResend
= GetTime() + GetRand(30 * 60);
1958 // Only do it if there's been a new block since last time
1959 if (nBestBlockTime
< nLastResend
)
1961 nLastResend
= GetTime();
1963 // Rebroadcast unconfirmed txes older than 5 minutes before the last
1965 std::vector
<uint256
> relayed
= ResendWalletTransactionsBefore(nBestBlockTime
-5*60, connman
);
1966 if (!relayed
.empty())
1967 LogPrintf("%s: rebroadcast %u unconfirmed transactions\n", __func__
, relayed
.size());
1970 /** @} */ // end of mapWallet
1975 /** @defgroup Actions
1981 CAmount
CWallet::GetBalance() const
1985 LOCK2(cs_main
, cs_wallet
);
1986 for (std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); ++it
)
1988 const CWalletTx
* pcoin
= &(*it
).second
;
1989 if (pcoin
->IsTrusted())
1990 nTotal
+= pcoin
->GetAvailableCredit();
1997 CAmount
CWallet::GetUnconfirmedBalance() const
2001 LOCK2(cs_main
, cs_wallet
);
2002 for (std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); ++it
)
2004 const CWalletTx
* pcoin
= &(*it
).second
;
2005 if (!pcoin
->IsTrusted() && pcoin
->GetDepthInMainChain() == 0 && pcoin
->InMempool())
2006 nTotal
+= pcoin
->GetAvailableCredit();
2012 CAmount
CWallet::GetImmatureBalance() const
2016 LOCK2(cs_main
, cs_wallet
);
2017 for (std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); ++it
)
2019 const CWalletTx
* pcoin
= &(*it
).second
;
2020 nTotal
+= pcoin
->GetImmatureCredit();
2026 CAmount
CWallet::GetWatchOnlyBalance() const
2030 LOCK2(cs_main
, cs_wallet
);
2031 for (std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); ++it
)
2033 const CWalletTx
* pcoin
= &(*it
).second
;
2034 if (pcoin
->IsTrusted())
2035 nTotal
+= pcoin
->GetAvailableWatchOnlyCredit();
2042 CAmount
CWallet::GetUnconfirmedWatchOnlyBalance() const
2046 LOCK2(cs_main
, cs_wallet
);
2047 for (std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); ++it
)
2049 const CWalletTx
* pcoin
= &(*it
).second
;
2050 if (!pcoin
->IsTrusted() && pcoin
->GetDepthInMainChain() == 0 && pcoin
->InMempool())
2051 nTotal
+= pcoin
->GetAvailableWatchOnlyCredit();
2057 CAmount
CWallet::GetImmatureWatchOnlyBalance() const
2061 LOCK2(cs_main
, cs_wallet
);
2062 for (std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); ++it
)
2064 const CWalletTx
* pcoin
= &(*it
).second
;
2065 nTotal
+= pcoin
->GetImmatureWatchOnlyCredit();
2071 // Calculate total balance in a different way from GetBalance. The biggest
2072 // difference is that GetBalance sums up all unspent TxOuts paying to the
2073 // wallet, while this sums up both spent and unspent TxOuts paying to the
2074 // wallet, and then subtracts the values of TxIns spending from the wallet. This
2075 // also has fewer restrictions on which unconfirmed transactions are considered
2077 CAmount
CWallet::GetLegacyBalance(const isminefilter
& filter
, int minDepth
, const std::string
* account
) const
2079 LOCK2(cs_main
, cs_wallet
);
2081 CAmount balance
= 0;
2082 for (const auto& entry
: mapWallet
) {
2083 const CWalletTx
& wtx
= entry
.second
;
2084 const int depth
= wtx
.GetDepthInMainChain();
2085 if (depth
< 0 || !CheckFinalTx(*wtx
.tx
) || wtx
.GetBlocksToMaturity() > 0) {
2089 // Loop through tx outputs and add incoming payments. For outgoing txs,
2090 // treat change outputs specially, as part of the amount debited.
2091 CAmount debit
= wtx
.GetDebit(filter
);
2092 const bool outgoing
= debit
> 0;
2093 for (const CTxOut
& out
: wtx
.tx
->vout
) {
2094 if (outgoing
&& IsChange(out
)) {
2095 debit
-= out
.nValue
;
2096 } else if (IsMine(out
) & filter
&& depth
>= minDepth
&& (!account
|| *account
== GetAccountName(out
.scriptPubKey
))) {
2097 balance
+= out
.nValue
;
2101 // For outgoing txs, subtract amount debited.
2102 if (outgoing
&& (!account
|| *account
== wtx
.strFromAccount
)) {
2108 balance
+= CWalletDB(*dbw
).GetAccountCreditDebit(*account
);
2114 CAmount
CWallet::GetAvailableBalance(const CCoinControl
* coinControl
) const
2116 LOCK2(cs_main
, cs_wallet
);
2118 CAmount balance
= 0;
2119 std::vector
<COutput
> vCoins
;
2120 AvailableCoins(vCoins
, true, coinControl
);
2121 for (const COutput
& out
: vCoins
) {
2122 if (out
.fSpendable
) {
2123 balance
+= out
.tx
->tx
->vout
[out
.i
].nValue
;
2129 void CWallet::AvailableCoins(std::vector
<COutput
> &vCoins
, bool fOnlySafe
, const CCoinControl
*coinControl
, const CAmount
&nMinimumAmount
, const CAmount
&nMaximumAmount
, const CAmount
&nMinimumSumAmount
, const uint64_t &nMaximumCount
, const int &nMinDepth
, const int &nMaxDepth
) const
2134 LOCK2(cs_main
, cs_wallet
);
2138 for (std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); ++it
)
2140 const uint256
& wtxid
= it
->first
;
2141 const CWalletTx
* pcoin
= &(*it
).second
;
2143 if (!CheckFinalTx(*pcoin
))
2146 if (pcoin
->IsCoinBase() && pcoin
->GetBlocksToMaturity() > 0)
2149 int nDepth
= pcoin
->GetDepthInMainChain();
2153 // We should not consider coins which aren't at least in our mempool
2154 // It's possible for these to be conflicted via ancestors which we may never be able to detect
2155 if (nDepth
== 0 && !pcoin
->InMempool())
2158 bool safeTx
= pcoin
->IsTrusted();
2160 // We should not consider coins from transactions that are replacing
2161 // other transactions.
2163 // Example: There is a transaction A which is replaced by bumpfee
2164 // transaction B. In this case, we want to prevent creation of
2165 // a transaction B' which spends an output of B.
2167 // Reason: If transaction A were initially confirmed, transactions B
2168 // and B' would no longer be valid, so the user would have to create
2169 // a new transaction C to replace B'. However, in the case of a
2170 // one-block reorg, transactions B' and C might BOTH be accepted,
2171 // when the user only wanted one of them. Specifically, there could
2172 // be a 1-block reorg away from the chain where transactions A and C
2173 // were accepted to another chain where B, B', and C were all
2175 if (nDepth
== 0 && pcoin
->mapValue
.count("replaces_txid")) {
2179 // Similarly, we should not consider coins from transactions that
2180 // have been replaced. In the example above, we would want to prevent
2181 // creation of a transaction A' spending an output of A, because if
2182 // transaction B were initially confirmed, conflicting with A and
2183 // A', we wouldn't want to the user to create a transaction D
2184 // intending to replace A', but potentially resulting in a scenario
2185 // where A, A', and D could all be accepted (instead of just B and
2186 // D, or just A and A' like the user would want).
2187 if (nDepth
== 0 && pcoin
->mapValue
.count("replaced_by_txid")) {
2191 if (fOnlySafe
&& !safeTx
) {
2195 if (nDepth
< nMinDepth
|| nDepth
> nMaxDepth
)
2198 for (unsigned int i
= 0; i
< pcoin
->tx
->vout
.size(); i
++) {
2199 if (pcoin
->tx
->vout
[i
].nValue
< nMinimumAmount
|| pcoin
->tx
->vout
[i
].nValue
> nMaximumAmount
)
2202 if (coinControl
&& coinControl
->HasSelected() && !coinControl
->fAllowOtherInputs
&& !coinControl
->IsSelected(COutPoint((*it
).first
, i
)))
2205 if (IsLockedCoin((*it
).first
, i
))
2208 if (IsSpent(wtxid
, i
))
2211 isminetype mine
= IsMine(pcoin
->tx
->vout
[i
]);
2213 if (mine
== ISMINE_NO
) {
2217 bool fSpendableIn
= ((mine
& ISMINE_SPENDABLE
) != ISMINE_NO
) || (coinControl
&& coinControl
->fAllowWatchOnly
&& (mine
& ISMINE_WATCH_SOLVABLE
) != ISMINE_NO
);
2218 bool fSolvableIn
= (mine
& (ISMINE_SPENDABLE
| ISMINE_WATCH_SOLVABLE
)) != ISMINE_NO
;
2220 vCoins
.push_back(COutput(pcoin
, i
, nDepth
, fSpendableIn
, fSolvableIn
, safeTx
));
2222 // Checks the sum amount of all UTXO's.
2223 if (nMinimumSumAmount
!= MAX_MONEY
) {
2224 nTotal
+= pcoin
->tx
->vout
[i
].nValue
;
2226 if (nTotal
>= nMinimumSumAmount
) {
2231 // Checks the maximum number of UTXO's.
2232 if (nMaximumCount
> 0 && vCoins
.size() >= nMaximumCount
) {
2240 std::map
<CTxDestination
, std::vector
<COutput
>> CWallet::ListCoins() const
2242 // TODO: Add AssertLockHeld(cs_wallet) here.
2244 // Because the return value from this function contains pointers to
2245 // CWalletTx objects, callers to this function really should acquire the
2246 // cs_wallet lock before calling it. However, the current caller doesn't
2247 // acquire this lock yet. There was an attempt to add the missing lock in
2248 // https://github.com/bitcoin/bitcoin/pull/10340, but that change has been
2249 // postponed until after https://github.com/bitcoin/bitcoin/pull/10244 to
2250 // avoid adding some extra complexity to the Qt code.
2252 std::map
<CTxDestination
, std::vector
<COutput
>> result
;
2254 std::vector
<COutput
> availableCoins
;
2255 AvailableCoins(availableCoins
);
2257 LOCK2(cs_main
, cs_wallet
);
2258 for (auto& coin
: availableCoins
) {
2259 CTxDestination address
;
2260 if (coin
.fSpendable
&&
2261 ExtractDestination(FindNonChangeParentOutput(*coin
.tx
->tx
, coin
.i
).scriptPubKey
, address
)) {
2262 result
[address
].emplace_back(std::move(coin
));
2266 std::vector
<COutPoint
> lockedCoins
;
2267 ListLockedCoins(lockedCoins
);
2268 for (const auto& output
: lockedCoins
) {
2269 auto it
= mapWallet
.find(output
.hash
);
2270 if (it
!= mapWallet
.end()) {
2271 int depth
= it
->second
.GetDepthInMainChain();
2272 if (depth
>= 0 && output
.n
< it
->second
.tx
->vout
.size() &&
2273 IsMine(it
->second
.tx
->vout
[output
.n
]) == ISMINE_SPENDABLE
) {
2274 CTxDestination address
;
2275 if (ExtractDestination(FindNonChangeParentOutput(*it
->second
.tx
, output
.n
).scriptPubKey
, address
)) {
2276 result
[address
].emplace_back(
2277 &it
->second
, output
.n
, depth
, true /* spendable */, true /* solvable */, false /* safe */);
2286 const CTxOut
& CWallet::FindNonChangeParentOutput(const CTransaction
& tx
, int output
) const
2288 const CTransaction
* ptx
= &tx
;
2290 while (IsChange(ptx
->vout
[n
]) && ptx
->vin
.size() > 0) {
2291 const COutPoint
& prevout
= ptx
->vin
[0].prevout
;
2292 auto it
= mapWallet
.find(prevout
.hash
);
2293 if (it
== mapWallet
.end() || it
->second
.tx
->vout
.size() <= prevout
.n
||
2294 !IsMine(it
->second
.tx
->vout
[prevout
.n
])) {
2297 ptx
= it
->second
.tx
.get();
2300 return ptx
->vout
[n
];
2303 static void ApproximateBestSubset(const std::vector
<CInputCoin
>& vValue
, const CAmount
& nTotalLower
, const CAmount
& nTargetValue
,
2304 std::vector
<char>& vfBest
, CAmount
& nBest
, int iterations
= 1000)
2306 std::vector
<char> vfIncluded
;
2308 vfBest
.assign(vValue
.size(), true);
2309 nBest
= nTotalLower
;
2311 FastRandomContext insecure_rand
;
2313 for (int nRep
= 0; nRep
< iterations
&& nBest
!= nTargetValue
; nRep
++)
2315 vfIncluded
.assign(vValue
.size(), false);
2317 bool fReachedTarget
= false;
2318 for (int nPass
= 0; nPass
< 2 && !fReachedTarget
; nPass
++)
2320 for (unsigned int i
= 0; i
< vValue
.size(); i
++)
2322 //The solver here uses a randomized algorithm,
2323 //the randomness serves no real security purpose but is just
2324 //needed to prevent degenerate behavior and it is important
2325 //that the rng is fast. We do not use a constant random sequence,
2326 //because there may be some privacy improvement by making
2327 //the selection random.
2328 if (nPass
== 0 ? insecure_rand
.randbool() : !vfIncluded
[i
])
2330 nTotal
+= vValue
[i
].txout
.nValue
;
2331 vfIncluded
[i
] = true;
2332 if (nTotal
>= nTargetValue
)
2334 fReachedTarget
= true;
2338 vfBest
= vfIncluded
;
2340 nTotal
-= vValue
[i
].txout
.nValue
;
2341 vfIncluded
[i
] = false;
2349 bool CWallet::SelectCoinsMinConf(const CAmount
& nTargetValue
, const int nConfMine
, const int nConfTheirs
, const uint64_t nMaxAncestors
, std::vector
<COutput
> vCoins
,
2350 std::set
<CInputCoin
>& setCoinsRet
, CAmount
& nValueRet
) const
2352 setCoinsRet
.clear();
2355 // List of values less than target
2356 boost::optional
<CInputCoin
> coinLowestLarger
;
2357 std::vector
<CInputCoin
> vValue
;
2358 CAmount nTotalLower
= 0;
2360 random_shuffle(vCoins
.begin(), vCoins
.end(), GetRandInt
);
2362 for (const COutput
&output
: vCoins
)
2364 if (!output
.fSpendable
)
2367 const CWalletTx
*pcoin
= output
.tx
;
2369 if (output
.nDepth
< (pcoin
->IsFromMe(ISMINE_ALL
) ? nConfMine
: nConfTheirs
))
2372 if (!mempool
.TransactionWithinChainLimit(pcoin
->GetHash(), nMaxAncestors
))
2377 CInputCoin coin
= CInputCoin(pcoin
, i
);
2379 if (coin
.txout
.nValue
== nTargetValue
)
2381 setCoinsRet
.insert(coin
);
2382 nValueRet
+= coin
.txout
.nValue
;
2385 else if (coin
.txout
.nValue
< nTargetValue
+ MIN_CHANGE
)
2387 vValue
.push_back(coin
);
2388 nTotalLower
+= coin
.txout
.nValue
;
2390 else if (!coinLowestLarger
|| coin
.txout
.nValue
< coinLowestLarger
->txout
.nValue
)
2392 coinLowestLarger
= coin
;
2396 if (nTotalLower
== nTargetValue
)
2398 for (const auto& input
: vValue
)
2400 setCoinsRet
.insert(input
);
2401 nValueRet
+= input
.txout
.nValue
;
2406 if (nTotalLower
< nTargetValue
)
2408 if (!coinLowestLarger
)
2410 setCoinsRet
.insert(coinLowestLarger
.get());
2411 nValueRet
+= coinLowestLarger
->txout
.nValue
;
2415 // Solve subset sum by stochastic approximation
2416 std::sort(vValue
.begin(), vValue
.end(), CompareValueOnly());
2417 std::reverse(vValue
.begin(), vValue
.end());
2418 std::vector
<char> vfBest
;
2421 ApproximateBestSubset(vValue
, nTotalLower
, nTargetValue
, vfBest
, nBest
);
2422 if (nBest
!= nTargetValue
&& nTotalLower
>= nTargetValue
+ MIN_CHANGE
)
2423 ApproximateBestSubset(vValue
, nTotalLower
, nTargetValue
+ MIN_CHANGE
, vfBest
, nBest
);
2425 // If we have a bigger coin and (either the stochastic approximation didn't find a good solution,
2426 // or the next bigger coin is closer), return the bigger coin
2427 if (coinLowestLarger
&&
2428 ((nBest
!= nTargetValue
&& nBest
< nTargetValue
+ MIN_CHANGE
) || coinLowestLarger
->txout
.nValue
<= nBest
))
2430 setCoinsRet
.insert(coinLowestLarger
.get());
2431 nValueRet
+= coinLowestLarger
->txout
.nValue
;
2434 for (unsigned int i
= 0; i
< vValue
.size(); i
++)
2437 setCoinsRet
.insert(vValue
[i
]);
2438 nValueRet
+= vValue
[i
].txout
.nValue
;
2441 if (LogAcceptCategory(BCLog::SELECTCOINS
)) {
2442 LogPrint(BCLog::SELECTCOINS
, "SelectCoins() best subset: ");
2443 for (unsigned int i
= 0; i
< vValue
.size(); i
++) {
2445 LogPrint(BCLog::SELECTCOINS
, "%s ", FormatMoney(vValue
[i
].txout
.nValue
));
2448 LogPrint(BCLog::SELECTCOINS
, "total %s\n", FormatMoney(nBest
));
2455 bool CWallet::SelectCoins(const std::vector
<COutput
>& vAvailableCoins
, const CAmount
& nTargetValue
, std::set
<CInputCoin
>& setCoinsRet
, CAmount
& nValueRet
, const CCoinControl
* coinControl
) const
2457 std::vector
<COutput
> vCoins(vAvailableCoins
);
2459 // coin control -> return all selected outputs (we want all selected to go into the transaction for sure)
2460 if (coinControl
&& coinControl
->HasSelected() && !coinControl
->fAllowOtherInputs
)
2462 for (const COutput
& out
: vCoins
)
2464 if (!out
.fSpendable
)
2466 nValueRet
+= out
.tx
->tx
->vout
[out
.i
].nValue
;
2467 setCoinsRet
.insert(CInputCoin(out
.tx
, out
.i
));
2469 return (nValueRet
>= nTargetValue
);
2472 // calculate value from preset inputs and store them
2473 std::set
<CInputCoin
> setPresetCoins
;
2474 CAmount nValueFromPresetInputs
= 0;
2476 std::vector
<COutPoint
> vPresetInputs
;
2478 coinControl
->ListSelected(vPresetInputs
);
2479 for (const COutPoint
& outpoint
: vPresetInputs
)
2481 std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.find(outpoint
.hash
);
2482 if (it
!= mapWallet
.end())
2484 const CWalletTx
* pcoin
= &it
->second
;
2485 // Clearly invalid input, fail
2486 if (pcoin
->tx
->vout
.size() <= outpoint
.n
)
2488 nValueFromPresetInputs
+= pcoin
->tx
->vout
[outpoint
.n
].nValue
;
2489 setPresetCoins
.insert(CInputCoin(pcoin
, outpoint
.n
));
2491 return false; // TODO: Allow non-wallet inputs
2494 // remove preset inputs from vCoins
2495 for (std::vector
<COutput
>::iterator it
= vCoins
.begin(); it
!= vCoins
.end() && coinControl
&& coinControl
->HasSelected();)
2497 if (setPresetCoins
.count(CInputCoin(it
->tx
, it
->i
)))
2498 it
= vCoins
.erase(it
);
2503 size_t nMaxChainLength
= std::min(GetArg("-limitancestorcount", DEFAULT_ANCESTOR_LIMIT
), GetArg("-limitdescendantcount", DEFAULT_DESCENDANT_LIMIT
));
2504 bool fRejectLongChains
= GetBoolArg("-walletrejectlongchains", DEFAULT_WALLET_REJECT_LONG_CHAINS
);
2506 bool res
= nTargetValue
<= nValueFromPresetInputs
||
2507 SelectCoinsMinConf(nTargetValue
- nValueFromPresetInputs
, 1, 6, 0, vCoins
, setCoinsRet
, nValueRet
) ||
2508 SelectCoinsMinConf(nTargetValue
- nValueFromPresetInputs
, 1, 1, 0, vCoins
, setCoinsRet
, nValueRet
) ||
2509 (bSpendZeroConfChange
&& SelectCoinsMinConf(nTargetValue
- nValueFromPresetInputs
, 0, 1, 2, vCoins
, setCoinsRet
, nValueRet
)) ||
2510 (bSpendZeroConfChange
&& SelectCoinsMinConf(nTargetValue
- nValueFromPresetInputs
, 0, 1, std::min((size_t)4, nMaxChainLength
/3), vCoins
, setCoinsRet
, nValueRet
)) ||
2511 (bSpendZeroConfChange
&& SelectCoinsMinConf(nTargetValue
- nValueFromPresetInputs
, 0, 1, nMaxChainLength
/2, vCoins
, setCoinsRet
, nValueRet
)) ||
2512 (bSpendZeroConfChange
&& SelectCoinsMinConf(nTargetValue
- nValueFromPresetInputs
, 0, 1, nMaxChainLength
, vCoins
, setCoinsRet
, nValueRet
)) ||
2513 (bSpendZeroConfChange
&& !fRejectLongChains
&& SelectCoinsMinConf(nTargetValue
- nValueFromPresetInputs
, 0, 1, std::numeric_limits
<uint64_t>::max(), vCoins
, setCoinsRet
, nValueRet
));
2515 // because SelectCoinsMinConf clears the setCoinsRet, we now add the possible inputs to the coinset
2516 setCoinsRet
.insert(setPresetCoins
.begin(), setPresetCoins
.end());
2518 // add preset inputs to the total value selected
2519 nValueRet
+= nValueFromPresetInputs
;
2524 bool CWallet::SignTransaction(CMutableTransaction
&tx
)
2526 AssertLockHeld(cs_wallet
); // mapWallet
2529 CTransaction
txNewConst(tx
);
2531 for (const auto& input
: tx
.vin
) {
2532 std::map
<uint256
, CWalletTx
>::const_iterator mi
= mapWallet
.find(input
.prevout
.hash
);
2533 if(mi
== mapWallet
.end() || input
.prevout
.n
>= mi
->second
.tx
->vout
.size()) {
2536 const CScript
& scriptPubKey
= mi
->second
.tx
->vout
[input
.prevout
.n
].scriptPubKey
;
2537 const CAmount
& amount
= mi
->second
.tx
->vout
[input
.prevout
.n
].nValue
;
2538 SignatureData sigdata
;
2539 if (!ProduceSignature(TransactionSignatureCreator(this, &txNewConst
, nIn
, amount
, SIGHASH_ALL
), scriptPubKey
, sigdata
)) {
2542 UpdateTransaction(tx
, nIn
, sigdata
);
2548 bool CWallet::FundTransaction(CMutableTransaction
& tx
, CAmount
& nFeeRet
, int& nChangePosInOut
, std::string
& strFailReason
, bool lockUnspents
, const std::set
<int>& setSubtractFeeFromOutputs
, CCoinControl coinControl
)
2550 std::vector
<CRecipient
> vecSend
;
2552 // Turn the txout set into a CRecipient vector
2553 for (size_t idx
= 0; idx
< tx
.vout
.size(); idx
++)
2555 const CTxOut
& txOut
= tx
.vout
[idx
];
2556 CRecipient recipient
= {txOut
.scriptPubKey
, txOut
.nValue
, setSubtractFeeFromOutputs
.count(idx
) == 1};
2557 vecSend
.push_back(recipient
);
2560 coinControl
.fAllowOtherInputs
= true;
2562 for (const CTxIn
& txin
: tx
.vin
)
2563 coinControl
.Select(txin
.prevout
);
2565 CReserveKey
reservekey(this);
2567 if (!CreateTransaction(vecSend
, wtx
, reservekey
, nFeeRet
, nChangePosInOut
, strFailReason
, coinControl
, false)) {
2571 if (nChangePosInOut
!= -1) {
2572 tx
.vout
.insert(tx
.vout
.begin() + nChangePosInOut
, wtx
.tx
->vout
[nChangePosInOut
]);
2573 // we dont have the normal Create/Commit cycle, and dont want to risk reusing change,
2574 // so just remove the key from the keypool here.
2575 reservekey
.KeepKey();
2578 // Copy output sizes from new transaction; they may have had the fee subtracted from them
2579 for (unsigned int idx
= 0; idx
< tx
.vout
.size(); idx
++)
2580 tx
.vout
[idx
].nValue
= wtx
.tx
->vout
[idx
].nValue
;
2582 // Add new txins (keeping original txin scriptSig/order)
2583 for (const CTxIn
& txin
: wtx
.tx
->vin
)
2585 if (!coinControl
.IsSelected(txin
.prevout
))
2587 tx
.vin
.push_back(txin
);
2591 LOCK2(cs_main
, cs_wallet
);
2592 LockCoin(txin
.prevout
);
2601 static CFeeRate
GetDiscardRate(const CBlockPolicyEstimator
& estimator
)
2603 unsigned int highest_target
= estimator
.HighestTargetTracked(FeeEstimateHorizon::LONG_HALFLIFE
);
2604 CFeeRate discard_rate
= estimator
.estimateSmartFee(highest_target
, nullptr /* FeeCalculation */, false /* conservative */);
2605 // Don't let discard_rate be greater than longest possible fee estimate if we get a valid fee estimate
2606 discard_rate
= (discard_rate
== CFeeRate(0)) ? CWallet::m_discard_rate
: std::min(discard_rate
, CWallet::m_discard_rate
);
2607 // Discard rate must be at least dustRelayFee
2608 discard_rate
= std::max(discard_rate
, ::dustRelayFee
);
2609 return discard_rate
;
2612 bool CWallet::CreateTransaction(const std::vector
<CRecipient
>& vecSend
, CWalletTx
& wtxNew
, CReserveKey
& reservekey
, CAmount
& nFeeRet
,
2613 int& nChangePosInOut
, std::string
& strFailReason
, const CCoinControl
& coin_control
, bool sign
)
2616 int nChangePosRequest
= nChangePosInOut
;
2617 unsigned int nSubtractFeeFromAmount
= 0;
2618 for (const auto& recipient
: vecSend
)
2620 if (nValue
< 0 || recipient
.nAmount
< 0)
2622 strFailReason
= _("Transaction amounts must not be negative");
2625 nValue
+= recipient
.nAmount
;
2627 if (recipient
.fSubtractFeeFromAmount
)
2628 nSubtractFeeFromAmount
++;
2630 if (vecSend
.empty())
2632 strFailReason
= _("Transaction must have at least one recipient");
2636 wtxNew
.fTimeReceivedIsTxTime
= true;
2637 wtxNew
.BindWallet(this);
2638 CMutableTransaction txNew
;
2640 // Discourage fee sniping.
2642 // For a large miner the value of the transactions in the best block and
2643 // the mempool can exceed the cost of deliberately attempting to mine two
2644 // blocks to orphan the current best block. By setting nLockTime such that
2645 // only the next block can include the transaction, we discourage this
2646 // practice as the height restricted and limited blocksize gives miners
2647 // considering fee sniping fewer options for pulling off this attack.
2649 // A simple way to think about this is from the wallet's point of view we
2650 // always want the blockchain to move forward. By setting nLockTime this
2651 // way we're basically making the statement that we only want this
2652 // transaction to appear in the next block; we don't want to potentially
2653 // encourage reorgs by allowing transactions to appear at lower heights
2654 // than the next block in forks of the best chain.
2656 // Of course, the subsidy is high enough, and transaction volume low
2657 // enough, that fee sniping isn't a problem yet, but by implementing a fix
2658 // now we ensure code won't be written that makes assumptions about
2659 // nLockTime that preclude a fix later.
2660 txNew
.nLockTime
= chainActive
.Height();
2662 // Secondly occasionally randomly pick a nLockTime even further back, so
2663 // that transactions that are delayed after signing for whatever reason,
2664 // e.g. high-latency mix networks and some CoinJoin implementations, have
2666 if (GetRandInt(10) == 0)
2667 txNew
.nLockTime
= std::max(0, (int)txNew
.nLockTime
- GetRandInt(100));
2669 assert(txNew
.nLockTime
<= (unsigned int)chainActive
.Height());
2670 assert(txNew
.nLockTime
< LOCKTIME_THRESHOLD
);
2671 FeeCalculation feeCalc
;
2672 unsigned int nBytes
;
2674 std::set
<CInputCoin
> setCoins
;
2675 LOCK2(cs_main
, cs_wallet
);
2677 std::vector
<COutput
> vAvailableCoins
;
2678 AvailableCoins(vAvailableCoins
, true, &coin_control
);
2680 // Create change script that will be used if we need change
2681 // TODO: pass in scriptChange instead of reservekey so
2682 // change transaction isn't always pay-to-bitcoin-address
2683 CScript scriptChange
;
2685 // coin control: send change to custom address
2686 if (!boost::get
<CNoDestination
>(&coin_control
.destChange
)) {
2687 scriptChange
= GetScriptForDestination(coin_control
.destChange
);
2688 } else { // no coin control: send change to newly generated address
2689 // Note: We use a new key here to keep it from being obvious which side is the change.
2690 // The drawback is that by not reusing a previous key, the change may be lost if a
2691 // backup is restored, if the backup doesn't have the new private key for the change.
2692 // If we reused the old key, it would be possible to add code to look for and
2693 // rediscover unknown transactions that were written with keys of ours to recover
2694 // post-backup change.
2696 // Reserve a new key pair from key pool
2699 ret
= reservekey
.GetReservedKey(vchPubKey
, true);
2702 strFailReason
= _("Keypool ran out, please call keypoolrefill first");
2706 scriptChange
= GetScriptForDestination(vchPubKey
.GetID());
2708 CTxOut
change_prototype_txout(0, scriptChange
);
2709 size_t change_prototype_size
= GetSerializeSize(change_prototype_txout
, SER_DISK
, 0);
2711 CFeeRate discard_rate
= GetDiscardRate(::feeEstimator
);
2713 bool pick_new_inputs
= true;
2714 CAmount nValueIn
= 0;
2715 // Start with no fee and loop until there is enough fee
2718 nChangePosInOut
= nChangePosRequest
;
2721 wtxNew
.fFromMe
= true;
2724 CAmount nValueToSelect
= nValue
;
2725 if (nSubtractFeeFromAmount
== 0)
2726 nValueToSelect
+= nFeeRet
;
2727 // vouts to the payees
2728 for (const auto& recipient
: vecSend
)
2730 CTxOut
txout(recipient
.nAmount
, recipient
.scriptPubKey
);
2732 if (recipient
.fSubtractFeeFromAmount
)
2734 txout
.nValue
-= nFeeRet
/ nSubtractFeeFromAmount
; // Subtract fee equally from each selected recipient
2736 if (fFirst
) // first receiver pays the remainder not divisible by output count
2739 txout
.nValue
-= nFeeRet
% nSubtractFeeFromAmount
;
2743 if (IsDust(txout
, ::dustRelayFee
))
2745 if (recipient
.fSubtractFeeFromAmount
&& nFeeRet
> 0)
2747 if (txout
.nValue
< 0)
2748 strFailReason
= _("The transaction amount is too small to pay the fee");
2750 strFailReason
= _("The transaction amount is too small to send after the fee has been deducted");
2753 strFailReason
= _("Transaction amount too small");
2756 txNew
.vout
.push_back(txout
);
2759 // Choose coins to use
2760 if (pick_new_inputs
) {
2763 if (!SelectCoins(vAvailableCoins
, nValueToSelect
, setCoins
, nValueIn
, &coin_control
))
2765 strFailReason
= _("Insufficient funds");
2770 const CAmount nChange
= nValueIn
- nValueToSelect
;
2774 // Fill a vout to ourself
2775 CTxOut
newTxOut(nChange
, scriptChange
);
2777 // Never create dust outputs; if we would, just
2778 // add the dust to the fee.
2779 if (IsDust(newTxOut
, discard_rate
))
2781 nChangePosInOut
= -1;
2786 if (nChangePosInOut
== -1)
2788 // Insert change txn at random position:
2789 nChangePosInOut
= GetRandInt(txNew
.vout
.size()+1);
2791 else if ((unsigned int)nChangePosInOut
> txNew
.vout
.size())
2793 strFailReason
= _("Change index out of range");
2797 std::vector
<CTxOut
>::iterator position
= txNew
.vout
.begin()+nChangePosInOut
;
2798 txNew
.vout
.insert(position
, newTxOut
);
2801 nChangePosInOut
= -1;
2806 // Note how the sequence number is set to non-maxint so that
2807 // the nLockTime set above actually works.
2809 // BIP125 defines opt-in RBF as any nSequence < maxint-1, so
2810 // we use the highest possible value in that range (maxint-2)
2811 // to avoid conflicting with other possible uses of nSequence,
2812 // and in the spirit of "smallest possible change from prior
2814 const uint32_t nSequence
= coin_control
.signalRbf
? MAX_BIP125_RBF_SEQUENCE
: (CTxIn::SEQUENCE_FINAL
- 1);
2815 for (const auto& coin
: setCoins
)
2816 txNew
.vin
.push_back(CTxIn(coin
.outpoint
,CScript(),
2819 // Fill in dummy signatures for fee calculation.
2820 if (!DummySignTx(txNew
, setCoins
)) {
2821 strFailReason
= _("Signing transaction failed");
2825 nBytes
= GetVirtualTransactionSize(txNew
);
2827 // Remove scriptSigs to eliminate the fee calculation dummy signatures
2828 for (auto& vin
: txNew
.vin
) {
2829 vin
.scriptSig
= CScript();
2830 vin
.scriptWitness
.SetNull();
2833 CAmount nFeeNeeded
= GetMinimumFee(nBytes
, coin_control
, ::mempool
, ::feeEstimator
, &feeCalc
);
2835 // If we made it here and we aren't even able to meet the relay fee on the next pass, give up
2836 // because we must be at the maximum allowed fee.
2837 if (nFeeNeeded
< ::minRelayTxFee
.GetFee(nBytes
))
2839 strFailReason
= _("Transaction too large for fee policy");
2843 if (nFeeRet
>= nFeeNeeded
) {
2844 // Reduce fee to only the needed amount if possible. This
2845 // prevents potential overpayment in fees if the coins
2846 // selected to meet nFeeNeeded result in a transaction that
2847 // requires less fee than the prior iteration.
2849 // TODO: The case where nSubtractFeeFromAmount > 0 remains
2850 // to be addressed because it requires returning the fee to
2851 // the payees and not the change output.
2853 // If we have no change and a big enough excess fee, then
2854 // try to construct transaction again only without picking
2855 // new inputs. We now know we only need the smaller fee
2856 // (because of reduced tx size) and so we should add a
2857 // change output. Only try this once.
2858 CAmount fee_needed_for_change
= GetMinimumFee(change_prototype_size
, coin_control
, ::mempool
, ::feeEstimator
, nullptr);
2859 CAmount minimum_value_for_change
= GetDustThreshold(change_prototype_txout
, discard_rate
);
2860 CAmount max_excess_fee
= fee_needed_for_change
+ minimum_value_for_change
;
2861 if (nFeeRet
> nFeeNeeded
+ max_excess_fee
&& nChangePosInOut
== -1 && nSubtractFeeFromAmount
== 0 && pick_new_inputs
) {
2862 pick_new_inputs
= false;
2863 nFeeRet
= nFeeNeeded
+ fee_needed_for_change
;
2867 // If we have change output already, just increase it
2868 if (nFeeRet
> nFeeNeeded
&& nChangePosInOut
!= -1 && nSubtractFeeFromAmount
== 0) {
2869 CAmount extraFeePaid
= nFeeRet
- nFeeNeeded
;
2870 std::vector
<CTxOut
>::iterator change_position
= txNew
.vout
.begin()+nChangePosInOut
;
2871 change_position
->nValue
+= extraFeePaid
;
2872 nFeeRet
-= extraFeePaid
;
2874 break; // Done, enough fee included.
2876 else if (!pick_new_inputs
) {
2877 // This shouldn't happen, we should have had enough excess
2878 // fee to pay for the new output and still meet nFeeNeeded
2879 strFailReason
= _("Transaction fee and change calculation failed");
2883 // Try to reduce change to include necessary fee
2884 if (nChangePosInOut
!= -1 && nSubtractFeeFromAmount
== 0) {
2885 CAmount additionalFeeNeeded
= nFeeNeeded
- nFeeRet
;
2886 std::vector
<CTxOut
>::iterator change_position
= txNew
.vout
.begin()+nChangePosInOut
;
2887 // Only reduce change if remaining amount is still a large enough output.
2888 if (change_position
->nValue
>= MIN_FINAL_CHANGE
+ additionalFeeNeeded
) {
2889 change_position
->nValue
-= additionalFeeNeeded
;
2890 nFeeRet
+= additionalFeeNeeded
;
2891 break; // Done, able to increase fee from change
2895 // Include more fee and try again.
2896 nFeeRet
= nFeeNeeded
;
2901 if (nChangePosInOut
== -1) reservekey
.ReturnKey(); // Return any reserved key if we don't have change
2905 CTransaction
txNewConst(txNew
);
2907 for (const auto& coin
: setCoins
)
2909 const CScript
& scriptPubKey
= coin
.txout
.scriptPubKey
;
2910 SignatureData sigdata
;
2912 if (!ProduceSignature(TransactionSignatureCreator(this, &txNewConst
, nIn
, coin
.txout
.nValue
, SIGHASH_ALL
), scriptPubKey
, sigdata
))
2914 strFailReason
= _("Signing transaction failed");
2917 UpdateTransaction(txNew
, nIn
, sigdata
);
2924 // Embed the constructed transaction data in wtxNew.
2925 wtxNew
.SetTx(MakeTransactionRef(std::move(txNew
)));
2928 if (GetTransactionWeight(wtxNew
) >= MAX_STANDARD_TX_WEIGHT
)
2930 strFailReason
= _("Transaction too large");
2935 if (GetBoolArg("-walletrejectlongchains", DEFAULT_WALLET_REJECT_LONG_CHAINS
)) {
2936 // Lastly, ensure this tx will pass the mempool's chain limits
2938 CTxMemPoolEntry
entry(wtxNew
.tx
, 0, 0, 0, false, 0, lp
);
2939 CTxMemPool::setEntries setAncestors
;
2940 size_t nLimitAncestors
= GetArg("-limitancestorcount", DEFAULT_ANCESTOR_LIMIT
);
2941 size_t nLimitAncestorSize
= GetArg("-limitancestorsize", DEFAULT_ANCESTOR_SIZE_LIMIT
)*1000;
2942 size_t nLimitDescendants
= GetArg("-limitdescendantcount", DEFAULT_DESCENDANT_LIMIT
);
2943 size_t nLimitDescendantSize
= GetArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT
)*1000;
2944 std::string errString
;
2945 if (!mempool
.CalculateMemPoolAncestors(entry
, setAncestors
, nLimitAncestors
, nLimitAncestorSize
, nLimitDescendants
, nLimitDescendantSize
, errString
)) {
2946 strFailReason
= _("Transaction has too long of a mempool chain");
2951 LogPrintf("Fee Calculation: Fee:%d Bytes:%u Tgt:%d (requested %d) Reason:\"%s\" Decay %.5f: Estimation: (%g - %g) %.2f%% %.1f/(%.1f %d mem %.1f out) Fail: (%g - %g) %.2f%% %.1f/(%.1f %d mem %.1f out)\n",
2952 nFeeRet
, nBytes
, feeCalc
.returnedTarget
, feeCalc
.desiredTarget
, StringForFeeReason(feeCalc
.reason
), feeCalc
.est
.decay
,
2953 feeCalc
.est
.pass
.start
, feeCalc
.est
.pass
.end
,
2954 100 * feeCalc
.est
.pass
.withinTarget
/ (feeCalc
.est
.pass
.totalConfirmed
+ feeCalc
.est
.pass
.inMempool
+ feeCalc
.est
.pass
.leftMempool
),
2955 feeCalc
.est
.pass
.withinTarget
, feeCalc
.est
.pass
.totalConfirmed
, feeCalc
.est
.pass
.inMempool
, feeCalc
.est
.pass
.leftMempool
,
2956 feeCalc
.est
.fail
.start
, feeCalc
.est
.fail
.end
,
2957 100 * feeCalc
.est
.fail
.withinTarget
/ (feeCalc
.est
.fail
.totalConfirmed
+ feeCalc
.est
.fail
.inMempool
+ feeCalc
.est
.fail
.leftMempool
),
2958 feeCalc
.est
.fail
.withinTarget
, feeCalc
.est
.fail
.totalConfirmed
, feeCalc
.est
.fail
.inMempool
, feeCalc
.est
.fail
.leftMempool
);
2963 * Call after CreateTransaction unless you want to abort
2965 bool CWallet::CommitTransaction(CWalletTx
& wtxNew
, CReserveKey
& reservekey
, CConnman
* connman
, CValidationState
& state
)
2968 LOCK2(cs_main
, cs_wallet
);
2969 LogPrintf("CommitTransaction:\n%s", wtxNew
.tx
->ToString());
2971 // Take key pair from key pool so it won't be used again
2972 reservekey
.KeepKey();
2974 // Add tx to wallet, because if it has change it's also ours,
2975 // otherwise just for transaction history.
2976 AddToWallet(wtxNew
);
2978 // Notify that old coins are spent
2979 for (const CTxIn
& txin
: wtxNew
.tx
->vin
)
2981 CWalletTx
&coin
= mapWallet
[txin
.prevout
.hash
];
2982 coin
.BindWallet(this);
2983 NotifyTransactionChanged(this, coin
.GetHash(), CT_UPDATED
);
2987 // Track how many getdata requests our transaction gets
2988 mapRequestCount
[wtxNew
.GetHash()] = 0;
2990 if (fBroadcastTransactions
)
2993 if (!wtxNew
.AcceptToMemoryPool(maxTxFee
, state
)) {
2994 LogPrintf("CommitTransaction(): Transaction cannot be broadcast immediately, %s\n", state
.GetRejectReason());
2995 // TODO: if we expect the failure to be long term or permanent, instead delete wtx from the wallet and return failure.
2997 wtxNew
.RelayWalletTransaction(connman
);
3004 void CWallet::ListAccountCreditDebit(const std::string
& strAccount
, std::list
<CAccountingEntry
>& entries
) {
3005 CWalletDB
walletdb(*dbw
);
3006 return walletdb
.ListAccountCreditDebit(strAccount
, entries
);
3009 bool CWallet::AddAccountingEntry(const CAccountingEntry
& acentry
)
3011 CWalletDB
walletdb(*dbw
);
3013 return AddAccountingEntry(acentry
, &walletdb
);
3016 bool CWallet::AddAccountingEntry(const CAccountingEntry
& acentry
, CWalletDB
*pwalletdb
)
3018 if (!pwalletdb
->WriteAccountingEntry(++nAccountingEntryNumber
, acentry
)) {
3022 laccentries
.push_back(acentry
);
3023 CAccountingEntry
& entry
= laccentries
.back();
3024 wtxOrdered
.insert(std::make_pair(entry
.nOrderPos
, TxPair((CWalletTx
*)0, &entry
)));
3029 CAmount
CWallet::GetRequiredFee(unsigned int nTxBytes
)
3031 return std::max(minTxFee
.GetFee(nTxBytes
), ::minRelayTxFee
.GetFee(nTxBytes
));
3034 CAmount
CWallet::GetMinimumFee(unsigned int nTxBytes
, const CCoinControl
& coin_control
, const CTxMemPool
& pool
, const CBlockPolicyEstimator
& estimator
, FeeCalculation
*feeCalc
)
3036 /* User control of how to calculate fee uses the following parameter precedence:
3037 1. coin_control.m_feerate
3038 2. coin_control.m_confirm_target
3039 3. payTxFee (user-set global variable)
3040 4. nTxConfirmTarget (user-set global variable)
3041 The first parameter that is set is used.
3044 if (coin_control
.m_feerate
) { // 1.
3045 fee_needed
= coin_control
.m_feerate
->GetFee(nTxBytes
);
3046 if (feeCalc
) feeCalc
->reason
= FeeReason::PAYTXFEE
;
3047 // Allow to override automatic min/max check over coin control instance
3048 if (coin_control
.fOverrideFeeRate
) return fee_needed
;
3050 else if (!coin_control
.m_confirm_target
&& ::payTxFee
!= CFeeRate(0)) { // 3. TODO: remove magic value of 0 for global payTxFee
3051 fee_needed
= ::payTxFee
.GetFee(nTxBytes
);
3052 if (feeCalc
) feeCalc
->reason
= FeeReason::PAYTXFEE
;
3055 // We will use smart fee estimation
3056 unsigned int target
= coin_control
.m_confirm_target
? *coin_control
.m_confirm_target
: ::nTxConfirmTarget
;
3057 // By default estimates are economical iff we are signaling opt-in-RBF
3058 bool conservative_estimate
= !coin_control
.signalRbf
;
3059 // Allow to override the default fee estimate mode over the CoinControl instance
3060 if (coin_control
.m_fee_mode
== FeeEstimateMode::CONSERVATIVE
) conservative_estimate
= true;
3061 else if (coin_control
.m_fee_mode
== FeeEstimateMode::ECONOMICAL
) conservative_estimate
= false;
3063 fee_needed
= estimator
.estimateSmartFee(target
, feeCalc
, conservative_estimate
).GetFee(nTxBytes
);
3064 if (fee_needed
== 0) {
3065 // if we don't have enough data for estimateSmartFee, then use fallbackFee
3066 fee_needed
= fallbackFee
.GetFee(nTxBytes
);
3067 if (feeCalc
) feeCalc
->reason
= FeeReason::FALLBACK
;
3069 // Obey mempool min fee when using smart fee estimation
3070 CAmount min_mempool_fee
= pool
.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE
) * 1000000).GetFee(nTxBytes
);
3071 if (fee_needed
< min_mempool_fee
) {
3072 fee_needed
= min_mempool_fee
;
3073 if (feeCalc
) feeCalc
->reason
= FeeReason::MEMPOOL_MIN
;
3077 // prevent user from paying a fee below minRelayTxFee or minTxFee
3078 CAmount required_fee
= GetRequiredFee(nTxBytes
);
3079 if (required_fee
> fee_needed
) {
3080 fee_needed
= required_fee
;
3081 if (feeCalc
) feeCalc
->reason
= FeeReason::REQUIRED
;
3083 // But always obey the maximum
3084 if (fee_needed
> maxTxFee
) {
3085 fee_needed
= maxTxFee
;
3086 if (feeCalc
) feeCalc
->reason
= FeeReason::MAXTXFEE
;
3094 DBErrors
CWallet::LoadWallet(bool& fFirstRunRet
)
3096 fFirstRunRet
= false;
3097 DBErrors nLoadWalletRet
= CWalletDB(*dbw
,"cr+").LoadWallet(this);
3098 if (nLoadWalletRet
== DB_NEED_REWRITE
)
3100 if (dbw
->Rewrite("\x04pool"))
3103 setInternalKeyPool
.clear();
3104 setExternalKeyPool
.clear();
3105 m_pool_key_to_index
.clear();
3106 // Note: can't top-up keypool here, because wallet is locked.
3107 // User will be prompted to unlock wallet the next operation
3108 // that requires a new key.
3112 if (nLoadWalletRet
!= DB_LOAD_OK
)
3113 return nLoadWalletRet
;
3114 fFirstRunRet
= !vchDefaultKey
.IsValid();
3116 uiInterface
.LoadWallet(this);
3121 DBErrors
CWallet::ZapSelectTx(std::vector
<uint256
>& vHashIn
, std::vector
<uint256
>& vHashOut
)
3123 AssertLockHeld(cs_wallet
); // mapWallet
3124 vchDefaultKey
= CPubKey();
3125 DBErrors nZapSelectTxRet
= CWalletDB(*dbw
,"cr+").ZapSelectTx(vHashIn
, vHashOut
);
3126 for (uint256 hash
: vHashOut
)
3127 mapWallet
.erase(hash
);
3129 if (nZapSelectTxRet
== DB_NEED_REWRITE
)
3131 if (dbw
->Rewrite("\x04pool"))
3133 setInternalKeyPool
.clear();
3134 setExternalKeyPool
.clear();
3135 m_pool_key_to_index
.clear();
3136 // Note: can't top-up keypool here, because wallet is locked.
3137 // User will be prompted to unlock wallet the next operation
3138 // that requires a new key.
3142 if (nZapSelectTxRet
!= DB_LOAD_OK
)
3143 return nZapSelectTxRet
;
3151 DBErrors
CWallet::ZapWalletTx(std::vector
<CWalletTx
>& vWtx
)
3153 vchDefaultKey
= CPubKey();
3154 DBErrors nZapWalletTxRet
= CWalletDB(*dbw
,"cr+").ZapWalletTx(vWtx
);
3155 if (nZapWalletTxRet
== DB_NEED_REWRITE
)
3157 if (dbw
->Rewrite("\x04pool"))
3160 setInternalKeyPool
.clear();
3161 setExternalKeyPool
.clear();
3162 m_pool_key_to_index
.clear();
3163 // Note: can't top-up keypool here, because wallet is locked.
3164 // User will be prompted to unlock wallet the next operation
3165 // that requires a new key.
3169 if (nZapWalletTxRet
!= DB_LOAD_OK
)
3170 return nZapWalletTxRet
;
3176 bool CWallet::SetAddressBook(const CTxDestination
& address
, const std::string
& strName
, const std::string
& strPurpose
)
3178 bool fUpdated
= false;
3180 LOCK(cs_wallet
); // mapAddressBook
3181 std::map
<CTxDestination
, CAddressBookData
>::iterator mi
= mapAddressBook
.find(address
);
3182 fUpdated
= mi
!= mapAddressBook
.end();
3183 mapAddressBook
[address
].name
= strName
;
3184 if (!strPurpose
.empty()) /* update purpose only if requested */
3185 mapAddressBook
[address
].purpose
= strPurpose
;
3187 NotifyAddressBookChanged(this, address
, strName
, ::IsMine(*this, address
) != ISMINE_NO
,
3188 strPurpose
, (fUpdated
? CT_UPDATED
: CT_NEW
) );
3189 if (!strPurpose
.empty() && !CWalletDB(*dbw
).WritePurpose(CBitcoinAddress(address
).ToString(), strPurpose
))
3191 return CWalletDB(*dbw
).WriteName(CBitcoinAddress(address
).ToString(), strName
);
3194 bool CWallet::DelAddressBook(const CTxDestination
& address
)
3197 LOCK(cs_wallet
); // mapAddressBook
3199 // Delete destdata tuples associated with address
3200 std::string strAddress
= CBitcoinAddress(address
).ToString();
3201 for (const std::pair
<std::string
, std::string
> &item
: mapAddressBook
[address
].destdata
)
3203 CWalletDB(*dbw
).EraseDestData(strAddress
, item
.first
);
3205 mapAddressBook
.erase(address
);
3208 NotifyAddressBookChanged(this, address
, "", ::IsMine(*this, address
) != ISMINE_NO
, "", CT_DELETED
);
3210 CWalletDB(*dbw
).ErasePurpose(CBitcoinAddress(address
).ToString());
3211 return CWalletDB(*dbw
).EraseName(CBitcoinAddress(address
).ToString());
3214 const std::string
& CWallet::GetAccountName(const CScript
& scriptPubKey
) const
3216 CTxDestination address
;
3217 if (ExtractDestination(scriptPubKey
, address
) && !scriptPubKey
.IsUnspendable()) {
3218 auto mi
= mapAddressBook
.find(address
);
3219 if (mi
!= mapAddressBook
.end()) {
3220 return mi
->second
.name
;
3223 // A scriptPubKey that doesn't have an entry in the address book is
3224 // associated with the default account ("").
3225 const static std::string DEFAULT_ACCOUNT_NAME
;
3226 return DEFAULT_ACCOUNT_NAME
;
3229 bool CWallet::SetDefaultKey(const CPubKey
&vchPubKey
)
3231 if (!CWalletDB(*dbw
).WriteDefaultKey(vchPubKey
))
3233 vchDefaultKey
= vchPubKey
;
3238 * Mark old keypool keys as used,
3239 * and generate all new keys
3241 bool CWallet::NewKeyPool()
3245 CWalletDB
walletdb(*dbw
);
3247 for (int64_t nIndex
: setInternalKeyPool
) {
3248 walletdb
.ErasePool(nIndex
);
3250 setInternalKeyPool
.clear();
3252 for (int64_t nIndex
: setExternalKeyPool
) {
3253 walletdb
.ErasePool(nIndex
);
3255 setExternalKeyPool
.clear();
3257 m_pool_key_to_index
.clear();
3259 if (!TopUpKeyPool()) {
3262 LogPrintf("CWallet::NewKeyPool rewrote keypool\n");
3267 size_t CWallet::KeypoolCountExternalKeys()
3269 AssertLockHeld(cs_wallet
); // setExternalKeyPool
3270 return setExternalKeyPool
.size();
3273 void CWallet::LoadKeyPool(int64_t nIndex
, const CKeyPool
&keypool
)
3275 AssertLockHeld(cs_wallet
);
3276 if (keypool
.fInternal
) {
3277 setInternalKeyPool
.insert(nIndex
);
3279 setExternalKeyPool
.insert(nIndex
);
3281 m_max_keypool_index
= std::max(m_max_keypool_index
, nIndex
);
3282 m_pool_key_to_index
[keypool
.vchPubKey
.GetID()] = nIndex
;
3284 // If no metadata exists yet, create a default with the pool key's
3285 // creation time. Note that this may be overwritten by actually
3286 // stored metadata for that key later, which is fine.
3287 CKeyID keyid
= keypool
.vchPubKey
.GetID();
3288 if (mapKeyMetadata
.count(keyid
) == 0)
3289 mapKeyMetadata
[keyid
] = CKeyMetadata(keypool
.nTime
);
3292 bool CWallet::TopUpKeyPool(unsigned int kpSize
)
3301 unsigned int nTargetSize
;
3303 nTargetSize
= kpSize
;
3305 nTargetSize
= std::max(GetArg("-keypool", DEFAULT_KEYPOOL_SIZE
), (int64_t) 0);
3307 // count amount of available keys (internal, external)
3308 // make sure the keypool of external and internal keys fits the user selected target (-keypool)
3309 int64_t missingExternal
= std::max(std::max((int64_t) nTargetSize
, (int64_t) 1) - (int64_t)setExternalKeyPool
.size(), (int64_t) 0);
3310 int64_t missingInternal
= std::max(std::max((int64_t) nTargetSize
, (int64_t) 1) - (int64_t)setInternalKeyPool
.size(), (int64_t) 0);
3312 if (!IsHDEnabled() || !CanSupportFeature(FEATURE_HD_SPLIT
))
3314 // don't create extra internal keys
3315 missingInternal
= 0;
3317 bool internal
= false;
3318 CWalletDB
walletdb(*dbw
);
3319 for (int64_t i
= missingInternal
+ missingExternal
; i
--;)
3321 if (i
< missingInternal
) {
3325 assert(m_max_keypool_index
< std::numeric_limits
<int64_t>::max()); // How in the hell did you use so many keys?
3326 int64_t index
= ++m_max_keypool_index
;
3328 CPubKey
pubkey(GenerateNewKey(walletdb
, internal
));
3329 if (!walletdb
.WritePool(index
, CKeyPool(pubkey
, internal
))) {
3330 throw std::runtime_error(std::string(__func__
) + ": writing generated key failed");
3334 setInternalKeyPool
.insert(index
);
3336 setExternalKeyPool
.insert(index
);
3338 m_pool_key_to_index
[pubkey
.GetID()] = index
;
3340 if (missingInternal
+ missingExternal
> 0) {
3341 LogPrintf("keypool added %d keys (%d internal), size=%u (%u internal)\n", missingInternal
+ missingExternal
, missingInternal
, setInternalKeyPool
.size() + setExternalKeyPool
.size(), setInternalKeyPool
.size());
3347 void CWallet::ReserveKeyFromKeyPool(int64_t& nIndex
, CKeyPool
& keypool
, bool fRequestedInternal
)
3350 keypool
.vchPubKey
= CPubKey();
3357 bool fReturningInternal
= IsHDEnabled() && CanSupportFeature(FEATURE_HD_SPLIT
) && fRequestedInternal
;
3358 std::set
<int64_t>& setKeyPool
= fReturningInternal
? setInternalKeyPool
: setExternalKeyPool
;
3360 // Get the oldest key
3361 if(setKeyPool
.empty())
3364 CWalletDB
walletdb(*dbw
);
3366 auto it
= setKeyPool
.begin();
3368 setKeyPool
.erase(it
);
3369 if (!walletdb
.ReadPool(nIndex
, keypool
)) {
3370 throw std::runtime_error(std::string(__func__
) + ": read failed");
3372 if (!HaveKey(keypool
.vchPubKey
.GetID())) {
3373 throw std::runtime_error(std::string(__func__
) + ": unknown key in key pool");
3375 if (keypool
.fInternal
!= fReturningInternal
) {
3376 throw std::runtime_error(std::string(__func__
) + ": keypool entry misclassified");
3379 assert(keypool
.vchPubKey
.IsValid());
3380 m_pool_key_to_index
.erase(keypool
.vchPubKey
.GetID());
3381 LogPrintf("keypool reserve %d\n", nIndex
);
3385 void CWallet::KeepKey(int64_t nIndex
)
3387 // Remove from key pool
3388 CWalletDB
walletdb(*dbw
);
3389 walletdb
.ErasePool(nIndex
);
3390 LogPrintf("keypool keep %d\n", nIndex
);
3393 void CWallet::ReturnKey(int64_t nIndex
, bool fInternal
, const CPubKey
& pubkey
)
3395 // Return to key pool
3399 setInternalKeyPool
.insert(nIndex
);
3401 setExternalKeyPool
.insert(nIndex
);
3403 m_pool_key_to_index
[pubkey
.GetID()] = nIndex
;
3405 LogPrintf("keypool return %d\n", nIndex
);
3408 bool CWallet::GetKeyFromPool(CPubKey
& result
, bool internal
)
3414 ReserveKeyFromKeyPool(nIndex
, keypool
, internal
);
3417 if (IsLocked()) return false;
3418 CWalletDB
walletdb(*dbw
);
3419 result
= GenerateNewKey(walletdb
, internal
);
3423 result
= keypool
.vchPubKey
;
3428 static int64_t GetOldestKeyTimeInPool(const std::set
<int64_t>& setKeyPool
, CWalletDB
& walletdb
) {
3429 if (setKeyPool
.empty()) {
3434 int64_t nIndex
= *(setKeyPool
.begin());
3435 if (!walletdb
.ReadPool(nIndex
, keypool
)) {
3436 throw std::runtime_error(std::string(__func__
) + ": read oldest key in keypool failed");
3438 assert(keypool
.vchPubKey
.IsValid());
3439 return keypool
.nTime
;
3442 int64_t CWallet::GetOldestKeyPoolTime()
3446 CWalletDB
walletdb(*dbw
);
3448 // load oldest key from keypool, get time and return
3449 int64_t oldestKey
= GetOldestKeyTimeInPool(setExternalKeyPool
, walletdb
);
3450 if (IsHDEnabled() && CanSupportFeature(FEATURE_HD_SPLIT
)) {
3451 oldestKey
= std::max(GetOldestKeyTimeInPool(setInternalKeyPool
, walletdb
), oldestKey
);
3457 std::map
<CTxDestination
, CAmount
> CWallet::GetAddressBalances()
3459 std::map
<CTxDestination
, CAmount
> balances
;
3463 for (const auto& walletEntry
: mapWallet
)
3465 const CWalletTx
*pcoin
= &walletEntry
.second
;
3467 if (!pcoin
->IsTrusted())
3470 if (pcoin
->IsCoinBase() && pcoin
->GetBlocksToMaturity() > 0)
3473 int nDepth
= pcoin
->GetDepthInMainChain();
3474 if (nDepth
< (pcoin
->IsFromMe(ISMINE_ALL
) ? 0 : 1))
3477 for (unsigned int i
= 0; i
< pcoin
->tx
->vout
.size(); i
++)
3479 CTxDestination addr
;
3480 if (!IsMine(pcoin
->tx
->vout
[i
]))
3482 if(!ExtractDestination(pcoin
->tx
->vout
[i
].scriptPubKey
, addr
))
3485 CAmount n
= IsSpent(walletEntry
.first
, i
) ? 0 : pcoin
->tx
->vout
[i
].nValue
;
3487 if (!balances
.count(addr
))
3489 balances
[addr
] += n
;
3497 std::set
< std::set
<CTxDestination
> > CWallet::GetAddressGroupings()
3499 AssertLockHeld(cs_wallet
); // mapWallet
3500 std::set
< std::set
<CTxDestination
> > groupings
;
3501 std::set
<CTxDestination
> grouping
;
3503 for (const auto& walletEntry
: mapWallet
)
3505 const CWalletTx
*pcoin
= &walletEntry
.second
;
3507 if (pcoin
->tx
->vin
.size() > 0)
3509 bool any_mine
= false;
3510 // group all input addresses with each other
3511 for (CTxIn txin
: pcoin
->tx
->vin
)
3513 CTxDestination address
;
3514 if(!IsMine(txin
)) /* If this input isn't mine, ignore it */
3516 if(!ExtractDestination(mapWallet
[txin
.prevout
.hash
].tx
->vout
[txin
.prevout
.n
].scriptPubKey
, address
))
3518 grouping
.insert(address
);
3522 // group change with input addresses
3525 for (CTxOut txout
: pcoin
->tx
->vout
)
3526 if (IsChange(txout
))
3528 CTxDestination txoutAddr
;
3529 if(!ExtractDestination(txout
.scriptPubKey
, txoutAddr
))
3531 grouping
.insert(txoutAddr
);
3534 if (grouping
.size() > 0)
3536 groupings
.insert(grouping
);
3541 // group lone addrs by themselves
3542 for (const auto& txout
: pcoin
->tx
->vout
)
3545 CTxDestination address
;
3546 if(!ExtractDestination(txout
.scriptPubKey
, address
))
3548 grouping
.insert(address
);
3549 groupings
.insert(grouping
);
3554 std::set
< std::set
<CTxDestination
>* > uniqueGroupings
; // a set of pointers to groups of addresses
3555 std::map
< CTxDestination
, std::set
<CTxDestination
>* > setmap
; // map addresses to the unique group containing it
3556 for (std::set
<CTxDestination
> _grouping
: groupings
)
3558 // make a set of all the groups hit by this new group
3559 std::set
< std::set
<CTxDestination
>* > hits
;
3560 std::map
< CTxDestination
, std::set
<CTxDestination
>* >::iterator it
;
3561 for (CTxDestination address
: _grouping
)
3562 if ((it
= setmap
.find(address
)) != setmap
.end())
3563 hits
.insert((*it
).second
);
3565 // merge all hit groups into a new single group and delete old groups
3566 std::set
<CTxDestination
>* merged
= new std::set
<CTxDestination
>(_grouping
);
3567 for (std::set
<CTxDestination
>* hit
: hits
)
3569 merged
->insert(hit
->begin(), hit
->end());
3570 uniqueGroupings
.erase(hit
);
3573 uniqueGroupings
.insert(merged
);
3576 for (CTxDestination element
: *merged
)
3577 setmap
[element
] = merged
;
3580 std::set
< std::set
<CTxDestination
> > ret
;
3581 for (std::set
<CTxDestination
>* uniqueGrouping
: uniqueGroupings
)
3583 ret
.insert(*uniqueGrouping
);
3584 delete uniqueGrouping
;
3590 std::set
<CTxDestination
> CWallet::GetAccountAddresses(const std::string
& strAccount
) const
3593 std::set
<CTxDestination
> result
;
3594 for (const std::pair
<CTxDestination
, CAddressBookData
>& item
: mapAddressBook
)
3596 const CTxDestination
& address
= item
.first
;
3597 const std::string
& strName
= item
.second
.name
;
3598 if (strName
== strAccount
)
3599 result
.insert(address
);
3604 bool CReserveKey::GetReservedKey(CPubKey
& pubkey
, bool internal
)
3609 pwallet
->ReserveKeyFromKeyPool(nIndex
, keypool
, internal
);
3611 vchPubKey
= keypool
.vchPubKey
;
3615 fInternal
= keypool
.fInternal
;
3617 assert(vchPubKey
.IsValid());
3622 void CReserveKey::KeepKey()
3625 pwallet
->KeepKey(nIndex
);
3627 vchPubKey
= CPubKey();
3630 void CReserveKey::ReturnKey()
3633 pwallet
->ReturnKey(nIndex
, fInternal
, vchPubKey
);
3636 vchPubKey
= CPubKey();
3639 void CWallet::MarkReserveKeysAsUsed(int64_t keypool_id
)
3641 AssertLockHeld(cs_wallet
);
3642 bool internal
= setInternalKeyPool
.count(keypool_id
);
3643 if (!internal
) assert(setExternalKeyPool
.count(keypool_id
));
3644 std::set
<int64_t> *setKeyPool
= internal
? &setInternalKeyPool
: &setExternalKeyPool
;
3645 auto it
= setKeyPool
->begin();
3647 CWalletDB
walletdb(*dbw
);
3648 while (it
!= std::end(*setKeyPool
)) {
3649 const int64_t& index
= *(it
);
3650 if (index
> keypool_id
) break; // set*KeyPool is ordered
3653 if (walletdb
.ReadPool(index
, keypool
)) { //TODO: This should be unnecessary
3654 m_pool_key_to_index
.erase(keypool
.vchPubKey
.GetID());
3656 walletdb
.ErasePool(index
);
3657 it
= setKeyPool
->erase(it
);
3661 bool CWallet::HasUnusedKeys(int min_keys
) const
3663 return setExternalKeyPool
.size() >= min_keys
&& (setInternalKeyPool
.size() >= min_keys
|| !CanSupportFeature(FEATURE_HD_SPLIT
));
3666 void CWallet::GetScriptForMining(std::shared_ptr
<CReserveScript
> &script
)
3668 std::shared_ptr
<CReserveKey
> rKey
= std::make_shared
<CReserveKey
>(this);
3670 if (!rKey
->GetReservedKey(pubkey
))
3674 script
->reserveScript
= CScript() << ToByteVector(pubkey
) << OP_CHECKSIG
;
3677 void CWallet::LockCoin(const COutPoint
& output
)
3679 AssertLockHeld(cs_wallet
); // setLockedCoins
3680 setLockedCoins
.insert(output
);
3683 void CWallet::UnlockCoin(const COutPoint
& output
)
3685 AssertLockHeld(cs_wallet
); // setLockedCoins
3686 setLockedCoins
.erase(output
);
3689 void CWallet::UnlockAllCoins()
3691 AssertLockHeld(cs_wallet
); // setLockedCoins
3692 setLockedCoins
.clear();
3695 bool CWallet::IsLockedCoin(uint256 hash
, unsigned int n
) const
3697 AssertLockHeld(cs_wallet
); // setLockedCoins
3698 COutPoint
outpt(hash
, n
);
3700 return (setLockedCoins
.count(outpt
) > 0);
3703 void CWallet::ListLockedCoins(std::vector
<COutPoint
>& vOutpts
) const
3705 AssertLockHeld(cs_wallet
); // setLockedCoins
3706 for (std::set
<COutPoint
>::iterator it
= setLockedCoins
.begin();
3707 it
!= setLockedCoins
.end(); it
++) {
3708 COutPoint outpt
= (*it
);
3709 vOutpts
.push_back(outpt
);
3713 /** @} */ // end of Actions
3715 void CWallet::GetKeyBirthTimes(std::map
<CTxDestination
, int64_t> &mapKeyBirth
) const {
3716 AssertLockHeld(cs_wallet
); // mapKeyMetadata
3717 mapKeyBirth
.clear();
3719 // get birth times for keys with metadata
3720 for (const auto& entry
: mapKeyMetadata
) {
3721 if (entry
.second
.nCreateTime
) {
3722 mapKeyBirth
[entry
.first
] = entry
.second
.nCreateTime
;
3726 // map in which we'll infer heights of other keys
3727 CBlockIndex
*pindexMax
= chainActive
[std::max(0, chainActive
.Height() - 144)]; // the tip can be reorganized; use a 144-block safety margin
3728 std::map
<CKeyID
, CBlockIndex
*> mapKeyFirstBlock
;
3729 std::set
<CKeyID
> setKeys
;
3731 for (const CKeyID
&keyid
: setKeys
) {
3732 if (mapKeyBirth
.count(keyid
) == 0)
3733 mapKeyFirstBlock
[keyid
] = pindexMax
;
3737 // if there are no such keys, we're done
3738 if (mapKeyFirstBlock
.empty())
3741 // find first block that affects those keys, if there are any left
3742 std::vector
<CKeyID
> vAffected
;
3743 for (std::map
<uint256
, CWalletTx
>::const_iterator it
= mapWallet
.begin(); it
!= mapWallet
.end(); it
++) {
3744 // iterate over all wallet transactions...
3745 const CWalletTx
&wtx
= (*it
).second
;
3746 BlockMap::const_iterator blit
= mapBlockIndex
.find(wtx
.hashBlock
);
3747 if (blit
!= mapBlockIndex
.end() && chainActive
.Contains(blit
->second
)) {
3748 // ... which are already in a block
3749 int nHeight
= blit
->second
->nHeight
;
3750 for (const CTxOut
&txout
: wtx
.tx
->vout
) {
3751 // iterate over all their outputs
3752 CAffectedKeysVisitor(*this, vAffected
).Process(txout
.scriptPubKey
);
3753 for (const CKeyID
&keyid
: vAffected
) {
3754 // ... and all their affected keys
3755 std::map
<CKeyID
, CBlockIndex
*>::iterator rit
= mapKeyFirstBlock
.find(keyid
);
3756 if (rit
!= mapKeyFirstBlock
.end() && nHeight
< rit
->second
->nHeight
)
3757 rit
->second
= blit
->second
;
3764 // Extract block timestamps for those keys
3765 for (std::map
<CKeyID
, CBlockIndex
*>::const_iterator it
= mapKeyFirstBlock
.begin(); it
!= mapKeyFirstBlock
.end(); it
++)
3766 mapKeyBirth
[it
->first
] = it
->second
->GetBlockTime() - TIMESTAMP_WINDOW
; // block times can be 2h off
3770 * Compute smart timestamp for a transaction being added to the wallet.
3773 * - If sending a transaction, assign its timestamp to the current time.
3774 * - If receiving a transaction outside a block, assign its timestamp to the
3776 * - If receiving a block with a future timestamp, assign all its (not already
3777 * known) transactions' timestamps to the current time.
3778 * - If receiving a block with a past timestamp, before the most recent known
3779 * transaction (that we care about), assign all its (not already known)
3780 * transactions' timestamps to the same timestamp as that most-recent-known
3782 * - If receiving a block with a past timestamp, but after the most recent known
3783 * transaction, assign all its (not already known) transactions' timestamps to
3786 * For more information see CWalletTx::nTimeSmart,
3787 * https://bitcointalk.org/?topic=54527, or
3788 * https://github.com/bitcoin/bitcoin/pull/1393.
3790 unsigned int CWallet::ComputeTimeSmart(const CWalletTx
& wtx
) const
3792 unsigned int nTimeSmart
= wtx
.nTimeReceived
;
3793 if (!wtx
.hashUnset()) {
3794 if (mapBlockIndex
.count(wtx
.hashBlock
)) {
3795 int64_t latestNow
= wtx
.nTimeReceived
;
3796 int64_t latestEntry
= 0;
3798 // Tolerate times up to the last timestamp in the wallet not more than 5 minutes into the future
3799 int64_t latestTolerated
= latestNow
+ 300;
3800 const TxItems
& txOrdered
= wtxOrdered
;
3801 for (auto it
= txOrdered
.rbegin(); it
!= txOrdered
.rend(); ++it
) {
3802 CWalletTx
* const pwtx
= it
->second
.first
;
3806 CAccountingEntry
* const pacentry
= it
->second
.second
;
3809 nSmartTime
= pwtx
->nTimeSmart
;
3811 nSmartTime
= pwtx
->nTimeReceived
;
3814 nSmartTime
= pacentry
->nTime
;
3816 if (nSmartTime
<= latestTolerated
) {
3817 latestEntry
= nSmartTime
;
3818 if (nSmartTime
> latestNow
) {
3819 latestNow
= nSmartTime
;
3825 int64_t blocktime
= mapBlockIndex
[wtx
.hashBlock
]->GetBlockTime();
3826 nTimeSmart
= std::max(latestEntry
, std::min(blocktime
, latestNow
));
3828 LogPrintf("%s: found %s in block %s not in index\n", __func__
, wtx
.GetHash().ToString(), wtx
.hashBlock
.ToString());
3834 bool CWallet::AddDestData(const CTxDestination
&dest
, const std::string
&key
, const std::string
&value
)
3836 if (boost::get
<CNoDestination
>(&dest
))
3839 mapAddressBook
[dest
].destdata
.insert(std::make_pair(key
, value
));
3840 return CWalletDB(*dbw
).WriteDestData(CBitcoinAddress(dest
).ToString(), key
, value
);
3843 bool CWallet::EraseDestData(const CTxDestination
&dest
, const std::string
&key
)
3845 if (!mapAddressBook
[dest
].destdata
.erase(key
))
3847 return CWalletDB(*dbw
).EraseDestData(CBitcoinAddress(dest
).ToString(), key
);
3850 bool CWallet::LoadDestData(const CTxDestination
&dest
, const std::string
&key
, const std::string
&value
)
3852 mapAddressBook
[dest
].destdata
.insert(std::make_pair(key
, value
));
3856 bool CWallet::GetDestData(const CTxDestination
&dest
, const std::string
&key
, std::string
*value
) const
3858 std::map
<CTxDestination
, CAddressBookData
>::const_iterator i
= mapAddressBook
.find(dest
);
3859 if(i
!= mapAddressBook
.end())
3861 CAddressBookData::StringMap::const_iterator j
= i
->second
.destdata
.find(key
);
3862 if(j
!= i
->second
.destdata
.end())
3872 std::vector
<std::string
> CWallet::GetDestValues(const std::string
& prefix
) const
3875 std::vector
<std::string
> values
;
3876 for (const auto& address
: mapAddressBook
) {
3877 for (const auto& data
: address
.second
.destdata
) {
3878 if (!data
.first
.compare(0, prefix
.size(), prefix
)) {
3879 values
.emplace_back(data
.second
);
3886 std::string
CWallet::GetWalletHelpString(bool showDebug
)
3888 std::string strUsage
= HelpMessageGroup(_("Wallet options:"));
3889 strUsage
+= HelpMessageOpt("-disablewallet", _("Do not load the wallet and disable wallet RPC calls"));
3890 strUsage
+= HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), DEFAULT_KEYPOOL_SIZE
));
3891 strUsage
+= HelpMessageOpt("-fallbackfee=<amt>", strprintf(_("A fee rate (in %s/kB) that will be used when fee estimation has insufficient data (default: %s)"),
3892 CURRENCY_UNIT
, FormatMoney(DEFAULT_FALLBACK_FEE
)));
3893 strUsage
+= HelpMessageOpt("-discardfee=<amt>", strprintf(_("The fee rate (in %s/kB) that indicates your tolerance for discarding change by adding it to the fee (default: %s). "
3894 "Note: An output is discarded if it is dust at this rate, but we will always discard up to the dust relay fee and a discard fee above that is limited by the fee estimate for the longest target"),
3895 CURRENCY_UNIT
, FormatMoney(DEFAULT_DISCARD_FEE
)));
3896 strUsage
+= HelpMessageOpt("-mintxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)"),
3897 CURRENCY_UNIT
, FormatMoney(DEFAULT_TRANSACTION_MINFEE
)));
3898 strUsage
+= HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in %s/kB) to add to transactions you send (default: %s)"),
3899 CURRENCY_UNIT
, FormatMoney(payTxFee
.GetFeePerK())));
3900 strUsage
+= HelpMessageOpt("-rescan", _("Rescan the block chain for missing wallet transactions on startup"));
3901 strUsage
+= HelpMessageOpt("-salvagewallet", _("Attempt to recover private keys from a corrupt wallet on startup"));
3902 strUsage
+= HelpMessageOpt("-spendzeroconfchange", strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), DEFAULT_SPEND_ZEROCONF_CHANGE
));
3903 strUsage
+= HelpMessageOpt("-txconfirmtarget=<n>", strprintf(_("If paytxfee is not set, include enough fee so transactions begin confirmation on average within n blocks (default: %u)"), DEFAULT_TX_CONFIRM_TARGET
));
3904 strUsage
+= HelpMessageOpt("-usehd", _("Use hierarchical deterministic key generation (HD) after BIP32. Only has effect during wallet creation/first start") + " " + strprintf(_("(default: %u)"), DEFAULT_USE_HD_WALLET
));
3905 strUsage
+= HelpMessageOpt("-walletrbf", strprintf(_("Send transactions with full-RBF opt-in enabled (default: %u)"), DEFAULT_WALLET_RBF
));
3906 strUsage
+= HelpMessageOpt("-upgradewallet", _("Upgrade wallet to latest format on startup"));
3907 strUsage
+= HelpMessageOpt("-wallet=<file>", _("Specify wallet file (within data directory)") + " " + strprintf(_("(default: %s)"), DEFAULT_WALLET_DAT
));
3908 strUsage
+= HelpMessageOpt("-walletbroadcast", _("Make the wallet broadcast transactions") + " " + strprintf(_("(default: %u)"), DEFAULT_WALLETBROADCAST
));
3909 strUsage
+= HelpMessageOpt("-walletnotify=<cmd>", _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)"));
3910 strUsage
+= HelpMessageOpt("-zapwallettxes=<mode>", _("Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup") +
3911 " " + _("(1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data)"));
3915 strUsage
+= HelpMessageGroup(_("Wallet debugging/testing options:"));
3917 strUsage
+= HelpMessageOpt("-dblogsize=<n>", strprintf("Flush wallet database activity from memory to disk log every <n> megabytes (default: %u)", DEFAULT_WALLET_DBLOGSIZE
));
3918 strUsage
+= HelpMessageOpt("-flushwallet", strprintf("Run a thread to flush wallet periodically (default: %u)", DEFAULT_FLUSHWALLET
));
3919 strUsage
+= HelpMessageOpt("-privdb", strprintf("Sets the DB_PRIVATE flag in the wallet db environment (default: %u)", DEFAULT_WALLET_PRIVDB
));
3920 strUsage
+= HelpMessageOpt("-walletrejectlongchains", strprintf(_("Wallet will not create transactions that violate mempool chain limits (default: %u)"), DEFAULT_WALLET_REJECT_LONG_CHAINS
));
3926 CWallet
* CWallet::CreateWalletFromFile(const std::string walletFile
)
3928 // needed to restore wallet transaction meta data after -zapwallettxes
3929 std::vector
<CWalletTx
> vWtx
;
3931 if (GetBoolArg("-zapwallettxes", false)) {
3932 uiInterface
.InitMessage(_("Zapping all transactions from wallet..."));
3934 std::unique_ptr
<CWalletDBWrapper
> dbw(new CWalletDBWrapper(&bitdb
, walletFile
));
3935 CWallet
*tempWallet
= new CWallet(std::move(dbw
));
3936 DBErrors nZapWalletRet
= tempWallet
->ZapWalletTx(vWtx
);
3937 if (nZapWalletRet
!= DB_LOAD_OK
) {
3938 InitError(strprintf(_("Error loading %s: Wallet corrupted"), walletFile
));
3946 uiInterface
.InitMessage(_("Loading wallet..."));
3948 int64_t nStart
= GetTimeMillis();
3949 bool fFirstRun
= true;
3950 std::unique_ptr
<CWalletDBWrapper
> dbw(new CWalletDBWrapper(&bitdb
, walletFile
));
3951 CWallet
*walletInstance
= new CWallet(std::move(dbw
));
3952 DBErrors nLoadWalletRet
= walletInstance
->LoadWallet(fFirstRun
);
3953 if (nLoadWalletRet
!= DB_LOAD_OK
)
3955 if (nLoadWalletRet
== DB_CORRUPT
) {
3956 InitError(strprintf(_("Error loading %s: Wallet corrupted"), walletFile
));
3959 else if (nLoadWalletRet
== DB_NONCRITICAL_ERROR
)
3961 InitWarning(strprintf(_("Error reading %s! All keys read correctly, but transaction data"
3962 " or address book entries might be missing or incorrect."),
3965 else if (nLoadWalletRet
== DB_TOO_NEW
) {
3966 InitError(strprintf(_("Error loading %s: Wallet requires newer version of %s"), walletFile
, _(PACKAGE_NAME
)));
3969 else if (nLoadWalletRet
== DB_NEED_REWRITE
)
3971 InitError(strprintf(_("Wallet needed to be rewritten: restart %s to complete"), _(PACKAGE_NAME
)));
3975 InitError(strprintf(_("Error loading %s"), walletFile
));
3980 if (GetBoolArg("-upgradewallet", fFirstRun
))
3982 int nMaxVersion
= GetArg("-upgradewallet", 0);
3983 if (nMaxVersion
== 0) // the -upgradewallet without argument case
3985 LogPrintf("Performing wallet upgrade to %i\n", FEATURE_LATEST
);
3986 nMaxVersion
= CLIENT_VERSION
;
3987 walletInstance
->SetMinVersion(FEATURE_LATEST
); // permanently upgrade the wallet immediately
3990 LogPrintf("Allowing wallet upgrade up to %i\n", nMaxVersion
);
3991 if (nMaxVersion
< walletInstance
->GetVersion())
3993 InitError(_("Cannot downgrade wallet"));
3996 walletInstance
->SetMaxVersion(nMaxVersion
);
4001 // Create new keyUser and set as default key
4002 if (GetBoolArg("-usehd", DEFAULT_USE_HD_WALLET
) && !walletInstance
->IsHDEnabled()) {
4004 // ensure this wallet.dat can only be opened by clients supporting HD with chain split
4005 walletInstance
->SetMinVersion(FEATURE_HD_SPLIT
);
4007 // generate a new master key
4008 CPubKey masterPubKey
= walletInstance
->GenerateNewHDMasterKey();
4009 if (!walletInstance
->SetHDMasterKey(masterPubKey
))
4010 throw std::runtime_error(std::string(__func__
) + ": Storing master key failed");
4012 CPubKey newDefaultKey
;
4013 if (walletInstance
->GetKeyFromPool(newDefaultKey
, false)) {
4014 walletInstance
->SetDefaultKey(newDefaultKey
);
4015 if (!walletInstance
->SetAddressBook(walletInstance
->vchDefaultKey
.GetID(), "", "receive")) {
4016 InitError(_("Cannot write default address") += "\n");
4021 walletInstance
->SetBestChain(chainActive
.GetLocator());
4023 else if (IsArgSet("-usehd")) {
4024 bool useHD
= GetBoolArg("-usehd", DEFAULT_USE_HD_WALLET
);
4025 if (walletInstance
->IsHDEnabled() && !useHD
) {
4026 InitError(strprintf(_("Error loading %s: You can't disable HD on an already existing HD wallet"), walletFile
));
4029 if (!walletInstance
->IsHDEnabled() && useHD
) {
4030 InitError(strprintf(_("Error loading %s: You can't enable HD on an already existing non-HD wallet"), walletFile
));
4035 LogPrintf(" wallet %15dms\n", GetTimeMillis() - nStart
);
4037 RegisterValidationInterface(walletInstance
);
4039 // Try to top up keypool. No-op if the wallet is locked.
4040 walletInstance
->TopUpKeyPool();
4042 CBlockIndex
*pindexRescan
= chainActive
.Genesis();
4043 if (!GetBoolArg("-rescan", false))
4045 CWalletDB
walletdb(*walletInstance
->dbw
);
4046 CBlockLocator locator
;
4047 if (walletdb
.ReadBestBlock(locator
))
4048 pindexRescan
= FindForkInGlobalIndex(chainActive
, locator
);
4050 if (chainActive
.Tip() && chainActive
.Tip() != pindexRescan
)
4052 //We can't rescan beyond non-pruned blocks, stop and throw an error
4053 //this might happen if a user uses an old wallet within a pruned node
4054 // or if he ran -disablewallet for a longer time, then decided to re-enable
4057 CBlockIndex
*block
= chainActive
.Tip();
4058 while (block
&& block
->pprev
&& (block
->pprev
->nStatus
& BLOCK_HAVE_DATA
) && block
->pprev
->nTx
> 0 && pindexRescan
!= block
)
4059 block
= block
->pprev
;
4061 if (pindexRescan
!= block
) {
4062 InitError(_("Prune: last wallet synchronisation goes beyond pruned data. You need to -reindex (download the whole blockchain again in case of pruned node)"));
4067 uiInterface
.InitMessage(_("Rescanning..."));
4068 LogPrintf("Rescanning last %i blocks (from block %i)...\n", chainActive
.Height() - pindexRescan
->nHeight
, pindexRescan
->nHeight
);
4070 // No need to read and scan block if block was created before
4071 // our wallet birthday (as adjusted for block time variability)
4072 while (pindexRescan
&& walletInstance
->nTimeFirstKey
&& (pindexRescan
->GetBlockTime() < (walletInstance
->nTimeFirstKey
- TIMESTAMP_WINDOW
))) {
4073 pindexRescan
= chainActive
.Next(pindexRescan
);
4076 nStart
= GetTimeMillis();
4077 walletInstance
->ScanForWalletTransactions(pindexRescan
, true);
4078 LogPrintf(" rescan %15dms\n", GetTimeMillis() - nStart
);
4079 walletInstance
->SetBestChain(chainActive
.GetLocator());
4080 walletInstance
->dbw
->IncrementUpdateCounter();
4082 // Restore wallet transaction metadata after -zapwallettxes=1
4083 if (GetBoolArg("-zapwallettxes", false) && GetArg("-zapwallettxes", "1") != "2")
4085 CWalletDB
walletdb(*walletInstance
->dbw
);
4087 for (const CWalletTx
& wtxOld
: vWtx
)
4089 uint256 hash
= wtxOld
.GetHash();
4090 std::map
<uint256
, CWalletTx
>::iterator mi
= walletInstance
->mapWallet
.find(hash
);
4091 if (mi
!= walletInstance
->mapWallet
.end())
4093 const CWalletTx
* copyFrom
= &wtxOld
;
4094 CWalletTx
* copyTo
= &mi
->second
;
4095 copyTo
->mapValue
= copyFrom
->mapValue
;
4096 copyTo
->vOrderForm
= copyFrom
->vOrderForm
;
4097 copyTo
->nTimeReceived
= copyFrom
->nTimeReceived
;
4098 copyTo
->nTimeSmart
= copyFrom
->nTimeSmart
;
4099 copyTo
->fFromMe
= copyFrom
->fFromMe
;
4100 copyTo
->strFromAccount
= copyFrom
->strFromAccount
;
4101 copyTo
->nOrderPos
= copyFrom
->nOrderPos
;
4102 walletdb
.WriteTx(*copyTo
);
4107 walletInstance
->SetBroadcastTransactions(GetBoolArg("-walletbroadcast", DEFAULT_WALLETBROADCAST
));
4110 LOCK(walletInstance
->cs_wallet
);
4111 LogPrintf("setKeyPool.size() = %u\n", walletInstance
->GetKeyPoolSize());
4112 LogPrintf("mapWallet.size() = %u\n", walletInstance
->mapWallet
.size());
4113 LogPrintf("mapAddressBook.size() = %u\n", walletInstance
->mapAddressBook
.size());
4116 return walletInstance
;
4119 bool CWallet::InitLoadWallet()
4121 if (GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET
)) {
4122 LogPrintf("Wallet disabled!\n");
4126 for (const std::string
& walletFile
: gArgs
.GetArgs("-wallet")) {
4127 CWallet
* const pwallet
= CreateWalletFromFile(walletFile
);
4131 vpwallets
.push_back(pwallet
);
4137 std::atomic
<bool> CWallet::fFlushScheduled(false);
4139 void CWallet::postInitProcess(CScheduler
& scheduler
)
4141 // Add wallet transactions that aren't already in a block to mempool
4142 // Do this here as mempool requires genesis block to be loaded
4143 ReacceptWalletTransactions();
4145 // Run a thread to flush wallet periodically
4146 if (!CWallet::fFlushScheduled
.exchange(true)) {
4147 scheduler
.scheduleEvery(MaybeCompactWalletDB
, 500);
4151 bool CWallet::ParameterInteraction()
4153 SoftSetArg("-wallet", DEFAULT_WALLET_DAT
);
4154 const bool is_multiwallet
= gArgs
.GetArgs("-wallet").size() > 1;
4156 if (GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET
))
4159 if (GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY
) && SoftSetBoolArg("-walletbroadcast", false)) {
4160 LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -walletbroadcast=0\n", __func__
);
4163 if (GetBoolArg("-salvagewallet", false)) {
4164 if (is_multiwallet
) {
4165 return InitError(strprintf("%s is only allowed with a single wallet file", "-salvagewallet"));
4167 // Rewrite just private keys: rescan to find transactions
4168 if (SoftSetBoolArg("-rescan", true)) {
4169 LogPrintf("%s: parameter interaction: -salvagewallet=1 -> setting -rescan=1\n", __func__
);
4173 int zapwallettxes
= GetArg("-zapwallettxes", 0);
4174 // -zapwallettxes implies dropping the mempool on startup
4175 if (zapwallettxes
!= 0 && SoftSetBoolArg("-persistmempool", false)) {
4176 LogPrintf("%s: parameter interaction: -zapwallettxes=%s -> setting -persistmempool=0\n", __func__
, zapwallettxes
);
4179 // -zapwallettxes implies a rescan
4180 if (zapwallettxes
!= 0) {
4181 if (is_multiwallet
) {
4182 return InitError(strprintf("%s is only allowed with a single wallet file", "-zapwallettxes"));
4184 if (SoftSetBoolArg("-rescan", true)) {
4185 LogPrintf("%s: parameter interaction: -zapwallettxes=%s -> setting -rescan=1\n", __func__
, zapwallettxes
);
4189 if (is_multiwallet
) {
4190 if (GetBoolArg("-upgradewallet", false)) {
4191 return InitError(strprintf("%s is only allowed with a single wallet file", "-upgradewallet"));
4195 if (GetBoolArg("-sysperms", false))
4196 return InitError("-sysperms is not allowed in combination with enabled wallet functionality");
4197 if (GetArg("-prune", 0) && GetBoolArg("-rescan", false))
4198 return InitError(_("Rescans are not possible in pruned mode. You will need to use -reindex which will download the whole blockchain again."));
4200 if (::minRelayTxFee
.GetFeePerK() > HIGH_TX_FEE_PER_KB
)
4201 InitWarning(AmountHighWarn("-minrelaytxfee") + " " +
4202 _("The wallet will avoid paying less than the minimum relay fee."));
4204 if (IsArgSet("-mintxfee"))
4207 if (!ParseMoney(GetArg("-mintxfee", ""), n
) || 0 == n
)
4208 return InitError(AmountErrMsg("mintxfee", GetArg("-mintxfee", "")));
4209 if (n
> HIGH_TX_FEE_PER_KB
)
4210 InitWarning(AmountHighWarn("-mintxfee") + " " +
4211 _("This is the minimum transaction fee you pay on every transaction."));
4212 CWallet::minTxFee
= CFeeRate(n
);
4214 if (IsArgSet("-fallbackfee"))
4216 CAmount nFeePerK
= 0;
4217 if (!ParseMoney(GetArg("-fallbackfee", ""), nFeePerK
))
4218 return InitError(strprintf(_("Invalid amount for -fallbackfee=<amount>: '%s'"), GetArg("-fallbackfee", "")));
4219 if (nFeePerK
> HIGH_TX_FEE_PER_KB
)
4220 InitWarning(AmountHighWarn("-fallbackfee") + " " +
4221 _("This is the transaction fee you may pay when fee estimates are not available."));
4222 CWallet::fallbackFee
= CFeeRate(nFeePerK
);
4224 if (IsArgSet("-discardfee"))
4226 CAmount nFeePerK
= 0;
4227 if (!ParseMoney(GetArg("-discardfee", ""), nFeePerK
))
4228 return InitError(strprintf(_("Invalid amount for -discardfee=<amount>: '%s'"), GetArg("-discardfee", "")));
4229 if (nFeePerK
> HIGH_TX_FEE_PER_KB
)
4230 InitWarning(AmountHighWarn("-discardfee") + " " +
4231 _("This is the transaction fee you may discard if change is smaller than dust at this level"));
4232 CWallet::m_discard_rate
= CFeeRate(nFeePerK
);
4234 if (IsArgSet("-paytxfee"))
4236 CAmount nFeePerK
= 0;
4237 if (!ParseMoney(GetArg("-paytxfee", ""), nFeePerK
))
4238 return InitError(AmountErrMsg("paytxfee", GetArg("-paytxfee", "")));
4239 if (nFeePerK
> HIGH_TX_FEE_PER_KB
)
4240 InitWarning(AmountHighWarn("-paytxfee") + " " +
4241 _("This is the transaction fee you will pay if you send a transaction."));
4243 payTxFee
= CFeeRate(nFeePerK
, 1000);
4244 if (payTxFee
< ::minRelayTxFee
)
4246 return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)"),
4247 GetArg("-paytxfee", ""), ::minRelayTxFee
.ToString()));
4250 if (IsArgSet("-maxtxfee"))
4252 CAmount nMaxFee
= 0;
4253 if (!ParseMoney(GetArg("-maxtxfee", ""), nMaxFee
))
4254 return InitError(AmountErrMsg("maxtxfee", GetArg("-maxtxfee", "")));
4255 if (nMaxFee
> HIGH_MAX_TX_FEE
)
4256 InitWarning(_("-maxtxfee is set very high! Fees this large could be paid on a single transaction."));
4258 if (CFeeRate(maxTxFee
, 1000) < ::minRelayTxFee
)
4260 return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay fee of %s to prevent stuck transactions)"),
4261 GetArg("-maxtxfee", ""), ::minRelayTxFee
.ToString()));
4264 nTxConfirmTarget
= GetArg("-txconfirmtarget", DEFAULT_TX_CONFIRM_TARGET
);
4265 bSpendZeroConfChange
= GetBoolArg("-spendzeroconfchange", DEFAULT_SPEND_ZEROCONF_CHANGE
);
4266 fWalletRbf
= GetBoolArg("-walletrbf", DEFAULT_WALLET_RBF
);
4271 bool CWallet::BackupWallet(const std::string
& strDest
)
4273 return dbw
->Backup(strDest
);
4276 CKeyPool::CKeyPool()
4282 CKeyPool::CKeyPool(const CPubKey
& vchPubKeyIn
, bool internalIn
)
4285 vchPubKey
= vchPubKeyIn
;
4286 fInternal
= internalIn
;
4289 CWalletKey::CWalletKey(int64_t nExpires
)
4291 nTimeCreated
= (nExpires
? GetTime() : 0);
4292 nTimeExpires
= nExpires
;
4295 void CMerkleTx::SetMerkleBranch(const CBlockIndex
* pindex
, int posInBlock
)
4297 // Update the tx's hashBlock
4298 hashBlock
= pindex
->GetBlockHash();
4300 // set the position of the transaction in the block
4301 nIndex
= posInBlock
;
4304 int CMerkleTx::GetDepthInMainChain(const CBlockIndex
* &pindexRet
) const
4309 AssertLockHeld(cs_main
);
4311 // Find the block it claims to be in
4312 BlockMap::iterator mi
= mapBlockIndex
.find(hashBlock
);
4313 if (mi
== mapBlockIndex
.end())
4315 CBlockIndex
* pindex
= (*mi
).second
;
4316 if (!pindex
|| !chainActive
.Contains(pindex
))
4320 return ((nIndex
== -1) ? (-1) : 1) * (chainActive
.Height() - pindex
->nHeight
+ 1);
4323 int CMerkleTx::GetBlocksToMaturity() const
4327 return std::max(0, (COINBASE_MATURITY
+1) - GetDepthInMainChain());
4331 bool CMerkleTx::AcceptToMemoryPool(const CAmount
& nAbsurdFee
, CValidationState
& state
)
4333 return ::AcceptToMemoryPool(mempool
, state
, tx
, true, NULL
, NULL
, false, nAbsurdFee
);