1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2012 The Bitcoin developers
3 // Distributed under the MIT/X11 software license, see the accompanying
4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
5 #ifndef BITCOIN_WALLET_H
6 #define BITCOIN_WALLET_H
17 // A CWallet is an extension of a keystore, which also maintains a set of
18 // transactions and balances, and provides the ability to create new
20 class CWallet : public CCryptoKeyStore
23 bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, std::set<std::pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const;
24 bool SelectCoins(int64 nTargetValue, std::set<std::pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const;
26 CWalletDB *pwalletdbEncryption;
31 mutable CCriticalSection cs_wallet;
34 std::string strWalletFile;
36 std::set<int64> setKeyPool;
39 typedef std::map<unsigned int, CMasterKey> MasterKeyMap;
40 MasterKeyMap mapMasterKeys;
41 unsigned int nMasterKeyMaxID;
48 pwalletdbEncryption = NULL;
50 CWallet(std::string strWalletFileIn)
53 strWalletFile = strWalletFileIn;
56 pwalletdbEncryption = NULL;
59 std::map<uint256, CWalletTx> mapWallet;
60 std::vector<uint256> vWalletUpdated;
62 std::map<uint256, int> mapRequestCount;
64 std::map<CBitcoinAddress, std::string> mapAddressBook;
66 std::vector<unsigned char> vchDefaultKey;
68 // keystore implementation
69 // Adds a key to the store, and saves it to disk.
70 bool AddKey(const CKey& key);
71 // Adds a key to the store, without saving it to disk (used by LoadWallet)
72 bool LoadKey(const CKey& key) { return CCryptoKeyStore::AddKey(key); }
74 bool LoadMinVersion(int nVersion) { nWalletVersion = nVersion; return true; }
76 // Adds an encrypted key to the store, and saves it to disk.
77 bool AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
78 // Adds an encrypted key to the store, without saving it to disk (used by LoadWallet)
79 bool LoadCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret) { return CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret); }
80 bool AddCScript(const CScript& redeemScript);
81 bool LoadCScript(const CScript& redeemScript) { return CCryptoKeyStore::AddCScript(redeemScript); }
83 bool Unlock(const SecureString& strWalletPassphrase);
84 bool ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase);
85 bool EncryptWallet(const SecureString& strWalletPassphrase);
88 bool AddToWallet(const CWalletTx& wtxIn);
89 bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate = false, bool fFindBlock = false);
90 bool EraseFromWallet(uint256 hash);
91 void WalletUpdateSpent(const CTransaction& prevout);
92 int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate = false);
93 int ScanForWalletTransaction(const uint256& hashTx);
94 void ReacceptWalletTransactions();
95 void ResendWalletTransactions();
96 int64 GetBalance() const;
97 int64 GetUnconfirmedBalance() const;
98 bool CreateTransaction(const std::vector<std::pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet);
99 bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet);
100 bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey);
101 std::string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
102 std::string SendMoneyToBitcoinAddress(const CBitcoinAddress& address, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
106 int64 AddReserveKey(const CKeyPool& keypool);
107 void ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool);
108 void KeepKey(int64 nIndex);
109 void ReturnKey(int64 nIndex);
110 bool GetKeyFromPool(std::vector<unsigned char> &key, bool fAllowReuse=true);
111 int64 GetOldestKeyPoolTime();
112 void GetAllReserveAddresses(std::set<CBitcoinAddress>& setAddress);
114 bool IsMine(const CTxIn& txin) const;
115 int64 GetDebit(const CTxIn& txin) const;
116 bool IsMine(const CTxOut& txout) const
118 return ::IsMine(*this, txout.scriptPubKey);
120 int64 GetCredit(const CTxOut& txout) const
122 if (!MoneyRange(txout.nValue))
123 throw std::runtime_error("CWallet::GetCredit() : value out of range");
124 return (IsMine(txout) ? txout.nValue : 0);
126 bool IsChange(const CTxOut& txout) const;
127 int64 GetChange(const CTxOut& txout) const
129 if (!MoneyRange(txout.nValue))
130 throw std::runtime_error("CWallet::GetChange() : value out of range");
131 return (IsChange(txout) ? txout.nValue : 0);
133 bool IsMine(const CTransaction& tx) const
135 BOOST_FOREACH(const CTxOut& txout, tx.vout)
140 bool IsFromMe(const CTransaction& tx) const
142 return (GetDebit(tx) > 0);
144 int64 GetDebit(const CTransaction& tx) const
147 BOOST_FOREACH(const CTxIn& txin, tx.vin)
149 nDebit += GetDebit(txin);
150 if (!MoneyRange(nDebit))
151 throw std::runtime_error("CWallet::GetDebit() : value out of range");
155 int64 GetCredit(const CTransaction& tx) const
158 BOOST_FOREACH(const CTxOut& txout, tx.vout)
160 nCredit += GetCredit(txout);
161 if (!MoneyRange(nCredit))
162 throw std::runtime_error("CWallet::GetCredit() : value out of range");
166 int64 GetChange(const CTransaction& tx) const
169 BOOST_FOREACH(const CTxOut& txout, tx.vout)
171 nChange += GetChange(txout);
172 if (!MoneyRange(nChange))
173 throw std::runtime_error("CWallet::GetChange() : value out of range");
177 void SetBestChain(const CBlockLocator& loc)
179 CWalletDB walletdb(strWalletFile);
180 walletdb.WriteBestBlock(loc);
183 int LoadWallet(bool& fFirstRunRet);
184 // bool BackupWallet(const std::string& strDest);
186 bool SetAddressBookName(const CBitcoinAddress& address, const std::string& strName);
188 bool DelAddressBookName(const CBitcoinAddress& address);
190 void UpdatedTransaction(const uint256 &hashTx)
192 CRITICAL_BLOCK(cs_wallet)
193 vWalletUpdated.push_back(hashTx);
196 void PrintWallet(const CBlock& block);
198 void Inventory(const uint256 &hash)
200 CRITICAL_BLOCK(cs_wallet)
202 std::map<uint256, int>::iterator mi = mapRequestCount.find(hash);
203 if (mi != mapRequestCount.end())
210 return setKeyPool.size();
213 bool GetTransaction(const uint256 &hashTx, CWalletTx& wtx);
215 bool SetDefaultKey(const std::vector<unsigned char> &vchPubKey);
217 bool SetMinVersion(int nVersion, CWalletDB* pwalletdbIn = NULL);
226 std::vector<unsigned char> vchPubKey;
228 CReserveKey(CWallet* pwalletIn)
241 std::vector<unsigned char> GetReservedKey();
247 // A transaction with a bunch of additional info that only the owner cares
248 // about. It includes any unrecorded transactions needed to link it back
249 // to the block chain.
251 class CWalletTx : public CMerkleTx
254 const CWallet* pwallet;
257 std::vector<CMerkleTx> vtxPrev;
258 std::map<std::string, std::string> mapValue;
259 std::vector<std::pair<std::string, std::string> > vOrderForm;
260 unsigned int fTimeReceivedIsTxTime;
261 unsigned int nTimeReceived; // time received by this node
263 std::string strFromAccount;
264 std::vector<char> vfSpent; // which outputs are already spent
267 mutable char fDebitCached;
268 mutable char fCreditCached;
269 mutable char fAvailableCreditCached;
270 mutable char fChangeCached;
271 mutable int64 nDebitCached;
272 mutable int64 nCreditCached;
273 mutable int64 nAvailableCreditCached;
274 mutable int64 nChangeCached;
276 // memory only UI hints
277 mutable unsigned int nTimeDisplayed;
278 mutable int nLinesDisplayed;
279 mutable char fConfirmedDisplayed;
286 CWalletTx(const CWallet* pwalletIn)
291 CWalletTx(const CWallet* pwalletIn, const CMerkleTx& txIn) : CMerkleTx(txIn)
296 CWalletTx(const CWallet* pwalletIn, const CTransaction& txIn) : CMerkleTx(txIn)
301 void Init(const CWallet* pwalletIn)
307 fTimeReceivedIsTxTime = false;
310 strFromAccount.clear();
312 fDebitCached = false;
313 fCreditCached = false;
314 fAvailableCreditCached = false;
315 fChangeCached = false;
318 nAvailableCreditCached = 0;
322 fConfirmedDisplayed = false;
327 CWalletTx* pthis = const_cast<CWalletTx*>(this);
334 pthis->mapValue["fromaccount"] = pthis->strFromAccount;
337 BOOST_FOREACH(char f, vfSpent)
339 str += (f ? '1' : '0');
343 pthis->mapValue["spent"] = str;
346 nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion,ser_action);
349 READWRITE(vOrderForm);
350 READWRITE(fTimeReceivedIsTxTime);
351 READWRITE(nTimeReceived);
357 pthis->strFromAccount = pthis->mapValue["fromaccount"];
359 if (mapValue.count("spent"))
360 BOOST_FOREACH(char c, pthis->mapValue["spent"])
361 pthis->vfSpent.push_back(c != '0');
363 pthis->vfSpent.assign(vout.size(), fSpent);
366 pthis->mapValue.erase("fromaccount");
367 pthis->mapValue.erase("version");
368 pthis->mapValue.erase("spent");
371 // marks certain txout's as spent
372 // returns true if any update took place
373 bool UpdateSpent(const std::vector<char>& vfNewSpent)
375 bool fReturn = false;
376 for (int i=0; i < vfNewSpent.size(); i++)
378 if (i == vfSpent.size())
381 if (vfNewSpent[i] && !vfSpent[i])
385 fAvailableCreditCached = false;
391 // make sure balances are recalculated
394 fCreditCached = false;
395 fAvailableCreditCached = false;
396 fDebitCached = false;
397 fChangeCached = false;
400 void BindWallet(CWallet *pwalletIn)
406 void MarkSpent(unsigned int nOut)
408 if (nOut >= vout.size())
409 throw std::runtime_error("CWalletTx::MarkSpent() : nOut out of range");
410 vfSpent.resize(vout.size());
413 vfSpent[nOut] = true;
414 fAvailableCreditCached = false;
418 bool IsSpent(unsigned int nOut) const
420 if (nOut >= vout.size())
421 throw std::runtime_error("CWalletTx::IsSpent() : nOut out of range");
422 if (nOut >= vfSpent.size())
424 return (!!vfSpent[nOut]);
427 int64 GetDebit() const
433 nDebitCached = pwallet->GetDebit(*this);
438 int64 GetCredit(bool fUseCache=true) const
440 // Must wait until coinbase is safely deep enough in the chain before valuing it
441 if (IsCoinBase() && GetBlocksToMaturity() > 0)
444 // GetBalance can assume transactions in mapWallet won't change
445 if (fUseCache && fCreditCached)
446 return nCreditCached;
447 nCreditCached = pwallet->GetCredit(*this);
448 fCreditCached = true;
449 return nCreditCached;
452 int64 GetAvailableCredit(bool fUseCache=true) const
454 // Must wait until coinbase is safely deep enough in the chain before valuing it
455 if (IsCoinBase() && GetBlocksToMaturity() > 0)
458 if (fUseCache && fAvailableCreditCached)
459 return nAvailableCreditCached;
462 for (int i = 0; i < vout.size(); i++)
466 const CTxOut &txout = vout[i];
467 nCredit += pwallet->GetCredit(txout);
468 if (!MoneyRange(nCredit))
469 throw std::runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
473 nAvailableCreditCached = nCredit;
474 fAvailableCreditCached = true;
479 int64 GetChange() const
482 return nChangeCached;
483 nChangeCached = pwallet->GetChange(*this);
484 fChangeCached = true;
485 return nChangeCached;
488 void GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, std::list<std::pair<CBitcoinAddress, int64> >& listReceived,
489 std::list<std::pair<CBitcoinAddress, int64> >& listSent, int64& nFee, std::string& strSentAccount) const;
491 void GetAccountAmounts(const std::string& strAccount, int64& nGenerated, int64& nReceived,
492 int64& nSent, int64& nFee) const;
494 bool IsFromMe() const
496 return (GetDebit() > 0);
499 bool IsConfirmed() const
501 // Quick answer in most cases
504 if (GetDepthInMainChain() >= 1)
506 if (!IsFromMe()) // using wtx's cached debit
509 // If no confirmations but it's from us, we can still
510 // consider it confirmed if all dependencies are confirmed
511 std::map<uint256, const CMerkleTx*> mapPrev;
512 std::vector<const CMerkleTx*> vWorkQueue;
513 vWorkQueue.reserve(vtxPrev.size()+1);
514 vWorkQueue.push_back(this);
515 for (int i = 0; i < vWorkQueue.size(); i++)
517 const CMerkleTx* ptx = vWorkQueue[i];
521 if (ptx->GetDepthInMainChain() >= 1)
523 if (!pwallet->IsFromMe(*ptx))
527 BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
528 mapPrev[tx.GetHash()] = &tx;
530 BOOST_FOREACH(const CTxIn& txin, ptx->vin)
532 if (!mapPrev.count(txin.prevout.hash))
534 vWorkQueue.push_back(mapPrev[txin.prevout.hash]);
542 int64 GetTxTime() const;
543 int GetRequestCount() const;
545 void AddSupportingTransactions(CTxDB& txdb);
547 bool AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs=true);
548 bool AcceptWalletTransaction();
550 void RelayWalletTransaction(CTxDB& txdb);
551 void RelayWalletTransaction();
556 // Private key that includes an expiration date in case it never gets used.
564 std::string strComment;
565 //// todo: add something to note what created it (user, getnewaddress, change)
566 //// maybe should have a map<string, string> property map
568 CWalletKey(int64 nExpires=0)
570 nTimeCreated = (nExpires ? GetTime() : 0);
571 nTimeExpires = nExpires;
576 if (!(nType & SER_GETHASH))
578 READWRITE(vchPrivKey);
579 READWRITE(nTimeCreated);
580 READWRITE(nTimeExpires);
581 READWRITE(strComment);
591 // Account information.
592 // Stored in wallet with key "acc"+string account name
597 std::vector<unsigned char> vchPubKey;
611 if (!(nType & SER_GETHASH))
613 READWRITE(vchPubKey);
620 // Internal transfers.
621 // Database key is acentry<account><counter>
623 class CAccountingEntry
626 std::string strAccount;
629 std::string strOtherAccount;
630 std::string strComment;
642 strOtherAccount.clear();
648 if (!(nType & SER_GETHASH))
650 // Note: strAccount is serialized as part of the key, not here.
651 READWRITE(nCreditDebit);
653 READWRITE(strOtherAccount);
654 READWRITE(strComment);
658 bool GetWalletFile(CWallet* pwallet, std::string &strWalletFileOut);