Projects : bitcoin : bitcoin_dumpblock_no_losers

bitcoin/src/wallet.cpp

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1// Copyright (c) 2009-2010 Satoshi Nakamoto
2// Copyright (c) 2011 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
6#include "headers.h"
7#include "db.h"
8#include "crypter.h"
9
10using namespace std;
11
12
13//////////////////////////////////////////////////////////////////////////////
14//
15// mapWallet
16//
17
18bool CWallet::AddKey(const CKey& key)
19{
20 if (!CCryptoKeyStore::AddKey(key))
21 return false;
22 if (!fFileBacked)
23 return true;
24 if (!IsCrypted())
25 return CWalletDB(strWalletFile).WriteKey(key.GetPubKey(), key.GetPrivKey());
26 return true;
27}
28
29bool CWallet::AddCryptedKey(const vector<unsigned char> &vchPubKey, const vector<unsigned char> &vchCryptedSecret)
30{
31 if (!CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret))
32 return false;
33 if (!fFileBacked)
34 return true;
35 CRITICAL_BLOCK(cs_wallet)
36 {
37 if (pwalletdbEncryption)
38 return pwalletdbEncryption->WriteCryptedKey(vchPubKey, vchCryptedSecret);
39 else
40 return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret);
41 }
42 return false;
43}
44
45bool CWallet::Unlock(const SecureString& strWalletPassphrase)
46{
47 if (!IsLocked())
48 return false;
49
50 CCrypter crypter;
51 CKeyingMaterial vMasterKey;
52
53 CRITICAL_BLOCK(cs_wallet)
54 BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
55 {
56 if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
57 return false;
58 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
59 return false;
60 if (CCryptoKeyStore::Unlock(vMasterKey))
61 return true;
62 }
63 return false;
64}
65
66bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
67{
68 bool fWasLocked = IsLocked();
69
70 CRITICAL_BLOCK(cs_wallet)
71 {
72 Lock();
73
74 CCrypter crypter;
75 CKeyingMaterial vMasterKey;
76 BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
77 {
78 if(!crypter.SetKeyFromPassphrase(strOldWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
79 return false;
80 if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
81 return false;
82 if (CCryptoKeyStore::Unlock(vMasterKey))
83 {
84 int64 nStartTime = GetTimeMillis();
85 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
86 pMasterKey.second.nDeriveIterations = pMasterKey.second.nDeriveIterations * (100 / ((double)(GetTimeMillis() - nStartTime)));
87
88 nStartTime = GetTimeMillis();
89 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
90 pMasterKey.second.nDeriveIterations = (pMasterKey.second.nDeriveIterations + pMasterKey.second.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
91
92 if (pMasterKey.second.nDeriveIterations < 25000)
93 pMasterKey.second.nDeriveIterations = 25000;
94
95 printf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);
96
97 if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
98 return false;
99 if (!crypter.Encrypt(vMasterKey, pMasterKey.second.vchCryptedKey))
100 return false;
101 CWalletDB(strWalletFile).WriteMasterKey(pMasterKey.first, pMasterKey.second);
102 if (fWasLocked)
103 Lock();
104 return true;
105 }
106 }
107 }
108
109 return false;
110}
111
112
113// This class implements an addrIncoming entry that causes pre-0.4
114// clients to crash on startup if reading a private-key-encrypted wallet.
115class CCorruptAddress
116{
117public:
118 IMPLEMENT_SERIALIZE
119 (
120 if (nType & SER_DISK)
121 READWRITE(nVersion);
122 )
123};
124
125bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
126{
127 if (IsCrypted())
128 return false;
129
130 CKeyingMaterial vMasterKey;
131 RandAddSeedPerfmon();
132
133 vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
134 RAND_bytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
135
136 CMasterKey kMasterKey;
137
138 RandAddSeedPerfmon();
139 kMasterKey.vchSalt.resize(WALLET_CRYPTO_SALT_SIZE);
140 RAND_bytes(&kMasterKey.vchSalt[0], WALLET_CRYPTO_SALT_SIZE);
141
142 CCrypter crypter;
143 int64 nStartTime = GetTimeMillis();
144 crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, 25000, kMasterKey.nDerivationMethod);
145 kMasterKey.nDeriveIterations = 2500000 / ((double)(GetTimeMillis() - nStartTime));
146
147 nStartTime = GetTimeMillis();
148 crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod);
149 kMasterKey.nDeriveIterations = (kMasterKey.nDeriveIterations + kMasterKey.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;
150
151 if (kMasterKey.nDeriveIterations < 25000)
152 kMasterKey.nDeriveIterations = 25000;
153
154 printf("Encrypting Wallet with an nDeriveIterations of %i\n", kMasterKey.nDeriveIterations);
155
156 if (!crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod))
157 return false;
158 if (!crypter.Encrypt(vMasterKey, kMasterKey.vchCryptedKey))
159 return false;
160
161 CRITICAL_BLOCK(cs_wallet)
162 {
163 mapMasterKeys[++nMasterKeyMaxID] = kMasterKey;
164 if (fFileBacked)
165 {
166 pwalletdbEncryption = new CWalletDB(strWalletFile);
167 pwalletdbEncryption->TxnBegin();
168 pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
169 }
170
171 if (!EncryptKeys(vMasterKey))
172 {
173 if (fFileBacked)
174 pwalletdbEncryption->TxnAbort();
175 exit(1); //We now probably have half of our keys encrypted in memory, and half not...die and let the user reload their unencrypted wallet.
176 }
177
178 if (fFileBacked)
179 {
180 CCorruptAddress corruptAddress;
181 pwalletdbEncryption->WriteSetting("addrIncoming", corruptAddress);
182 if (!pwalletdbEncryption->TxnCommit())
183 exit(1); //We now have keys encrypted in memory, but no on disk...die to avoid confusion and let the user reload their unencrypted wallet.
184
185 delete pwalletdbEncryption;
186 pwalletdbEncryption = NULL;
187 }
188
189 Lock();
190 Unlock(strWalletPassphrase);
191 NewKeyPool();
192 Lock();
193
194 // Need to completely rewrite the wallet file; if we don't, bdb might keep
195 // bits of the unencrypted private key in slack space in the database file.
196 CDB::Rewrite(strWalletFile);
197 }
198
199 return true;
200}
201
202void CWallet::WalletUpdateSpent(const CTransaction &tx)
203{
204 // Anytime a signature is successfully verified, it's proof the outpoint is spent.
205 // Update the wallet spent flag if it doesn't know due to wallet.dat being
206 // restored from backup or the user making copies of wallet.dat.
207 CRITICAL_BLOCK(cs_wallet)
208 {
209 BOOST_FOREACH(const CTxIn& txin, tx.vin)
210 {
211 map<uint256, CWalletTx>::iterator mi = mapWallet.find(txin.prevout.hash);
212 if (mi != mapWallet.end())
213 {
214 CWalletTx& wtx = (*mi).second;
215 if (!wtx.IsSpent(txin.prevout.n) && IsMine(wtx.vout[txin.prevout.n]))
216 {
217 printf("WalletUpdateSpent found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
218 wtx.MarkSpent(txin.prevout.n);
219 wtx.WriteToDisk();
220 vWalletUpdated.push_back(txin.prevout.hash);
221 }
222 }
223 }
224 }
225}
226
227void CWallet::MarkDirty()
228{
229 CRITICAL_BLOCK(cs_wallet)
230 {
231 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
232 item.second.MarkDirty();
233 }
234}
235
236bool CWallet::AddToWallet(const CWalletTx& wtxIn)
237{
238 uint256 hash = wtxIn.GetHash();
239 CRITICAL_BLOCK(cs_wallet)
240 {
241 // Inserts only if not already there, returns tx inserted or tx found
242 pair<map<uint256, CWalletTx>::iterator, bool> ret = mapWallet.insert(make_pair(hash, wtxIn));
243 CWalletTx& wtx = (*ret.first).second;
244 wtx.pwallet = this;
245 bool fInsertedNew = ret.second;
246 if (fInsertedNew)
247 wtx.nTimeReceived = GetAdjustedTime();
248
249 bool fUpdated = false;
250 if (!fInsertedNew)
251 {
252 // Merge
253 if (wtxIn.hashBlock != 0 && wtxIn.hashBlock != wtx.hashBlock)
254 {
255 wtx.hashBlock = wtxIn.hashBlock;
256 fUpdated = true;
257 }
258 if (wtxIn.nIndex != -1 && (wtxIn.vMerkleBranch != wtx.vMerkleBranch || wtxIn.nIndex != wtx.nIndex))
259 {
260 wtx.vMerkleBranch = wtxIn.vMerkleBranch;
261 wtx.nIndex = wtxIn.nIndex;
262 fUpdated = true;
263 }
264 if (wtxIn.fFromMe && wtxIn.fFromMe != wtx.fFromMe)
265 {
266 wtx.fFromMe = wtxIn.fFromMe;
267 fUpdated = true;
268 }
269 fUpdated |= wtx.UpdateSpent(wtxIn.vfSpent);
270 }
271
272 //// debug print
273 printf("AddToWallet %s %s%s\n", wtxIn.GetHash().ToString().c_str(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
274
275 // Write to disk
276 if (fInsertedNew || fUpdated)
277 if (!wtx.WriteToDisk())
278 return false;
279 // If default receiving address gets used, replace it with a new one
280 CScript scriptDefaultKey;
281 scriptDefaultKey.SetBitcoinAddress(vchDefaultKey);
282 BOOST_FOREACH(const CTxOut& txout, wtx.vout)
283 {
284 if (txout.scriptPubKey == scriptDefaultKey)
285 {
286 std::vector<unsigned char> newDefaultKey;
287 if (GetKeyFromPool(newDefaultKey, false))
288 {
289 SetDefaultKey(newDefaultKey);
290 SetAddressBookName(CBitcoinAddress(vchDefaultKey), "");
291 }
292 }
293 }
294 // Notify UI
295 vWalletUpdated.push_back(hash);
296
297 // since AddToWallet is called directly for self-originating transactions, check for consumption of own coins
298 WalletUpdateSpent(wtx);
299 }
300
301 // Refresh UI
302 MainFrameRepaint();
303 return true;
304}
305
306// Add a transaction to the wallet, or update it.
307// pblock is optional, but should be provided if the transaction is known to be in a block.
308// If fUpdate is true, existing transactions will be updated.
309bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
310{
311 uint256 hash = tx.GetHash();
312 CRITICAL_BLOCK(cs_wallet)
313 {
314 bool fExisted = mapWallet.count(hash);
315 if (fExisted && !fUpdate) return false;
316 if (fExisted || IsMine(tx) || IsFromMe(tx))
317 {
318 CWalletTx wtx(this,tx);
319 // Get merkle branch if transaction was found in a block
320 if (pblock)
321 wtx.SetMerkleBranch(pblock);
322 return AddToWallet(wtx);
323 }
324 else
325 WalletUpdateSpent(tx);
326 }
327 return false;
328}
329
330bool CWallet::EraseFromWallet(uint256 hash)
331{
332 if (!fFileBacked)
333 return false;
334 CRITICAL_BLOCK(cs_wallet)
335 {
336 if (mapWallet.erase(hash))
337 CWalletDB(strWalletFile).EraseTx(hash);
338 }
339 return true;
340}
341
342
343bool CWallet::IsMine(const CTxIn &txin) const
344{
345 CRITICAL_BLOCK(cs_wallet)
346 {
347 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
348 if (mi != mapWallet.end())
349 {
350 const CWalletTx& prev = (*mi).second;
351 if (txin.prevout.n < prev.vout.size())
352 if (IsMine(prev.vout[txin.prevout.n]))
353 return true;
354 }
355 }
356 return false;
357}
358
359int64 CWallet::GetDebit(const CTxIn &txin) const
360{
361 CRITICAL_BLOCK(cs_wallet)
362 {
363 map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(txin.prevout.hash);
364 if (mi != mapWallet.end())
365 {
366 const CWalletTx& prev = (*mi).second;
367 if (txin.prevout.n < prev.vout.size())
368 if (IsMine(prev.vout[txin.prevout.n]))
369 return prev.vout[txin.prevout.n].nValue;
370 }
371 }
372 return 0;
373}
374
375int64 CWalletTx::GetTxTime() const
376{
377 return nTimeReceived;
378}
379
380int CWalletTx::GetRequestCount() const
381{
382 // Returns -1 if it wasn't being tracked
383 int nRequests = -1;
384 CRITICAL_BLOCK(pwallet->cs_wallet)
385 {
386 if (IsCoinBase())
387 {
388 // Generated block
389 if (hashBlock != 0)
390 {
391 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
392 if (mi != pwallet->mapRequestCount.end())
393 nRequests = (*mi).second;
394 }
395 }
396 else
397 {
398 // Did anyone request this transaction?
399 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(GetHash());
400 if (mi != pwallet->mapRequestCount.end())
401 {
402 nRequests = (*mi).second;
403
404 // How about the block it's in?
405 if (nRequests == 0 && hashBlock != 0)
406 {
407 map<uint256, int>::const_iterator mi = pwallet->mapRequestCount.find(hashBlock);
408 if (mi != pwallet->mapRequestCount.end())
409 nRequests = (*mi).second;
410 else
411 nRequests = 1; // If it's in someone else's block it must have got out
412 }
413 }
414 }
415 }
416 return nRequests;
417}
418
419void CWalletTx::GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, list<pair<CBitcoinAddress, int64> >& listReceived,
420 list<pair<CBitcoinAddress, int64> >& listSent, int64& nFee, string& strSentAccount) const
421{
422 nGeneratedImmature = nGeneratedMature = nFee = 0;
423 listReceived.clear();
424 listSent.clear();
425 strSentAccount = strFromAccount;
426
427 if (IsCoinBase())
428 {
429 if (GetBlocksToMaturity() > 0)
430 nGeneratedImmature = pwallet->GetCredit(*this);
431 else
432 nGeneratedMature = GetCredit();
433 return;
434 }
435
436 // Compute fee:
437 int64 nDebit = GetDebit();
438 if (nDebit > 0) // debit>0 means we signed/sent this transaction
439 {
440 int64 nValueOut = GetValueOut();
441 nFee = nDebit - nValueOut;
442 }
443
444 // Sent/received. Standard client will never generate a send-to-multiple-recipients,
445 // but non-standard clients might (so return a list of address/amount pairs)
446 BOOST_FOREACH(const CTxOut& txout, vout)
447 {
448 CBitcoinAddress address;
449 vector<unsigned char> vchPubKey;
450 if (!ExtractAddress(txout.scriptPubKey, NULL, address))
451 {
452 printf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
453 this->GetHash().ToString().c_str());
454 address = " unknown ";
455 }
456
457 // Don't report 'change' txouts
458 if (nDebit > 0 && pwallet->IsChange(txout))
459 continue;
460
461 if (nDebit > 0)
462 listSent.push_back(make_pair(address, txout.nValue));
463
464 if (pwallet->IsMine(txout))
465 listReceived.push_back(make_pair(address, txout.nValue));
466 }
467
468}
469
470void CWalletTx::GetAccountAmounts(const string& strAccount, int64& nGenerated, int64& nReceived,
471 int64& nSent, int64& nFee) const
472{
473 nGenerated = nReceived = nSent = nFee = 0;
474
475 int64 allGeneratedImmature, allGeneratedMature, allFee;
476 allGeneratedImmature = allGeneratedMature = allFee = 0;
477 string strSentAccount;
478 list<pair<CBitcoinAddress, int64> > listReceived;
479 list<pair<CBitcoinAddress, int64> > listSent;
480 GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
481
482 if (strAccount == "")
483 nGenerated = allGeneratedMature;
484 if (strAccount == strSentAccount)
485 {
486 BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64)& s, listSent)
487 nSent += s.second;
488 nFee = allFee;
489 }
490 CRITICAL_BLOCK(pwallet->cs_wallet)
491 {
492 BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64)& r, listReceived)
493 {
494 if (pwallet->mapAddressBook.count(r.first))
495 {
496 map<CBitcoinAddress, string>::const_iterator mi = pwallet->mapAddressBook.find(r.first);
497 if (mi != pwallet->mapAddressBook.end() && (*mi).second == strAccount)
498 nReceived += r.second;
499 }
500 else if (strAccount.empty())
501 {
502 nReceived += r.second;
503 }
504 }
505 }
506}
507
508void CWalletTx::AddSupportingTransactions(CTxDB& txdb)
509{
510 vtxPrev.clear();
511
512 const int COPY_DEPTH = 3;
513 if (SetMerkleBranch() < COPY_DEPTH)
514 {
515 vector<uint256> vWorkQueue;
516 BOOST_FOREACH(const CTxIn& txin, vin)
517 vWorkQueue.push_back(txin.prevout.hash);
518
519 // This critsect is OK because txdb is already open
520 CRITICAL_BLOCK(pwallet->cs_wallet)
521 {
522 map<uint256, const CMerkleTx*> mapWalletPrev;
523 set<uint256> setAlreadyDone;
524 for (int i = 0; i < vWorkQueue.size(); i++)
525 {
526 uint256 hash = vWorkQueue[i];
527 if (setAlreadyDone.count(hash))
528 continue;
529 setAlreadyDone.insert(hash);
530
531 CMerkleTx tx;
532 map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(hash);
533 if (mi != pwallet->mapWallet.end())
534 {
535 tx = (*mi).second;
536 BOOST_FOREACH(const CMerkleTx& txWalletPrev, (*mi).second.vtxPrev)
537 mapWalletPrev[txWalletPrev.GetHash()] = &txWalletPrev;
538 }
539 else if (mapWalletPrev.count(hash))
540 {
541 tx = *mapWalletPrev[hash];
542 }
543 else if (!fClient && txdb.ReadDiskTx(hash, tx))
544 {
545 ;
546 }
547 else
548 {
549 printf("ERROR: AddSupportingTransactions() : unsupported transaction\n");
550 continue;
551 }
552
553 int nDepth = tx.SetMerkleBranch();
554 vtxPrev.push_back(tx);
555
556 if (nDepth < COPY_DEPTH)
557 BOOST_FOREACH(const CTxIn& txin, tx.vin)
558 vWorkQueue.push_back(txin.prevout.hash);
559 }
560 }
561 }
562
563 reverse(vtxPrev.begin(), vtxPrev.end());
564}
565
566bool CWalletTx::WriteToDisk()
567{
568 return CWalletDB(pwallet->strWalletFile).WriteTx(GetHash(), *this);
569}
570
571// Scan the block chain (starting in pindexStart) for transactions
572// from or to us. If fUpdate is true, found transactions that already
573// exist in the wallet will be updated.
574int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
575{
576 int ret = 0;
577
578 CBlockIndex* pindex = pindexStart;
579 CRITICAL_BLOCK(cs_wallet)
580 {
581 while (pindex)
582 {
583 CBlock block;
584 block.ReadFromDisk(pindex, true);
585 BOOST_FOREACH(CTransaction& tx, block.vtx)
586 {
587 if (AddToWalletIfInvolvingMe(tx, &block, fUpdate))
588 ret++;
589 }
590 pindex = pindex->pnext;
591 }
592 }
593 return ret;
594}
595
596void CWallet::ReacceptWalletTransactions()
597{
598 CTxDB txdb("r");
599 bool fRepeat = true;
600 while (fRepeat) CRITICAL_BLOCK(cs_wallet)
601 {
602 fRepeat = false;
603 vector<CDiskTxPos> vMissingTx;
604 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
605 {
606 CWalletTx& wtx = item.second;
607 if (wtx.IsCoinBase() && wtx.IsSpent(0))
608 continue;
609
610 CTxIndex txindex;
611 bool fUpdated = false;
612 if (txdb.ReadTxIndex(wtx.GetHash(), txindex))
613 {
614 // Update fSpent if a tx got spent somewhere else by a copy of wallet.dat
615 if (txindex.vSpent.size() != wtx.vout.size())
616 {
617 printf("ERROR: ReacceptWalletTransactions() : txindex.vSpent.size() %d != wtx.vout.size() %d\n", txindex.vSpent.size(), wtx.vout.size());
618 continue;
619 }
620 for (int i = 0; i < txindex.vSpent.size(); i++)
621 {
622 if (wtx.IsSpent(i))
623 continue;
624 if (!txindex.vSpent[i].IsNull() && IsMine(wtx.vout[i]))
625 {
626 wtx.MarkSpent(i);
627 fUpdated = true;
628 vMissingTx.push_back(txindex.vSpent[i]);
629 }
630 }
631 if (fUpdated)
632 {
633 printf("ReacceptWalletTransactions found spent coin %sbc %s\n", FormatMoney(wtx.GetCredit()).c_str(), wtx.GetHash().ToString().c_str());
634 wtx.MarkDirty();
635 wtx.WriteToDisk();
636 }
637 }
638 else
639 {
640 // Reaccept any txes of ours that aren't already in a block
641 if (!wtx.IsCoinBase())
642 wtx.AcceptWalletTransaction(txdb, false);
643 }
644 }
645 if (!vMissingTx.empty())
646 {
647 // TODO: optimize this to scan just part of the block chain?
648 if (ScanForWalletTransactions(pindexGenesisBlock))
649 fRepeat = true; // Found missing transactions: re-do Reaccept.
650 }
651 }
652}
653
654void CWalletTx::RelayWalletTransaction(CTxDB& txdb)
655{
656 BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
657 {
658 if (!tx.IsCoinBase())
659 {
660 uint256 hash = tx.GetHash();
661 if (!txdb.ContainsTx(hash))
662 RelayMessage(CInv(MSG_TX, hash), (CTransaction)tx);
663 }
664 }
665 if (!IsCoinBase())
666 {
667 uint256 hash = GetHash();
668 if (!txdb.ContainsTx(hash))
669 {
670 printf("Relaying wtx %s\n", hash.ToString().c_str());
671 RelayMessage(CInv(MSG_TX, hash), (CTransaction)*this);
672 }
673 }
674}
675
676void CWalletTx::RelayWalletTransaction()
677{
678 CTxDB txdb("r");
679 RelayWalletTransaction(txdb);
680}
681
682void CWallet::ResendWalletTransactions()
683{
684 // Do this infrequently and randomly to avoid giving away
685 // that these are our transactions.
686 static int64 nNextTime;
687 if (GetTime() < nNextTime)
688 return;
689 bool fFirst = (nNextTime == 0);
690 nNextTime = GetTime() + GetRand(30 * 60);
691 if (fFirst)
692 return;
693
694 // Only do it if there's been a new block since last time
695 static int64 nLastTime;
696 if (nTimeBestReceived < nLastTime)
697 return;
698 nLastTime = GetTime();
699
700 // Rebroadcast any of our txes that aren't in a block yet
701 printf("ResendWalletTransactions()\n");
702 CTxDB txdb("r");
703 CRITICAL_BLOCK(cs_wallet)
704 {
705 // Sort them in chronological order
706 multimap<unsigned int, CWalletTx*> mapSorted;
707 BOOST_FOREACH(PAIRTYPE(const uint256, CWalletTx)& item, mapWallet)
708 {
709 CWalletTx& wtx = item.second;
710 // Don't rebroadcast until it's had plenty of time that
711 // it should have gotten in already by now.
712 if (nTimeBestReceived - (int64)wtx.nTimeReceived > 5 * 60)
713 mapSorted.insert(make_pair(wtx.nTimeReceived, &wtx));
714 }
715 BOOST_FOREACH(PAIRTYPE(const unsigned int, CWalletTx*)& item, mapSorted)
716 {
717 CWalletTx& wtx = *item.second;
718 wtx.RelayWalletTransaction(txdb);
719 }
720 }
721}
722
723
724
725
726
727
728//////////////////////////////////////////////////////////////////////////////
729//
730// Actions
731//
732
733
734int64 CWallet::GetBalance() const
735{
736 int64 nTotal = 0;
737 CRITICAL_BLOCK(cs_wallet)
738 {
739 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
740 {
741 const CWalletTx* pcoin = &(*it).second;
742 if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
743 continue;
744 nTotal += pcoin->GetAvailableCredit();
745 }
746 }
747
748 return nTotal;
749}
750
751int64 CWallet::GetUnconfirmedBalance() const
752{
753 int64 nTotal = 0;
754 CRITICAL_BLOCK(cs_wallet)
755 {
756 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
757 {
758 const CWalletTx* pcoin = &(*it).second;
759 if (pcoin->IsFinal() && pcoin->IsConfirmed())
760 continue;
761 nTotal += pcoin->GetAvailableCredit();
762 }
763 }
764 return nTotal;
765}
766
767bool CWallet::SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
768{
769 setCoinsRet.clear();
770 nValueRet = 0;
771
772 // List of values less than target
773 pair<int64, pair<const CWalletTx*,unsigned int> > coinLowestLarger;
774 coinLowestLarger.first = INT64_MAX;
775 coinLowestLarger.second.first = NULL;
776 vector<pair<int64, pair<const CWalletTx*,unsigned int> > > vValue;
777 int64 nTotalLower = 0;
778
779 CRITICAL_BLOCK(cs_wallet)
780 {
781 vector<const CWalletTx*> vCoins;
782 vCoins.reserve(mapWallet.size());
783 for (map<uint256, CWalletTx>::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
784 vCoins.push_back(&(*it).second);
785 random_shuffle(vCoins.begin(), vCoins.end(), GetRandInt);
786
787 BOOST_FOREACH(const CWalletTx* pcoin, vCoins)
788 {
789 if (!pcoin->IsFinal() || !pcoin->IsConfirmed())
790 continue;
791
792 if (pcoin->IsCoinBase() && pcoin->GetBlocksToMaturity() > 0)
793 continue;
794
795 int nDepth = pcoin->GetDepthInMainChain();
796 if (nDepth < (pcoin->IsFromMe() ? nConfMine : nConfTheirs))
797 continue;
798
799 for (int i = 0; i < pcoin->vout.size(); i++)
800 {
801 if (pcoin->IsSpent(i) || !IsMine(pcoin->vout[i]))
802 continue;
803
804 int64 n = pcoin->vout[i].nValue;
805
806 if (n <= 0)
807 continue;
808
809 pair<int64,pair<const CWalletTx*,unsigned int> > coin = make_pair(n,make_pair(pcoin,i));
810
811 if (n == nTargetValue)
812 {
813 setCoinsRet.insert(coin.second);
814 nValueRet += coin.first;
815 return true;
816 }
817 else if (n < nTargetValue + CENT)
818 {
819 vValue.push_back(coin);
820 nTotalLower += n;
821 }
822 else if (n < coinLowestLarger.first)
823 {
824 coinLowestLarger = coin;
825 }
826 }
827 }
828 }
829
830 if (nTotalLower == nTargetValue || nTotalLower == nTargetValue + CENT)
831 {
832 for (int i = 0; i < vValue.size(); ++i)
833 {
834 setCoinsRet.insert(vValue[i].second);
835 nValueRet += vValue[i].first;
836 }
837 return true;
838 }
839
840 if (nTotalLower < nTargetValue + (coinLowestLarger.second.first ? CENT : 0))
841 {
842 if (coinLowestLarger.second.first == NULL)
843 return false;
844 setCoinsRet.insert(coinLowestLarger.second);
845 nValueRet += coinLowestLarger.first;
846 return true;
847 }
848
849 if (nTotalLower >= nTargetValue + CENT)
850 nTargetValue += CENT;
851
852 // Solve subset sum by stochastic approximation
853 sort(vValue.rbegin(), vValue.rend());
854 vector<char> vfIncluded;
855 vector<char> vfBest(vValue.size(), true);
856 int64 nBest = nTotalLower;
857
858 for (int nRep = 0; nRep < 1000 && nBest != nTargetValue; nRep++)
859 {
860 vfIncluded.assign(vValue.size(), false);
861 int64 nTotal = 0;
862 bool fReachedTarget = false;
863 for (int nPass = 0; nPass < 2 && !fReachedTarget; nPass++)
864 {
865 for (int i = 0; i < vValue.size(); i++)
866 {
867 if (nPass == 0 ? rand() % 2 : !vfIncluded[i])
868 {
869 nTotal += vValue[i].first;
870 vfIncluded[i] = true;
871 if (nTotal >= nTargetValue)
872 {
873 fReachedTarget = true;
874 if (nTotal < nBest)
875 {
876 nBest = nTotal;
877 vfBest = vfIncluded;
878 }
879 nTotal -= vValue[i].first;
880 vfIncluded[i] = false;
881 }
882 }
883 }
884 }
885 }
886
887 // If the next larger is still closer, return it
888 if (coinLowestLarger.second.first && coinLowestLarger.first - nTargetValue <= nBest - nTargetValue)
889 {
890 setCoinsRet.insert(coinLowestLarger.second);
891 nValueRet += coinLowestLarger.first;
892 }
893 else {
894 for (int i = 0; i < vValue.size(); i++)
895 if (vfBest[i])
896 {
897 setCoinsRet.insert(vValue[i].second);
898 nValueRet += vValue[i].first;
899 }
900
901 //// debug print
902 printf("SelectCoins() best subset: ");
903 for (int i = 0; i < vValue.size(); i++)
904 if (vfBest[i])
905 printf("%s ", FormatMoney(vValue[i].first).c_str());
906 printf("total %s\n", FormatMoney(nBest).c_str());
907 }
908
909 return true;
910}
911
912bool CWallet::SelectCoins(int64 nTargetValue, set<pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const
913{
914 return (SelectCoinsMinConf(nTargetValue, 1, 6, setCoinsRet, nValueRet) ||
915 SelectCoinsMinConf(nTargetValue, 1, 1, setCoinsRet, nValueRet) ||
916 SelectCoinsMinConf(nTargetValue, 0, 1, setCoinsRet, nValueRet));
917}
918
919
920
921
922bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
923{
924 int64 nValue = 0;
925 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
926 {
927 if (nValue < 0)
928 return false;
929 nValue += s.second;
930 }
931 if (vecSend.empty() || nValue < 0)
932 return false;
933
934 wtxNew.pwallet = this;
935
936 CRITICAL_BLOCK(cs_main)
937 CRITICAL_BLOCK(cs_wallet)
938 {
939 // txdb must be opened before the mapWallet lock
940 CTxDB txdb("r");
941 {
942 nFeeRet = nTransactionFee;
943 loop
944 {
945 wtxNew.vin.clear();
946 wtxNew.vout.clear();
947 wtxNew.fFromMe = true;
948
949 int64 nTotalValue = nValue + nFeeRet;
950 double dPriority = 0;
951 // vouts to the payees
952 BOOST_FOREACH (const PAIRTYPE(CScript, int64)& s, vecSend)
953 wtxNew.vout.push_back(CTxOut(s.second, s.first));
954
955 // Choose coins to use
956 set<pair<const CWalletTx*,unsigned int> > setCoins;
957 int64 nValueIn = 0;
958 if (!SelectCoins(nTotalValue, setCoins, nValueIn))
959 return false;
960 BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
961 {
962 int64 nCredit = pcoin.first->vout[pcoin.second].nValue;
963 dPriority += (double)nCredit * pcoin.first->GetDepthInMainChain();
964 }
965
966 int64 nChange = nValueIn - nValue - nFeeRet;
967 // if sub-cent change is required, the fee must be raised to at least MIN_TX_FEE
968 // or until nChange becomes zero
969 if (nFeeRet < MIN_TX_FEE && nChange > 0 && nChange < CENT)
970 {
971 int64 nMoveToFee = min(nChange, MIN_TX_FEE - nFeeRet);
972 nChange -= nMoveToFee;
973 nFeeRet += nMoveToFee;
974 }
975
976 if (nChange > 0)
977 {
978 // Note: We use a new key here to keep it from being obvious which side is the change.
979 // The drawback is that by not reusing a previous key, the change may be lost if a
980 // backup is restored, if the backup doesn't have the new private key for the change.
981 // If we reused the old key, it would be possible to add code to look for and
982 // rediscover unknown transactions that were written with keys of ours to recover
983 // post-backup change.
984
985 // Reserve a new key pair from key pool
986 vector<unsigned char> vchPubKey = reservekey.GetReservedKey();
987 // assert(mapKeys.count(vchPubKey));
988
989 // Fill a vout to ourself, using same address type as the payment
990 CScript scriptChange;
991 if (vecSend[0].first.GetBitcoinAddress().IsValid())
992 scriptChange.SetBitcoinAddress(vchPubKey);
993 else
994 scriptChange << vchPubKey << OP_CHECKSIG;
995
996 // Insert change txn at random position:
997 vector<CTxOut>::iterator position = wtxNew.vout.begin()+GetRandInt(wtxNew.vout.size());
998 wtxNew.vout.insert(position, CTxOut(nChange, scriptChange));
999 }
1000 else
1001 reservekey.ReturnKey();
1002
1003 // Fill vin
1004 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
1005 wtxNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second));
1006
1007 // Sign
1008 int nIn = 0;
1009 BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
1010 if (!SignSignature(*this, *coin.first, wtxNew, nIn++))
1011 return false;
1012
1013 // Limit size
1014 unsigned int nBytes = ::GetSerializeSize(*(CTransaction*)&wtxNew, SER_NETWORK);
1015 if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
1016 return false;
1017 dPriority /= nBytes;
1018
1019 // Check that enough fee is included
1020 int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);
1021 bool fAllowFree = CTransaction::AllowFree(dPriority);
1022 int64 nMinFee = wtxNew.GetMinFee(1, fAllowFree);
1023 if (nFeeRet < max(nPayFee, nMinFee))
1024 {
1025 nFeeRet = max(nPayFee, nMinFee);
1026 continue;
1027 }
1028
1029 // Fill vtxPrev by copying from previous transactions vtxPrev
1030 wtxNew.AddSupportingTransactions(txdb);
1031 wtxNew.fTimeReceivedIsTxTime = true;
1032
1033 break;
1034 }
1035 }
1036 }
1037 return true;
1038}
1039
1040bool CWallet::CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet)
1041{
1042 vector< pair<CScript, int64> > vecSend;
1043 vecSend.push_back(make_pair(scriptPubKey, nValue));
1044 return CreateTransaction(vecSend, wtxNew, reservekey, nFeeRet);
1045}
1046
1047// Call after CreateTransaction unless you want to abort
1048bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
1049{
1050 CRITICAL_BLOCK(cs_main)
1051 CRITICAL_BLOCK(cs_wallet)
1052 {
1053 printf("CommitTransaction:\n%s", wtxNew.ToString().c_str());
1054 {
1055 // This is only to keep the database open to defeat the auto-flush for the
1056 // duration of this scope. This is the only place where this optimization
1057 // maybe makes sense; please don't do it anywhere else.
1058 CWalletDB* pwalletdb = fFileBacked ? new CWalletDB(strWalletFile,"r") : NULL;
1059
1060 // Take key pair from key pool so it won't be used again
1061 reservekey.KeepKey();
1062
1063 // Add tx to wallet, because if it has change it's also ours,
1064 // otherwise just for transaction history.
1065 AddToWallet(wtxNew);
1066
1067 // Mark old coins as spent
1068 set<CWalletTx*> setCoins;
1069 BOOST_FOREACH(const CTxIn& txin, wtxNew.vin)
1070 {
1071 CWalletTx &coin = mapWallet[txin.prevout.hash];
1072 coin.pwallet = this;
1073 coin.MarkSpent(txin.prevout.n);
1074 coin.WriteToDisk();
1075 vWalletUpdated.push_back(coin.GetHash());
1076 }
1077
1078 if (fFileBacked)
1079 delete pwalletdb;
1080 }
1081
1082 // Track how many getdata requests our transaction gets
1083 mapRequestCount[wtxNew.GetHash()] = 0;
1084
1085 // Broadcast
1086 if (!wtxNew.AcceptToMemoryPool())
1087 {
1088 // This must not fail. The transaction has already been signed and recorded.
1089 printf("CommitTransaction() : Error: Transaction not valid");
1090 return false;
1091 }
1092 wtxNew.RelayWalletTransaction();
1093 }
1094 MainFrameRepaint();
1095 return true;
1096}
1097
1098
1099
1100
1101string CWallet::SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
1102{
1103 CReserveKey reservekey(this);
1104 int64 nFeeRequired;
1105
1106 if (IsLocked())
1107 {
1108 string strError = _("Error: Wallet locked, unable to create transaction ");
1109 printf("SendMoney() : %s", strError.c_str());
1110 return strError;
1111 }
1112 if (!CreateTransaction(scriptPubKey, nValue, wtxNew, reservekey, nFeeRequired))
1113 {
1114 string strError;
1115 if (nValue + nFeeRequired > GetBalance())
1116 strError = strprintf(_("Error: This transaction requires a transaction fee of at least %s because of its amount, complexity, or use of recently received funds "), FormatMoney(nFeeRequired).c_str());
1117 else
1118 strError = _("Error: Transaction creation failed ");
1119 printf("SendMoney() : %s", strError.c_str());
1120 return strError;
1121 }
1122
1123 if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
1124 return "ABORTED";
1125
1126 if (!CommitTransaction(wtxNew, reservekey))
1127 return _("Error: The transaction was rejected. This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here.");
1128
1129 MainFrameRepaint();
1130 return "";
1131}
1132
1133
1134
1135string CWallet::SendMoneyToBitcoinAddress(const CBitcoinAddress& address, int64 nValue, CWalletTx& wtxNew, bool fAskFee)
1136{
1137 // Check amount
1138 if (nValue <= 0)
1139 return _("Invalid amount");
1140 if (nValue + nTransactionFee > GetBalance())
1141 return _("Insufficient funds");
1142
1143 // Parse bitcoin address
1144 CScript scriptPubKey;
1145 scriptPubKey.SetBitcoinAddress(address);
1146
1147 return SendMoney(scriptPubKey, nValue, wtxNew, fAskFee);
1148}
1149
1150
1151
1152
1153int CWallet::LoadWallet(bool& fFirstRunRet)
1154{
1155 if (!fFileBacked)
1156 return false;
1157 fFirstRunRet = false;
1158 int nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this);
1159 if (nLoadWalletRet == DB_NEED_REWRITE)
1160 {
1161 if (CDB::Rewrite(strWalletFile, "\x04pool"))
1162 {
1163 setKeyPool.clear();
1164 // Note: can't top-up keypool here, because wallet is locked.
1165 // User will be prompted to unlock wallet the next operation
1166 // the requires a new key.
1167 }
1168 nLoadWalletRet = DB_NEED_REWRITE;
1169 }
1170
1171 if (nLoadWalletRet != DB_LOAD_OK)
1172 return nLoadWalletRet;
1173 fFirstRunRet = vchDefaultKey.empty();
1174
1175 if (!HaveKey(Hash160(vchDefaultKey)))
1176 {
1177 // Create new keyUser and set as default key
1178 RandAddSeedPerfmon();
1179
1180 std::vector<unsigned char> newDefaultKey;
1181 if (!GetKeyFromPool(newDefaultKey, false))
1182 return DB_LOAD_FAIL;
1183 SetDefaultKey(newDefaultKey);
1184 if (!SetAddressBookName(CBitcoinAddress(vchDefaultKey), ""))
1185 return DB_LOAD_FAIL;
1186 }
1187
1188 CreateThread(ThreadFlushWalletDB, &strWalletFile);
1189 return DB_LOAD_OK;
1190}
1191
1192
1193bool CWallet::SetAddressBookName(const CBitcoinAddress& address, const string& strName)
1194{
1195 mapAddressBook[address] = strName;
1196 if (!fFileBacked)
1197 return false;
1198 return CWalletDB(strWalletFile).WriteName(address.ToString(), strName);
1199}
1200
1201bool CWallet::DelAddressBookName(const CBitcoinAddress& address)
1202{
1203 mapAddressBook.erase(address);
1204 if (!fFileBacked)
1205 return false;
1206 return CWalletDB(strWalletFile).EraseName(address.ToString());
1207}
1208
1209
1210void CWallet::PrintWallet(const CBlock& block)
1211{
1212 CRITICAL_BLOCK(cs_wallet)
1213 {
1214 if (mapWallet.count(block.vtx[0].GetHash()))
1215 {
1216 CWalletTx& wtx = mapWallet[block.vtx[0].GetHash()];
1217 printf(" mine: %d %d %d", wtx.GetDepthInMainChain(), wtx.GetBlocksToMaturity(), wtx.GetCredit());
1218 }
1219 }
1220 printf("\n");
1221}
1222
1223bool CWallet::GetTransaction(const uint256 &hashTx, CWalletTx& wtx)
1224{
1225 CRITICAL_BLOCK(cs_wallet)
1226 {
1227 map<uint256, CWalletTx>::iterator mi = mapWallet.find(hashTx);
1228 if (mi != mapWallet.end())
1229 {
1230 wtx = (*mi).second;
1231 return true;
1232 }
1233 }
1234 return false;
1235}
1236
1237bool CWallet::SetDefaultKey(const std::vector<unsigned char> &vchPubKey)
1238{
1239 if (fFileBacked)
1240 {
1241 if (!CWalletDB(strWalletFile).WriteDefaultKey(vchPubKey))
1242 return false;
1243 }
1244 vchDefaultKey = vchPubKey;
1245 return true;
1246}
1247
1248bool GetWalletFile(CWallet* pwallet, string &strWalletFileOut)
1249{
1250 if (!pwallet->fFileBacked)
1251 return false;
1252 strWalletFileOut = pwallet->strWalletFile;
1253 return true;
1254}
1255
1256//
1257// Mark old keypool keys as used,
1258// and generate all new keys
1259//
1260bool CWallet::NewKeyPool()
1261{
1262 CRITICAL_BLOCK(cs_wallet)
1263 {
1264 CWalletDB walletdb(strWalletFile);
1265 BOOST_FOREACH(int64 nIndex, setKeyPool)
1266 walletdb.ErasePool(nIndex);
1267 setKeyPool.clear();
1268
1269 if (IsLocked())
1270 return false;
1271
1272 int64 nKeys = max(GetArg("-keypool", 100), (int64)0);
1273 for (int i = 0; i < nKeys; i++)
1274 {
1275 int64 nIndex = i+1;
1276 walletdb.WritePool(nIndex, CKeyPool(GenerateNewKey()));
1277 setKeyPool.insert(nIndex);
1278 }
1279 printf("CWallet::NewKeyPool wrote %"PRI64d" new keys\n", nKeys);
1280 }
1281 return true;
1282}
1283
1284bool CWallet::TopUpKeyPool()
1285{
1286 CRITICAL_BLOCK(cs_wallet)
1287 {
1288 if (IsLocked())
1289 return false;
1290
1291 CWalletDB walletdb(strWalletFile);
1292
1293 // Top up key pool
1294 int64 nTargetSize = max(GetArg("-keypool", 100), (int64)0);
1295 while (setKeyPool.size() < nTargetSize+1)
1296 {
1297 int64 nEnd = 1;
1298 if (!setKeyPool.empty())
1299 nEnd = *(--setKeyPool.end()) + 1;
1300 if (!walletdb.WritePool(nEnd, CKeyPool(GenerateNewKey())))
1301 throw runtime_error("TopUpKeyPool() : writing generated key failed");
1302 setKeyPool.insert(nEnd);
1303 printf("keypool added key %"PRI64d", size=%d\n", nEnd, setKeyPool.size());
1304 }
1305 }
1306 return true;
1307}
1308
1309void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
1310{
1311 nIndex = -1;
1312 keypool.vchPubKey.clear();
1313 CRITICAL_BLOCK(cs_wallet)
1314 {
1315 if (!IsLocked())
1316 TopUpKeyPool();
1317
1318 // Get the oldest key
1319 if(setKeyPool.empty())
1320 return;
1321
1322 CWalletDB walletdb(strWalletFile);
1323
1324 nIndex = *(setKeyPool.begin());
1325 setKeyPool.erase(setKeyPool.begin());
1326 if (!walletdb.ReadPool(nIndex, keypool))
1327 throw runtime_error("ReserveKeyFromKeyPool() : read failed");
1328 if (!HaveKey(Hash160(keypool.vchPubKey)))
1329 throw runtime_error("ReserveKeyFromKeyPool() : unknown key in key pool");
1330 assert(!keypool.vchPubKey.empty());
1331 printf("keypool reserve %"PRI64d"\n", nIndex);
1332 }
1333}
1334
1335void CWallet::KeepKey(int64 nIndex)
1336{
1337 // Remove from key pool
1338 if (fFileBacked)
1339 {
1340 CWalletDB walletdb(strWalletFile);
1341 walletdb.ErasePool(nIndex);
1342 }
1343 printf("keypool keep %"PRI64d"\n", nIndex);
1344}
1345
1346void CWallet::ReturnKey(int64 nIndex)
1347{
1348 // Return to key pool
1349 CRITICAL_BLOCK(cs_wallet)
1350 setKeyPool.insert(nIndex);
1351 printf("keypool return %"PRI64d"\n", nIndex);
1352}
1353
1354bool CWallet::GetKeyFromPool(vector<unsigned char>& result, bool fAllowReuse)
1355{
1356 int64 nIndex = 0;
1357 CKeyPool keypool;
1358 CRITICAL_BLOCK(cs_wallet)
1359 {
1360 ReserveKeyFromKeyPool(nIndex, keypool);
1361 if (nIndex == -1)
1362 {
1363 if (fAllowReuse && !vchDefaultKey.empty())
1364 {
1365 result = vchDefaultKey;
1366 return true;
1367 }
1368 if (IsLocked()) return false;
1369 result = GenerateNewKey();
1370 return true;
1371 }
1372 KeepKey(nIndex);
1373 result = keypool.vchPubKey;
1374 }
1375 return true;
1376}
1377
1378int64 CWallet::GetOldestKeyPoolTime()
1379{
1380 int64 nIndex = 0;
1381 CKeyPool keypool;
1382 ReserveKeyFromKeyPool(nIndex, keypool);
1383 if (nIndex == -1)
1384 return GetTime();
1385 ReturnKey(nIndex);
1386 return keypool.nTime;
1387}
1388
1389vector<unsigned char> CReserveKey::GetReservedKey()
1390{
1391 if (nIndex == -1)
1392 {
1393 CKeyPool keypool;
1394 pwallet->ReserveKeyFromKeyPool(nIndex, keypool);
1395 if (nIndex != -1)
1396 vchPubKey = keypool.vchPubKey;
1397 else
1398 {
1399 printf("CReserveKey::GetReservedKey(): Warning: using default key instead of a new key, top up your keypool.");
1400 vchPubKey = pwallet->vchDefaultKey;
1401 }
1402 }
1403 assert(!vchPubKey.empty());
1404 return vchPubKey;
1405}
1406
1407void CReserveKey::KeepKey()
1408{
1409 if (nIndex != -1)
1410 pwallet->KeepKey(nIndex);
1411 nIndex = -1;
1412 vchPubKey.clear();
1413}
1414
1415void CReserveKey::ReturnKey()
1416{
1417 if (nIndex != -1)
1418 pwallet->ReturnKey(nIndex);
1419 nIndex = -1;
1420 vchPubKey.clear();
1421}
1422