[VerusCoin.git] / src / walletdb.cpp

// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include "walletdb.h"
#include "wallet.h"
#include <boost/filesystem.hpp>

using namespace std;
using namespace boost;


static uint64 nAccountingEntryNumber = 0;

extern CCriticalSection cs_db;
extern map<string, int> mapFileUseCount;
extern void CloseDb(const string& strFile);

//
// CWalletDB
//

bool CWalletDB::WriteName(const string& strAddress, const string& strName)
{
    nWalletDBUpdated++;
    return Write(make_pair(string("name"), strAddress), strName);
}

bool CWalletDB::EraseName(const string& strAddress)
{
    // This should only be used for sending addresses, never for receiving addresses,
    // receiving addresses must always have an address book entry if they're not change return.
    nWalletDBUpdated++;
    return Erase(make_pair(string("name"), strAddress));
}

bool CWalletDB::ReadAccount(const string& strAccount, CAccount& account)
{
    account.SetNull();
    return Read(make_pair(string("acc"), strAccount), account);
}

bool CWalletDB::WriteAccount(const string& strAccount, const CAccount& account)
{
    return Write(make_pair(string("acc"), strAccount), account);
}

bool CWalletDB::WriteAccountingEntry(const CAccountingEntry& acentry)
{
    return Write(boost::make_tuple(string("acentry"), acentry.strAccount, ++nAccountingEntryNumber), acentry);
}

int64 CWalletDB::GetAccountCreditDebit(const string& strAccount)
{
    list<CAccountingEntry> entries;
    ListAccountCreditDebit(strAccount, entries);

    int64 nCreditDebit = 0;
    BOOST_FOREACH (const CAccountingEntry& entry, entries)
        nCreditDebit += entry.nCreditDebit;

    return nCreditDebit;
}

void CWalletDB::ListAccountCreditDebit(const string& strAccount, list<CAccountingEntry>& entries)
{
    bool fAllAccounts = (strAccount == "*");

    Dbc* pcursor = GetCursor();
    if (!pcursor)
        throw runtime_error("CWalletDB::ListAccountCreditDebit() : cannot create DB cursor");
    unsigned int fFlags = DB_SET_RANGE;
    loop
    {
        // Read next record
        CDataStream ssKey(SER_DISK, CLIENT_VERSION);
        if (fFlags == DB_SET_RANGE)
            ssKey << boost::make_tuple(string("acentry"), (fAllAccounts? string("") : strAccount), uint64(0));
        CDataStream ssValue(SER_DISK, CLIENT_VERSION);
        int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
        fFlags = DB_NEXT;
        if (ret == DB_NOTFOUND)
            break;
        else if (ret != 0)
        {
            pcursor->close();
            throw runtime_error("CWalletDB::ListAccountCreditDebit() : error scanning DB");
        }

        // Unserialize
        string strType;
        ssKey >> strType;
        if (strType != "acentry")
            break;
        CAccountingEntry acentry;
        ssKey >> acentry.strAccount;
        if (!fAllAccounts && acentry.strAccount != strAccount)
            break;

        ssValue >> acentry;
        entries.push_back(acentry);
    }

    pcursor->close();
}


int CWalletDB::LoadWallet(CWallet* pwallet)
{
    pwallet->vchDefaultKey.clear();
    int nFileVersion = 0;
    vector<uint256> vWalletUpgrade;
    bool fIsEncrypted = false;

    //// todo: shouldn't we catch exceptions and try to recover and continue?
    {
        LOCK(pwallet->cs_wallet);
        int nMinVersion = 0;
        if (Read((string)"minversion", nMinVersion))
        {
            if (nMinVersion > CLIENT_VERSION)
                return DB_TOO_NEW;
            pwallet->LoadMinVersion(nMinVersion);
        }

        // Get cursor
        Dbc* pcursor = GetCursor();
        if (!pcursor)
        {
            printf("Error getting wallet database cursor\n");
            return DB_CORRUPT;
        }

        loop
        {
            // Read next record
            CDataStream ssKey(SER_DISK, CLIENT_VERSION);
            CDataStream ssValue(SER_DISK, CLIENT_VERSION);
            int ret = ReadAtCursor(pcursor, ssKey, ssValue);
            if (ret == DB_NOTFOUND)
                break;
            else if (ret != 0)
            {
                printf("Error reading next record from wallet database\n");
                return DB_CORRUPT;
            }

            // Unserialize
            // Taking advantage of the fact that pair serialization
            // is just the two items serialized one after the other
            string strType;
            ssKey >> strType;
            if (strType == "name")
            {
                string strAddress;
                ssKey >> strAddress;
                ssValue >> pwallet->mapAddressBook[strAddress];
            }
            else if (strType == "tx")
            {
                uint256 hash;
                ssKey >> hash;
                CWalletTx& wtx = pwallet->mapWallet[hash];
                ssValue >> wtx;
                wtx.BindWallet(pwallet);

                if (wtx.GetHash() != hash)
                    printf("Error in wallet.dat, hash mismatch\n");

                // Undo serialize changes in 31600
                if (31404 <= wtx.fTimeReceivedIsTxTime && wtx.fTimeReceivedIsTxTime <= 31703)
                {
                    if (!ssValue.empty())
                    {
                        char fTmp;
                        char fUnused;
                        ssValue >> fTmp >> fUnused >> wtx.strFromAccount;
                        printf("LoadWallet() upgrading tx ver=%d %d '%s' %s\n", wtx.fTimeReceivedIsTxTime, fTmp, wtx.strFromAccount.c_str(), hash.ToString().c_str());
                        wtx.fTimeReceivedIsTxTime = fTmp;
                    }
                    else
                    {
                        printf("LoadWallet() repairing tx ver=%d %s\n", wtx.fTimeReceivedIsTxTime, hash.ToString().c_str());
                        wtx.fTimeReceivedIsTxTime = 0;
                    }
                    vWalletUpgrade.push_back(hash);
                }

                //// debug print
                //printf("LoadWallet  %s\n", wtx.GetHash().ToString().c_str());
                //printf(" %12"PRI64d"  %s  %s  %s\n",
                //    wtx.vout[0].nValue,
                //    DateTimeStrFormat("%x %H:%M:%S", wtx.GetBlockTime()).c_str(),
                //    wtx.hashBlock.ToString().substr(0,20).c_str(),
                //    wtx.mapValue["message"].c_str());
            }
            else if (strType == "acentry")
            {
                string strAccount;
                ssKey >> strAccount;
                uint64 nNumber;
                ssKey >> nNumber;
                if (nNumber > nAccountingEntryNumber)
                    nAccountingEntryNumber = nNumber;
            }
            else if (strType == "key" || strType == "wkey")
            {
                vector<unsigned char> vchPubKey;
                ssKey >> vchPubKey;
                CKey key;
                if (strType == "key")
                {
                    CPrivKey pkey;
                    ssValue >> pkey;
                    key.SetPubKey(vchPubKey);
                    key.SetPrivKey(pkey);
                    if (key.GetPubKey() != vchPubKey)
                    {
                        printf("Error reading wallet database: CPrivKey pubkey inconsistency\n");
                        return DB_CORRUPT;
                    }
                    if (!key.IsValid())
                    {
                        printf("Error reading wallet database: invalid CPrivKey\n");
                        return DB_CORRUPT;
                    }
                }
                else
                {
                    CWalletKey wkey;
                    ssValue >> wkey;
                    key.SetPubKey(vchPubKey);
                    key.SetPrivKey(wkey.vchPrivKey);
                    if (key.GetPubKey() != vchPubKey)
                    {
                        printf("Error reading wallet database: CWalletKey pubkey inconsistency\n");
                        return DB_CORRUPT;
                    }
                    if (!key.IsValid())
                    {
                        printf("Error reading wallet database: invalid CWalletKey\n");
                        return DB_CORRUPT;
                    }
                }
                if (!pwallet->LoadKey(key))
                {
                    printf("Error reading wallet database: LoadKey failed\n");
                    return DB_CORRUPT;
                }
            }
            else if (strType == "mkey")
            {
                unsigned int nID;
                ssKey >> nID;
                CMasterKey kMasterKey;
                ssValue >> kMasterKey;
                if(pwallet->mapMasterKeys.count(nID) != 0)
                {
                    printf("Error reading wallet database: duplicate CMasterKey id %u\n", nID);
                    return DB_CORRUPT;
                }
                pwallet->mapMasterKeys[nID] = kMasterKey;
                if (pwallet->nMasterKeyMaxID < nID)
                    pwallet->nMasterKeyMaxID = nID;
            }
            else if (strType == "ckey")
            {
                vector<unsigned char> vchPubKey;
                ssKey >> vchPubKey;
                vector<unsigned char> vchPrivKey;
                ssValue >> vchPrivKey;
                if (!pwallet->LoadCryptedKey(vchPubKey, vchPrivKey))
                {
                    printf("Error reading wallet database: LoadCryptedKey failed\n");
                    return DB_CORRUPT;
                }
                fIsEncrypted = true;
            }
            else if (strType == "defaultkey")
            {
                ssValue >> pwallet->vchDefaultKey;
            }
            else if (strType == "pool")
            {
                int64 nIndex;
                ssKey >> nIndex;
                pwallet->setKeyPool.insert(nIndex);
            }
            else if (strType == "version")
            {
                ssValue >> nFileVersion;
                if (nFileVersion == 10300)
                    nFileVersion = 300;
            }
            else if (strType == "cscript")
            {
                uint160 hash;
                ssKey >> hash;
                CScript script;
                ssValue >> script;
                if (!pwallet->LoadCScript(script))
                {
                    printf("Error reading wallet database: LoadCScript failed\n");
                    return DB_CORRUPT;
                }
            }
        }
        pcursor->close();
    }

    BOOST_FOREACH(uint256 hash, vWalletUpgrade)
        WriteTx(hash, pwallet->mapWallet[hash]);

    printf("nFileVersion = %d\n", nFileVersion);


    // Rewrite encrypted wallets of versions 0.4.0 and 0.5.0rc:
    if (fIsEncrypted && (nFileVersion == 40000 || nFileVersion == 50000))
        return DB_NEED_REWRITE;

    if (nFileVersion < CLIENT_VERSION) // Update
        WriteVersion(CLIENT_VERSION);

    return DB_LOAD_OK;
}

void ThreadFlushWalletDB(void* parg)
{
    const string& strFile = ((const string*)parg)[0];
    static bool fOneThread;
    if (fOneThread)
        return;
    fOneThread = true;
    if (!GetBoolArg("-flushwallet", true))
        return;

    unsigned int nLastSeen = nWalletDBUpdated;
    unsigned int nLastFlushed = nWalletDBUpdated;
    int64 nLastWalletUpdate = GetTime();
    while (!fShutdown)
    {
        Sleep(500);

        if (nLastSeen != nWalletDBUpdated)
        {
            nLastSeen = nWalletDBUpdated;
            nLastWalletUpdate = GetTime();
        }

        if (nLastFlushed != nWalletDBUpdated && GetTime() - nLastWalletUpdate >= 2)
        {
            TRY_LOCK(cs_db,lockDb);
            if (lockDb)
            {
                // Don't do this if any databases are in use
                int nRefCount = 0;
                map<string, int>::iterator mi = mapFileUseCount.begin();
                while (mi != mapFileUseCount.end())
                {
                    nRefCount += (*mi).second;
                    mi++;
                }

                if (nRefCount == 0 && !fShutdown)
                {
                    map<string, int>::iterator mi = mapFileUseCount.find(strFile);
                    if (mi != mapFileUseCount.end())
                    {
                        printf("Flushing wallet.dat\n");
                        nLastFlushed = nWalletDBUpdated;
                        int64 nStart = GetTimeMillis();

                        // Flush wallet.dat so it's self contained
                        CloseDb(strFile);
                        dbenv.txn_checkpoint(0, 0, 0);
                        dbenv.lsn_reset(strFile.c_str(), 0);

                        mapFileUseCount.erase(mi++);
                        printf("Flushed wallet.dat %"PRI64d"ms\n", GetTimeMillis() - nStart);
                    }
                }
            }
        }
    }
}

bool BackupWallet(const CWallet& wallet, const string& strDest)
{
    if (!wallet.fFileBacked)
        return false;
    while (!fShutdown)
    {
        {
            LOCK(cs_db);
            if (!mapFileUseCount.count(wallet.strWalletFile) || mapFileUseCount[wallet.strWalletFile] == 0)
            {
                // Flush log data to the dat file
                CloseDb(wallet.strWalletFile);
                dbenv.txn_checkpoint(0, 0, 0);
                dbenv.lsn_reset(wallet.strWalletFile.c_str(), 0);
                mapFileUseCount.erase(wallet.strWalletFile);

                // Copy wallet.dat
                filesystem::path pathSrc = GetDataDir() / wallet.strWalletFile;
                filesystem::path pathDest(strDest);
                if (filesystem::is_directory(pathDest))
                    pathDest /= wallet.strWalletFile;

                try {
#if BOOST_VERSION >= 104000
                    filesystem::copy_file(pathSrc, pathDest, filesystem::copy_option::overwrite_if_exists);
#else
                    filesystem::copy_file(pathSrc, pathDest);
#endif
                    printf("copied wallet.dat to %s\n", pathDest.string().c_str());
                    return true;
                } catch(const filesystem::filesystem_error &e) {
                    printf("error copying wallet.dat to %s - %s\n", pathDest.string().c_str(), e.what());
                    return false;
                }
            }
        }
        Sleep(100);
    }
    return false;
}
Commit	Line	Data
9eace6b1 JG	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
3a25a2b9	4	// file COPYING or http://www.opensource.org/licenses/mit-license.php.
9eace6b1 JG	5
	6	#include "walletdb.h"
	7	#include "wallet.h"
	8	#include <boost/filesystem.hpp>
	9
	10	using namespace std;
	11	using namespace boost;
	12
	13
	14	static uint64 nAccountingEntryNumber = 0;
	15
	16	extern CCriticalSection cs_db;
	17	extern map<string, int> mapFileUseCount;
	18	extern void CloseDb(const string& strFile);
	19
	20	//
	21	// CWalletDB
	22	//
	23
	24	bool CWalletDB::WriteName(const string& strAddress, const string& strName)
	25	{
	26	nWalletDBUpdated++;
	27	return Write(make_pair(string("name"), strAddress), strName);
	28	}
	29
	30	bool CWalletDB::EraseName(const string& strAddress)
	31	{
	32	// This should only be used for sending addresses, never for receiving addresses,
	33	// receiving addresses must always have an address book entry if they're not change return.
	34	nWalletDBUpdated++;
	35	return Erase(make_pair(string("name"), strAddress));
	36	}
	37
	38	bool CWalletDB::ReadAccount(const string& strAccount, CAccount& account)
	39	{
	40	account.SetNull();
	41	return Read(make_pair(string("acc"), strAccount), account);
	42	}
	43
	44	bool CWalletDB::WriteAccount(const string& strAccount, const CAccount& account)
	45	{
	46	return Write(make_pair(string("acc"), strAccount), account);
	47	}
	48
	49	bool CWalletDB::WriteAccountingEntry(const CAccountingEntry& acentry)
	50	{
	51	return Write(boost::make_tuple(string("acentry"), acentry.strAccount, ++nAccountingEntryNumber), acentry);
	52	}
	53
	54	int64 CWalletDB::GetAccountCreditDebit(const string& strAccount)
	55	{
	56	list<CAccountingEntry> entries;
	57	ListAccountCreditDebit(strAccount, entries);
	58
	59	int64 nCreditDebit = 0;
	60	BOOST_FOREACH (const CAccountingEntry& entry, entries)
	61	nCreditDebit += entry.nCreditDebit;
	62
	63	return nCreditDebit;
	64	}
	65
	66	void CWalletDB::ListAccountCreditDebit(const string& strAccount, list<CAccountingEntry>& entries)
	67	{
	68	bool fAllAccounts = (strAccount == "*");
69
70	Dbc* pcursor = GetCursor();
71	if (!pcursor)
72	throw runtime_error("CWalletDB::ListAccountCreditDebit() : cannot create DB cursor");
73	unsigned int fFlags = DB_SET_RANGE;
74	loop
75	{
76	// Read next record
6b6aaa16	77	CDataStream ssKey(SER_DISK, CLIENT_VERSION);
9eace6b1 JG	78	if (fFlags == DB_SET_RANGE)
9eace6b1 JG	79	ssKey << boost::make_tuple(string("acentry"), (fAllAccounts? string("") : strAccount), uint64(0));
6b6aaa16	80	CDataStream ssValue(SER_DISK, CLIENT_VERSION);
9eace6b1 JG	81	int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
	82	fFlags = DB_NEXT;
	83	if (ret == DB_NOTFOUND)
	84	break;
	85	else if (ret != 0)
	86	{
	87	pcursor->close();
	88	throw runtime_error("CWalletDB::ListAccountCreditDebit() : error scanning DB");
	89	}
	90
	91	// Unserialize
	92	string strType;
	93	ssKey >> strType;
	94	if (strType != "acentry")
	95	break;
	96	CAccountingEntry acentry;
	97	ssKey >> acentry.strAccount;
	98	if (!fAllAccounts && acentry.strAccount != strAccount)
	99	break;
	100
	101	ssValue >> acentry;
	102	entries.push_back(acentry);
	103	}
	104
	105	pcursor->close();
	106	}
	107
	108
	109	int CWalletDB::LoadWallet(CWallet* pwallet)
	110	{
	111	pwallet->vchDefaultKey.clear();
	112	int nFileVersion = 0;
	113	vector<uint256> vWalletUpgrade;
	114	bool fIsEncrypted = false;
	115
	116	//// todo: shouldn't we catch exceptions and try to recover and continue?
	117	{
	118	LOCK(pwallet->cs_wallet);
	119	int nMinVersion = 0;
	120	if (Read((string)"minversion", nMinVersion))
	121	{
	122	if (nMinVersion > CLIENT_VERSION)
	123	return DB_TOO_NEW;
	124	pwallet->LoadMinVersion(nMinVersion);
	125	}
	126
	127	// Get cursor
	128	Dbc* pcursor = GetCursor();
	129	if (!pcursor)
	130	{
	131	printf("Error getting wallet database cursor\n");
	132	return DB_CORRUPT;
	133	}
	134
	135	loop
	136	{
	137	// Read next record
6b6aaa16 PW	138	CDataStream ssKey(SER_DISK, CLIENT_VERSION);
6b6aaa16 PW	139	CDataStream ssValue(SER_DISK, CLIENT_VERSION);
9eace6b1 JG	140	int ret = ReadAtCursor(pcursor, ssKey, ssValue);
	141	if (ret == DB_NOTFOUND)
	142	break;
	143	else if (ret != 0)
	144	{
	145	printf("Error reading next record from wallet database\n");
	146	return DB_CORRUPT;
	147	}
	148
	149	// Unserialize
	150	// Taking advantage of the fact that pair serialization
	151	// is just the two items serialized one after the other
	152	string strType;
	153	ssKey >> strType;
	154	if (strType == "name")
	155	{
	156	string strAddress;
	157	ssKey >> strAddress;
	158	ssValue >> pwallet->mapAddressBook[strAddress];
	159	}
	160	else if (strType == "tx")
	161	{
	162	uint256 hash;
	163	ssKey >> hash;
	164	CWalletTx& wtx = pwallet->mapWallet[hash];
	165	ssValue >> wtx;
	166	wtx.BindWallet(pwallet);
	167
	168	if (wtx.GetHash() != hash)
	169	printf("Error in wallet.dat, hash mismatch\n");
	170
	171	// Undo serialize changes in 31600
	172	if (31404 <= wtx.fTimeReceivedIsTxTime && wtx.fTimeReceivedIsTxTime <= 31703)
	173	{
	174	if (!ssValue.empty())
	175	{
	176	char fTmp;
	177	char fUnused;
	178	ssValue >> fTmp >> fUnused >> wtx.strFromAccount;
	179	printf("LoadWallet() upgrading tx ver=%d %d '%s' %s\n", wtx.fTimeReceivedIsTxTime, fTmp, wtx.strFromAccount.c_str(), hash.ToString().c_str());
	180	wtx.fTimeReceivedIsTxTime = fTmp;
	181	}
	182	else
	183	{
	184	printf("LoadWallet() repairing tx ver=%d %s\n", wtx.fTimeReceivedIsTxTime, hash.ToString().c_str());
	185	wtx.fTimeReceivedIsTxTime = 0;
	186	}
	187	vWalletUpgrade.push_back(hash);
	188	}
	189
	190	//// debug print
	191	//printf("LoadWallet %s\n", wtx.GetHash().ToString().c_str());
82e6b92b	192	//printf(" %12"PRI64d" %s %s %s\n",
9eace6b1 JG	193	// wtx.vout[0].nValue,
	194	// DateTimeStrFormat("%x %H:%M:%S", wtx.GetBlockTime()).c_str(),
	195	// wtx.hashBlock.ToString().substr(0,20).c_str(),
	196	// wtx.mapValue["message"].c_str());
	197	}
	198	else if (strType == "acentry")
	199	{
	200	string strAccount;
	201	ssKey >> strAccount;
	202	uint64 nNumber;
	203	ssKey >> nNumber;
	204	if (nNumber > nAccountingEntryNumber)
	205	nAccountingEntryNumber = nNumber;
	206	}
	207	else if (strType == "key" \|\| strType == "wkey")
	208	{
	209	vector<unsigned char> vchPubKey;
	210	ssKey >> vchPubKey;
	211	CKey key;
	212	if (strType == "key")
	213	{
	214	CPrivKey pkey;
	215	ssValue >> pkey;
	216	key.SetPubKey(vchPubKey);
	217	key.SetPrivKey(pkey);
	218	if (key.GetPubKey() != vchPubKey)
	219	{
	220	printf("Error reading wallet database: CPrivKey pubkey inconsistency\n");
	221	return DB_CORRUPT;
	222	}
	223	if (!key.IsValid())
	224	{
	225	printf("Error reading wallet database: invalid CPrivKey\n");
	226	return DB_CORRUPT;
	227	}
	228	}
	229	else
	230	{
	231	CWalletKey wkey;
	232	ssValue >> wkey;
	233	key.SetPubKey(vchPubKey);
	234	key.SetPrivKey(wkey.vchPrivKey);
	235	if (key.GetPubKey() != vchPubKey)
	236	{
	237	printf("Error reading wallet database: CWalletKey pubkey inconsistency\n");
	238	return DB_CORRUPT;
	239	}
	240	if (!key.IsValid())
	241	{
	242	printf("Error reading wallet database: invalid CWalletKey\n");
	243	return DB_CORRUPT;
	244	}
	245	}
	246	if (!pwallet->LoadKey(key))
	247	{
	248	printf("Error reading wallet database: LoadKey failed\n");
	249	return DB_CORRUPT;
	250	}
	251	}
	252	else if (strType == "mkey")
	253	{
	254	unsigned int nID;
	255	ssKey >> nID;
	256	CMasterKey kMasterKey;
257	ssValue >> kMasterKey;
258	if(pwallet->mapMasterKeys.count(nID) != 0)
259	{
260	printf("Error reading wallet database: duplicate CMasterKey id %u\n", nID);
261	return DB_CORRUPT;
262	}
263	pwallet->mapMasterKeys[nID] = kMasterKey;
264	if (pwallet->nMasterKeyMaxID < nID)
265	pwallet->nMasterKeyMaxID = nID;
266	}
267	else if (strType == "ckey")
268	{
269	vector<unsigned char> vchPubKey;
270	ssKey >> vchPubKey;
271	vector<unsigned char> vchPrivKey;
272	ssValue >> vchPrivKey;
273	if (!pwallet->LoadCryptedKey(vchPubKey, vchPrivKey))
274	{
275	printf("Error reading wallet database: LoadCryptedKey failed\n");
276	return DB_CORRUPT;
277	}
278	fIsEncrypted = true;
279	}
280	else if (strType == "defaultkey")
281	{
282	ssValue >> pwallet->vchDefaultKey;
283	}
284	else if (strType == "pool")
285	{
286	int64 nIndex;
287	ssKey >> nIndex;
288	pwallet->setKeyPool.insert(nIndex);
289	}
290	else if (strType == "version")
291	{
292	ssValue >> nFileVersion;
293	if (nFileVersion == 10300)
294	nFileVersion = 300;
295	}
296	else if (strType == "cscript")
297	{
298	uint160 hash;
299	ssKey >> hash;
300	CScript script;
301	ssValue >> script;
302	if (!pwallet->LoadCScript(script))
303	{
304	printf("Error reading wallet database: LoadCScript failed\n");
305	return DB_CORRUPT;
306	}
307	}
308	}
309	pcursor->close();
310	}
311
312	BOOST_FOREACH(uint256 hash, vWalletUpgrade)
313	WriteTx(hash, pwallet->mapWallet[hash]);
314
315	printf("nFileVersion = %d\n", nFileVersion);
316
317
318	// Rewrite encrypted wallets of versions 0.4.0 and 0.5.0rc:
319	if (fIsEncrypted && (nFileVersion == 40000 \|\| nFileVersion == 50000))
320	return DB_NEED_REWRITE;
321
322	if (nFileVersion < CLIENT_VERSION) // Update
323	WriteVersion(CLIENT_VERSION);
324
325	return DB_LOAD_OK;
326	}
327
328	void ThreadFlushWalletDB(void* parg)
329	{
330	const string& strFile = ((const string*)parg)[0];
331	static bool fOneThread;
332	if (fOneThread)
333	return;
334	fOneThread = true;
335	if (!GetBoolArg("-flushwallet", true))
336	return;
337
338	unsigned int nLastSeen = nWalletDBUpdated;
339	unsigned int nLastFlushed = nWalletDBUpdated;
340	int64 nLastWalletUpdate = GetTime();
341	while (!fShutdown)
342	{
343	Sleep(500);
344
345	if (nLastSeen != nWalletDBUpdated)
346	{
347	nLastSeen = nWalletDBUpdated;
348	nLastWalletUpdate = GetTime();
349	}
350
351	if (nLastFlushed != nWalletDBUpdated && GetTime() - nLastWalletUpdate >= 2)
352	{
353	TRY_LOCK(cs_db,lockDb);
354	if (lockDb)
355	{
356	// Don't do this if any databases are in use
357	int nRefCount = 0;
358	map<string, int>::iterator mi = mapFileUseCount.begin();
359	while (mi != mapFileUseCount.end())
360	{
361	nRefCount += (*mi).second;
362	mi++;
363	}
364
365	if (nRefCount == 0 && !fShutdown)
366	{
367	map<string, int>::iterator mi = mapFileUseCount.find(strFile);
368	if (mi != mapFileUseCount.end())
369	{
9eace6b1 JG	370	printf("Flushing wallet.dat\n");
	371	nLastFlushed = nWalletDBUpdated;
	372	int64 nStart = GetTimeMillis();
	373
	374	// Flush wallet.dat so it's self contained
	375	CloseDb(strFile);
	376	dbenv.txn_checkpoint(0, 0, 0);
	377	dbenv.lsn_reset(strFile.c_str(), 0);
	378
	379	mapFileUseCount.erase(mi++);
	380	printf("Flushed wallet.dat %"PRI64d"ms\n", GetTimeMillis() - nStart);
	381	}
	382	}
	383	}
	384	}
	385	}
	386	}
	387
	388	bool BackupWallet(const CWallet& wallet, const string& strDest)
	389	{
	390	if (!wallet.fFileBacked)
	391	return false;
	392	while (!fShutdown)
	393	{
	394	{
	395	LOCK(cs_db);
	396	if (!mapFileUseCount.count(wallet.strWalletFile) \|\| mapFileUseCount[wallet.strWalletFile] == 0)
	397	{
	398	// Flush log data to the dat file
	399	CloseDb(wallet.strWalletFile);
	400	dbenv.txn_checkpoint(0, 0, 0);
	401	dbenv.lsn_reset(wallet.strWalletFile.c_str(), 0);
	402	mapFileUseCount.erase(wallet.strWalletFile);
	403
	404	// Copy wallet.dat
	405	filesystem::path pathSrc = GetDataDir() / wallet.strWalletFile;
	406	filesystem::path pathDest(strDest);
	407	if (filesystem::is_directory(pathDest))
	408	pathDest /= wallet.strWalletFile;
	409
	410	try {
	411	#if BOOST_VERSION >= 104000
	412	filesystem::copy_file(pathSrc, pathDest, filesystem::copy_option::overwrite_if_exists);
	413	#else
	414	filesystem::copy_file(pathSrc, pathDest);
	415	#endif
	416	printf("copied wallet.dat to %s\n", pathDest.string().c_str());
	417	return true;
	418	} catch(const filesystem::filesystem_error &e) {
	419	printf("error copying wallet.dat to %s - %s\n", pathDest.string().c_str(), e.what());
	420	return false;
	421	}
	422	}
	423	}
	424	Sleep(100);
	425	}
	426	return false;
	427	}