forked from benjiqq/bitcoinArchive
-
Notifications
You must be signed in to change notification settings - Fork 71
/
db.h
420 lines (338 loc) · 10.7 KB
/
db.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
// Copyright (c) 2009 Satoshi Nakamoto
// Distributed under the MIT/X11 software license, see the accompanying
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
#include <db_cxx.h>
class CTransaction;
class CTxIndex;
class CDiskBlockIndex;
class CDiskTxPos;
class COutPoint;
class CUser;
class CReview;
class CAddress;
class CWalletTx;
extern map<string, string> mapAddressBook;
extern bool fClient;
extern DbEnv dbenv;
extern void DBFlush(bool fShutdown);
class CDB
{
protected:
Db* pdb;
string strFile;
vector<DbTxn*> vTxn;
explicit CDB(const char* pszFile, const char* pszMode="r+", bool fTxn=false);
~CDB() { Close(); }
public:
void Close();
private:
CDB(const CDB&);
void operator=(const CDB&);
protected:
template<typename K, typename T>
bool Read(const K& key, T& value)
{
if (!pdb)
return false;
// Key
CDataStream ssKey(SER_DISK);
ssKey.reserve(1000);
ssKey << key;
Dbt datKey(&ssKey[0], ssKey.size());
// Read
Dbt datValue;
datValue.set_flags(DB_DBT_MALLOC);
int ret = pdb->get(GetTxn(), &datKey, &datValue, 0);
memset(datKey.get_data(), 0, datKey.get_size());
if (datValue.get_data() == NULL)
return false;
// Unserialize value
CDataStream ssValue((char*)datValue.get_data(), (char*)datValue.get_data() + datValue.get_size(), SER_DISK);
ssValue >> value;
// Clear and free memory
memset(datValue.get_data(), 0, datValue.get_size());
free(datValue.get_data());
return (ret == 0);
}
template<typename K, typename T>
bool Write(const K& key, const T& value, bool fOverwrite=true)
{
if (!pdb)
return false;
// Key
CDataStream ssKey(SER_DISK);
ssKey.reserve(1000);
ssKey << key;
Dbt datKey(&ssKey[0], ssKey.size());
// Value
CDataStream ssValue(SER_DISK);
ssValue.reserve(10000);
ssValue << value;
Dbt datValue(&ssValue[0], ssValue.size());
// Write
int ret = pdb->put(GetTxn(), &datKey, &datValue, (fOverwrite ? 0 : DB_NOOVERWRITE));
// Clear memory in case it was a private key
memset(datKey.get_data(), 0, datKey.get_size());
memset(datValue.get_data(), 0, datValue.get_size());
return (ret == 0);
}
template<typename K>
bool Erase(const K& key)
{
if (!pdb)
return false;
// Key
CDataStream ssKey(SER_DISK);
ssKey.reserve(1000);
ssKey << key;
Dbt datKey(&ssKey[0], ssKey.size());
// Erase
int ret = pdb->del(GetTxn(), &datKey, 0);
// Clear memory
memset(datKey.get_data(), 0, datKey.get_size());
return (ret == 0 || ret == DB_NOTFOUND);
}
template<typename K>
bool Exists(const K& key)
{
if (!pdb)
return false;
// Key
CDataStream ssKey(SER_DISK);
ssKey.reserve(1000);
ssKey << key;
Dbt datKey(&ssKey[0], ssKey.size());
// Exists
int ret = pdb->exists(GetTxn(), &datKey, 0);
// Clear memory
memset(datKey.get_data(), 0, datKey.get_size());
return (ret == 0);
}
Dbc* GetCursor()
{
if (!pdb)
return NULL;
Dbc* pcursor = NULL;
int ret = pdb->cursor(NULL, &pcursor, 0);
if (ret != 0)
return NULL;
return pcursor;
}
int ReadAtCursor(Dbc* pcursor, CDataStream& ssKey, CDataStream& ssValue, unsigned int fFlags=DB_NEXT)
{
// Read at cursor
Dbt datKey;
if (fFlags == DB_SET || fFlags == DB_SET_RANGE || fFlags == DB_GET_BOTH || fFlags == DB_GET_BOTH_RANGE)
{
datKey.set_data(&ssKey[0]);
datKey.set_size(ssKey.size());
}
Dbt datValue;
if (fFlags == DB_GET_BOTH || fFlags == DB_GET_BOTH_RANGE)
{
datValue.set_data(&ssValue[0]);
datValue.set_size(ssValue.size());
}
datKey.set_flags(DB_DBT_MALLOC);
datValue.set_flags(DB_DBT_MALLOC);
int ret = pcursor->get(&datKey, &datValue, fFlags);
if (ret != 0)
return ret;
else if (datKey.get_data() == NULL || datValue.get_data() == NULL)
return 99999;
// Convert to streams
ssKey.SetType(SER_DISK);
ssKey.clear();
ssKey.write((char*)datKey.get_data(), datKey.get_size());
ssValue.SetType(SER_DISK);
ssValue.clear();
ssValue.write((char*)datValue.get_data(), datValue.get_size());
// Clear and free memory
memset(datKey.get_data(), 0, datKey.get_size());
memset(datValue.get_data(), 0, datValue.get_size());
free(datKey.get_data());
free(datValue.get_data());
return 0;
}
DbTxn* GetTxn()
{
if (!vTxn.empty())
return vTxn.back();
else
return NULL;
}
public:
bool TxnBegin()
{
if (!pdb)
return false;
DbTxn* ptxn = NULL;
int ret = dbenv.txn_begin(GetTxn(), &ptxn, 0);
if (!ptxn || ret != 0)
return false;
vTxn.push_back(ptxn);
return true;
}
bool TxnCommit()
{
if (!pdb)
return false;
if (vTxn.empty())
return false;
int ret = vTxn.back()->commit(0);
vTxn.pop_back();
return (ret == 0);
}
bool TxnAbort()
{
if (!pdb)
return false;
if (vTxn.empty())
return false;
int ret = vTxn.back()->abort();
vTxn.pop_back();
return (ret == 0);
}
bool ReadVersion(int& nVersion)
{
nVersion = 0;
return Read(string("version"), nVersion);
}
bool WriteVersion(int nVersion)
{
return Write(string("version"), nVersion);
}
};
class CTxDB : public CDB
{
public:
CTxDB(const char* pszMode="r+", bool fTxn=false) : CDB(!fClient ? "blkindex.dat" : NULL, pszMode, fTxn) { }
private:
CTxDB(const CTxDB&);
void operator=(const CTxDB&);
public:
bool ReadTxIndex(uint256 hash, CTxIndex& txindex);
bool UpdateTxIndex(uint256 hash, const CTxIndex& txindex);
bool AddTxIndex(const CTransaction& tx, const CDiskTxPos& pos, int nHeight);
bool EraseTxIndex(const CTransaction& tx);
bool ContainsTx(uint256 hash);
bool ReadOwnerTxes(uint160 hash160, int nHeight, vector<CTransaction>& vtx);
bool ReadDiskTx(uint256 hash, CTransaction& tx, CTxIndex& txindex);
bool ReadDiskTx(uint256 hash, CTransaction& tx);
bool ReadDiskTx(COutPoint outpoint, CTransaction& tx, CTxIndex& txindex);
bool ReadDiskTx(COutPoint outpoint, CTransaction& tx);
bool WriteBlockIndex(const CDiskBlockIndex& blockindex);
bool EraseBlockIndex(uint256 hash);
bool ReadHashBestChain(uint256& hashBestChain);
bool WriteHashBestChain(uint256 hashBestChain);
bool LoadBlockIndex();
};
class CReviewDB : public CDB
{
public:
CReviewDB(const char* pszMode="r+", bool fTxn=false) : CDB("reviews.dat", pszMode, fTxn) { }
private:
CReviewDB(const CReviewDB&);
void operator=(const CReviewDB&);
public:
bool ReadUser(uint256 hash, CUser& user)
{
return Read(make_pair(string("user"), hash), user);
}
bool WriteUser(uint256 hash, const CUser& user)
{
return Write(make_pair(string("user"), hash), user);
}
bool ReadReviews(uint256 hash, vector<CReview>& vReviews);
bool WriteReviews(uint256 hash, const vector<CReview>& vReviews);
};
class CMarketDB : public CDB
{
public:
CMarketDB(const char* pszMode="r+", bool fTxn=false) : CDB("market.dat", pszMode, fTxn) { }
private:
CMarketDB(const CMarketDB&);
void operator=(const CMarketDB&);
};
class CAddrDB : public CDB
{
public:
CAddrDB(const char* pszMode="r+", bool fTxn=false) : CDB("addr.dat", pszMode, fTxn) { }
private:
CAddrDB(const CAddrDB&);
void operator=(const CAddrDB&);
public:
bool WriteAddress(const CAddress& addr);
bool LoadAddresses();
};
bool LoadAddresses();
class CWalletDB : public CDB
{
public:
CWalletDB(const char* pszMode="r+", bool fTxn=false) : CDB("wallet.dat", pszMode, fTxn) { }
private:
CWalletDB(const CWalletDB&);
void operator=(const CWalletDB&);
public:
bool ReadName(const string& strAddress, string& strName)
{
strName = "";
return Read(make_pair(string("name"), strAddress), strName);
}
bool WriteName(const string& strAddress, const string& strName)
{
mapAddressBook[strAddress] = strName;
return Write(make_pair(string("name"), strAddress), strName);
}
bool EraseName(const string& strAddress)
{
mapAddressBook.erase(strAddress);
return Erase(make_pair(string("name"), strAddress));
}
bool ReadTx(uint256 hash, CWalletTx& wtx)
{
return Read(make_pair(string("tx"), hash), wtx);
}
bool WriteTx(uint256 hash, const CWalletTx& wtx)
{
return Write(make_pair(string("tx"), hash), wtx);
}
bool EraseTx(uint256 hash)
{
return Erase(make_pair(string("tx"), hash));
}
bool ReadKey(const vector<unsigned char>& vchPubKey, CPrivKey& vchPrivKey)
{
vchPrivKey.clear();
return Read(make_pair(string("key"), vchPubKey), vchPrivKey);
}
bool WriteKey(const vector<unsigned char>& vchPubKey, const CPrivKey& vchPrivKey)
{
return Write(make_pair(string("key"), vchPubKey), vchPrivKey, false);
}
bool ReadDefaultKey(vector<unsigned char>& vchPubKey)
{
vchPubKey.clear();
return Read(string("defaultkey"), vchPubKey);
}
bool WriteDefaultKey(const vector<unsigned char>& vchPubKey)
{
return Write(string("defaultkey"), vchPubKey);
}
template<typename T>
bool ReadSetting(const string& strKey, T& value)
{
return Read(make_pair(string("setting"), strKey), value);
}
template<typename T>
bool WriteSetting(const string& strKey, const T& value)
{
return Write(make_pair(string("setting"), strKey), value);
}
bool LoadWallet(vector<unsigned char>& vchDefaultKeyRet);
};
bool LoadWallet();
inline bool SetAddressBookName(const string& strAddress, const string& strName)
{
return CWalletDB().WriteName(strAddress, strName);
}