aboutsummaryrefslogtreecommitdiff
path: root/src/wallet/walletdb.h
blob: 2e9899acc6fe3c4222a5953d7b1a8cc4e5302f29 (plain)
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
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef BITCOIN_WALLET_WALLETDB_H
#define BITCOIN_WALLET_WALLETDB_H

#include "amount.h"
#include "primitives/transaction.h"
#include "wallet/db.h"
#include "key.h"

#include <list>
#include <stdint.h>
#include <string>
#include <utility>
#include <vector>

static const bool DEFAULT_FLUSHWALLET = true;

class CAccount;
class CAccountingEntry;
struct CBlockLocator;
class CKeyPool;
class CMasterKey;
class CScript;
class CWallet;
class CWalletTx;
class uint160;
class uint256;

/** Error statuses for the wallet database */
enum DBErrors
{
    DB_LOAD_OK,
    DB_CORRUPT,
    DB_NONCRITICAL_ERROR,
    DB_TOO_NEW,
    DB_LOAD_FAIL,
    DB_NEED_REWRITE
};

/* simple HD chain data model */
class CHDChain
{
public:
    uint32_t nExternalChainCounter;
    CKeyID masterKeyID; //!< master key hash160

    static const int CURRENT_VERSION = 1;
    int nVersion;

    CHDChain() { SetNull(); }
    ADD_SERIALIZE_METHODS;
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action)
    {
        READWRITE(this->nVersion);
        READWRITE(nExternalChainCounter);
        READWRITE(masterKeyID);
    }

    void SetNull()
    {
        nVersion = CHDChain::CURRENT_VERSION;
        nExternalChainCounter = 0;
        masterKeyID.SetNull();
    }
};

class CKeyMetadata
{
public:
    static const int VERSION_BASIC=1;
    static const int VERSION_WITH_HDDATA=10;
    static const int CURRENT_VERSION=VERSION_WITH_HDDATA;
    int nVersion;
    int64_t nCreateTime; // 0 means unknown
    std::string hdKeypath; //optional HD/bip32 keypath
    CKeyID hdMasterKeyID; //id of the HD masterkey used to derive this key

    CKeyMetadata()
    {
        SetNull();
    }
    CKeyMetadata(int64_t nCreateTime_)
    {
        SetNull();
        nCreateTime = nCreateTime_;
    }

    ADD_SERIALIZE_METHODS;

    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {
        READWRITE(this->nVersion);
        READWRITE(nCreateTime);
        if (this->nVersion >= VERSION_WITH_HDDATA)
        {
            READWRITE(hdKeypath);
            READWRITE(hdMasterKeyID);
        }
    }

    void SetNull()
    {
        nVersion = CKeyMetadata::CURRENT_VERSION;
        nCreateTime = 0;
        hdKeypath.clear();
        hdMasterKeyID.SetNull();
    }
};

/** Access to the wallet database */
class CWalletDB : public CDB
{
public:
    CWalletDB(const std::string& strFilename, const char* pszMode = "r+", bool _fFlushOnClose = true) : CDB(strFilename, pszMode, _fFlushOnClose)
    {
    }

    bool WriteName(const std::string& strAddress, const std::string& strName);
    bool EraseName(const std::string& strAddress);

    bool WritePurpose(const std::string& strAddress, const std::string& purpose);
    bool ErasePurpose(const std::string& strAddress);

    bool WriteTx(const CWalletTx& wtx);
    bool EraseTx(uint256 hash);

    bool WriteKey(const CPubKey& vchPubKey, const CPrivKey& vchPrivKey, const CKeyMetadata &keyMeta);
    bool WriteCryptedKey(const CPubKey& vchPubKey, const std::vector<unsigned char>& vchCryptedSecret, const CKeyMetadata &keyMeta);
    bool WriteMasterKey(unsigned int nID, const CMasterKey& kMasterKey);

    bool WriteCScript(const uint160& hash, const CScript& redeemScript);

    bool WriteWatchOnly(const CScript &script, const CKeyMetadata &keymeta);
    bool EraseWatchOnly(const CScript &script);

    bool WriteBestBlock(const CBlockLocator& locator);
    bool ReadBestBlock(CBlockLocator& locator);

    bool WriteOrderPosNext(int64_t nOrderPosNext);

    bool WriteDefaultKey(const CPubKey& vchPubKey);

    bool ReadPool(int64_t nPool, CKeyPool& keypool);
    bool WritePool(int64_t nPool, const CKeyPool& keypool);
    bool ErasePool(int64_t nPool);

    bool WriteMinVersion(int nVersion);

    /// This writes directly to the database, and will not update the CWallet's cached accounting entries!
    /// Use wallet.AddAccountingEntry instead, to write *and* update its caches.
    bool WriteAccountingEntry(const uint64_t nAccEntryNum, const CAccountingEntry& acentry);
    bool WriteAccountingEntry_Backend(const CAccountingEntry& acentry);
    bool ReadAccount(const std::string& strAccount, CAccount& account);
    bool WriteAccount(const std::string& strAccount, const CAccount& account);

    /// Write destination data key,value tuple to database
    bool WriteDestData(const std::string &address, const std::string &key, const std::string &value);
    /// Erase destination data tuple from wallet database
    bool EraseDestData(const std::string &address, const std::string &key);

    CAmount GetAccountCreditDebit(const std::string& strAccount);
    void ListAccountCreditDebit(const std::string& strAccount, std::list<CAccountingEntry>& acentries);

    DBErrors LoadWallet(CWallet* pwallet);
    DBErrors FindWalletTx(std::vector<uint256>& vTxHash, std::vector<CWalletTx>& vWtx);
    DBErrors ZapWalletTx(std::vector<CWalletTx>& vWtx);
    DBErrors ZapSelectTx(std::vector<uint256>& vHashIn, std::vector<uint256>& vHashOut);
    /* Try to (very carefully!) recover wallet database (with a possible key type filter) */
    static bool Recover(const std::string& filename, void *callbackDataIn, bool (*recoverKVcallback)(void* callbackData, CDataStream ssKey, CDataStream ssValue));
    /* Recover convenience-function to bypass the key filter callback, called when verify failes, recoveres everything */
    static bool Recover(const std::string& filename);
    /* Recover filter (used as callback), will only let keys (cryptographical keys) as KV/key-type pass through */
    static bool RecoverKeysOnlyFilter(void *callbackData, CDataStream ssKey, CDataStream ssValue);
    /* Function to determin if a certain KV/key-type is a key (cryptographical key) type */
    static bool IsKeyType(const std::string& strType);
    /* verifies the database environment */
    static bool VerifyEnvironment(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& errorStr);
    /* verifies the database file */
    static bool VerifyDatabaseFile(const std::string& walletFile, const boost::filesystem::path& dataDir, std::string& warningStr, std::string& errorStr);

    //! write the hdchain model (external chain child index counter)
    bool WriteHDChain(const CHDChain& chain);

    static void IncrementUpdateCounter();
    static unsigned int GetUpdateCounter();
private:
    CWalletDB(const CWalletDB&);
    void operator=(const CWalletDB&);
};

//! Compacts BDB state so that wallet.dat is self-contained (if there are changes)
void MaybeCompactWalletDB();

#endif // BITCOIN_WALLET_WALLETDB_H