aboutsummaryrefslogtreecommitdiff
path: root/src/wallet/init.cpp
blob: 18365b1b72a01e824e547b51a6358f85d7303c14 (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
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
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include "wallet/init.h"

#include "net.h"
#include "util.h"
#include "utilmoneystr.h"
#include "validation.h"
#include "wallet/wallet.h"

std::string GetWalletHelpString(bool showDebug)
{
    std::string strUsage = HelpMessageGroup(_("Wallet options:"));
    strUsage += HelpMessageOpt("-disablewallet", _("Do not load the wallet and disable wallet RPC calls"));
    strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), DEFAULT_KEYPOOL_SIZE));
    strUsage += HelpMessageOpt("-fallbackfee=<amt>", strprintf(_("A fee rate (in %s/kB) that will be used when fee estimation has insufficient data (default: %s)"),
                                                               CURRENCY_UNIT, FormatMoney(DEFAULT_FALLBACK_FEE)));
    strUsage += HelpMessageOpt("-discardfee=<amt>", strprintf(_("The fee rate (in %s/kB) that indicates your tolerance for discarding change by adding it to the fee (default: %s). "
                                                                "Note: An output is discarded if it is dust at this rate, but we will always discard up to the dust relay fee and a discard fee above that is limited by the fee estimate for the longest target"),
                                                              CURRENCY_UNIT, FormatMoney(DEFAULT_DISCARD_FEE)));
    strUsage += HelpMessageOpt("-mintxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)"),
                                                            CURRENCY_UNIT, FormatMoney(DEFAULT_TRANSACTION_MINFEE)));
    strUsage += HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in %s/kB) to add to transactions you send (default: %s)"),
                                                            CURRENCY_UNIT, FormatMoney(payTxFee.GetFeePerK())));
    strUsage += HelpMessageOpt("-rescan", _("Rescan the block chain for missing wallet transactions on startup"));
    strUsage += HelpMessageOpt("-salvagewallet", _("Attempt to recover private keys from a corrupt wallet on startup"));
    strUsage += HelpMessageOpt("-spendzeroconfchange", strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), DEFAULT_SPEND_ZEROCONF_CHANGE));
    strUsage += HelpMessageOpt("-txconfirmtarget=<n>", strprintf(_("If paytxfee is not set, include enough fee so transactions begin confirmation on average within n blocks (default: %u)"), DEFAULT_TX_CONFIRM_TARGET));
    strUsage += HelpMessageOpt("-usehd", _("Use hierarchical deterministic key generation (HD) after BIP32. Only has effect during wallet creation/first start") + " " + strprintf(_("(default: %u)"), DEFAULT_USE_HD_WALLET));
    strUsage += HelpMessageOpt("-walletrbf", strprintf(_("Send transactions with full-RBF opt-in enabled (default: %u)"), DEFAULT_WALLET_RBF));
    strUsage += HelpMessageOpt("-upgradewallet", _("Upgrade wallet to latest format on startup"));
    strUsage += HelpMessageOpt("-wallet=<file>", _("Specify wallet file (within data directory)") + " " + strprintf(_("(default: %s)"), DEFAULT_WALLET_DAT));
    strUsage += HelpMessageOpt("-walletbroadcast", _("Make the wallet broadcast transactions") + " " + strprintf(_("(default: %u)"), DEFAULT_WALLETBROADCAST));
    strUsage += HelpMessageOpt("-walletnotify=<cmd>", _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)"));
    strUsage += HelpMessageOpt("-zapwallettxes=<mode>", _("Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup") +
                               " " + _("(1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data)"));

    if (showDebug)
    {
        strUsage += HelpMessageGroup(_("Wallet debugging/testing options:"));

        strUsage += HelpMessageOpt("-dblogsize=<n>", strprintf("Flush wallet database activity from memory to disk log every <n> megabytes (default: %u)", DEFAULT_WALLET_DBLOGSIZE));
        strUsage += HelpMessageOpt("-flushwallet", strprintf("Run a thread to flush wallet periodically (default: %u)", DEFAULT_FLUSHWALLET));
        strUsage += HelpMessageOpt("-privdb", strprintf("Sets the DB_PRIVATE flag in the wallet db environment (default: %u)", DEFAULT_WALLET_PRIVDB));
        strUsage += HelpMessageOpt("-walletrejectlongchains", strprintf(_("Wallet will not create transactions that violate mempool chain limits (default: %u)"), DEFAULT_WALLET_REJECT_LONG_CHAINS));
    }

    return strUsage;
}

bool WalletParameterInteraction()
{
    gArgs.SoftSetArg("-wallet", DEFAULT_WALLET_DAT);
    const bool is_multiwallet = gArgs.GetArgs("-wallet").size() > 1;

    if (gArgs.GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET))
        return true;

    if (gArgs.GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY) && gArgs.SoftSetBoolArg("-walletbroadcast", false)) {
        LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -walletbroadcast=0\n", __func__);
    }

    if (gArgs.GetBoolArg("-salvagewallet", false)) {
        if (is_multiwallet) {
            return InitError(strprintf("%s is only allowed with a single wallet file", "-salvagewallet"));
        }
        // Rewrite just private keys: rescan to find transactions
        if (gArgs.SoftSetBoolArg("-rescan", true)) {
            LogPrintf("%s: parameter interaction: -salvagewallet=1 -> setting -rescan=1\n", __func__);
        }
    }

    int zapwallettxes = gArgs.GetArg("-zapwallettxes", 0);
    // -zapwallettxes implies dropping the mempool on startup
    if (zapwallettxes != 0 && gArgs.SoftSetBoolArg("-persistmempool", false)) {
        LogPrintf("%s: parameter interaction: -zapwallettxes=%s -> setting -persistmempool=0\n", __func__, zapwallettxes);
    }

    // -zapwallettxes implies a rescan
    if (zapwallettxes != 0) {
        if (is_multiwallet) {
            return InitError(strprintf("%s is only allowed with a single wallet file", "-zapwallettxes"));
        }
        if (gArgs.SoftSetBoolArg("-rescan", true)) {
            LogPrintf("%s: parameter interaction: -zapwallettxes=%s -> setting -rescan=1\n", __func__, zapwallettxes);
        }
    }

    if (is_multiwallet) {
        if (gArgs.GetBoolArg("-upgradewallet", false)) {
            return InitError(strprintf("%s is only allowed with a single wallet file", "-upgradewallet"));
        }
    }

    if (gArgs.GetBoolArg("-sysperms", false))
        return InitError("-sysperms is not allowed in combination with enabled wallet functionality");
    if (gArgs.GetArg("-prune", 0) && gArgs.GetBoolArg("-rescan", false))
        return InitError(_("Rescans are not possible in pruned mode. You will need to use -reindex which will download the whole blockchain again."));

    if (::minRelayTxFee.GetFeePerK() > HIGH_TX_FEE_PER_KB)
        InitWarning(AmountHighWarn("-minrelaytxfee") + " " +
                    _("The wallet will avoid paying less than the minimum relay fee."));

    if (gArgs.IsArgSet("-mintxfee"))
    {
        CAmount n = 0;
        if (!ParseMoney(gArgs.GetArg("-mintxfee", ""), n) || 0 == n)
            return InitError(AmountErrMsg("mintxfee", gArgs.GetArg("-mintxfee", "")));
        if (n > HIGH_TX_FEE_PER_KB)
            InitWarning(AmountHighWarn("-mintxfee") + " " +
                        _("This is the minimum transaction fee you pay on every transaction."));
        CWallet::minTxFee = CFeeRate(n);
    }
    if (gArgs.IsArgSet("-fallbackfee"))
    {
        CAmount nFeePerK = 0;
        if (!ParseMoney(gArgs.GetArg("-fallbackfee", ""), nFeePerK))
            return InitError(strprintf(_("Invalid amount for -fallbackfee=<amount>: '%s'"), gArgs.GetArg("-fallbackfee", "")));
        if (nFeePerK > HIGH_TX_FEE_PER_KB)
            InitWarning(AmountHighWarn("-fallbackfee") + " " +
                        _("This is the transaction fee you may pay when fee estimates are not available."));
        CWallet::fallbackFee = CFeeRate(nFeePerK);
    }
    if (gArgs.IsArgSet("-discardfee"))
    {
        CAmount nFeePerK = 0;
        if (!ParseMoney(gArgs.GetArg("-discardfee", ""), nFeePerK))
            return InitError(strprintf(_("Invalid amount for -discardfee=<amount>: '%s'"), gArgs.GetArg("-discardfee", "")));
        if (nFeePerK > HIGH_TX_FEE_PER_KB)
            InitWarning(AmountHighWarn("-discardfee") + " " +
                        _("This is the transaction fee you may discard if change is smaller than dust at this level"));
        CWallet::m_discard_rate = CFeeRate(nFeePerK);
    }
    if (gArgs.IsArgSet("-paytxfee"))
    {
        CAmount nFeePerK = 0;
        if (!ParseMoney(gArgs.GetArg("-paytxfee", ""), nFeePerK))
            return InitError(AmountErrMsg("paytxfee", gArgs.GetArg("-paytxfee", "")));
        if (nFeePerK > HIGH_TX_FEE_PER_KB)
            InitWarning(AmountHighWarn("-paytxfee") + " " +
                        _("This is the transaction fee you will pay if you send a transaction."));

        payTxFee = CFeeRate(nFeePerK, 1000);
        if (payTxFee < ::minRelayTxFee)
        {
            return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)"),
                                       gArgs.GetArg("-paytxfee", ""), ::minRelayTxFee.ToString()));
        }
    }
    if (gArgs.IsArgSet("-maxtxfee"))
    {
        CAmount nMaxFee = 0;
        if (!ParseMoney(gArgs.GetArg("-maxtxfee", ""), nMaxFee))
            return InitError(AmountErrMsg("maxtxfee", gArgs.GetArg("-maxtxfee", "")));
        if (nMaxFee > HIGH_MAX_TX_FEE)
            InitWarning(_("-maxtxfee is set very high! Fees this large could be paid on a single transaction."));
        maxTxFee = nMaxFee;
        if (CFeeRate(maxTxFee, 1000) < ::minRelayTxFee)
        {
            return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay fee of %s to prevent stuck transactions)"),
                                       gArgs.GetArg("-maxtxfee", ""), ::minRelayTxFee.ToString()));
        }
    }
    nTxConfirmTarget = gArgs.GetArg("-txconfirmtarget", DEFAULT_TX_CONFIRM_TARGET);
    bSpendZeroConfChange = gArgs.GetBoolArg("-spendzeroconfchange", DEFAULT_SPEND_ZEROCONF_CHANGE);
    fWalletRbf = gArgs.GetBoolArg("-walletrbf", DEFAULT_WALLET_RBF);

    return true;
}

bool WalletVerify()
{
    if (gArgs.GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET))
        return true;

    uiInterface.InitMessage(_("Verifying wallet(s)..."));

    // Keep track of each wallet absolute path to detect duplicates.
    std::set<fs::path> wallet_paths;

    for (const std::string& walletFile : gArgs.GetArgs("-wallet")) {
        if (boost::filesystem::path(walletFile).filename() != walletFile) {
            return InitError(strprintf(_("Error loading wallet %s. -wallet parameter must only specify a filename (not a path)."), walletFile));
        }

        if (SanitizeString(walletFile, SAFE_CHARS_FILENAME) != walletFile) {
            return InitError(strprintf(_("Error loading wallet %s. Invalid characters in -wallet filename."), walletFile));
        }

        fs::path wallet_path = fs::absolute(walletFile, GetDataDir());

        if (fs::exists(wallet_path) && (!fs::is_regular_file(wallet_path) || fs::is_symlink(wallet_path))) {
            return InitError(strprintf(_("Error loading wallet %s. -wallet filename must be a regular file."), walletFile));
        }

        if (!wallet_paths.insert(wallet_path).second) {
            return InitError(strprintf(_("Error loading wallet %s. Duplicate -wallet filename specified."), walletFile));
        }

        std::string strError;
        if (!CWalletDB::VerifyEnvironment(walletFile, GetDataDir().string(), strError)) {
            return InitError(strError);
        }

        if (gArgs.GetBoolArg("-salvagewallet", false)) {
            // Recover readable keypairs:
            CWallet dummyWallet;
            std::string backup_filename;
            if (!CWalletDB::Recover(walletFile, (void *)&dummyWallet, CWalletDB::RecoverKeysOnlyFilter, backup_filename)) {
                return false;
            }
        }

        std::string strWarning;
        bool dbV = CWalletDB::VerifyDatabaseFile(walletFile, GetDataDir().string(), strWarning, strError);
        if (!strWarning.empty()) {
            InitWarning(strWarning);
        }
        if (!dbV) {
            InitError(strError);
            return false;
        }
    }

    return true;
}

bool InitLoadWallet()
{
    if (gArgs.GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET)) {
        LogPrintf("Wallet disabled!\n");
        return true;
    }

    for (const std::string& walletFile : gArgs.GetArgs("-wallet")) {
        CWallet * const pwallet = CWallet::CreateWalletFromFile(walletFile);
        if (!pwallet) {
            return false;
        }
        vpwallets.push_back(pwallet);
    }

    return true;
}