wallettool.cpp

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// Copyright (c) 2016-2018 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 <chainparams.h>
#include <common/system.h>
#include <util/fs.h>
#include <util/translation.h>
#include <wallet/salvage.h>
#include <wallet/wallet.h>
#include <wallet/walletutil.h>
 
#include <stdexcept>
 
namespace WalletTool {
 
// The standard wallet deleter function blocks on the validation interface
// queue, which doesn't exist for the bitcoin-wallet. Define our own
// deleter here.
static void WalletToolReleaseWallet(CWallet *wallet) {
    wallet->WalletLogPrintf("Releasing wallet\n");
    wallet->Close();
    delete wallet;
}
 
static void WalletCreate(CWallet *wallet_instance) {
    LOCK(wallet_instance->cs_wallet);
 
    wallet_instance->SetMinVersion(FEATURE_HD_SPLIT);
 
    // generate a new HD seed
    auto spk_man = wallet_instance->GetOrCreateLegacyScriptPubKeyMan();
    CPubKey seed = spk_man->GenerateNewSeed();
    spk_man->SetHDSeed(seed);
 
    tfm::format(std::cout, "Topping up keypool...\n");
    wallet_instance->TopUpKeyPool();
}
 
static std::shared_ptr<CWallet> MakeWallet(const std::string &name,
                                           const fs::path &path, bool create) {
    DatabaseOptions options;
    DatabaseStatus status;
    if (create) {
        options.require_create = true;
    } else {
        options.require_existing = true;
    }
    bilingual_str error;
    std::unique_ptr<WalletDatabase> database =
        MakeDatabase(path, options, status, error);
    if (!database) {
        tfm::format(std::cerr, "%s\n", error.original);
        return nullptr;
    }
 
    // dummy chain interface
    std::shared_ptr<CWallet> wallet_instance{
        new CWallet(nullptr /* chain */, name, std::move(database)),
        WalletToolReleaseWallet};
    DBErrors load_wallet_ret;
    try {
        load_wallet_ret = wallet_instance->LoadWallet();
    } catch (const std::runtime_error &) {
        tfm::format(
            std::cerr,
            "Error loading %s. Is wallet being used by another process?\n",
            name);
        return nullptr;
    }
 
    if (load_wallet_ret != DBErrors::LOAD_OK) {
        wallet_instance = nullptr;
        if (load_wallet_ret == DBErrors::CORRUPT) {
            tfm::format(std::cerr, "Error loading %s: Wallet corrupted", name);
            return nullptr;
        } else if (load_wallet_ret == DBErrors::NONCRITICAL_ERROR) {
            tfm::format(
                std::cerr,
                "Error reading %s! All keys read correctly, but transaction "
                "data or address book entries might be missing or incorrect.",
                name);
        } else if (load_wallet_ret == DBErrors::TOO_NEW) {
            tfm::format(std::cerr,
                        "Error loading %s: Wallet requires newer version of %s",
                        name, PACKAGE_NAME);
            return nullptr;
        } else if (load_wallet_ret == DBErrors::NEED_REWRITE) {
            tfm::format(std::cerr,
                        "Wallet needed to be rewritten: restart %s to complete",
                        PACKAGE_NAME);
            return nullptr;
        } else {
            tfm::format(std::cerr, "Error loading %s", name);
            return nullptr;
        }
    }
 
    if (create) {
        WalletCreate(wallet_instance.get());
    }
 
    return wallet_instance;
}
 
static void WalletShowInfo(CWallet *wallet_instance) {
    LOCK(wallet_instance->cs_wallet);
 
    tfm::format(std::cout, "Wallet info\n===========\n");
    tfm::format(std::cout, "Encrypted: %s\n",
                wallet_instance->IsCrypted() ? "yes" : "no");
    tfm::format(std::cout, "HD (hd seed available): %s\n",
                wallet_instance->IsHDEnabled() ? "yes" : "no");
    tfm::format(std::cout, "Keypool Size: %u\n",
                wallet_instance->GetKeyPoolSize());
    tfm::format(std::cout, "Transactions: %zu\n",
                wallet_instance->mapWallet.size());
    tfm::format(std::cout, "Address Book: %zu\n",
                wallet_instance->m_address_book.size());
}
 
bool ExecuteWalletToolFunc(const std::string &command,
                           const std::string &name) {
    const fs::path path =
        fsbridge::AbsPathJoin(GetWalletDir(), fs::PathFromString(name));
 
    if (command == "create") {
        std::shared_ptr<CWallet> wallet_instance =
            MakeWallet(name, path, /* create= */ true);
        if (wallet_instance) {
            WalletShowInfo(wallet_instance.get());
            wallet_instance->Close();
        }
    } else if (command == "info" || command == "salvage") {
        if (command == "info") {
            std::shared_ptr<CWallet> wallet_instance =
                MakeWallet(name, path, /* create= */ false);
            if (!wallet_instance) {
                return false;
            }
            WalletShowInfo(wallet_instance.get());
            wallet_instance->Close();
        } else if (command == "salvage") {
            bilingual_str error;
            std::vector<bilingual_str> warnings;
            bool ret = RecoverDatabaseFile(path, error, warnings);
            if (!ret) {
                for (const auto &warning : warnings) {
                    tfm::format(std::cerr, "%s\n", warning.original);
                }
                if (!error.empty()) {
                    tfm::format(std::cerr, "%s\n", error.original);
                }
            }
            return ret;
        }
    } else {
        tfm::format(std::cerr, "Invalid command: %s\n", command);
        return false;
    }
 
    return true;
}
} // namespace WalletTool