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// Copyright (c) 2016-2020 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 <fs.h>
#include <util/system.h>
#include <util/translation.h>
#include <wallet/salvage.h>
#include <wallet/wallet.h>
#include <wallet/walletutil.h>
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->Flush(true);
delete wallet;
}
static std::shared_ptr<CWallet> CreateWallet(const std::string& name, const fs::path& path)
{
if (fs::exists(path)) {
tfm::format(std::cerr, "Error: File exists already\n");
return nullptr;
}
// dummy chain interface
std::shared_ptr<CWallet> wallet_instance(new CWallet(nullptr /* chain */, WalletLocation(name), CreateWalletDatabase(path)), WalletToolReleaseWallet);
LOCK(wallet_instance->cs_wallet);
bool first_run = true;
DBErrors load_wallet_ret = wallet_instance->LoadWallet(first_run);
if (load_wallet_ret != DBErrors::LOAD_OK) {
tfm::format(std::cerr, "Error creating %s", name);
return nullptr;
}
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();
return wallet_instance;
}
static std::shared_ptr<CWallet> LoadWallet(const std::string& name, const fs::path& path)
{
if (!fs::exists(path)) {
tfm::format(std::cerr, "Error: Wallet files does not exist\n");
return nullptr;
}
// dummy chain interface
std::shared_ptr<CWallet> wallet_instance(new CWallet(nullptr /* chain */, WalletLocation(name), CreateWalletDatabase(path)), WalletToolReleaseWallet);
DBErrors load_wallet_ret;
try {
bool first_run;
load_wallet_ret = wallet_instance->LoadWallet(first_run);
} 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;
}
}
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());
}
static bool SalvageWallet(const fs::path& path)
{
// Create a Database handle to allow for the db to be initialized before recovery
std::unique_ptr<WalletDatabase> database = CreateWalletDatabase(path);
// Initialize the environment before recovery
bilingual_str error_string;
try {
WalletBatch::VerifyEnvironment(path, error_string);
} catch (const fs::filesystem_error& e) {
error_string = Untranslated(strprintf("Error loading wallet. %s", fsbridge::get_filesystem_error_message(e)));
}
if (!error_string.original.empty()) {
tfm::format(std::cerr, "Failed to open wallet for salvage :%s\n", error_string.original);
return false;
}
// Perform the recovery
return RecoverDatabaseFile(path);
}
bool ExecuteWalletToolFunc(const std::string& command, const std::string& name)
{
fs::path path = fs::absolute(name, GetWalletDir());
if (command == "create") {
std::shared_ptr<CWallet> wallet_instance = CreateWallet(name, path);
if (wallet_instance) {
WalletShowInfo(wallet_instance.get());
wallet_instance->Flush(true);
}
} else if (command == "info" || command == "salvage") {
if (!fs::exists(path)) {
tfm::format(std::cerr, "Error: no wallet file at %s\n", name);
return false;
}
bilingual_str error;
if (!WalletBatch::VerifyEnvironment(path, error)) {
tfm::format(std::cerr, "%s\nError loading %s. Is wallet being used by other process?\n", error.original, name);
return false;
}
if (command == "info") {
std::shared_ptr<CWallet> wallet_instance = LoadWallet(name, path);
if (!wallet_instance) return false;
WalletShowInfo(wallet_instance.get());
wallet_instance->Flush(true);
} else if (command == "salvage") {
return SalvageWallet(path);
}
} else {
tfm::format(std::cerr, "Invalid command: %s\n", command);
return false;
}
return true;
}
} // namespace WalletTool
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