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// Copyright (c) 2017-2019 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/walletutil.h>
#include <logging.h>
#include <util/system.h>
bool ExistsBerkeleyDatabase(const fs::path& path);
#ifdef USE_SQLITE
bool ExistsSQLiteDatabase(const fs::path& path);
#else
# define ExistsSQLiteDatabase(path) (false)
#endif
fs::path GetWalletDir()
{
fs::path path;
if (gArgs.IsArgSet("-walletdir")) {
path = gArgs.GetArg("-walletdir", "");
if (!fs::is_directory(path)) {
// If the path specified doesn't exist, we return the deliberately
// invalid empty string.
path = "";
}
} else {
path = GetDataDir();
// If a wallets directory exists, use that, otherwise default to GetDataDir
if (fs::is_directory(path / "wallets")) {
path /= "wallets";
}
}
return path;
}
std::vector<fs::path> ListWalletDir()
{
const fs::path wallet_dir = GetWalletDir();
const size_t offset = wallet_dir.string().size() + 1;
std::vector<fs::path> paths;
boost::system::error_code ec;
for (auto it = fs::recursive_directory_iterator(wallet_dir, ec); it != fs::recursive_directory_iterator(); it.increment(ec)) {
if (ec) {
LogPrintf("%s: %s %s\n", __func__, ec.message(), it->path().string());
continue;
}
try {
// Get wallet path relative to walletdir by removing walletdir from the wallet path.
// This can be replaced by boost::filesystem::lexically_relative once boost is bumped to 1.60.
const fs::path path = it->path().string().substr(offset);
if (it->status().type() == fs::directory_file &&
(ExistsBerkeleyDatabase(it->path()) || ExistsSQLiteDatabase(it->path()))) {
// Found a directory which contains wallet.dat btree file, add it as a wallet.
paths.emplace_back(path);
} else if (it.level() == 0 && it->symlink_status().type() == fs::regular_file && ExistsBerkeleyDatabase(it->path())) {
if (it->path().filename() == "wallet.dat") {
// Found top-level wallet.dat btree file, add top level directory ""
// as a wallet.
paths.emplace_back();
} else {
// Found top-level btree file not called wallet.dat. Current bitcoin
// software will never create these files but will allow them to be
// opened in a shared database environment for backwards compatibility.
// Add it to the list of available wallets.
paths.emplace_back(path);
}
}
} catch (const std::exception& e) {
LogPrintf("%s: Error scanning %s: %s\n", __func__, it->path().string(), e.what());
it.no_push();
}
}
return paths;
}
bool IsFeatureSupported(int wallet_version, int feature_version)
{
return wallet_version >= feature_version;
}
WalletFeature GetClosestWalletFeature(int version)
{
const std::array<WalletFeature, 8> wallet_features{{FEATURE_LATEST, FEATURE_PRE_SPLIT_KEYPOOL, FEATURE_NO_DEFAULT_KEY, FEATURE_HD_SPLIT, FEATURE_HD, FEATURE_COMPRPUBKEY, FEATURE_WALLETCRYPT, FEATURE_BASE}};
for (const WalletFeature& wf : wallet_features) {
if (version >= wf) return wf;
}
return static_cast<WalletFeature>(0);
}
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