fc4db35bfd
ListWalletDir returns all available wallets in the current wallet directory. Based on MeshCollider work in pull #11485.
77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
// Copyright (c) 2017-2018 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 <wallet/walletutil.h>
|
|
|
|
#include <util.h>
|
|
|
|
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;
|
|
}
|
|
|
|
static bool IsBerkeleyBtree(const fs::path& path)
|
|
{
|
|
// A Berkeley DB Btree file has at least 4K.
|
|
// This check also prevents opening lock files.
|
|
boost::system::error_code ec;
|
|
if (fs::file_size(path, ec) < 4096) return false;
|
|
|
|
fs::ifstream file(path.string(), std::ios::binary);
|
|
if (!file.is_open()) return false;
|
|
|
|
file.seekg(12, std::ios::beg); // Magic bytes start at offset 12
|
|
uint32_t data = 0;
|
|
file.read((char*) &data, sizeof(data)); // Read 4 bytes of file to compare against magic
|
|
|
|
// Berkeley DB Btree magic bytes, from:
|
|
// https://github.com/file/file/blob/5824af38469ec1ca9ac3ffd251e7afe9dc11e227/magic/Magdir/database#L74-L75
|
|
// - big endian systems - 00 05 31 62
|
|
// - little endian systems - 62 31 05 00
|
|
return data == 0x00053162 || data == 0x62310500;
|
|
}
|
|
|
|
std::vector<fs::path> ListWalletDir()
|
|
{
|
|
const fs::path wallet_dir = GetWalletDir();
|
|
std::vector<fs::path> paths;
|
|
|
|
for (auto it = fs::recursive_directory_iterator(wallet_dir); it != end(it); ++it) {
|
|
if (it->status().type() == fs::directory_file && IsBerkeleyBtree(it->path() / "wallet.dat")) {
|
|
// Found a directory which contains wallet.dat btree file, add it as a wallet.
|
|
paths.emplace_back(fs::relative(it->path(), wallet_dir));
|
|
} else if (it.level() == 0 && it->symlink_status().type() == fs::regular_file && IsBerkeleyBtree(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(fs::relative(it->path(), wallet_dir));
|
|
}
|
|
}
|
|
}
|
|
|
|
return paths;
|
|
}
|