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// Copyright (c) 2017-2022 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 <chainparams.h>
#include <common/args.h>
#include <key_io.h>
#include <logging.h>
namespace wallet {
fs::path GetWalletDir()
{
fs::path path;
if (gArgs.IsArgSet("-walletdir")) {
path = gArgs.GetPathArg("-walletdir");
if (!fs::is_directory(path)) {
// If the path specified doesn't exist, we return the deliberately
// invalid empty string.
path = "";
}
} else {
path = gArgs.GetDataDirNet();
// If a wallets directory exists, use that, otherwise default to GetDataDir
if (fs::is_directory(path / "wallets")) {
path /= "wallets";
}
}
return path;
}
bool IsFeatureSupported(int wallet_version, int feature_version)
{
return wallet_version >= feature_version;
}
WalletFeature GetClosestWalletFeature(int version)
{
static constexpr std::array 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);
}
WalletDescriptor GenerateWalletDescriptor(const CExtPubKey& master_key, const OutputType& addr_type, bool internal)
{
int64_t creation_time = GetTime();
std::string xpub = EncodeExtPubKey(master_key);
// Build descriptor string
std::string desc_prefix;
std::string desc_suffix = "/*)";
switch (addr_type) {
case OutputType::LEGACY: {
desc_prefix = "pkh(" + xpub + "/44h";
break;
}
case OutputType::P2SH_SEGWIT: {
desc_prefix = "sh(wpkh(" + xpub + "/49h";
desc_suffix += ")";
break;
}
case OutputType::BECH32: {
desc_prefix = "wpkh(" + xpub + "/84h";
break;
}
case OutputType::BECH32M: {
desc_prefix = "tr(" + xpub + "/86h";
break;
}
case OutputType::UNKNOWN: {
// We should never have a DescriptorScriptPubKeyMan for an UNKNOWN OutputType,
// so if we get to this point something is wrong
assert(false);
}
} // no default case, so the compiler can warn about missing cases
assert(!desc_prefix.empty());
// Mainnet derives at 0', testnet and regtest derive at 1'
if (Params().IsTestChain()) {
desc_prefix += "/1h";
} else {
desc_prefix += "/0h";
}
std::string internal_path = internal ? "/1" : "/0";
std::string desc_str = desc_prefix + "/0h" + internal_path + desc_suffix;
// Make the descriptor
FlatSigningProvider keys;
std::string error;
std::unique_ptr<Descriptor> desc = Parse(desc_str, keys, error, false);
WalletDescriptor w_desc(std::move(desc), creation_time, 0, 0, 0);
return w_desc;
}
} // namespace wallet
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