mirror of https://github.com/bitcoin/bitcoin.git
103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
// Copyright (c) 2017-2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <wallet/walletutil.h>
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#include <chainparams.h>
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#include <common/args.h>
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#include <key_io.h>
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#include <logging.h>
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namespace wallet {
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fs::path GetWalletDir()
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{
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fs::path path;
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if (gArgs.IsArgSet("-walletdir")) {
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path = gArgs.GetPathArg("-walletdir");
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if (!fs::is_directory(path)) {
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// If the path specified doesn't exist, we return the deliberately
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// invalid empty string.
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path = "";
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}
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} else {
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path = gArgs.GetDataDirNet();
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// If a wallets directory exists, use that, otherwise default to GetDataDir
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if (fs::is_directory(path / "wallets")) {
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path /= "wallets";
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}
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}
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return path;
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}
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bool IsFeatureSupported(int wallet_version, int feature_version)
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{
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return wallet_version >= feature_version;
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}
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WalletFeature GetClosestWalletFeature(int version)
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{
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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};
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for (const WalletFeature& wf : wallet_features) {
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if (version >= wf) return wf;
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}
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return static_cast<WalletFeature>(0);
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}
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WalletDescriptor GenerateWalletDescriptor(const CExtPubKey& master_key, const OutputType& addr_type, bool internal)
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{
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int64_t creation_time = GetTime();
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std::string xpub = EncodeExtPubKey(master_key);
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// Build descriptor string
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std::string desc_prefix;
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std::string desc_suffix = "/*)";
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switch (addr_type) {
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case OutputType::LEGACY: {
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desc_prefix = "pkh(" + xpub + "/44h";
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break;
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}
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case OutputType::P2SH_SEGWIT: {
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desc_prefix = "sh(wpkh(" + xpub + "/49h";
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desc_suffix += ")";
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break;
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}
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case OutputType::BECH32: {
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desc_prefix = "wpkh(" + xpub + "/84h";
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break;
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}
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case OutputType::BECH32M: {
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desc_prefix = "tr(" + xpub + "/86h";
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break;
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}
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case OutputType::UNKNOWN: {
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// We should never have a DescriptorScriptPubKeyMan for an UNKNOWN OutputType,
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// so if we get to this point something is wrong
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assert(false);
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}
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} // no default case, so the compiler can warn about missing cases
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assert(!desc_prefix.empty());
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// Mainnet derives at 0', testnet and regtest derive at 1'
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if (Params().IsTestChain()) {
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desc_prefix += "/1h";
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} else {
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desc_prefix += "/0h";
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}
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std::string internal_path = internal ? "/1" : "/0";
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std::string desc_str = desc_prefix + "/0h" + internal_path + desc_suffix;
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// Make the descriptor
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FlatSigningProvider keys;
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std::string error;
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std::unique_ptr<Descriptor> desc = Parse(desc_str, keys, error, false);
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WalletDescriptor w_desc(std::move(desc), creation_time, 0, 0, 0);
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return w_desc;
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}
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} // namespace wallet
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