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// Copyright (c) 2019-2020 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 <tinyformat.h>
#include <util/bip32.h>
#include <util/strencodings.h>
#include <algorithm>
#include <cstdint>
#include <cstdio>
#include <sstream>
bool ParseHDKeypath(const std::string& keypath_str, std::vector<uint32_t>& keypath)
{
std::stringstream ss(keypath_str);
std::string item;
bool first = true;
while (std::getline(ss, item, '/')) {
if (item.compare("m") == 0) {
if (first) {
first = false;
continue;
}
return false;
}
// Finds whether it is hardened
uint32_t path = 0;
size_t pos = item.find("'");
if (pos != std::string::npos) {
// The hardened tick can only be in the last index of the string
if (pos != item.size() - 1) {
return false;
}
path |= 0x80000000;
item = item.substr(0, item.size() - 1); // Drop the last character which is the hardened tick
}
// Ensure this is only numbers
if (item.find_first_not_of( "0123456789" ) != std::string::npos) {
return false;
}
uint32_t number;
if (!ParseUInt32(item, &number)) {
return false;
}
path |= number;
keypath.push_back(path);
first = false;
}
return true;
}
std::string FormatHDKeypath(const std::vector<uint32_t>& path)
{
std::string ret;
for (auto i : path) {
ret += strprintf("/%i", (i << 1) >> 1);
if (i >> 31) ret += '\'';
}
return ret;
}
std::string WriteHDKeypath(const std::vector<uint32_t>& keypath)
{
return "m" + FormatHDKeypath(keypath);
}
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