Bitcoin Core 29.99.0
P2P Digital Currency
bip32.cpp
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1// Copyright (c) 2019-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#include <tinyformat.h>
6#include <util/bip32.h>
7#include <util/strencodings.h>
8
9#include <cstdint>
10#include <cstdio>
11#include <sstream>
12
13bool ParseHDKeypath(const std::string& keypath_str, std::vector<uint32_t>& keypath)
14{
15 std::stringstream ss(keypath_str);
16 std::string item;
17 bool first = true;
18 while (std::getline(ss, item, '/')) {
19 if (item.compare("m") == 0) {
20 if (first) {
21 first = false;
22 continue;
23 }
24 return false;
25 }
26 // Finds whether it is hardened
27 uint32_t path = 0;
28 size_t pos = item.find('\'');
29 if (pos != std::string::npos) {
30 // The hardened tick can only be in the last index of the string
31 if (pos != item.size() - 1) {
32 return false;
33 }
34 path |= 0x80000000;
35 item = item.substr(0, item.size() - 1); // Drop the last character which is the hardened tick
36 }
37
38 // Ensure this is only numbers
39 const auto number{ToIntegral<uint32_t>(item)};
40 if (!number) {
41 return false;
42 }
43 path |= *number;
44
45 keypath.push_back(path);
46 first = false;
47 }
48 return true;
49}
50
51std::string FormatHDKeypath(const std::vector<uint32_t>& path, bool apostrophe)
52{
53 std::string ret;
54 for (auto i : path) {
55 ret += strprintf("/%i", (i << 1) >> 1);
56 if (i >> 31) ret += apostrophe ? '\'' : 'h';
57 }
58 return ret;
59}
60
61std::string WriteHDKeypath(const std::vector<uint32_t>& keypath, bool apostrophe)
62{
63 return "m" + FormatHDKeypath(keypath, apostrophe);
64}
bool ParseHDKeypath(const std::string &keypath_str, std::vector< uint32_t > &keypath)
Parse an HD keypaths like "m/7/0'/2000".
Definition: bip32.cpp:13
std::string FormatHDKeypath(const std::vector< uint32_t > &path, bool apostrophe)
Definition: bip32.cpp:51
std::string WriteHDKeypath(const std::vector< uint32_t > &keypath, bool apostrophe)
Write HD keypaths as strings.
Definition: bip32.cpp:61
int ret
#define strprintf
Format arguments and return the string or write to given std::ostream (see tinyformat::format doc for...
Definition: tinyformat.h:1172