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Add WriteHDKeypath function and move *HDKeypath to util/bip32.{h,cpp}

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Creates new files util/bip32.h and util/bip32.cpp for containing
BIP 32 stuff.
Moves FormatKeyPath from descriptor.cpp to util/bip32.
Adds a wrapper around it to prepent the 'm' for when just the
BIP 32 style keypath is needed.
This commit is contained in:
Andrew Chow
2018-11-06 09:23:43 -05:00
parent c45415f73a
commit e7652d3f64
10 changed files with 95 additions and 57 deletions
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41
src/util/strencodings.cpp
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@@ -546,47 +546,6 @@ bool ParseFixedPoint(const std::string &val, int decimals, int64_t *amount_out)
return true;
}
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;
}
void Downcase(std::string& str)
{
std::transform(str.begin(), str.end(), str.begin(), [](char c){return ToLower(c);});