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Differential D6204 Diff 20553 src/script/descriptor.cpp

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src/script/descriptor.cpp

// Copyright (c) 2018 The Bitcoin Core developers // Copyright (c) 2018 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying // Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php. // file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <script/descriptor.h> #include <script/descriptor.h>
#include <chainparams.h> // For Params() #include <chainparams.h> // For Params()
#include <config.h> #include <config.h>
#include <key_io.h> #include <key_io.h>
#include <pubkey.h> #include <pubkey.h>
#include <script/script.h> #include <script/script.h>
#include <script/standard.h> #include <script/standard.h>
#include <span.h> #include <span.h>
#include <util/bip32.h>
#include <util/strencodings.h> #include <util/strencodings.h>
#include <util/system.h> #include <util/system.h>
#include <memory> #include <memory>
#include <string> #include <string>
#include <vector> #include <vector>
namespace { namespace {
//////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////
// Internal representation // // Internal representation //
//////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////
typedef std::vector<uint32_t> KeyPath; typedef std::vector<uint32_t> KeyPath;
std::string FormatKeyPath(const KeyPath &path) {
std::string ret;
for (auto i : path) {
ret += strprintf("/%i", (i << 1) >> 1);
if (i >> 31) {
ret += '\'';
}
}
return ret;
}
/** Interface for public key objects in descriptors. */ /** Interface for public key objects in descriptors. */
struct PubkeyProvider { struct PubkeyProvider {
virtual ~PubkeyProvider() = default; virtual ~PubkeyProvider() = default;
/** Derive a public key. If key==nullptr, only info is desired. */ /** Derive a public key. If key==nullptr, only info is desired. */
virtual bool GetPubKey(int pos, const SigningProvider &arg, CPubKey *key, virtual bool GetPubKey(int pos, const SigningProvider &arg, CPubKey *key,
KeyOriginInfo &info) const = 0; KeyOriginInfo &info) const = 0;
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class OriginPubkeyProvider final : public PubkeyProvider { class OriginPubkeyProvider final : public PubkeyProvider {
KeyOriginInfo m_origin; KeyOriginInfo m_origin;
std::unique_ptr<PubkeyProvider> m_provider; std::unique_ptr<PubkeyProvider> m_provider;
std::string OriginString() const { std::string OriginString() const {
return HexStr(std::begin(m_origin.fingerprint), return HexStr(std::begin(m_origin.fingerprint),
std::end(m_origin.fingerprint)) + std::end(m_origin.fingerprint)) +
FormatKeyPath(m_origin.path); FormatHDKeypath(m_origin.path);
} }
public: public:
OriginPubkeyProvider(KeyOriginInfo info, OriginPubkeyProvider(KeyOriginInfo info,
std::unique_ptr<PubkeyProvider> provider) std::unique_ptr<PubkeyProvider> provider)
: m_origin(std::move(info)), m_provider(std::move(provider)) {} : m_origin(std::move(info)), m_provider(std::move(provider)) {}
bool GetPubKey(int pos, const SigningProvider &arg, CPubKey *key, bool GetPubKey(int pos, const SigningProvider &arg, CPubKey *key,
KeyOriginInfo &info) const override { KeyOriginInfo &info) const override {
▲ Show 20 Lines • Show All 139 Lines • ▼ Show 20 Lines bool GetPubKey(int pos, const SigningProvider &arg, CPubKey *key,
info.path.push_back(uint32_t(pos)); info.path.push_back(uint32_t(pos));
} }
if (m_derive == DeriveType::HARDENED) { if (m_derive == DeriveType::HARDENED) {
info.path.push_back(uint32_t(pos) | 0x80000000L); info.path.push_back(uint32_t(pos) | 0x80000000L);
} }
return true; return true;
} }
std::string ToString() const override { std::string ToString() const override {
std::string ret = EncodeExtPubKey(m_extkey) + FormatKeyPath(m_path); std::string ret = EncodeExtPubKey(m_extkey) + FormatHDKeypath(m_path);
if (IsRange()) { if (IsRange()) {
ret += "/*"; ret += "/*";
if (m_derive == DeriveType::HARDENED) { if (m_derive == DeriveType::HARDENED) {
ret += '\''; ret += '\'';
} }
} }
return ret; return ret;
} }
bool ToPrivateString(const SigningProvider &arg, bool ToPrivateString(const SigningProvider &arg,
std::string &out) const override { std::string &out) const override {
CExtKey key; CExtKey key;
if (!GetExtKey(arg, key)) { if (!GetExtKey(arg, key)) {
return false; return false;
} }
out = EncodeExtKey(key) + FormatKeyPath(m_path); out = EncodeExtKey(key) + FormatHDKeypath(m_path);
if (IsRange()) { if (IsRange()) {
out += "/*"; out += "/*";
if (m_derive == DeriveType::HARDENED) { if (m_derive == DeriveType::HARDENED) {
out += '\''; out += '\'';
} }
} }
return true; return true;
} }
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