diff options
Diffstat (limited to 'src/script')
| -rw-r--r-- | src/script/descriptor.cpp | 58 | ||||
| -rw-r--r-- | src/script/descriptor.h | 2 |
2 files changed, 35 insertions, 25 deletions
diff --git a/src/script/descriptor.cpp b/src/script/descriptor.cpp index 31fdafa88f..682b55742a 100644 --- a/src/script/descriptor.cpp +++ b/src/script/descriptor.cpp @@ -181,7 +181,7 @@ public: virtual bool ToPrivateString(const SigningProvider& arg, std::string& out) const = 0; /** Get the descriptor string form with the xpub at the last hardened derivation */ - virtual bool ToNormalizedString(const SigningProvider& arg, std::string& out) const = 0; + virtual bool ToNormalizedString(const SigningProvider& arg, std::string& out, const DescriptorCache* cache = nullptr) const = 0; /** Derive a private key, if private data is available in arg. */ virtual bool GetPrivKey(int pos, const SigningProvider& arg, CKey& key) const = 0; @@ -216,10 +216,10 @@ public: ret = "[" + OriginString() + "]" + std::move(sub); return true; } - bool ToNormalizedString(const SigningProvider& arg, std::string& ret) const override + bool ToNormalizedString(const SigningProvider& arg, std::string& ret, const DescriptorCache* cache) const override { std::string sub; - if (!m_provider->ToNormalizedString(arg, sub)) return false; + if (!m_provider->ToNormalizedString(arg, sub, cache)) return false; // If m_provider is a BIP32PubkeyProvider, we may get a string formatted like a OriginPubkeyProvider // In that case, we need to strip out the leading square bracket and fingerprint from the substring, // and append that to our own origin string. @@ -263,7 +263,7 @@ public: ret = EncodeSecret(key); return true; } - bool ToNormalizedString(const SigningProvider& arg, std::string& ret) const override + bool ToNormalizedString(const SigningProvider& arg, std::string& ret, const DescriptorCache* cache) const override { ret = ToString(); return true; @@ -412,7 +412,7 @@ public: } return true; } - bool ToNormalizedString(const SigningProvider& arg, std::string& out) const override + bool ToNormalizedString(const SigningProvider& arg, std::string& out, const DescriptorCache* cache) const override { // For hardened derivation type, just return the typical string, nothing to normalize if (m_derive == DeriveType::HARDENED) { @@ -431,29 +431,39 @@ public: out = ToString(); return true; } - // Derive the xpub at the last hardened step - CExtKey xprv; - if (!GetExtKey(arg, xprv)) return false; + // Get the path to the last hardened stup KeyOriginInfo origin; int k = 0; for (; k <= i; ++k) { - // Derive - xprv.Derive(xprv, m_path.at(k)); // Add to the path origin.path.push_back(m_path.at(k)); - // First derivation element, get the fingerprint for origin - if (k == 0) { - std::copy(xprv.vchFingerprint, xprv.vchFingerprint + 4, origin.fingerprint); - } } // Build the remaining path KeyPath end_path; for (; k < (int)m_path.size(); ++k) { end_path.push_back(m_path.at(k)); } + // Get the fingerprint + CKeyID id = m_root_extkey.pubkey.GetID(); + std::copy(id.begin(), id.begin() + 4, origin.fingerprint); + + CExtPubKey xpub; + CExtKey lh_xprv; + // If we have the cache, just get the parent xpub + if (cache != nullptr) { + cache->GetCachedLastHardenedExtPubKey(m_expr_index, xpub); + } + if (!xpub.pubkey.IsValid()) { + // Cache miss, or nor cache, or need privkey + CExtKey xprv; + if (!GetDerivedExtKey(arg, xprv, lh_xprv)) return false; + xpub = lh_xprv.Neuter(); + } + assert(xpub.pubkey.IsValid()); + // Build the string std::string origin_str = HexStr(origin.fingerprint) + FormatHDKeypath(origin.path); - out = "[" + origin_str + "]" + EncodeExtPubKey(xprv.Neuter()) + FormatHDKeypath(end_path); + out = "[" + origin_str + "]" + EncodeExtPubKey(xpub) + FormatHDKeypath(end_path); if (IsRange()) { out += "/*"; assert(m_derive == DeriveType::UNHARDENED); @@ -533,19 +543,19 @@ public: return false; } - virtual bool ToStringSubScriptHelper(const SigningProvider* arg, std::string& ret, const StringType type) const + virtual bool ToStringSubScriptHelper(const SigningProvider* arg, std::string& ret, const StringType type, const DescriptorCache* cache = nullptr) const { size_t pos = 0; for (const auto& scriptarg : m_subdescriptor_args) { if (pos++) ret += ","; std::string tmp; - if (!scriptarg->ToStringHelper(arg, tmp, type)) return false; + if (!scriptarg->ToStringHelper(arg, tmp, type, cache)) return false; ret += std::move(tmp); } return true; } - bool ToStringHelper(const SigningProvider* arg, std::string& out, const StringType type) const + bool ToStringHelper(const SigningProvider* arg, std::string& out, const StringType type, const DescriptorCache* cache = nullptr) const { std::string extra = ToStringExtra(); size_t pos = extra.size() > 0 ? 1 : 0; @@ -555,7 +565,7 @@ public: std::string tmp; switch (type) { case StringType::NORMALIZED: - if (!pubkey->ToNormalizedString(*arg, tmp)) return false; + if (!pubkey->ToNormalizedString(*arg, tmp, cache)) return false; break; case StringType::PRIVATE: if (!pubkey->ToPrivateString(*arg, tmp)) return false; @@ -567,7 +577,7 @@ public: ret += std::move(tmp); } std::string subscript; - if (!ToStringSubScriptHelper(arg, subscript, type)) return false; + if (!ToStringSubScriptHelper(arg, subscript, type, cache)) return false; if (pos && subscript.size()) ret += ','; out = std::move(ret) + std::move(subscript) + ")"; return true; @@ -587,9 +597,9 @@ public: return ret; } - bool ToNormalizedString(const SigningProvider& arg, std::string& out) const override final + bool ToNormalizedString(const SigningProvider& arg, std::string& out, const DescriptorCache* cache) const override final { - bool ret = ToStringHelper(&arg, out, StringType::NORMALIZED); + bool ret = ToStringHelper(&arg, out, StringType::NORMALIZED, cache); out = AddChecksum(out); return ret; } @@ -843,7 +853,7 @@ protected: out.tr_spenddata[output].Merge(builder.GetSpendData()); return Vector(GetScriptForDestination(output)); } - bool ToStringSubScriptHelper(const SigningProvider* arg, std::string& ret, const StringType type) const override + bool ToStringSubScriptHelper(const SigningProvider* arg, std::string& ret, const StringType type, const DescriptorCache* cache = nullptr) const override { if (m_depths.empty()) return true; std::vector<bool> path; @@ -854,7 +864,7 @@ protected: path.push_back(false); } std::string tmp; - if (!m_subdescriptor_args[pos]->ToStringHelper(arg, tmp, type)) return false; + if (!m_subdescriptor_args[pos]->ToStringHelper(arg, tmp, type, cache)) return false; ret += std::move(tmp); while (!path.empty() && path.back()) { if (path.size() > 1) ret += '}'; diff --git a/src/script/descriptor.h b/src/script/descriptor.h index 8379905660..ecd7c4eea5 100644 --- a/src/script/descriptor.h +++ b/src/script/descriptor.h @@ -115,7 +115,7 @@ struct Descriptor { virtual bool ToPrivateString(const SigningProvider& provider, std::string& out) const = 0; /** Convert the descriptor to a normalized string. Normalized descriptors have the xpub at the last hardened step. This fails if the provided provider does not have the private keys to derive that xpub. */ - virtual bool ToNormalizedString(const SigningProvider& provider, std::string& out) const = 0; + virtual bool ToNormalizedString(const SigningProvider& provider, std::string& out, const DescriptorCache* cache = nullptr) const = 0; /** Expand a descriptor at a specified position. * |