wallet, rpc: Only allow keypool import from single key descriptors

Legacy wallets should only import keys to the keypool if they came in a
single key descriptor. Instead of relying on assumptions about the
descriptor based on how many pubkeys show up after expanding the
descriptor, explicitly mark descriptors as being single key type and use
that for the check.
This commit is contained in:
Ava Chow
2024-01-22 19:00:31 -05:00
parent 99a4ddf5ab
commit 0ff072caa1
4 changed files with 26 additions and 2 deletions

View File

@@ -800,6 +800,7 @@ public:
return OutputTypeFromDestination(m_destination);
}
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return false; }
bool ToPrivateString(const SigningProvider& arg, std::string& out) const final { return false; }
std::optional<int64_t> ScriptSize() const override { return GetScriptForDestination(m_destination).size(); }
@@ -827,6 +828,7 @@ public:
return OutputTypeFromDestination(dest);
}
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return false; }
bool ToPrivateString(const SigningProvider& arg, std::string& out) const final { return false; }
std::optional<int64_t> ScriptSize() const override { return m_script.size(); }
@@ -855,6 +857,7 @@ protected:
public:
PKDescriptor(std::unique_ptr<PubkeyProvider> prov, bool xonly = false) : DescriptorImpl(Vector(std::move(prov)), "pk"), m_xonly(xonly) {}
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return true; }
std::optional<int64_t> ScriptSize() const override {
return 1 + (m_xonly ? 32 : m_pubkey_args[0]->GetSize()) + 1;
@@ -891,6 +894,7 @@ public:
PKHDescriptor(std::unique_ptr<PubkeyProvider> prov) : DescriptorImpl(Vector(std::move(prov)), "pkh") {}
std::optional<OutputType> GetOutputType() const override { return OutputType::LEGACY; }
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return true; }
std::optional<int64_t> ScriptSize() const override { return 1 + 1 + 1 + 20 + 1 + 1; }
@@ -925,6 +929,7 @@ public:
WPKHDescriptor(std::unique_ptr<PubkeyProvider> prov) : DescriptorImpl(Vector(std::move(prov)), "wpkh") {}
std::optional<OutputType> GetOutputType() const override { return OutputType::BECH32; }
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return true; }
std::optional<int64_t> ScriptSize() const override { return 1 + 1 + 20; }
@@ -967,6 +972,7 @@ protected:
public:
ComboDescriptor(std::unique_ptr<PubkeyProvider> prov) : DescriptorImpl(Vector(std::move(prov)), "combo") {}
bool IsSingleType() const final { return false; }
bool IsSingleKey() const final { return true; }
std::unique_ptr<DescriptorImpl> Clone() const override
{
return std::make_unique<ComboDescriptor>(m_pubkey_args.at(0)->Clone());
@@ -991,6 +997,7 @@ protected:
public:
MultisigDescriptor(int threshold, std::vector<std::unique_ptr<PubkeyProvider>> providers, bool sorted = false) : DescriptorImpl(std::move(providers), sorted ? "sortedmulti" : "multi"), m_threshold(threshold), m_sorted(sorted) {}
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return false; }
std::optional<int64_t> ScriptSize() const override {
const auto n_keys = m_pubkey_args.size();
@@ -1042,6 +1049,7 @@ protected:
public:
MultiADescriptor(int threshold, std::vector<std::unique_ptr<PubkeyProvider>> providers, bool sorted = false) : DescriptorImpl(std::move(providers), sorted ? "sortedmulti_a" : "multi_a"), m_threshold(threshold), m_sorted(sorted) {}
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return false; }
std::optional<int64_t> ScriptSize() const override {
const auto n_keys = m_pubkey_args.size();
@@ -1088,6 +1096,7 @@ public:
return OutputType::LEGACY;
}
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return m_subdescriptor_args[0]->IsSingleKey(); }
std::optional<int64_t> ScriptSize() const override { return 1 + 1 + 20 + 1; }
@@ -1129,6 +1138,7 @@ public:
WSHDescriptor(std::unique_ptr<DescriptorImpl> desc) : DescriptorImpl({}, std::move(desc), "wsh") {}
std::optional<OutputType> GetOutputType() const override { return OutputType::BECH32; }
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return m_subdescriptor_args[0]->IsSingleKey(); }
std::optional<int64_t> ScriptSize() const override { return 1 + 1 + 32; }
@@ -1207,6 +1217,7 @@ public:
}
std::optional<OutputType> GetOutputType() const override { return OutputType::BECH32M; }
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return false; }
std::optional<int64_t> ScriptSize() const override { return 1 + 1 + 32; }
@@ -1334,6 +1345,7 @@ public:
bool IsSolvable() const override { return true; }
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return false; }
std::optional<int64_t> ScriptSize() const override { return m_node->ScriptSize(); }
@@ -1373,6 +1385,7 @@ public:
RawTRDescriptor(std::unique_ptr<PubkeyProvider> output_key) : DescriptorImpl(Vector(std::move(output_key)), "rawtr") {}
std::optional<OutputType> GetOutputType() const override { return OutputType::BECH32M; }
bool IsSingleType() const final { return true; }
bool IsSingleKey() const final { return false; }
std::optional<int64_t> ScriptSize() const override { return 1 + 1 + 32; }