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Add multi_a descriptor inference

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This commit is contained in:
Pieter Wuille 2022-01-11 12:02:12 -05:00
parent 79728c4a3d
commit 3eed6fca57
1 changed files with 20 additions and 0 deletions
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20
src/script/descriptor.cpp
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@ -1287,6 +1287,21 @@ std::unique_ptr<PubkeyProvider> InferXOnlyPubkey(const XOnlyPubKey& xkey, ParseS
return key_provider; return key_provider;
} }
std::unique_ptr<DescriptorImpl> InferMultiA(const CScript& script, ParseScriptContext ctx, const SigningProvider& provider)
{
auto match = MatchMultiA(script);
if (!match) return {};
std::vector<std::unique_ptr<PubkeyProvider>> keys;
keys.reserve(match->second.size());
for (const auto keyspan : match->second) {
if (keyspan.size() != 32) return {};
auto key = InferXOnlyPubkey(XOnlyPubKey{keyspan}, ctx, provider);
if (!key) return {};
keys.push_back(std::move(key));
}
return std::make_unique<MultiADescriptor>(match->first, std::move(keys));
}
std::unique_ptr<DescriptorImpl> InferScript(const CScript& script, ParseScriptContext ctx, const SigningProvider& provider) std::unique_ptr<DescriptorImpl> InferScript(const CScript& script, ParseScriptContext ctx, const SigningProvider& provider)
{ {
if (ctx == ParseScriptContext::P2TR && script.size() == 34 && script[0] == 32 && script[33] == OP_CHECKSIG) { if (ctx == ParseScriptContext::P2TR && script.size() == 34 && script[0] == 32 && script[33] == OP_CHECKSIG) {
@ -1294,6 +1309,11 @@ std::unique_ptr<DescriptorImpl> InferScript(const CScript& script, ParseScriptCo
return std::make_unique<PKDescriptor>(InferXOnlyPubkey(key, ctx, provider)); return std::make_unique<PKDescriptor>(InferXOnlyPubkey(key, ctx, provider));
} }
if (ctx == ParseScriptContext::P2TR) {
auto ret = InferMultiA(script, ctx, provider);
if (ret) return ret;
}
std::vector<std::vector<unsigned char>> data; std::vector<std::vector<unsigned char>> data;
TxoutType txntype = Solver(script, data); TxoutType txntype = Solver(script, data);