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Abstract out IsSegWitOutput from utxoupdatepsbt

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This is not a pure refactor; additional functionality is added in
IsSegWitOutput which lets it recurse into P2SH when a
SigningProvider is provided that knows about the inner script.
This commit is contained in:
Pieter Wuille
2019-02-16 14:18:54 -08:00
parent e79bbb73e0
commit eaf4f88734
3 changed files with 20 additions and 3 deletions
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16
src/script/sign.cpp
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@@ -505,3 +505,19 @@ FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvide
ret.origins.insert(b.origins.begin(), b.origins.end());
return ret;
}
bool IsSegWitOutput(const SigningProvider& provider, const CScript& script)
{
std::vector<valtype> solutions;
auto whichtype = Solver(script, solutions);
if (whichtype == TX_WITNESS_V0_SCRIPTHASH || whichtype == TX_WITNESS_V0_KEYHASH || whichtype == TX_WITNESS_UNKNOWN) return true;
if (whichtype == TX_SCRIPTHASH) {
auto h160 = uint160(solutions[0]);
CScript subscript;
if (provider.GetCScript(h160, subscript)) {
whichtype = Solver(subscript, solutions);
if (whichtype == TX_WITNESS_V0_SCRIPTHASH || whichtype == TX_WITNESS_V0_KEYHASH || whichtype == TX_WITNESS_UNKNOWN) return true;
}
}
return false;
}