CTxDestination AddAndGetDestinationForScript(CKeyStore& keystore, const CScript& script, OutputType type)
{
// Add script to keystore
keystore.AddCScript(script);
// Note that scripts over 520 bytes are not yet supported.
switch (type) {
case OutputType::LEGACY:
return CScriptID(script);
case OutputType::P2SH_SEGWIT:
case OutputType::BECH32: {
CTxDestination witdest = WitnessV0ScriptHash(script);
CScript witprog = GetScriptForDestination(witdest);
// Check if the resulting program is solvable (i.e. doesn't use an uncompressed key)
if (!IsSolvable(keystore, witprog)) return CScriptID(script);
// Add the redeemscript, so that P2WSH and P2SH-P2WSH outputs are recognized as ours.
keystore.AddCScript(witprog);
if (type == OutputType::BECH32) {
return witdest;
} else {
return CScriptID(witprog);
}
}
default: assert(false);
}
}
UniValue getdescriptorinfo(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() != 1) {
throw std::runtime_error(
RPCHelpMan{"getdescriptorinfo",
{"\nAnalyses a descriptor.\n"},
{
{"descriptor", RPCArg::Type::STR, RPCArg::Optional::NO, "The descriptor."},
},
RPCResult{
"{\n"
" \"descriptor\" : \"desc\", (string) The descriptor in canonical form, without private keys\n"
" \"isrange\" : true|false, (boolean) Whether the descriptor is ranged\n"
" \"issolvable\" : true|false, (boolean) Whether the descriptor is solvable\n"
" \"hasprivatekeys\" : true|false, (boolean) Whether the input descriptor contained at least one private key\n"
"}\n"
},
RPCExamples{
"Analyse a descriptor\n" +
HelpExampleCli("getdescriptorinfo", "\"wpkh([d34db33f/84h/0h/0h]0279be667ef9dcbbac55a06295Ce870b07029Bfcdb2dce28d959f2815b16f81798)\"")
}}.ToString()
);
}
RPCTypeCheck(request.params, {UniValue::VSTR});
FlatSigningProvider provider;
auto desc = Parse(request.params[0].get_str(), provider);
if (!desc) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Invalid descriptor"));
}
UniValue result(UniValue::VOBJ);
result.pushKV("descriptor", desc->ToString());
result.pushKV("isrange", desc->IsRange());
result.pushKV("issolvable", desc->IsSolvable());
result.pushKV("hasprivatekeys", provider.keys.size() > 0);
return result;
}
