Function getScriptFromDescriptor

src/rpc/mining.cpp:202–234

}

static bool getScriptFromDescriptor(const std::string& descriptor, CScript& script, std::string& error)
{
    FlatSigningProvider key_provider;
    const auto desc = Parse(descriptor, key_provider, error, /* require_checksum = */ false);
    if (desc) {
        if (desc->IsRange()) {
            throw JSONRPCError(RPC_INVALID_PARAMETER, "Ranged descriptor not accepted. Maybe pass through deriveaddresses first?");
        }

        FlatSigningProvider provider;
        std::vector<CScript> scripts;
        if (!desc->Expand(0, key_provider, scripts, provider)) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Cannot derive script without private keys");
        }

        // Combo descriptors can have 2 or 4 scripts, so we can't just check scripts.size() == 1
        CHECK_NONFATAL(scripts.size() > 0 && scripts.size() <= 4);

        if (scripts.size() == 1) {
            script = scripts.at(0);
        } else if (scripts.size() == 4) {
            // For uncompressed keys, take the 3rd script, since it is p2wpkh
            script = scripts.at(2);
        } else {
            // Else take the 2nd script, since it is p2pkh
            script = scripts.at(1);
        }

        return true;
    } else {
        return false;
    }
}

static RPCHelpMan generatetodescriptor()
{