Function ProcessImportDescriptor

src/wallet/rpc/backup.cpp:1093–1180

}

static UniValue ProcessImportDescriptor(ImportData& import_data, std::map<CKeyID, CPubKey>& pubkey_map, std::map<CKeyID, CKey>& privkey_map, std::set<CScript>& script_pub_keys, bool& have_solving_data, const UniValue& data, std::vector<CKeyID>& ordered_pubkeys)
{
    UniValue warnings(UniValue::VARR);

    const std::string& descriptor = data["desc"].get_str();
    FlatSigningProvider keys;
    std::string error;
    auto parsed_desc = Parse(descriptor, keys, error, /* require_checksum = */ true);
    if (!parsed_desc) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, error);
    }
    if (parsed_desc->GetOutputType() == OutputType::BECH32M) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Bech32m descriptors cannot be imported into legacy wallets");
    }

    have_solving_data = parsed_desc->IsSolvable();
    const bool watch_only = data.exists("watchonly") ? data["watchonly"].get_bool() : false;

    int64_t range_start = 0, range_end = 0;
    if (!parsed_desc->IsRange() && data.exists("range")) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, "Range should not be specified for an un-ranged descriptor");
    } else if (parsed_desc->IsRange()) {
        if (!data.exists("range")) {
            throw JSONRPCError(RPC_INVALID_PARAMETER, "Descriptor is ranged, please specify the range");
        }
        std::tie(range_start, range_end) = ParseDescriptorRange(data["range"]);
    }

    const UniValue& priv_keys = data.exists("keys") ? data["keys"].get_array() : UniValue();

    // Expand all descriptors to get public keys and scripts, and private keys if available.
    for (int i = range_start; i <= range_end; ++i) {
        FlatSigningProvider out_keys;
        std::vector<CScript> scripts_temp;
        parsed_desc->Expand(i, keys, scripts_temp, out_keys);
        std::copy(scripts_temp.begin(), scripts_temp.end(), std::inserter(script_pub_keys, script_pub_keys.end()));
        for (const auto& key_pair : out_keys.pubkeys) {
            ordered_pubkeys.push_back(key_pair.first);
        }

        for (const auto& x : out_keys.scripts) {
            import_data.import_scripts.emplace(x.second);
        }

        parsed_desc->ExpandPrivate(i, keys, out_keys);

        std::copy(out_keys.pubkeys.begin(), out_keys.pubkeys.end(), std::inserter(pubkey_map, pubkey_map.end()));
        std::copy(out_keys.keys.begin(), out_keys.keys.end(), std::inserter(privkey_map, privkey_map.end()));
        import_data.key_origins.insert(out_keys.origins.begin(), out_keys.origins.end());
    }

    for (size_t i = 0; i < priv_keys.size(); ++i) {
        const auto& str = priv_keys[i].get_str();
        CKey key = DecodeSecret(str);
        if (!key.IsValid()) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key encoding");
        }
        CPubKey pubkey = key.GetPubKey();