nftables_nft.h

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/*
 * Copyright (C) 2026 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef ALLOCD_NET_NFTABLES_NFT_H_
#define ALLOCD_NET_NFTABLES_NFT_H_
 
#include <stdint.h>
 
#include <string>
#include <string_view>
 
#include "allocd/net/nftables.h"
#include "cuttlefish/result/result.h"
 
namespace cuttlefish {
 
class NftablesNft : public Nftables {
 public:
  NftablesNft() = default;
  ~NftablesNft() override = default;
 
  // Returns the resolved path to the `nft` binary, or an error if it is not
  // available. Static so callers can probe for nft support without having to
  // construct an instance.
  static Result<std::string> BinaryPath();
 
  Result<void> EnsureTable(std::string_view family,
                           std::string_view table) override;
  Result<void> DeleteTable(std::string_view family,
                           std::string_view table) override;
  Result<void> EnsureChain(std::string_view family, std::string_view table,
                           std::string_view chain,
                           std::string_view content) override;
  Result<uint64_t> AddRule(std::string_view family, std::string_view table,
                           std::string_view chain, std::string_view content,
                           std::string_view comment) override;
  Result<void> DeleteRule(std::string_view family, std::string_view table,
                          std::string_view chain, uint64_t handle) override;
  Result<void> DeleteRulesByComment(std::string_view family,
                                    std::string_view table,
                                    std::string_view chain,
                                    std::string_view comment) override;
};
 
}  // namespace cuttlefish
 
#endif  // ALLOCD_NET_NFTABLES_NFT_H_