avb_manager.h

/*
 * Copyright 2016 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 AVB_MANAGER_H_
#define AVB_MANAGER_H_

extern "C" {

#include <stdio.h>

}  // extern C

#include <UniquePtr.h>

#include "avb_messages.h"
#include "secure_storage_interface.h"

#define LOG_TAG "avb"

#define TLOGE(fmt, ...) \
  fprintf(stderr, "%s:%s:%d: " fmt, LOG_TAG, __func__, __LINE__, ##__VA_ARGS__)
#define TLOGI(fmt, ...) \
  fprintf(stdout, "%s:%s:%d: " fmt, LOG_TAG, __func__, __LINE__, ##__VA_ARGS__)
#define TLOGD(fmt, ...)         \
  while (0) {                   \
    if (DEBUG) {                \
      fprintf(stdout,           \
              "%s:%s:%d: " fmt, \
              LOG_TAG,          \
              __func__,         \
              __LINE__,         \
              ##__VA_ARGS__);   \
    }                           \
  }

extern const unsigned int kRollbackSlotMax;

namespace avb {

// Implements request callbacks
class AvbManager {
 public:
  // AvbManager takes ownership of |storage|, so |storage| will be deleted
  // when AvbManager is destructed.
  AvbManager(SecureStorageInterface* storage) : storage_(storage) {}

  void ReadRollbackIndex(const RollbackIndexRequest& request,
                         RollbackIndexResponse* response);
  void WriteRollbackIndex(const RollbackIndexRequest& request,
                          RollbackIndexResponse* response);
  // Client is responsible for managing versioning, by sending an initial
  // "GetVersion" request. Note this means that the "GetVersion" request cannot
  // be versioned.
  void GetVersion(const GetVersionRequest& request,
                  GetVersionResponse* response);

 private:
  UniquePtr<SecureStorageInterface> storage_;
};

}  // namespace avb

#endif  // AVB_MANAGER_H_