Decryptor/App/UntrustedInclude/FileIO.h

//
// Created by miti on 21/07/19.
//

#ifndef DECRYPTORAPP_FILEIO_H
#define DECRYPTORAPP_FILEIO_H


// For reading from/writing to file -sealing.
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdint.h> // For uint8_t* as argument.
#include <unistd.h> // For lseek
#include <stdio.h> // For fopen

namespace FileIO {
    int write_to_filename(char* filename, uint8_t* msg, size_t* expected_msg_length);

    int read_from_filename(char* filename, uint8_t* msg, size_t* expected_msg_length);

    int write_to_fd(int fd, uint8_t* msg, size_t* expected_msg_length);

    int read_from_fd(int fd, uint8_t* msg, size_t* expected_msg_length);

    size_t check_if_file_exists_return_size(char* filename);
};


#endif //DECRYPTORAPP_FILEIO_H