recover

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>

typedef uint8_t  BYTE;

typedef struct {
    BYTE out;
}__attribute__((__packed__))
outf;

int main(int argc, char *argv[])
{
    if(argc != 2) {
        fprintf(stderr, "Usage: %s forensic_file \n", argv[0]);
        return 1;
    }

    FILE *img = fopen(argv[1], "r");

    if(img == NULL) {
        fprintf(stderr, "Could not open\n");
        return 2;
    }

    FILE *out;
    int count = 0;

    while(1) {

        outf * C = malloc(sizeof(outf) * 512);
        size_t n = fread(C, sizeof(BYTE), 512, img);

        char filename[10];

        if((int)C[0].out == 0xff && (int)C[1].out == 0xd8 && (int)C[2].out == 0xff && ((int)C[3].out & 0xf0) == 0xe0) {
            if(count == 0) {
                sprintf(filename, "%03i.jpg", count);
                out = fopen(filename,"w");
                fwrite(C, 1, 512, out);
                count ++;
              //  free(C);
            } else {
                fclose(out);
                sprintf(filename, "%03i.jpg", count);
                out = fopen(filename,"w");
                fwrite(C, 1, 512, out);
                count ++;
             //   free(C);
            }
        } else if(count != 0) {
            fwrite(C, 512, 1, out);
           // free(C);
        }
        if(n != 512) {
            fclose (out);
            fclose(img);
            free(C);
            break;
        }
        free(C);
    }
    return  0;
}