Recover.c

/**
 * recover.c
 *
 * Computer Science 50
 * Problem Set 4
 *
 * Recovers JPEGs from a forensic image.
 */

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

int main(int argc, char* argv[])
{
    //open the card
    FILE* file = fopen("card.raw", "r");
    //establish the image pointer
    FILE* img;

    //create checks and balances
    int jpegNum = 000;
    int jpegOpen = 0;
    int* buffer[512];

    char title[10];

    //give memory to the buffer.
    //buffer.store = malloc(sizeof(int)*512);

    //do a loop-the-loop through the card data
    while(fread(&buffer, 1, 512, file) == 512)
    {
        //iz jpeg? yes:
        if(*buffer[0] == 0xff && *buffer[1] == 0xd8 && *buffer[2] == 0xff && (*buffer[3] == 0xe0 || *buffer[3] == 0xe1))
        {
            //does I have jpeg? yes:
            if(jpegOpen == 0)
            {
                sprintf(title, "%d.jpg", jpegNum);
                jpegNum++;
                img = fopen(title, "a");
                jpegOpen = 1;
            }

            //does I have jpeg? no:
            else
            {
                fclose(img);
                jpegOpen = 0;
                sprintf(title, "%d.jpg", jpegNum);
                jpegNum++;
                img = fopen(title, "a");
                jpegOpen = 1;
            }
        }

        //iz no jpeg
        if(jpegOpen == 1)
        {
            fwrite(&buffer, 1, 512, img);
        }

        else
        {
            //do nothing
        }
    }

    //thx for the pics
    fclose(file);
    fclose(img);

    //I haz no jpeg
    jpegOpen = 0;

    //kthxbye
    return 0;

}