Altera Quartus (.jic to .pof)

The binary image can be extracted from the .jic file. I'm doing it like below

   struct
   {
        unsigned short typ;
        unsigned len;
   } jicrechdr;
    finput = fopen(filename,"rb");
    fread(buffer,1,12,finput);
    while (!feof(finput))
    {
        fread(&jicrechdr,1,6,finput);
        if (jicrechdr.typ != 0x1c)
            fseek(finput,jicrechdr.len,SEEK_CUR);
        else
            break;
    }
    if (feof(finput))
        exit(1);
    fseek(finput,jicrechdr.len & 0xff,SEEK_CUR);
    imagesize = jicrechdr.len & 0xffffff00;
    // read binary image