can someone tell me what is wrong with my code it works and recovers but no images are found upon checking :) recover.c exists. :) recover.c compiles. :) handles lack of forensic image :( recovers 000.jpg correctly 000.jpg not found :( recovers middle images correctly 001.jpg not found :( recovers 049.jpg correctly 049.jpg not found
#define block_size 512
int main(int argc, char *argv[])
{
// check the user uses program correctly
if (argc != 2)
{
printf("Usage ./recover image\n");
return 1;
}
// open memory card file
FILE *file = fopen(argv[1], "r");
// check
if (file == NULL)
{
return 1;
}
// declare variables
typedef uint8_t BYTE; // variables BYTE
// reading a block of 512 in memory card
BYTE buffer[block_size];
FILE *current_file = NULL;
char file_name[100];
bool first_JPEG = false;
size_t read_bytes;
int file_count = 0;
bool already_found = false;
// repeat until end of card
while (true)
{
// read 512 bytes into a buffer
read_bytes = fread(buffer, sizeof(BYTE), block_size, file);
if (read_bytes == 0)
{
break;
}
// if start of a new JPEG
if (buffer[0] == 0xff && buffer[1] == 0xd8 && buffer[2] == 0xff && (buffer[3] & 0xf0) == 0xe0)
{
already_found = true;
// if first JPEG
if (!first_JPEG)
{
first_JPEG = true;
}
else
{
// close currnt file
fclose(current_file);
}
// open new file and start writing
sprintf(file_name, "%03i.jpeg", file_count);
current_file = fopen(file_name, "w");
fwrite(buffer, sizeof(BYTE), read_bytes, current_file);
file_count++;
}
else
{
// If aleady found
if (already_found)
{
// continue writing
fwrite(buffer, sizeof(BYTE), read_bytes, current_file);
}
}
}
// close any remaining files
fclose(file);
fclose(current_file);
return 0;
}
