Shell Programming and Scripting

Hello Chubler_XL,

I've added the fflush(stdout) after several printf lines within the code and now the program processes 373 more blocks.
Before the addition of flush it stopped in the block 581,524 and now, with the flush, stops in block 581,897.

It seems that is not related with the size of the blocks, more it seems that is accumulating memory or something and when
reaches the limit, stops.

Maybe you can see if something could be fixed to avoid this issue.

Thanks for all help so far.

Hello Chubler_XL,

I've generated a debug file of 1KB from last 3rd block before program crashes and if a run the C program over that debug file, doesn't print anything.

Maybe you or somebody could know why could stops the program.

Thanks in advance.

In function remover_fs you don't malloc enough memory for the string (You need 1 extra char for the null terminator).

My advice is to not allocate any memory and just print the output as required.

Try this replacement function:

Code:

void remover_fs (const unsigned char * ptr, unsigned int len)
{
    unsigned int i;


    for (i = 0; i < len; i++)
    {
        if ((ptr[i] >> 4) != 0xf)
        {
            printf ("%01x", ptr[i] >> 4);
        }
        if ((ptr[i] & 0xf) != 0xf)
        {
            printf ("%01x", ptr[i] & 0xf);
        }
    }
    printf("|");
    return;
}

Hello Chubler_XL,

It works this time!!! Many thanks for your help!!!

After change the function with the code you posted, the script didn't stop, and I'm not sure, but it seems processed all blocks within binary.

Some minor issue only because when one pattern begins with 0x83 is printing one byte less.

Really thanks ahamed and Chubler_XL for the great help and time!

Regards