OpenEuphoria

Re: Patching distributed EXE's

• Posted by Chris Bensler <bensler at MAILOPS.COM> Jan 25, 2001
• 518 views

Hehe..

  I've tried similar things b4, for learning reasons, but the binaries
never work afterwards.. I don't know enough about the ins and outs of exe's
to acheive this.
  Other than the limitations on compiled binary string sizes, I know
nothing about it..

  I could write the anylzer and delta progs, but I wouldn't be able to take
into account binary formatting..
What if I did the anylzer and delta, and you could work in the nuances that
the binaries would have to follow?

Chris



On Wed, 24 Jan 2001 16:09:18 -0800, George Henry <ghenryca at LYCOS.COM> wrote:

>Hi Chris,
>
>Write a program that analyzes the difference between two files and outputs
a set of instructions for transforming one into the other - a "delta file".
Then write another program to execute those instructions. Ha ha, easier
said than done, esp. with binary files, but wouldn't it be a good exercise?
Something you could contribute to the archives, too. (This is on *my* to do
list - when I get around to it, which of course may be never.)
>
>George
>
>--
>
>On Wed, 24 Jan 2001 13:25:29
> Chris Bensler wrote:
>>hi,
>>
>>   I know I can modify the binary, but I don't like that idea. Not that I
>>have any particular need for it now, but in the future, if I want to
>>distribute an exe, and by chance it contains an error. I would like to be
>>able to fix it without the user having to download the entire file again,
>>or something of similar size. I'm wondering if there's a way to re-include
>>a source file that contains the bug fix without having to recompile the
>>exe. Or will the patch just end up being too big? Would I have to include
>>the compiler to do so?
>>Do I make sense? LOL
>>
>>Chris
>>
>>Kat wrote:
>>
>>>On 24 Jan 2001, at 12:18, chris bensler wrote:
>>>
>>>> Hi all,
>>>>
>>>>   Just curious, is it possible to patch an EXE file created with EU?
>>>
>>>Depends on what you mean by "patch". Since everything is a file of bytes,
>>>you can always replace bytes, but the code may or maynot do what you
>>>expect afterwards. Just look at microsoft, they haveto send out patches
>>>*all* the time.
>>>
>>>Kat
>>
>
>
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