Hi All

Can I hide the code and deliver the shell script so that nobody else can
change or view that.

Thanks in advance for the answer.
Gianluca

On 2005-07-19 16:02:59 -0500, "Gianluca S." <gianluca2@email.it> said:

> Hi All
>
> Can I hide the code and deliver the shell script so that nobody else
> can change or view that.
>
> Thanks in advance for the answer.
> Gianluca
>
No. It's a text file anyway.

If you're mastering shell scripting you can produce an obfuscated code,
but it's really difficult.

--
Sensei <senseiwa@tin.it>

cd /pub
more beer

Despite all prevention efforts, Sensei <senseiwa@tin.it> wrote in
news:dbjqkj$ajf$2@news.doit.wisc.edu:

> On 2005-07-19 16:02:59 -0500, "Gianluca S." <gianluca2@email.it> said:
>
>> Hi All
>>
>> Can I hide the code and deliver the shell script so that nobody else
>> can change or view that.
>>
>> Thanks in advance for the answer.
>> Gianluca
>>
> No. It's a text file anyway.
>
> If you're mastering shell scripting you can produce an obfuscated code,
> but it's really difficult.
>

Perhaps I'm missing something (not in front of my AIX box at the moment),
but can't you just make the script executable (chmod +x) and not readable
(chmod -r) to your users?

--
Slor

Too simple!! :-)

Gianluca

"Slor" <slor@comcast.net> ha scritto nel messaggio
news:1121811165.8ade102a908c96145815dce8079b57c8@t eranews...
> Despite all prevention efforts, Sensei <senseiwa@tin.it> wrote in
> news:dbjqkj$ajf$2@news.doit.wisc.edu:
>
>> On 2005-07-19 16:02:59 -0500, "Gianluca S." <gianluca2@email.it> said:
>>
>>> Hi All
>>>
>>> Can I hide the code and deliver the shell script so that nobody else
>>> can change or view that.
>>>
>>> Thanks in advance for the answer.
>>> Gianluca
>>>
>> No. It's a text file anyway.
>>
>> If you're mastering shell scripting you can produce an obfuscated code,
>> but it's really difficult.
>>
>
> Perhaps I'm missing something (not in front of my AIX box at the moment),
> but can't you just make the script executable (chmod +x) and not readable
> (chmod -r) to your users?
>
> --
> Slor

On 2005-07-19 17:12:43 -0500, Slor <slor@comcast.net> said:
> Perhaps I'm missing something (not in front of my AIX box at the
> moment), but can't you just make the script executable (chmod +x) and
> not readable (chmod -r) to your users?

You cannot execute something you cannot read:

username@aixserver:~$ cat a.sh
#!/bin/sh
echo "Hi!"
echo

username@aixserver:~$ ls -l a.sh
-rw-r--r-- 1 username usergrp 26 Jul 20 00:47 a.sh

username@aixserver:~$ chmod a-r a.sh
username@aixserver:~$ chmod a-w a.sh
username@aixserver:~$ chmod a+x a.sh

username@aixserver:~$ ls -l a.sh
---x--x--x 1 username usergrp 26 Jul 20 00:47 a.sh*

username@aixserver:~$ ./a.sh
/bin/sh: /afs/cell.name/user/u/username/a.sh: 0403-016 Cannot find or
open the file.

username@aixserver:~$ uname -a
AIX aixserver 2 5 0053447A4C00

username@aixserver:~$



--
Sensei <senseiwa@tin.it>

cd /pub
more beer

That trick (execute but no read) works for binaries, but not shell
scripts since you really execute the shell binary (/bin/ksh for
example) which then has to read the shell script (a.sh). It does this
as your user id.

you could try using perl and the perl compiler

Gianluca S. wrote:
> Hi All
>
> Can I hide the code and deliver the shell script so that nobody else can
> change or view that.
>
> Thanks in advance for the answer.
> Gianluca

I use a thrid party program called shell-lock from Cactus software. I
then keep the source in a RCVS. You can't totally get rid of the
source.

On 2005-07-20 03:45:58 -0500, "Adrian Bridgett"
<adrian.bridgett@gmail.com> said:

>
> you could try using perl and the perl compiler

He asked for a shell script anyway. He could use python, lisp, C,
whatever, but he wouldn't have a shell script

--
Sensei <senseiwa@tin.it>

cd /pub
more beer

Hi Gianluca,

Try Shell-Lock from Cactus (like tmpolzin mentioned). It has worked
well for us on AIX 4.3, 5.1, and 5.2 so far. They probably have a newer
version, but here is thedetails on the copy we are using:

SHELL-LOCK(tm)
Shell Script Security Software
Copyright (C) 1989-1998
Cactus International, Inc.
(Version: 1.6.2 1/2/98)


btw - we did have a version that used to leave the shell script
compiled until you ran the script. Then it would uncompile it in the
/tmp directory and (lo and behold) the user had the source to look at
again. Version 1.6.2 does not do this anymore, or at least I can't find
where it uncompiles it to. ;-)

Steve

The problem is: I can't find the download link of "shell-lock"
software!! I have serached by google ...without success!!
Can you send me a copy of it or a valid link?

Many Thanks
Gianluca


steven_nospam at Yahoo! Canada ha scritto:
> Hi Gianluca,
>
> Try Shell-Lock from Cactus (like tmpolzin mentioned). It has worked
> well for us on AIX 4.3, 5.1, and 5.2 so far. They probably have a newer
> version, but here is thedetails on the copy we are using:
>
> SHELL-LOCK(tm)
> Shell Script Security Software
> Copyright (C) 1989-1998
> Cactus International, Inc.
> (Version: 1.6.2 1/2/98)
>
>
> btw - we did have a version that used to leave the shell script
> compiled until you ran the script. Then it would uncompile it in the
> /tmp directory and (lo and behold) the user had the source to look at
> again. Version 1.6.2 does not do this anymore, or at least I can't find
> where it uncompiles it to. ;-)
>
> Steve