Re: SHC bash script compiler for Linux on z

[Paul Flint]

Mark,

The difference between Freeware and Open Source is critical and has to do 
with the overloading of the word "free".  One is an economic issue the 
other an issue of liberty.


Get back to me if this is not clear.

Regards,

Flint

On Wed, 8 Feb 2017, Mark Post wrote:


Date: Wed, 8 Feb 2017 14:47:47 -0700
From: Mark Post <mp...@suse.com>
Reply-To: Linux on 390 Port <LINUX-390@VM.MARIST.EDU>
To: LINUX-390@VM.MARIST.EDU
Subject: Re: SHC bash script compiler for Linux on z


On 2/8/2017 at 04:26 PM, Paul Flint <fl...@flint.com> wrote:

A comfort to know that it is not Freeware...


It shouldn't be.  Neither "open source" nor "freeware" by themselves are any 
indication of quality.


Mark Post

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Re: SHC bash script compiler for Linux on z

[Paul Flint]

Itschak,

I completely agree with your reasons!

I am giving a presentation on bash in June at the VM Workshop in 
Cleveland.


Regards,

Paul Flint


On Thu, 9 Feb 2017, Itschak Mugzach wrote:


Date: Thu, 9 Feb 2017 00:04:10 +0200
From: Itschak Mugzach <imugz...@gmail.com>
Reply-To: Linux on 390 Port <LINUX-390@VM.MARIST.EDU>
To: LINUX-390@VM.MARIST.EDU
Subject: Re: SHC bash script compiler for Linux on z

The reason I choose bash was that you nothing to install, so it will run on any 
standard Linux. Not sure about the assemblers and I was a bit joking. C looks 
an equal solution.

ITschak

נשלח מה-iPad שלי

‫ב-8 בפבר׳ 2017, בשעה 23:54, ‏‏Mark Post ‏<mp...@suse.com> כתב/ה:‬


On 2/8/2017 at 04:21 PM, Itschak Mugzach <imugz...@gmail.com> wrote:

I accept that. does SLES supports Assembler 390 ;-) If it should be C, C it
will be.


Not really, since there isn't an open source package to do that.  The GNU 
Compiler Colllection (gcc) does contain an assembler, as.  The syntax is not 
the same as what you're used to, so it doesn't really count.

Dave Rivers has already posted about his company's supported product.  There is 
also a no-cost assembler from Tachyon Software, 
http://www.tachyonsoft.com/legacy.html  I don't know how that compares to 
Dignus' product, but the price is certainly attractive.  Tachyon also offers a 
for-fee product at http://www.tachyonsoft.com/txaover.html

I have no experience with any of these products, so I can't offer any advice on 
them.


Mark Post

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Re: SHC bash script compiler for Linux on z

[Itschak Mugzach]

The reason I choose bash was that you nothing to install, so it will run on any 
standard Linux. Not sure about the assemblers and I was a bit joking. C looks 
an equal solution.

ITschak

נשלח מה-iPad שלי

‫ב-8 בפבר׳ 2017, בשעה 23:54, ‏‏Mark Post ‏ כתב/ה:‬

 On 2/8/2017 at 04:21 PM, Itschak Mugzach  wrote: 
>> I accept that. does SLES supports Assembler 390 ;-) If it should be C, C it
>> will be.
> 
> Not really, since there isn't an open source package to do that.  The GNU 
> Compiler Colllection (gcc) does contain an assembler, as.  The syntax is not 
> the same as what you're used to, so it doesn't really count.
> 
> Dave Rivers has already posted about his company's supported product.  There 
> is also a no-cost assembler from Tachyon Software, 
> http://www.tachyonsoft.com/legacy.html  I don't know how that compares to 
> Dignus' product, but the price is certainly attractive.  Tachyon also offers 
> a for-fee product at http://www.tachyonsoft.com/txaover.html 
> 
> I have no experience with any of these products, so I can't offer any advice 
> on them.
> 
> 
> Mark Post
> 
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Re: SHC bash script compiler for Linux on z

[Mark Post]

>>> On 2/8/2017 at 04:26 PM, Paul Flint  wrote: 
> A comfort to know that it is not Freeware...

It shouldn't be.  Neither "open source" nor "freeware" by themselves are any 
indication of quality.


Mark Post

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Re: SHC bash script compiler for Linux on z

[Thomas David Rivers]

>
> I accept that. does SLES supports Assembler 390 ;-) If it should be C, C it
> will be.
>
> Thanks.
> ITschak
>

 Yes - you can use our assembler to write HLASM-style programs
 on s390x SLES.

- Dave Rivers -

--
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Get your mainframe programming tools at http://www.dignus.com

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Re: SHC bash script compiler for Linux on z

[Paul Flint]

Mark,

A comfort to know that it is not Freeware...

Regards,

Paul

On Wed, 8 Feb 2017, Mark Post wrote:


Date: Wed, 8 Feb 2017 14:13:21 -0700
From: Mark Post <mp...@suse.com>
Reply-To: Linux on 390 Port <LINUX-390@VM.MARIST.EDU>
To: LINUX-390@VM.MARIST.EDU
Subject: Re: SHC bash script compiler for Linux on z


On 2/8/2017 at 04:01 PM, Paul Flint <fl...@flint.com> wrote:

Just to be clear, this code is not Open Source but Freeware.


You have that 100% backward.  The shc package is open source since it is 
licensed under an OSI approved license: GNU GPL V3.


Mark Post

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Re: SHC bash script compiler for Linux on z

[Itschak Mugzach]

I accept that. does SLES supports Assembler 390 ;-) If it should be C, C it
will be.

Thanks.
ITschak

On Wed, Feb 8, 2017 at 11:15 PM, Mark Post  wrote:

> >>> On 2/8/2017 at 03:42 PM, Itschak Mugzach  wrote:
> > Hi Mark.
> >
> > my intent is to hide the code. I believe that most people wont invest
> time
>
> Perhaps not, but if you believe it to be worth protecting, do it right.
>
> > in trying to investigate it, but who knows. Any other laternative to
> > protect bash code, or should I look into a different language?
>
> If you don't want people to examine your code, then you really need to use
> a compiled language, such as C, COBOL, C++, FORTRAN, whatever.
>
>
> Mark Post
>
> --
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> http://wiki.linuxvm.org/
>



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Re: SHC bash script compiler for Linux on z

[Mark Post]

>>> On 2/8/2017 at 03:42 PM, Itschak Mugzach  wrote: 
> Hi Mark.
> 
> my intent is to hide the code. I believe that most people wont invest time

Perhaps not, but if you believe it to be worth protecting, do it right.

> in trying to investigate it, but who knows. Any other laternative to
> protect bash code, or should I look into a different language?

If you don't want people to examine your code, then you really need to use a 
compiled language, such as C, COBOL, C++, FORTRAN, whatever.


Mark Post

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Re: SHC bash script compiler for Linux on z

[Mark Post]

>>> On 2/8/2017 at 04:01 PM, Paul Flint  wrote: 
> Just to be clear, this code is not Open Source but Freeware.

You have that 100% backward.  The shc package is open source since it is 
licensed under an OSI approved license: GNU GPL V3.


Mark Post

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Re: SHC bash script compiler for Linux on z

[Itschak Mugzach]

Well, there are many reasons why to hide the code from others. my reason is
that the code will run on other people's servers and I don't want them to
look into. it include how I do what I do, certificates, etc. file system
protection is not sufficient if I can't control it.

ITschak

On Wed, Feb 8, 2017 at 11:07 PM, John McKown 
wrote:

> On Wed, Feb 8, 2017 at 3:00 PM, Paul Flint  wrote:
>
> > Greetings Itschak,
> >
> > You could protect your bash source by the Unix permissions...
> >
> > I know it sound niaf, in this day and age with everyone havin root, but
> > thought it worth mentioning.
> >
>
> ​Can you run a BASH script which you cannot also read? I was under the
> impression that was the desire. To "protect" the script from being
> inspected. I don't really know why, perhaps an embedded password?​
>
>
>
> >
> > Regards,
> >
> > Paul
> >
> > On Wed, 8 Feb 2017, Itschak naive wrote:
> >
> >
> >>
>
> --
> Our calculus classes are an integral part of your education.
>
> Maranatha! <><
> John McKown
>
> --
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>



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Re: SHC bash script compiler for Linux on z

[Itschak Mugzach]

Paul, the script may run on other people's server which I do not have
control over.

ITschak

On Wed, Feb 8, 2017 at 11:00 PM, Paul Flint <fl...@flint.com> wrote:

> Greetings Itschak,
>
> You could protect your bash source by the Unix permissions...
>
> I know it sound niaf, in this day and age with everyone havin root, but
> thought it worth mentioning.
>
> Regards,
>
> Paul
>
> On Wed, 8 Feb 2017, Itschak naive wrote:
>
> Date: Wed, 8 Feb 2017 22:42:37 +0200
>> From: Itschak Mugzach <imugz...@gmail.com>
>> Reply-To: i_mugz...@securiteam.co.il
>> To: LINUX-390@VM.MARIST.EDU
>> Subject: Re: SHC bash script compiler for Linux on z
>>
>>
>> Hi Mark.
>>
>> my intent is to hide the code. I believe that most people wont invest time
>> in trying to investigate it, but who knows. Any other laternative to
>> protect bash code, or should I look into a different language?
>>
>> ITschak
>>
>> On Wed, Feb 8, 2017 at 10:27 PM, Mark Post <mp...@suse.com> wrote:
>>
>> On 2/8/2017 at 02:43 PM, Itschak Mugzach <imugz...@gmail.com> wrote:
>>>>>>
>>>>> I wonder if any of you tried this freeware.
>>>>
>>>
>>> It's not freeware.  It's licensed under the GNU GPL 3.  Two extremely
>>> different things.
>>>
>>> I was able to install it on
>>>> Centos 7, but it seems that the makefile is not sutable for SUSE or SUSE
>>>> for z.. Below is the make file. I replaced the CC with gcc but am not
>>>> familier with the parms requires.
>>>>
>>>
>>> I see various flavors of it in the openSUSE Build Service.  Several of
>>> them build packages for both openSUSE and SLES.
>>> https://build.opensuse.org/search
>>>
>>> Looking at the description, I don't think it's going to do what you want.
>>> It's not really a compiler, so there will be no performance boost from
>>> using it.  Since it encrypts and decrypts the original script and then
>>> invokes it with the running system's version of the shell, it won't
>>> provide
>>> any real protection from people being able to look at and copy the
>>> script.
>>> (I would imagine anyone even remotely familiar with gdb would be able to
>>> extract that with no problem.)
>>>
>>> What you want may be something entirely different, however, so it's up to
>>> you.
>>>
>>>
>>> Mark Post
>>>
>>> --
>>> For LINUX-390 subscribe / signoff / archive access instructions,
>>> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or
>>> visit
>>> http://www.marist.edu/htbin/wlvindex?LINUX-390
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>>> For more information on Linux on System z, visit
>>> http://wiki.linuxvm.org/
>>>
>>>
>>
>>
>> --
>> ITschak Mugzach
>> *|** IronSphere Platform* *|** An IT GRC for Legacy systems* *| Automated
>> Security Readiness Reviews (SRR) **|*
>>
>> --
>> For LINUX-390 subscribe / signoff / archive access instructions,
>> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or
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>> http://wiki.linuxvm.org/
>>
>>
> Kindest Regards,
>
>
>
> ☮ Paul Flint
> (802) 479-2360 Home
> (802) 595-9365 Cell
>
> /
> Based upon email reliability concerns,
> please send an acknowledgement in response to this note.
>
> Paul Flint
> 17 Averill Street
> Barre, VT
> 05641
>
>
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> http://wiki.linuxvm.org/
>



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Re: SHC bash script compiler for Linux on z

[John McKown]

On Wed, Feb 8, 2017 at 3:00 PM, Paul Flint  wrote:

> Greetings Itschak,
>
> You could protect your bash source by the Unix permissions...
>
> I know it sound niaf, in this day and age with everyone havin root, but
> thought it worth mentioning.
>

​Can you run a BASH script which you cannot also read? I was under the
impression that was the desire. To "protect" the script from being
inspected. I don't really know why, perhaps an embedded password?​



>
> Regards,
>
> Paul
>
> On Wed, 8 Feb 2017, Itschak naive wrote:
>
>
>>

-- 
Our calculus classes are an integral part of your education.

Maranatha! <><
John McKown

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Re: SHC bash script compiler for Linux on z

[Paul Flint]

Greetings Itschak,

Just to be clear, this code is not Open Source but Freeware.

FWIW I would not install freeware.

Regards,

Flint

On Wed, 8 Feb 2017, Itschak Mugzach wrote:


Date: Wed, 8 Feb 2017 21:43:44 +0200
From: Itschak Mugzach 
Reply-To: i_mugz...@securiteam.co.il
To: LINUX-390@VM.MARIST.EDU
Subject: SHC bash script compiler for Linux on z

I wonder if any of you tried this freeware. I was able to install it on
Centos 7, but it seems that the makefile is not sutable for SUSE or SUSE
for z.. Below is the make file. I replaced the CC with gcc but am not
familier with the parms requires.

# Makefile
#

INSTALL_PATH = /usr/local

# For SCO
CFLAGS = -b elf -O -D_SVID

# For IRIX
CFLAGS = -xansi -fullwarn -O3 -g0

# For Solaris
CFLAGS = -fast -xO4 -s -v -Xa

# For HPUX
CFLAGS = -Wall -O -Ae

# For OSF1
CFLAGS = -w -verbose -fast -std1 -g0

# For GNU C compiler
CFLAGS = -Wall -O6 # -pedantic

SHELL = /bin/sh

all: shc ask_for_test

shc: shc.c
   $(cc) $(CFLAGS) $@.c -o $@

ask_for_test:
   @echo '***  ¿Do you want to probe shc with a test script?'
   @echo '***  Please try...   make test'

test: make_the_test ask_for_strings

make_the_test: match.x
   @echo '***  Running a compiled test script!'
   @echo '***  It must show files with substring "sh" in your
PATH...'
   ./match.x sh

match.x: shc match
   @echo '***  Compiling script "match"'
   CFLAGS="$(CFLAGS)" ./shc -v -f match

ask_for_strings:
   @echo '***  ¿Do you want to see strings in the generated
binary?'
   @echo '***  Please try...   make strings'

strings: make_the_strings ask_for_expiration

make_the_strings: match.x
   @echo '***  Running: "strings -n 5 'match.x'"'
   @echo '***  It must show no sensible information...'
   strings -n 5 match.x

ask_for_expiration:
   @echo '***  ¿Do you want to probe expiration date?'
   @echo '***  Please try...   make expiration'

expiration: til_yesterday ask_for_install

til_yesterday: shc match
   @echo '***  Compiling "match" to expired date'
   CFLAGS="$(CFLAGS)" ./shc -vvv -e `date "+%d/%m/%Y"` -f match
   @echo '***  Running a compiled test script!'
   @echo '***  It must fail showing "./match.x: has expired!"'
   ./match.x

ask_for_install:
   @echo '***  ¿Do you want to install shc?'
   @echo '***  Please try...   make install'

install: shc
   @echo '***  Installing shc and shc.1 on '$(INSTALL_PATH)
   @echo -n '***   ¿Do you want to continue? '; read ANS; case "$$ANS"
in y|Y|yes|Yes|YES) ;; *) exit 1;; esac;
   install -c -s shc $(INSTALL_PATH)/bin/
   install -c -m 644 shc.1 $(INSTALL_PATH)/man/man1/

clean:
   rm -f *.o *~ *.x.c

cleanall: clean
   rm -f shc *.x




--
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Re: SHC bash script compiler for Linux on z

[Paul Flint]

Greetings Itschak,

You could protect your bash source by the Unix permissions...

I know it sound niaf, in this day and age with everyone havin root, but 
thought it worth mentioning.


Regards,

Paul

On Wed, 8 Feb 2017, Itschak naive wrote:


Date: Wed, 8 Feb 2017 22:42:37 +0200
From: Itschak Mugzach <imugz...@gmail.com>
Reply-To: i_mugz...@securiteam.co.il
To: LINUX-390@VM.MARIST.EDU
Subject: Re: SHC bash script compiler for Linux on z

Hi Mark.

my intent is to hide the code. I believe that most people wont invest time
in trying to investigate it, but who knows. Any other laternative to
protect bash code, or should I look into a different language?

ITschak

On Wed, Feb 8, 2017 at 10:27 PM, Mark Post <mp...@suse.com> wrote:


On 2/8/2017 at 02:43 PM, Itschak Mugzach <imugz...@gmail.com> wrote:

I wonder if any of you tried this freeware.


It's not freeware.  It's licensed under the GNU GPL 3.  Two extremely
different things.


I was able to install it on
Centos 7, but it seems that the makefile is not sutable for SUSE or SUSE
for z.. Below is the make file. I replaced the CC with gcc but am not
familier with the parms requires.


I see various flavors of it in the openSUSE Build Service.  Several of
them build packages for both openSUSE and SLES.
https://build.opensuse.org/search

Looking at the description, I don't think it's going to do what you want.
It's not really a compiler, so there will be no performance boost from
using it.  Since it encrypts and decrypts the original script and then
invokes it with the running system's version of the shell, it won't provide
any real protection from people being able to look at and copy the script.
(I would imagine anyone even remotely familiar with gdb would be able to
extract that with no problem.)

What you want may be something entirely different, however, so it's up to
you.


Mark Post

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ITschak Mugzach
*|** IronSphere Platform* *|** An IT GRC for Legacy systems* *| Automated
Security Readiness Reviews (SRR) **|*

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Kindest Regards,



☮ Paul Flint
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Re: SHC bash script compiler for Linux on z

[Itschak Mugzach]

Hi Mark.

my intent is to hide the code. I believe that most people wont invest time
in trying to investigate it, but who knows. Any other laternative to
protect bash code, or should I look into a different language?

ITschak

On Wed, Feb 8, 2017 at 10:27 PM, Mark Post  wrote:

> >>> On 2/8/2017 at 02:43 PM, Itschak Mugzach  wrote:
> > I wonder if any of you tried this freeware.
>
> It's not freeware.  It's licensed under the GNU GPL 3.  Two extremely
> different things.
>
> > I was able to install it on
> > Centos 7, but it seems that the makefile is not sutable for SUSE or SUSE
> > for z.. Below is the make file. I replaced the CC with gcc but am not
> > familier with the parms requires.
>
> I see various flavors of it in the openSUSE Build Service.  Several of
> them build packages for both openSUSE and SLES.
> https://build.opensuse.org/search
>
> Looking at the description, I don't think it's going to do what you want.
> It's not really a compiler, so there will be no performance boost from
> using it.  Since it encrypts and decrypts the original script and then
> invokes it with the running system's version of the shell, it won't provide
> any real protection from people being able to look at and copy the script.
> (I would imagine anyone even remotely familiar with gdb would be able to
> extract that with no problem.)
>
> What you want may be something entirely different, however, so it's up to
> you.
>
>
> Mark Post
>
> --
> For LINUX-390 subscribe / signoff / archive access instructions,
> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or
> visit
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> --
> For more information on Linux on System z, visit
> http://wiki.linuxvm.org/
>



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ITschak Mugzach
*|** IronSphere Platform* *|** An IT GRC for Legacy systems* *| Automated
Security Readiness Reviews (SRR) **|*

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Re: SHC bash script compiler for Linux on z

[Mark Post]

>>> On 2/8/2017 at 02:43 PM, Itschak Mugzach  wrote: 
> I wonder if any of you tried this freeware.

It's not freeware.  It's licensed under the GNU GPL 3.  Two extremely different 
things.

> I was able to install it on
> Centos 7, but it seems that the makefile is not sutable for SUSE or SUSE
> for z.. Below is the make file. I replaced the CC with gcc but am not
> familier with the parms requires.

I see various flavors of it in the openSUSE Build Service.  Several of them 
build packages for both openSUSE and SLES.
https://build.opensuse.org/search

Looking at the description, I don't think it's going to do what you want.  It's 
not really a compiler, so there will be no performance boost from using it.  
Since it encrypts and decrypts the original script and then invokes it with the 
running system's version of the shell, it won't provide any real protection 
from people being able to look at and copy the script.  (I would imagine anyone 
even remotely familiar with gdb would be able to extract that with no problem.)

What you want may be something entirely different, however, so it's up to you.


Mark Post

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