Re: Form processing using bash script

[Carlos Gustavo]

Brilliant! Just what I needed to hear. :-)

Thanks, Kevin.

-Carlos.

On Tue, Oct 6, 2009 at 3:56 PM, Kevin Teague  wrote:

>
>
>
> On Oct 6, 12:02 pm, Carlos Gustavo  wrote:
> > Thanks Kevin,
> >
> > I would give it a shot. Doesn't sound as easy as I had hoped. :-)
> >
>
> To make things even harder, keep in mind that any data gotten from the
> HTTP request which is passed on to a shell call as an argument must
> first be checked and/or cleaned, otherwise a malicious request could
> execute arbitrary shell commands on the server.
>
> >
>

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Re: Form processing using bash script

[Kevin Teague]

On Oct 6, 12:02 pm, Carlos Gustavo  wrote:
> Thanks Kevin,
>
> I would give it a shot. Doesn't sound as easy as I had hoped. :-)
>

To make things even harder, keep in mind that any data gotten from the
HTTP request which is passed on to a shell call as an argument must
first be checked and/or cleaned, otherwise a malicious request could
execute arbitrary shell commands on the server.

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Re: Form processing using bash script

[Carlos Gustavo]

Thanks Kevin,

I would give it a shot. Doesn't sound as easy as I had hoped. :-)

-Carlos.

On Tue, Oct 6, 2009 at 2:55 PM, Kevin Teague  wrote:

>
> Use the os.subprocess module in the python standard library to invoke
> the bash script from your django view code:
>
> http://docs.python.org/library/subprocess.html
>
> Although in my experience, when there is a bash script wrapping a
> number of calls to other programs, I tend to find it easier to work
> with to first port the bash into Python (although I'm biased in favor
> of Python ;P). If you need to communicate with the subprocesses that
> the bash script is invoking, it's going to be more difficult to do
> going through python, then bash, then a C binary than it would be to
> go directly from Python to the C binary.
>
>
>
> >
>

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Re: Form processing using bash script

[Kevin Teague]

Use the os.subprocess module in the python standard library to invoke
the bash script from your django view code:

http://docs.python.org/library/subprocess.html

Although in my experience, when there is a bash script wrapping a
number of calls to other programs, I tend to find it easier to work
with to first port the bash into Python (although I'm biased in favor
of Python ;P). If you need to communicate with the subprocesses that
the bash script is invoking, it's going to be more difficult to do
going through python, then bash, then a C binary than it would be to
go directly from Python to the C binary.



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Re: Form processing using bash script

[Carlos Gustavo]

Hi Daniel,

Thanks for the response to my mail.

These input values are used by a bash script containing various C programs
and the processing results in graph that needs to be displayed as an image
plot on the response form.

Thanks again.

-Carlos

On Tue, Oct 6, 2009 at 2:01 PM, Daniel Roseman wrote:

>
> On Oct 6, 6:01 pm, Carlos Gustavo  wrote:
> > Hi Everyone,
> >
> > I am Django newbie and the experience has been exciting.
> >
> > I want some help with the ff. challenge I am now facing:
> >
> > How can I get a Django form to process a bash script executing a bunch of
> C
> > programs running on linux.
> >
> > Any pointers or suggestions would be deeply appreciated.
> >
> > Thanks in advance.
> >
> > Best regards,
> >
> > -Carlos.
>
> It's not clear what you want to achieve. A Django form is a way of
> entering and validating data via the website. What does the bash
> script have to do with this?
> --
> DR.
> >
>

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Re: Form processing using bash script

[Daniel Roseman]

On Oct 6, 6:01 pm, Carlos Gustavo  wrote:
> Hi Everyone,
>
> I am Django newbie and the experience has been exciting.
>
> I want some help with the ff. challenge I am now facing:
>
> How can I get a Django form to process a bash script executing a bunch of C
> programs running on linux.
>
> Any pointers or suggestions would be deeply appreciated.
>
> Thanks in advance.
>
> Best regards,
>
> -Carlos.

It's not clear what you want to achieve. A Django form is a way of
entering and validating data via the website. What does the bash
script have to do with this?
--
DR.
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