Mailing List Archive: Python & nmap

Python & nmap

May 18, 2022, 2:52 PM

Post #1 of 10 (359 views)

Hi guys,

i need to copy some files from a Debian client to all linux embedded
clients.

I know the linux commands like:

# scp "my_file" root@192.168.205.x/my_directory

But... I have to upload 100 devices, I have a lan and a dhcp server just
for this work and I'd like to make a script by Python which can:

1) To scan the lan
2) To find which ips are "ready"
3) To send files to all of the "ready" clients
4) After I see on the display of these clients the successfully update I
remove from the lan them and I put them to the box to send them to our
customers.

I found https://pypi.org/project/python-nmap/ and I followed the line
"To check the network status" but... it doesn't work.

THE INPUT
-------------------------------------------------------------------------
import nmap
nm.scan(hosts='192.168.205.0/24', arguments='-n -sP -PE -PA21,23,80,3389')
hosts_list = [(x, nm[x]['status']['state']) for x in nm.all_hosts()]
for host, status in hosts_list:
print('{0}:{1}'.host)

THE OUTPUT
---------------------------------------------------------------------
Traceback (most recent call last):
File "/home/gabriele/Documenti/Python/nmap.py", line 1, in <module>
import nmap
File "/home/gabriele/Documenti/Python/nmap.py", line 2, in <module>
nm.scan(hosts='192.168.205.0/24', arguments='-n -sP -PE
-PA21,23,80,3389')
NameError: name 'nm' is not defined

Regards.
^Bart
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Re: Python & nmap [ In reply to ]

python-list at python

May 18, 2022, 3:00 PM

Post #2 of 10 (359 views)

Permalink

On 2022-05-18, ^Bart <gabriele1NOSPAM@hotmail.com> wrote:
> THE INPUT
> -------------------------------------------------------------------------
> import nmap
> nm.scan(hosts='192.168.205.0/24', arguments='-n -sP -PE -PA21,23,80,3389')
> hosts_list = [(x, nm[x]['status']['state']) for x in nm.all_hosts()]
> for host, status in hosts_list:
> print('{0}:{1}'.host)
>
> THE OUTPUT
> ---------------------------------------------------------------------
> Traceback (most recent call last):
> File "/home/gabriele/Documenti/Python/nmap.py", line 1, in <module>
> import nmap
> File "/home/gabriele/Documenti/Python/nmap.py", line 2, in <module>
> nm.scan(hosts='192.168.205.0/24', arguments='-n -sP -PE
> -PA21,23,80,3389')
> NameError: name 'nm' is not defined

You forgot the second line (after 'import nmap' and before 'nm.scan()'):

nm = nmap.PortScanner()

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Re: Python & nmap [ In reply to ]

lal at solute

May 19, 2022, 12:59 AM

Post #3 of 10 (358 views)

Permalink

> # scp "my_file" root@192.168.205.x/my_directory

Maybe it could be a good idea to look at Ansible for copying the Files
to all the hosts, because that is one thing ansible is made for.

For the nmap part: Ansible does not have a module for that (sadly) but
is very extensible, so if you start developing something like that in
Python, you could as well write an ansible module and combine both,
because Ansible itself is written in Python.

Cheers

Lars

--
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Software Entwickler

Phone:
Fax: +49 721 98993-
E-mail: lal@solute.de

solute GmbH
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76185 Karlsruhe
Germany

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Re: Python & nmap [ In reply to ]

python-list at python

May 19, 2022, 2:04 AM

Post #4 of 10 (358 views)

Permalink

On Wed, 18 May 2022 23:52:05 +0200, ^Bart wrote:

> Hi guys,
>
> i need to copy some files from a Debian client to all linux embedded
> clients.
>
> I know the linux commands like:
>
> # scp "my_file" root@192.168.205.x/my_directory
>
> But... I have to upload 100 devices, I have a lan and a dhcp server just
> for this work and I'd like to make a script by Python which can:
>
> 1) To scan the lan 2) To find which ips are "ready"
> 3) To send files to all of the "ready" clients 4) After I see on the
> display of these clients the successfully update I remove from the lan
> them and I put them to the box to send them to our customers.
>
> I found https://pypi.org/project/python-nmap/ and I followed the line
> "To check the network status" but... it doesn't work.
>
> THE INPUT
>
-------------------------------------------------------------------------
> import nmap nm.scan(hosts='192.168.205.0/24', arguments='-n -sP -PE
> -PA21,23,80,3389')
> hosts_list = [(x, nm[x]['status']['state']) for x in nm.all_hosts()]
> for host, status in hosts_list:
> print('{0}:{1}'.host)
>
> THE OUTPUT
> ---------------------------------------------------------------------
> Traceback (most recent call last):
> File "/home/gabriele/Documenti/Python/nmap.py", line 1, in <module>
> import nmap
> File "/home/gabriele/Documenti/Python/nmap.py", line 2, in <module>
> nm.scan(hosts='192.168.205.0/24', arguments='-n -sP -PE
> -PA21,23,80,3389')
> NameError: name 'nm' is not defined
>
> Regards.
> ^Bart

Opbservations worth considering
1) could possibly be handled by a simple bash script (My bash skills are
not great So i would probably still go python myself anyway)
2) Instead of checking availability just try to send & react appropriately
if it fails (Ask for forgiveness not permission), the client could fail
after test or during transfer anyway so you will still need this level of
error checking

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Re: Python & nmap [ In reply to ]

gabriele1NOSPAM at hotmail

May 19, 2022, 12:16 PM

Post #5 of 10 (358 views)

Permalink

> Maybe it could be a good idea to look at Ansible for copying the Files
> to all the hosts, because that is one thing ansible is made for.

I didn't know it... thanks to share it but... I should start to study it
and I don't have not enought free time... but maybe in the future I'll
do it! :)

> For the nmap part: Ansible does not have a module for that (sadly) but
> is very extensible, so if you start developing something like that in
> Python, you could as well write an ansible module and combine both,
> because Ansible itself is written in Python.

Ah ok, maybe now I just start to write a bash script because I need to
start this work asap, when I'll have one minute I'll try to move the
script in Python and after it I could "upload" the work on Ansible! :)

> Cheers
>
> Lars

Thanks!
^Bart

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Re: Python & nmap [ In reply to ]

gabriele1NOSPAM at hotmail

May 19, 2022, 12:21 PM

Post #6 of 10 (358 views)

Permalink

> Opbservations worth considering
> 1) could possibly be handled by a simple bash script (My bash skills are
> not great So i would probably still go python myself anyway)

Like what I wrote in my last reply to another user now I need to start
this work asap so maybe I'll start to write a rough bash script and I
hope to manage it when I'll have free time on Python!

> 2) Instead of checking availability just try to send & react appropriately
> if it fails (Ask for forgiveness not permission), the client could fail
> after test or during transfer anyway so you will still need this level of
> error checking

Sadly true... I didn't think about it but maybe I could find a solution
in bash script...

Thanks for your reply! :)
^Bart

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Re: Python & nmap [ In reply to ]

gabriele1NOSPAM at hotmail

May 19, 2022, 12:28 PM

Post #7 of 10 (358 views)

Permalink

> You forgot the second line (after 'import nmap' and before 'nm.scan()'):
>
> nm = nmap.PortScanner()

import nmap
nm = nmap.PortScanner()
nm.scan(hosts='192.168.205.0/24', arguments='-n -sP -PE -PA21,23,80,3389')
hosts_list = [(x, nm[x]['status']['state']) for x in nm.all_hosts()]
for host, status in hosts_list:
print('{0}:{1}'.host)

And the result is:

Traceback (most recent call last):
File "/home/gabriele/Documenti/Python/nmap.py", line 1, in <module>
import nmap
File "/home/gabriele/Documenti/Python/nmap.py", line 2, in <module>
nm = nmap.PortScanner()
AttributeError: partially initialized module 'nmap' has no attribute
'PortScanner' (most likely due to a circular import)
>>>

I'm using the IDLE Shell 3.9.2 on Debian Bullseye+KDE, if I write the
script from command line it works!

^Bart
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Re: Python & nmap [ In reply to ]

python at mrabarnett

May 19, 2022, 3:11 PM

Post #8 of 10 (358 views)

Permalink

On 2022-05-19 20:28, ^Bart wrote:
>> You forgot the second line (after 'import nmap' and before 'nm.scan()'):
>>
>> nm = nmap.PortScanner()
>
> import nmap
> nm = nmap.PortScanner()
> nm.scan(hosts='192.168.205.0/24', arguments='-n -sP -PE -PA21,23,80,3389')
> hosts_list = [(x, nm[x]['status']['state']) for x in nm.all_hosts()]
> for host, status in hosts_list:
> print('{0}:{1}'.host)
>
> And the result is:
>
> Traceback (most recent call last):
> File "/home/gabriele/Documenti/Python/nmap.py", line 1, in <module>
> import nmap
> File "/home/gabriele/Documenti/Python/nmap.py", line 2, in <module>
> nm = nmap.PortScanner()
> AttributeError: partially initialized module 'nmap' has no attribute
> 'PortScanner' (most likely due to a circular import)
> >>>
>
> I'm using the IDLE Shell 3.9.2 on Debian Bullseye+KDE, if I write the
> script from command line it works!
>
When you installed nmap it would've been installed into site-packages,
but the traceback says "/home/gabriele/Documenti/Python/nmap.py", which
suggests to me that you called your script "nmap.py", so it's shadowing
what you installed and is actually trying to import itself!
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Re: Python & nmap [ In reply to ]

lal at solute

May 20, 2022, 2:21 AM

Post #9 of 10 (358 views)

Permalink

Ansible has got a shell module, so you could run custom commands on all
hosts. But it gets more difficult in parsing the output afterwards.

--
Lars Liedtke
Software Entwickler

Phone:
Fax: +49 721 98993-
E-mail: lal@solute.de

solute GmbH
Zeppelinstraße 15
76185 Karlsruhe
Germany

Marken der solute GmbH | brands of solute GmbH
billiger.de | Shopping.de

Geschäftsführer | Managing Director: Dr. Thilo Gans, Bernd Vermaaten
Webseite | www.solute.de
Sitz | Registered Office: Karlsruhe
Registergericht | Register Court: Amtsgericht Mannheim
Registernummer | Register No.: HRB 110579
USt-ID | VAT ID: DE234663798

Informationen zum Datenschutz | Information about privacy policy
http://solute.de/ger/datenschutz/grundsaetze-der-datenverarbeitung.php

Am 19.05.22 um 21:16 schrieb ^Bart:
>> Maybe it could be a good idea to look at Ansible for copying the
>> Files to all the hosts, because that is one thing ansible is made for.
>
> I didn't know it... thanks to share it but... I should start to study
> it and I don't have not enought free time... but maybe in the future
> I'll do it! :)
>
>> For the nmap part: Ansible does not have a module for that (sadly)
>> but is very extensible, so if you start developing something like
>> that in Python, you could as well write an ansible module and combine
>> both, because Ansible itself is written in Python.
>
> Ah ok, maybe now I just start to write a bash script because I need to
> start this work asap, when I'll have one minute I'll try to move the
> script in Python and after it I could "upload" the work on Ansible! :)
>
>> Cheers
>>
>> Lars
>
> Thanks!
> ^Bart
>

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Re: Python & nmap [ In reply to ]

loris.bennett at fu-berlin

May 20, 2022, 3:51 AM

Post #10 of 10 (358 views)

Permalink

Lars Liedtke <lal@solute.de> writes:

> Ansible has got a shell module, so you could run custom commands on all
> hosts. But it gets more difficult in parsing the output afterwards.

If you just want to copy files, pdsh[1] or clush[2] might be enough.

Cheers,

Loris

Footnotes:
[1] https://github.com/chaos/pdsh
[2] https://clustershell.readthedocs.io/en/latest/tools/clush.html

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