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Python bindings for iptables

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AttributeError: 'NoneType' object has no attribute '_handle' using python3.7

leond08 opened this issue · comments

commented

I'm using python3.7and iptc version 0.13.0 when i try to import iptc i got an error:

File "<stdin>", line 1, in <module>
FIle "/usr/lib/python3.7/site-packages/iptc/__init__.py", line 10, in <module>
   from iptc.ip4tc import (is_table_available, Table, Chain, Rule, Match, Target, Policy, IPTCError)
File "/usr/lib/python3.7/site-packages/iptc/ip4tc.py", line 13, in <module>
   from .xtables import (XT_INV_PROTO, NFPROTO_IPV4, XTablesError, xtables,
FIle "/usr/lib/python3.7/site-packages/iptc/xtables.py", line 796, in <module>
   _optind = ct.c_long.in_dll(_libc, "optind")
AttributeError: 'NoneType' object has no attribute '_handle'

is this python version error?
any work around for this :)

commented

Any idea on this?

By the way i am currently using Buildroot for my raspberry pi 3B+

NAME=Buildroot
VERSION=2019.02.1-g48c5339-dirty
ID=buildroot
VERSION_ID=2019.02.1
PRETTY_NAME="Buildroot 2019.02.1"

Kernel Version 4.14

I have libiptc.so and libxtables.so in /usr/lib

commented

I will try to compile the source from master as @frankvanbever has the latest commit
hope this would solve my problem.

commented

For the 0.14 release I've got the following patch series submitted to Buildroot upstream that should solve all find_library() issues. If you were to test it and it works for you could you please mark it as Tested-by?

commented

@frankvanbever after applying the patch
I got this error

Python 3.7.2 (default, Mar  6 2020, 01:18:18) 
[GCC 7.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import iptc
/usr/bin/python3.7: '/usr/lib/python3.7/site-packages/iptc' is not an ELF file
/usr/bin/python3.7: '/usr/lib/python3.7/site-packages/iptc' is not an ELF file
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.7/site-packages/iptc/__init__.py", line 10, in <module>
    from iptc.ip4tc import (is_table_available, Table, Chain, Rule, Match, Target, Policy, IPTCError)
  File "/usr/lib/python3.7/site-packages/iptc/ip4tc.py", line 113, in <module>
    class iptc(object):
  File "/usr/lib/python3.7/site-packages/iptc/ip4tc.py", line 115, in iptc
    iptc_init = _libiptc.iptc_init
AttributeError: 'NoneType' object has no attribute 'iptc_init'
commented

any idea? how to solve this issue.

commented

Hi @leond08 I was able to reproduce the issue. ⬆️ the PR I submitted fixes the issue for me.

commented

@frankvanbever i will test this on my end. Thanks!

commented

Yeah It works now on my environment!

commented

@leond08 Great to hear that it works for you. If you have a couple of minutes to spare, could you please mark the patch as Tested-by:?

The procedure is explained here: http://nightly.buildroot.org/manual.html#_reviewing_and_testing_patches

If you're not subscribed to the mailing list I can add it for you, I just need a name, e-mail address and a short description of the test you did. If you're uncomfortable sharing this here you can send it to me via e-mail at frank.vanbever@essensium.com

This might help with getting this fix merged in Buildroot sooner.

commented

It seems this has been fixed, so closing this issue.