mjuenema

Instructions for downloading Python packages for installation on a different host.

1. Start a shell inside a CentOS/7 (or any other system) Docker Container with the exact version of Python that is installed on the other host.

mkdir /tmp/python-package
cd /tmp/python-package
docker run -i -t --rm --entrypoint /bin/bash -v `pwd`:/work python:3.7.0-centos7

2. Install and upgrade pip3 (if it doesn't already exist)

mjuenema

Example net-snmp/snmptrapd traphandle

#!/usr/bin/python3
  
"""Example net-snmp/snmptrapd traphandle.

     snmptrapd -a -c snmptrapd.conf -Obs -t -X

     # snmptrapd.conf

mjuenema

Syslog server in Python

Very basic Syslog server in Python that accepts messages in RFC3164 and RFC5424 format. This has only been tested with Rsyslog on Linux and Cisco IOS syslog. Other implementations may send mesages in slightly different format than the two regular expressions at the top of the script will match. In particular there are apparently many implementations that deviate from strict RFC3164.

from __future__ import print_function
import re

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from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

DOCUMENTATION = """
    lookup: sysdescr2os
    author: Markus Juenemann <markus@juenemann.net>
    version_added: "2.5"
    short_description: Derive OS from SNMPv2::sysDescr.0
    description:
      - "Derive the OS from the SNMPv2::sysDescr.0. This lookup is meant ot be used in combination

mjuenema

#!/usr/bin/env python

# Convert IANA Enterprise Numbers to JSON
#
# TODO: Deal with "misformatted" lines in input better.
#
# (c) 2018 Markus Juenemann <markus&juenemann.net>

import json
import urllib

mjuenema

I tried many different getpass style packages but they either didn't install properly or would't work. The code below has been adapted from getpass3. It requires the getch package and only runs under Python 3.

#/usr/bin/env python3

from getch import *
import sys

echo = '*'

mjuenema

Python decorator example

def typecheck(type_):
    def decorator_(func):
    
        def wrapper_(name):
           if not type(name) == type_:
               raise TypeError
 else:

mjuenema

Capture and test sys.stdout with nosetest

import sys
import tempfile

import sys
import tempfile

class Base(object):

mjuenema

"""
Ping all hosts in 10.1.10/24 and print IP addresses of
hosts that replied.

Requires scapy (https://pypi.python.org/pypi/scapy) and
must be run with root permissions.

(c) 2017 Markus Juenemann

"""

mjuenema

Git Crypt

$ git-crypt init
$ vim .gitattributes
secretfile filter=git-crypt diff=git-crypt
*.key      filter=git-crypt diff=git-crypt