sudoers_parser.py

#!/usr/bin/env python
import json
import os
import re
from glob import glob

SUDOERS_D = '/etc/sudoers.d'
SUDOERS_FILE = '/etc/sudoers'

__doc__ = "Prints all sudoers entries (users/groups) found in /etc/sudoers.d & /etc/sudoers, and their assigned rules to stdout"

def main():
    sudoers = []
    if os.path.isdir(SUDOERS_D):
       for sudoers_file_path in glob(SUDOERS_D + '/*'):
           f = open(sudoers_file_path, 'r')
           for li in f.readlines():
               li = li.rstrip()  # trim trailing whitespace
               match = re.match(r"^(\S*)\s*(.*)", li)  # match "(username/group)space(rule)"
               if match:
                   sudoers.append(match.groups())
           f.close()

    sudoers_file = open(SUDOERS_FILE, 'r')
    for li in sudoers_file.readlines():
        li = li.strip()
        if li.startswith('Defaults') or li.startswith('#') or li == "":
             continue
        match = re.match(r"^(\S*)\s*(.*)", li)
        if match:
            sudoers.append(match.groups())
    sudoers_file.close()

    sudoers.sort(key=lambda x: x[0])
    return json.dumps(sudoers, sort_keys=True, indent=4, separators=(',', ': '))

if __name__ == '__main__':
    print(main())