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#!/usr/bin/env python
# coding: utf-8
# chsh.py - program for changing the login shell using nslcd
#
# Copyright (C) 2013-2019 Arthur de Jong
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA
import argparse
import constants
import nslcd
import shells
import users
from cmdline import ListShellsAction, VersionAction
# set up command line parser
parser = argparse.ArgumentParser(
description='Change the user login shell in LDAP.',
epilog='Report bugs to <%s>.' % constants.PACKAGE_BUGREPORT)
parser.add_argument('-V', '--version', action=VersionAction)
parser.add_argument('-s', '--shell', help='login shell for the user account')
parser.add_argument('-l', '--list-shells', action=ListShellsAction)
parser.add_argument('username', metavar='USER', nargs='?',
help="the user who's shell to change")
def ask_shell(oldshell):
"""Ask the user to provide a shell."""
# Provide Python 2 compatibility
prompt = ' Login Shell [%s]: ' % oldshell
try:
shell = raw_input(prompt)
except NameError:
shell = input(prompt)
return shell or oldshell
def main():
# parse arguments
args = parser.parse_args()
# check username part
user = users.User(args.username)
user.check()
# check the command line shell if one was provided (to fail early)
shell = args.shell
if shell is not None:
shells.check(shell, user.asroot)
# prompt for a password if required
password = user.get_passwd()
# prompt for a shell if it was not specified on the command line
if shell is None:
print('Enter the new value, or press ENTER for the default')
shell = ask_shell(user.shell)
shells.check(shell, user.asroot)
# perform the modification
nslcd.usermod(
user.username, user.asroot, password, {
constants.NSLCD_USERMOD_SHELL: shell,
})
# TODO: print proper response
if __name__ == '__main__':
main()
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