Add user module to create, modify, and delete user accounts
This relies on useradd, usermod, and userdel utilities on the system. The argument name is required; if state is not provided, present is assumed. Other options supported for creating or modifying an existing account: uid, gid, comment, home, shell, and password. If managing the password, it must already be encrypted. When creating an account, you can also provide the argument createhome to control whether the home directory is created. Arguments supported for deleting an account are: force (remove account even if user is logged in) and remove (remove home directory).
This commit is contained in:
Stephen Fromm
parent
e48b6b46ee
commit
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1 changed files with 250 additions and 0 deletions
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user
Executable file
250
user
Executable file
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#!/usr/bin/python
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# (c) 2012, Stephen Fromm <sfromm@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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try:
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import json
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except ImportError:
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import simplejson as json
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import os
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import pwd
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import shlex
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import spwd
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import subprocess
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import sys
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USERADD = "/usr/sbin/useradd"
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USERMOD = "/usr/sbin/usermod"
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USERDEL = "/usr/sbin/userdel"
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def debug(msg):
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# ansible ignores stderr, so it's safe to use for debug
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print >>sys.stderr, msg
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#pass
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def exit_json(rc=0, **kwargs):
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if 'name' in kwargs:
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debug("add user info to exit_json")
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add_user_info(kwargs)
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print json.dumps(kwargs)
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sys.exit(rc)
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def fail_json(**kwargs):
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kwargs['failed'] = True
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exit_json(rc=1, **kwargs)
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def add_user_info(kwargs):
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name = kwargs['name']
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if user_exists(name):
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kwargs['state'] = 'present'
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info = user_info(name)
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kwargs['uid'] = info[2]
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kwargs['gid'] = info[3]
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kwargs['comment'] = info[4]
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kwargs['home'] = info[5]
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kwargs['shell'] = info[6]
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kwargs['createhome'] = os.path.exists(info[5])
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else:
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kwargs['state'] = 'absent'
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return kwargs
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def user_del(user, **kwargs):
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cmd = [USERDEL]
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for key in kwargs:
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if key == 'force' and kwargs[key]:
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cmd.append('-f')
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elif key == 'remove' and kwargs[key]:
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cmd.append('-r')
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cmd.append(user)
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debug("Arguments to userdel: %s" % (" ".join(cmd)))
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rc = subprocess.call(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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if rc == 0:
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return True
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else:
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return False
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def user_add(user, **kwargs):
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cmd = [USERADD]
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for key in kwargs:
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if key == 'uid' and kwargs[key] is not None:
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cmd.append('-u')
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cmd.append(kwargs[key])
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elif key == 'gid' and kwargs[key] is not None:
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cmd.append('-g')
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cmd.append(kwargs[key])
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elif key == 'comment' and kwargs[key] is not None:
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cmd.append('-c')
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cmd.append(kwargs[key])
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elif key == 'home' and kwargs[key] is not None:
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cmd.append('-d')
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cmd.append(kwargs[key])
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elif key == 'shell' and kwargs[key] is not None:
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cmd.append('-s')
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cmd.append(kwargs[key])
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elif key == 'password' and kwargs[key] is not None:
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cmd.append('-p')
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cmd.append(kwargs[key])
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elif key == 'createhome':
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if kwargs[key] is not None:
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if kwargs[key] == 'yes':
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cmd.append('-m')
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else:
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cmd.append('-M')
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cmd.append(user)
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debug("Arguments to useradd: %s" % (" ".join(cmd)))
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rc = subprocess.call(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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if rc == 0:
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return True
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else:
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return False
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def user_mod(user, **kwargs):
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cmd = [USERMOD]
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info = user_info(user)
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for key in kwargs:
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if key == 'uid':
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if kwargs[key] is not None and info[2] != int(kwargs[key]):
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cmd.append('-u')
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cmd.append(kwargs[key])
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elif key == 'gid':
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if kwargs[key] is not None and info[3] != int(kwargs[key]):
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cmd.append('-g')
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cmd.append(kwargs[key])
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elif key == 'comment':
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if kwargs[key] is not None and info[4] != kwargs[key]:
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cmd.append('-c')
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cmd.append(kwargs[key])
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elif key == 'home':
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if kwargs[key] is not None and info[5] != kwargs[key]:
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cmd.append('-d')
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cmd.append(kwargs[key])
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elif key == 'shell':
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if kwargs[key] is not None and info[6] != kwargs[key]:
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cmd.append('-s')
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cmd.append(kwargs[key])
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elif key == 'password':
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if kwargs[key] is not None and info[1] != kwargs[key]:
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cmd.append('-p')
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cmd.append(kwargs[key])
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# skip if no changes to be made
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if len(cmd) == 1:
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return False
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cmd.append(user)
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debug("Arguments to usermod: %s" % (" ".join(cmd)))
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rc = subprocess.call(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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if rc == 0:
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return True
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else:
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return False
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def user_exists(user):
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try:
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if pwd.getpwnam(user):
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return True
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except KeyError:
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return False
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def user_info(user):
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if not user_exists(user):
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return False
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try:
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info = list(pwd.getpwnam(user))
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sinfo = spwd.getspnam(user)
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except KeyError:
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return False
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info[1] = sinfo[1]
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return info
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# ===========================================
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if not os.path.exists(USERADD):
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if os.path.exists("/sbin/useradd"):
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USERADD = "/sbin/useradd"
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else:
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fail_json(msg="Cannot find useradd")
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if not os.path.exists(USERMOD):
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if os.path.exists("/sbin/usermod"):
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USERMOD = "/sbin/usermod"
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else:
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fail_json(msg="Cannot find usermod")
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if not os.path.exists(USERDEL):
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if os.path.exists("/sbin/userdel"):
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USERDEL = "/sbin/userdel"
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else:
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fail_json(msg="Cannot find userdel")
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argfile = sys.argv[1]
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args = open(argfile, 'r').read()
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items = shlex.split(args)
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if not len(items):
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fail_json(msg='the module requires arguments -a')
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sys.exit(1)
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params = {}
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for x in items:
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(k, v) = x.split("=")
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params[k] = v
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state = params.get('state','present')
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name = params.get('name', None)
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uid = params.get('uid', None)
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gid = params.get('gid', None)
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comment = params.get('comment', None)
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home = params.get('home', None)
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shell = params.get('shell', None)
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password = params.get('password', None)
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# ===========================================
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# following options are specific to userdel
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force = params.get('force', False)
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remove = params.get('remove', False)
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# ===========================================
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# following options are specific to useradd
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createhome = params.get('createhome', 'yes')
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if state not in [ 'present', 'absent' ]:
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fail_json(msg='invalid state')
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if createhome not in [ 'yes', 'no' ]:
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fail_json(msg='invalid createhome')
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if name is None:
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fail_json(msg='name is required')
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changed = False
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rc = 0
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if state == 'absent':
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if user_exists(name):
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changed = user_del(name, force=force, remove=remove)
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exit_json(name=name, changed=changed, force=force, remove=remove)
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elif state == 'present':
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if not user_exists(name):
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changed = user_add(name, uid=uid, gid=gid, comment=comment,
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home=home, shell=shell, password=password,
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createhome=createhome)
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else:
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changed = user_mod(name, uid=uid, gid=gid, comment=comment,
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home=home, shell=shell, password=password)
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if password is not None:
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exit_json(name=name, changed=changed, password="XXXXXXXX")
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else:
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exit_json(name=name, changed=changed)
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fail_json(name=name, msg='Unexpected position reached')
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sys.exit(0)
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