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560 lines
19 KiB
Python
560 lines
19 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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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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DOCUMENTATION = '''
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---
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module: user
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author: Stephen Fromm
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version_added: 0.2
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short_description: Manage user accounts
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requirements: [ useradd, userdel, usermod ]
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description:
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- Manage user accounts and user attributes.
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options:
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name:
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required: true
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aliases: [ "user" ]
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description:
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- Name of the user to create, remove or modify.
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comment:
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required: false
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description:
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- Optionally sets the description (aka I(GECOS)) of user account.
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uid:
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required: false
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description:
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- Optionally sets the I(UID) of the user.
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group:
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required: false
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description:
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- Optionally sets the user's primary group (takes a group name).
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groups:
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required: false
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description:
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- Puts the user in this comma-delimited list of groups.
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append:
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required: false
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description:
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- If I(yes), will only add groups, not set them to just the list
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in I(groups).
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shell:
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required: false
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description:
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- Optionally set the user's shell.
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home:
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required: false
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description:
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- Optionally set the user's home directory.
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password:
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required: false
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description:
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- Optionally set the user's password to this crypted value. See
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the user example in the github examples directory for what this looks
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like in a playbook.
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state:
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required: false
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default: "present"
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choices: [ present, absent ]
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description:
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- Whether the account should exist. When I(absent), removes
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the user account.
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createhome:
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required: false
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default: "yes"
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choices: [ yes, no ]
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description:
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- Unless set to I(no), a home directory will be made for the user
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when the account is created.
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system:
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required: false
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default: "no"
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choices: [ yes, no ]
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description:
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- When creating an account, setting this to I(yes) makes the user a
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system account. This setting cannot be changed on existing users.
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force:
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required: false
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default: "no"
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choices: [ yes, no ]
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description:
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- When used with I(state=absent), behavior is as with
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I(userdel --force).
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remove:
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required: false
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default: "no"
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choices: [ yes, no ]
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description:
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- When used with I(state=absent), behavior is as with
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I(userdel --remove).
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ssh_key:
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required: false
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choices: [ generate ]
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version_added: "0.9"
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description:
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- Whether to generate a SSH key for the user in question.
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This will B(not) overwrite an existing SSH key.
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ssh_key_bits:
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required: false
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default: 2048
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version_added: "0.9"
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description:
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- Optionally specify number of bits in SSH key to create.
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ssh_key_type:
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required: false
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default: rsa
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version_added: "0.9"
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description:
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- Optionally specify the type of SSH key to generate.
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Available SSH key types will depend on implementation
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present on target host.
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ssh_key_file:
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required: false
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default: $HOME/.ssh/id_rsa
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version_added: "0.9"
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description:
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- Optionally specify the SSH key filename.
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ssh_key_comment:
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required: false
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default: ansible-generated
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version_added: "0.9"
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description:
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- Optionally define the comment for the SSH key.
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ssh_key_passphrase:
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required: false
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version_added: "0.9"
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description:
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- Set a passphrase for the SSH key. If no
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passphrase is provided, the SSH key will default to
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having no passphrase.
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examples:
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- code: 'user: name=johnd comment="John Doe" uid=1040'
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description: "Add the user 'johnd' with a specific uid and a primary group of 'admin'"
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- code: "user: name=johnd state=absent remove=yes"
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description: "Remove the user 'johnd'"
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- code: 'user: name=jsmith ssh_key=generate ssh_key_bits=2048'
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description: "Create a 2048-bit SSH key for user jsmith"
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'''
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import os
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import pwd
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import grp
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try:
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import spwd
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HAVE_SPWD=True
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except:
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HAVE_SPWD=False
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SHADOWFILE = '/etc/shadow'
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if os.path.exists('/etc/master.passwd'):
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SHADOWFILE = '/etc/master.passwd' # FreeBSD passwd
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# Note: while the above has the correct location for where
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# encrypted passwords are stored on FreeBSD, the code below doesn't
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# invoke adduser in lieu of useradd, nor pw in lieu of usermod.
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# That is, this won't work on FreeBSD.
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def user_del(module, user, **kwargs):
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cmd = [module.get_bin_path('userdel', True)]
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for key in kwargs:
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if key == 'force' and module.boolean(kwargs[key]):
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cmd.append('-f')
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elif key == 'remove' and module.boolean(kwargs[key]):
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cmd.append('-r')
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cmd.append(user)
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p = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(out, err) = p.communicate()
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rc = p.returncode
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return (rc, out, err)
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def user_add(module, user, **kwargs):
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cmd = [module.get_bin_path('useradd', True)]
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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 == 'group' and kwargs[key] is not None:
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if not group_exists(kwargs[key]):
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module.fail_json(msg="Group %s does not exist" % (kwargs[key]))
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cmd.append('-g')
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cmd.append(kwargs[key])
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elif key == 'groups' and kwargs[key] is not None:
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for g in kwargs[key].split(','):
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if not group_exists(g):
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module.fail_json(msg="Group %s does not exist" % (g))
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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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value = module.boolean(kwargs[key])
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if value:
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cmd.append('-m')
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else:
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cmd.append('-M')
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elif key == 'system' and module.boolean(kwargs[key]):
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cmd.append('-r')
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cmd.append(user)
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p = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(out, err) = p.communicate()
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rc = p.returncode
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return (rc, out, err)
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"""
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Without spwd, we would have to resort to reading /etc/shadow
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to get the encrypted string. For now, punt on idempotent password changes.
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"""
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def user_mod(module, user, **kwargs):
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cmd = [module.get_bin_path('usermod', True)]
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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 == 'group' and kwargs[key] is not None:
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if not group_exists(kwargs[key]):
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module.fail_json(msg="Group %s does not exist" % (kwargs[key]))
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ginfo = group_info(kwargs[key])
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if info[3] != ginfo[2]:
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cmd.append('-g')
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cmd.append(kwargs[key])
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elif key == 'groups' and kwargs[key] is not None:
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current_groups = user_group_membership(user)
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groups = kwargs[key].split(',')
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for g in groups:
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if not group_exists(g):
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module.fail_json(msg="Group %s does not exist" % (g))
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group_diff = set(sorted(current_groups)).symmetric_difference(set(sorted(groups)))
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groups_need_mod = False
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if group_diff:
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if kwargs['append'] is not None and module.boolean(kwargs['append']):
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for g in groups:
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if g in group_diff:
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cmd.append('-a')
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groups_need_mod = True
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else:
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groups_need_mod = True
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if groups_need_mod:
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cmd.append('-G')
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cmd.append(','.join(groups))
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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 (None, '', '')
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cmd.append(user)
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p = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(out, err) = p.communicate()
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rc = p.returncode
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return (rc, out, err)
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def group_exists(group):
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try:
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if group.isdigit():
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if grp.getgrgid(group):
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return True
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else:
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if grp.getgrnam(group):
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return True
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except KeyError:
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return False
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def group_info(group):
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if not group_exists(group):
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return False
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if group.isdigit():
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return list(grp.getgrgid(group))
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else:
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return list(grp.getgrnam(group))
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def user_group_membership(user):
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groups = []
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info = get_pwd_info(user)
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for group in grp.getgrall():
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if user in group[3]:
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groups.append(group[0])
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return groups
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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 get_pwd_info(user):
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if not user_exists(user):
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return False
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return list(pwd.getpwnam(user))
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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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info = get_pwd_info(user)
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if len(info[1]) == 1 or len(info[1]) == 0:
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info[1] = user_password(user)
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return info
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def user_password(user):
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passwd = ''
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if not user_exists(user):
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return passwd
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if HAVE_SPWD:
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try:
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passwd = spwd.getspnam(user)[1]
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except KeyError:
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return passwd
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else:
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# Read shadow file for user's encrypted password string
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if os.path.exists(SHADOWFILE) and os.access(SHADOWFILE, os.R_OK):
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for line in open(SHADOWFILE).readlines():
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if line.startswith('%s:' % user):
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passwd = line.split(':')[1]
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return passwd
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def get_ssh_key_path(user, ssh_file):
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info = user_info(user)
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if os.path.isabs(ssh_file):
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ssh_key_file = ssh_file
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else:
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ssh_key_file = os.path.join(info[5], ssh_file)
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return ssh_key_file
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def ssh_key_gen(module, user, ssh):
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info = user_info(user)
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if not os.path.exists(info[5]):
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return (1, '', 'User %s home directory does not exist' % user)
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ssh_key_file = get_ssh_key_path(user, ssh['file'])
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ssh_dir = os.path.dirname(ssh_key_file)
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if not os.path.exists(ssh_dir):
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try:
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os.mkdir(ssh_dir, 0700)
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except OSError, e:
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return (1, '', 'Failed to create %s: %s' % (ssh_dir, str(e)))
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if os.path.exists(ssh_key_file):
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return (None, 'Key already exists', '')
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cmd = [module.get_bin_path('ssh-keygen', True)]
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for key in ssh:
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if key == 'type' and ssh[key] is not None:
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cmd.append('-t')
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cmd.append(ssh[key])
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elif key == 'bits' and ssh[key] is not None:
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cmd.append('-b')
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cmd.append(ssh[key])
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elif key == 'comment' and ssh[key] is not None:
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cmd.append('-C')
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cmd.append(ssh[key])
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elif key == 'file' and ssh[key] is not None:
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cmd.append('-f')
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cmd.append(ssh_key_file)
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elif key == 'passphrase':
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cmd.append('-N')
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if ssh[key] is not None:
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cmd.append(ssh['passphrase'])
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else:
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cmd.append('')
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p = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(out, err) = p.communicate()
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rc = p.returncode
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return (rc, out, err)
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def ssh_key_fingerprint(module, user, ssh):
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ssh_key_file = get_ssh_key_path(user, ssh['file'])
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if not os.path.exists(ssh_key_file):
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return (1, 'SSH Key file %s does not exist' % ssh_key_file, '')
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cmd = [module.get_bin_path('ssh-keygen', True)]
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cmd.append('-l')
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cmd.append('-f')
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cmd.append(ssh_key_file)
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p = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(out, err) = p.communicate()
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rc = p.returncode
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return (rc, out, err)
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# ===========================================
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def main():
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ssh_defaults = {
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'bits': '2048',
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'type': 'rsa',
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'passphrase': None,
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'comment': 'ansible-generated'
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}
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ssh_defaults['file'] = os.path.join('.ssh', 'id_%s' % ssh_defaults['type'])
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ssh = dict(ssh_defaults)
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module = AnsibleModule(
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argument_spec = dict(
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state=dict(default='present', choices=['present', 'absent']),
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name=dict(required=True, aliases=['user']),
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uid=dict(default=None),
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group=dict(default=None),
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groups=dict(default=None),
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comment=dict(default=None),
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home=dict(default=None),
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shell=dict(default=None),
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password=dict(default=None),
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# following options are specific to userdel
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force=dict(default='no', choices=BOOLEANS),
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remove=dict(default='no', choices=BOOLEANS),
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# following options are specific to useradd
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createhome=dict(default='yes', choices=BOOLEANS),
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system=dict(default='no', choices=BOOLEANS),
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# following options are specific to usermod
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append=dict(default='no', choices=BOOLEANS),
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# following are specific to ssh key generation
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ssh_key=dict(choices=['generate']),
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ssh_key_bits=dict(default=ssh_defaults['bits']),
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ssh_key_type=dict(default=ssh_defaults['type']),
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ssh_key_file=dict(default=ssh_defaults['file']),
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ssh_key_comment=dict(default=ssh_defaults['comment']),
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ssh_key_passphrase=dict(default=None)
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)
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)
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state = module.params['state']
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name = module.params['name']
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uid = module.params['uid']
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group = module.params['group']
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groups = module.params['groups']
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comment = module.params['comment']
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home = module.params['home']
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shell = module.params['shell']
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password = module.params['password']
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force = module.params['force']
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remove = module.params['remove']
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createhome = module.params['createhome']
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system = module.params['system']
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append = module.params['append']
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sshkeygen = module.params['ssh_key']
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ssh['bits'] = module.params['ssh_key_bits']
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ssh['type'] = module.params['ssh_key_type']
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ssh['file'] = module.params['ssh_key_file']
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ssh['comment'] = module.params['ssh_key_comment']
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ssh['passphrase'] = module.params['ssh_key_passphrase']
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# If using default filename, make sure it is named appropriately
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if ssh['file'] == ssh_defaults['file']:
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ssh['file'] = os.path.join('.ssh', 'id_%s' % ssh_defaults['type'])
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rc = None
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out = ''
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err = ''
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result = {}
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result['name'] = name
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result['state'] = state
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if state == 'absent':
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if user_exists(name):
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(rc, out, err) = user_del(module, name, force=force, remove=remove)
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if rc != 0:
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module.fail_json(name=name, msg=err, rc=rc)
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result['force'] = force
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|
result['remove'] = remove
|
|
elif state == 'present':
|
|
if not user_exists(name):
|
|
(rc, out, err) = user_add(module,
|
|
name, uid=uid, group=group, groups=groups,
|
|
comment=comment, home=home, shell=shell,
|
|
password=password, createhome=createhome,
|
|
system=system)
|
|
result['system'] = system
|
|
result['createhome'] = createhome
|
|
else:
|
|
(rc, out, err) = user_mod(module,
|
|
name, uid=uid, group=group, groups=groups,
|
|
comment=comment, home=home, shell=shell,
|
|
password=password, append=append)
|
|
result['append'] = append
|
|
if rc is not None and rc != 0:
|
|
module.fail_json(name=name, msg=err, rc=rc)
|
|
if password is not None:
|
|
result['password'] = 'NOT_LOGGING_PASSWORD'
|
|
|
|
if rc is None:
|
|
result['changed'] = False
|
|
else:
|
|
result['changed'] = True
|
|
if out:
|
|
result['stdout'] = out
|
|
if err:
|
|
result['stderr'] = err
|
|
if user_exists(name):
|
|
info = user_info(name)
|
|
if info == False:
|
|
result['msg'] = "failed to look up user name: %s" % name
|
|
result['failed'] = True
|
|
result['uid'] = info[2]
|
|
result['group'] = info[3]
|
|
result['comment'] = info[4]
|
|
result['home'] = info[5]
|
|
result['shell'] = info[6]
|
|
groups = user_group_membership(name)
|
|
result['uid'] = info[2]
|
|
if len(groups) > 0:
|
|
result['groups'] = groups
|
|
if sshkeygen:
|
|
(rc, out, err) = ssh_key_gen(module, name, ssh)
|
|
if rc is not None and rc != 0:
|
|
module.fail_json(name=name, msg=err, rc=rc)
|
|
if rc == 0:
|
|
result['changed'] = True
|
|
(rc, out, err) = ssh_key_fingerprint(module, name, ssh)
|
|
if rc == 0:
|
|
result['ssh_fingerprint'] = out.strip()
|
|
else:
|
|
result['ssh_fingerprint'] = err.strip()
|
|
result['ssh_key_file'] = get_ssh_key_path(name, ssh['file'])
|
|
|
|
|
|
module.exit_json(**result)
|
|
|
|
# include magic from lib/ansible/module_common.py
|
|
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
|
|
main()
|