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|
#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2017, Ansible by Red Hat, inc
#
# This file is part of Ansible by Red Hat
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
#
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'network'}
DOCUMENTATION = """
---
module: ios_user
version_added: "2.4"
author: "Trishna Guha (@trishnaguha)"
short_description: Manage the aggregate of local users on Cisco IOS device
description:
- This module provides declarative management of the local usernames
configured on network devices. It allows playbooks to manage
either individual usernames or the aggregate of usernames in the
current running config. It also supports purging usernames from the
configuration that are not explicitly defined.
notes:
- Tested against IOS 15.6
options:
aggregate:
description:
- The set of username objects to be configured on the remote
Cisco IOS device. The list entries can either be the username
or a hash of username and properties. This argument is mutually
exclusive with the C(name) argument.
aliases: ['users', 'collection']
name:
description:
- The username to be configured on the Cisco IOS device.
This argument accepts a string value and is mutually exclusive
with the C(aggregate) argument.
Please note that this option is not same as C(provider username).
configured_password:
description:
- The password to be configured on the Cisco IOS device. The
password needs to be provided in clear and it will be encrypted
on the device.
Please note that this option is not same as C(provider password).
update_password:
description:
- Since passwords are encrypted in the device running config, this
argument will instruct the module when to change the password. When
set to C(always), the password will always be updated in the device
and when set to C(on_create) the password will be updated only if
the username is created.
default: always
choices: ['on_create', 'always']
password_type:
description:
- This argument determines whether a 'password' or 'secret' will be
configured.
default: secret
choices: ['secret', 'password']
version_added: "2.8"
hashed_password:
description:
- This option allows configuring hashed passwords on Cisco IOS devices.
suboptions:
type:
description:
- Specifies the type of hash (e.g., 5 for MD5, 8 for PBKDF2, etc.)
- For this to work, the device needs to support the desired hash type
type: int
required: True
value:
description:
- The actual hashed password to be configured on the device
required: True
version_added: "2.8"
privilege:
description:
- The C(privilege) argument configures the privilege level of the
user when logged into the system. This argument accepts integer
values in the range of 1 to 15.
view:
description:
- Configures the view for the username in the
device running configuration. The argument accepts a string value
defining the view name. This argument does not check if the view
has been configured on the device.
aliases: ['role']
sshkey:
description:
- Specifies one or more SSH public key(s) to configure
for the given username.
- This argument accepts a valid SSH key value.
version_added: "2.7"
nopassword:
description:
- Defines the username without assigning
a password. This will allow the user to login to the system
without being authenticated by a password.
type: bool
purge:
description:
- Instructs the module to consider the
resource definition absolute. It will remove any previously
configured usernames on the device with the exception of the
`admin` user (the current defined set of users).
type: bool
default: false
state:
description:
- Configures the state of the username definition
as it relates to the device operational configuration. When set
to I(present), the username(s) should be configured in the device active
configuration and when set to I(absent) the username(s) should not be
in the device active configuration
default: present
choices: ['present', 'absent']
extends_documentation_fragment: ios
"""
EXAMPLES = """
- name: create a new user
ios_user:
name: ansible
nopassword: True
sshkey: "{{ lookup('file', '~/.ssh/id_rsa.pub') }}"
state: present
- name: create a new user with multiple keys
ios_user:
name: ansible
sshkey:
- "{{ lookup('file', '~/.ssh/id_rsa.pub') }}"
- "{{ lookup('file', '~/path/to/public_key') }}"
state: present
- name: remove all users except admin
ios_user:
purge: yes
- name: remove all users except admin and these listed users
ios_user:
aggregate:
- name: testuser1
- name: testuser2
- name: testuser3
purge: yes
- name: set multiple users to privilege level 15
ios_user:
aggregate:
- name: netop
- name: netend
privilege: 15
state: present
- name: set user view/role
ios_user:
name: netop
view: network-operator
state: present
- name: Change Password for User netop
ios_user:
name: netop
configured_password: "{{ new_password }}"
update_password: always
state: present
- name: Aggregate of users
ios_user:
aggregate:
- name: ansibletest2
- name: ansibletest3
view: network-admin
- name: Add a user specifying password type
ios_user:
name: ansibletest4
configured_password: "{{ new_password }}"
password_type: password
- name: Add a user with MD5 hashed password
ios_user:
name: ansibletest5
hashed_password:
type: 5
value: $3$8JcDilcYgFZi.yz4ApaqkHG2.8/
- name: Delete users with aggregate
ios_user:
aggregate:
- name: ansibletest1
- name: ansibletest2
- name: ansibletest3
state: absent
"""
RETURN = """
commands:
description: The list of configuration mode commands to send to the device
returned: always
type: list
sample:
- username ansible secret password
- username admin secret admin
"""
import base64
import hashlib
import re
from copy import deepcopy
from functools import partial
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.network.common.utils import remove_default_spec
from ansible.module_utils.network.ios.ios import get_config, load_config
from ansible.module_utils.network.ios.ios import ios_argument_spec, check_args
from ansible.module_utils.six import iteritems
def validate_privilege(value, module):
if value and not 1 <= value <= 15:
module.fail_json(msg='privilege must be between 1 and 15, got %s' % value)
def user_del_cmd(username):
return {
'command': 'no username %s' % username,
'prompt': 'This operation will remove all username related configurations with same name',
'answer': 'y',
'newline': False,
}
def sshkey_fingerprint(sshkey):
# IOS will accept a MD5 fingerprint of the public key
# and is easier to configure in a single line
# we calculate this fingerprint here
if not sshkey:
return None
if ' ' in sshkey:
# ssh-rsa AAA...== comment
keyparts = sshkey.split(' ')
keyparts[1] = hashlib.md5(base64.b64decode(keyparts[1])).hexdigest().upper()
return ' '.join(keyparts)
else:
# just the key, assume rsa type
return 'ssh-rsa %s' % hashlib.md5(base64.b64decode(sshkey)).hexdigest().upper()
def map_obj_to_commands(updates, module):
commands = list()
state = module.params['state']
update_password = module.params['update_password']
password_type = module.params['password_type']
def needs_update(want, have, x):
return want.get(x) and (want.get(x) != have.get(x))
def add(command, want, x):
command.append('username %s %s' % (want['name'], x))
def add_hashed_password(command, want, x):
command.append('username %s secret %s %s' % (want['name'], x.get('type'),
x.get('value')))
def add_ssh(command, want, x=None):
command.append('ip ssh pubkey-chain')
if x:
command.append('username %s' % want['name'])
for item in x:
command.append('key-hash %s' % item)
command.append('exit')
else:
command.append('no username %s' % want['name'])
command.append('exit')
for update in updates:
want, have = update
if want['state'] == 'absent':
if have['sshkey']:
add_ssh(commands, want)
else:
commands.append(user_del_cmd(want['name']))
if needs_update(want, have, 'view'):
add(commands, want, 'view %s' % want['view'])
if needs_update(want, have, 'privilege'):
add(commands, want, 'privilege %s' % want['privilege'])
if needs_update(want, have, 'sshkey'):
add_ssh(commands, want, want['sshkey'])
if needs_update(want, have, 'configured_password'):
if update_password == 'always' or not have:
if have and password_type != have['password_type']:
module.fail_json(msg='Can not have both a user password and a user secret.' +
' Please choose one or the other.')
add(commands, want, '%s %s' % (password_type, want['configured_password']))
if needs_update(want, have, 'hashed_password'):
add_hashed_password(commands, want, want['hashed_password'])
if needs_update(want, have, 'nopassword'):
if want['nopassword']:
add(commands, want, 'nopassword')
else:
add(commands, want, user_del_cmd(want['name']))
return commands
def parse_view(data):
match = re.search(r'view (\S+)', data, re.M)
if match:
return match.group(1)
def parse_sshkey(data, user):
sshregex = r'username %s(\n\s+key-hash .+$)+' % user
sshcfg = re.search(sshregex, data, re.M)
key_list = []
if sshcfg:
match = re.findall(r'key-hash (\S+ \S+(?: .+)?)$', sshcfg.group(), re.M)
if match:
key_list = match
return key_list
def parse_privilege(data):
match = re.search(r'privilege (\S+)', data, re.M)
if match:
return int(match.group(1))
def parse_password_type(data):
type = None
if data and data.split()[-3] in ['password', 'secret']:
type = data.split()[-3]
return type
def map_config_to_obj(module):
data = get_config(module, flags=['| section username'])
match = re.findall(r'(?:^(?:u|\s{2}u))sername (\S+)', data, re.M)
if not match:
return list()
instances = list()
for user in set(match):
regex = r'username %s .+$' % user
cfg = re.findall(regex, data, re.M)
cfg = '\n'.join(cfg)
obj = {
'name': user,
'state': 'present',
'nopassword': 'nopassword' in cfg,
'configured_password': None,
'hashed_password': None,
'password_type': parse_password_type(cfg),
'sshkey': parse_sshkey(data, user),
'privilege': parse_privilege(cfg),
'view': parse_view(cfg)
}
instances.append(obj)
return instances
def get_param_value(key, item, module):
# if key doesn't exist in the item, get it from module.params
if not item.get(key):
value = module.params[key]
# if key does exist, do a type check on it to validate it
else:
value_type = module.argument_spec[key].get('type', 'str')
type_checker = module._CHECK_ARGUMENT_TYPES_DISPATCHER[value_type]
type_checker(item[key])
value = item[key]
# validate the param value (if validator func exists)
validator = globals().get('validate_%s' % key)
if all((value, validator)):
validator(value, module)
return value
def map_params_to_obj(module):
users = module.params['aggregate']
if not users:
if not module.params['name'] and module.params['purge']:
return list()
elif not module.params['name']:
module.fail_json(msg='username is required')
else:
aggregate = [{'name': module.params['name']}]
else:
aggregate = list()
for item in users:
if not isinstance(item, dict):
aggregate.append({'name': item})
elif 'name' not in item:
module.fail_json(msg='name is required')
else:
aggregate.append(item)
objects = list()
for item in aggregate:
get_value = partial(get_param_value, item=item, module=module)
item['configured_password'] = get_value('configured_password')
item['hashed_password'] = get_value('hashed_password')
item['nopassword'] = get_value('nopassword')
item['privilege'] = get_value('privilege')
item['view'] = get_value('view')
item['sshkey'] = render_key_list(get_value('sshkey'))
item['state'] = get_value('state')
objects.append(item)
return objects
def render_key_list(ssh_keys):
key_list = []
if ssh_keys:
for item in ssh_keys:
key_list.append(sshkey_fingerprint(item))
return key_list
def update_objects(want, have):
updates = list()
for entry in want:
item = next((i for i in have if i['name'] == entry['name']), None)
if all((item is None, entry['state'] == 'present')):
updates.append((entry, {}))
elif item:
for key, value in iteritems(entry):
if value and value != item[key]:
updates.append((entry, item))
return updates
def main():
""" main entry point for module execution
"""
hashed_password_spec = dict(
type=dict(type='int', required=True),
value=dict(no_log=True, required=True)
)
element_spec = dict(
name=dict(),
configured_password=dict(no_log=True),
hashed_password=dict(no_log=True, type='dict', options=hashed_password_spec),
nopassword=dict(type='bool'),
update_password=dict(default='always', choices=['on_create', 'always']),
password_type=dict(default='secret', choices=['secret', 'password']),
privilege=dict(type='int'),
view=dict(aliases=['role']),
sshkey=dict(type='list'),
state=dict(default='present', choices=['present', 'absent'])
)
aggregate_spec = deepcopy(element_spec)
aggregate_spec['name'] = dict(required=True)
# remove default in aggregate spec, to handle common arguments
remove_default_spec(aggregate_spec)
argument_spec = dict(
aggregate=dict(type='list', elements='dict', options=aggregate_spec, aliases=['users', 'collection']),
purge=dict(type='bool', default=False)
)
argument_spec.update(element_spec)
argument_spec.update(ios_argument_spec)
mutually_exclusive = [('name', 'aggregate'), ('nopassword', 'hashed_password', 'configured_password')]
module = AnsibleModule(argument_spec=argument_spec,
mutually_exclusive=mutually_exclusive,
supports_check_mode=True)
warnings = list()
if module.params['password'] and not module.params['configured_password']:
warnings.append(
'The "password" argument is used to authenticate the current connection. ' +
'To set a user password use "configured_password" instead.'
)
check_args(module, warnings)
result = {'changed': False}
if warnings:
result['warnings'] = warnings
want = map_params_to_obj(module)
have = map_config_to_obj(module)
commands = map_obj_to_commands(update_objects(want, have), module)
if module.params['purge']:
want_users = [x['name'] for x in want]
have_users = [x['name'] for x in have]
for item in set(have_users).difference(want_users):
if item != 'admin':
commands.append(user_del_cmd(item))
result['commands'] = commands
if commands:
if not module.check_mode:
load_config(module, commands)
result['changed'] = True
module.exit_json(**result)
if __name__ == '__main__':
main()
|