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Adds the bigip_user module to Ansible (#24753)

Browse source 
The patch adds the bigip_user module to Ansible to support managing
users on an F5 BIG-IP.

Unit tests are provided. Integration tests can be found here

  * https://github.com/F5Networks/f5-ansible/blob/devel/test/integration/bigip_user.yaml
  * https://github.com/F5Networks/f5-ansible/tree/devel/test/integration/targets/bigip_user/tasks
This commit is contained in:
Tim Rupp 2017-05-18 12:21:18 -07:00 • committed by John R Barker
commit c1397626fc
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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright 2017 F5 Networks Inc.
#
# This file is part of Ansible
#
# 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 = {
'status': ['preview'],
'supported_by': 'community',
'metadata_version': '1.0'
}
DOCUMENTATION = '''
---
module: bigip_user
short_description: Manage user accounts and user attributes on a BIG-IP.
description:
- Manage user accounts and user attributes on a BIG-IP.
version_added: "2.4"
options:
full_name:
description:
- Full name of the user.
required: false
username_credential:
description:
- Name of the user to create, remove or modify.
required: true
aliases:
- name
password_credential:
description:
- Set the users password to this unencrypted value.
C(password_credential) is required when creating a new account.
default: None
required: false
shell:
description:
- Optionally set the users shell.
required: false
default: None
choices:
- bash
- none
- tmsh
partition_access:
description:
- Specifies the administrative partition to which the user has access.
C(partition_access) is required when creating a new account.
Should be in the form "partition:role". Valid roles include
C(acceleration-policy-editor), C(admin), C(application-editor), C(auditor)
C(certificate-manager), C(guest), C(irule-manager), C(manager), C(no-access)
C(operator), C(resource-admin), C(user-manager), C(web-application-security-administrator),
and C(web-application-security-editor). Partition portion of tuple should
be an existing partition or the value 'all'.
required: false
default: None
state:
description:
- Whether the account should exist or not, taking action if the state is
different from what is stated.
required: false
default: present
choices:
- present
- absent
update_password:
description:
- C(always) will allow to update passwords if the user chooses to do so.
C(on_create) will only set the password for newly created users.
required: false
default: on_create
choices:
- always
- on_create
notes:
- Requires the requests Python package on the host. This is as easy as
pip install requests
- Requires BIG-IP versions >= 12.0.0
extends_documentation_fragment: f5
requirements:
- f5-sdk
author:
- Tim Rupp (@caphrim007)
- Wojciech Wypior (@wojtek0806)
'''
EXAMPLES = '''
- name: Add the user 'johnd' as an admin
bigip_user:
server: "lb.mydomain.com"
user: "admin"
password: "secret"
username_credential: "johnd"
password_credential: "password"
full_name: "John Doe"
partition_access: "all:admin"
update_password: "on_create"
state: "present"
delegate_to: localhost
- name: Change the user "johnd's" role and shell
bigip_user:
server: "lb.mydomain.com"
user: "admin"
password: "secret"
username_credential: "johnd"
partition_access: "NewPartition:manager"
shell: "tmsh"
state: "present"
delegate_to: localhost
- name: Make the user 'johnd' an admin and set to advanced shell
bigip_user:
server: "lb.mydomain.com"
user: "admin"
password: "secret"
name: "johnd"
partition_access: "all:admin"
shell: "bash"
state: "present"
delegate_to: localhost
- name: Remove the user 'johnd'
bigip_user:
server: "lb.mydomain.com"
user: "admin"
password: "secret"
name: "johnd"
state: "absent"
delegate_to: localhost
- name: Update password
bigip_user:
server: "lb.mydomain.com"
user: "admin"
password: "secret"
state: "present"
username_credential: "johnd"
password_credential: "newsupersecretpassword"
delegate_to: localhost
# Note that the second time this task runs, it would fail because
# The password has been changed. Therefore, it is recommended that
# you either,
#
# * Put this in its own playbook that you run when you need to
# * Put this task in a `block`
# * Include `ignore_errors` on this task
- name: Change the Admin password
bigip_user:
server: "lb.mydomain.com"
user: "admin"
password: "secret"
state: "present"
username_credential: "admin"
password_credential: "NewSecretPassword"
delegate_to: localhost
'''
RETURN = '''
full_name:
description: Full name of the user
returned: changed and success
type: string
sample: "John Doe"
partition_access:
description:
- List of strings containing the user's roles and which partitions they
are applied to. They are specified in the form "partition:role".
returned: changed and success
type: list
sample: "['all:admin']"
shell:
description: The shell assigned to the user account
returned: changed and success
type: string
sample: "tmsh"
'''
from distutils.version import LooseVersion
from ansible.module_utils.f5_utils import (
AnsibleF5Client,
AnsibleF5Parameters,
HAS_F5SDK,
F5ModuleError,
iControlUnexpectedHTTPError
)
class Parameters(AnsibleF5Parameters):
api_map = {
'partitionAccess': 'partition_access',
'description': 'full_name',
}
updatables = [
'partition_access', 'full_name', 'shell', 'password_credential'
]
returnables = [
'shell', 'partition_access', 'full_name', 'username_credential'
]
api_attributes = [
'shell', 'partitionAccess', 'description', 'name', 'password'
]
@property
def partition_access(self):
"""Partition access values will require some transformation.
This operates on both user and device returned values.
Check if the element is a string from user input in the format of
name:role, if it is split it and create dictionary out of it.
If the access value is a dictionary (returned from device,
or already processed) and contains nameReference
key, delete it and append the remaining dictionary element into
a list.
If the nameReference key is removed just append the dictionary
into the list.
:returns list of dictionaries
"""
if self._values['partition_access'] is None:
return
result = []
part_access = self._values['partition_access']
for access in part_access:
if isinstance(access, dict):
if 'nameReference' in access:
del access['nameReference']
result.append(access)
else:
result.append(access)
if isinstance(access, str):
acl = access.split(':')
if acl[0].lower() == 'all':
acl[0] = 'all-partitions'
value = dict(
name=acl[0],
role=acl[1]
)
result.append(value)
return result
def to_return(self):
result = {}
for returnable in self.returnables:
result[returnable] = getattr(self, returnable)
result = self._filter_params(result)
return result
def api_params(self):
result = {}
for api_attribute in self.api_attributes:
if api_attribute in self.api_map:
result[api_attribute] = getattr(
self, self.api_map[api_attribute])
elif api_attribute == 'password':
result[api_attribute] = self._values['password_credential']
else:
result[api_attribute] = getattr(self, api_attribute)
result = self._filter_params(result)
return result
class ModuleManager(object):
def __init__(self, client):
self.client = client
def exec_module(self):
if self.is_version_less_than_13():
manager = UnparitionedManager(self.client)
else:
manager = PartitionedManager(self.client)
return manager.exec_module()
def is_version_less_than_13(self):
"""Checks to see if the TMOS version is less than 13
Anything less than BIG-IP 13.x does not support users
on different partitions.
:return: Bool
"""
version = self.client.api.tmos_version
if LooseVersion(version) < LooseVersion('13.0.0'):
return True
else:
return False
class BaseManager(object):
def __init__(self, client):
self.client = client
self.have = None
self.want = Parameters(self.client.module.params)
self.changes = Parameters()
def exec_module(self):
changed = False
result = dict()
state = self.want.state
try:
if state == "present":
changed = self.present()
elif state == "absent":
changed = self.absent()
except iControlUnexpectedHTTPError as e:
raise F5ModuleError(str(e))
changes = self.changes.to_return()
result.update(**changes)
result.update(dict(changed=changed))
return result
def _set_changed_options(self):
changed = {}
for key in Parameters.returnables:
if getattr(self.want, key) is not None:
changed[key] = getattr(self.want, key)
if changed:
self.changes = Parameters(changed)
def _update_changed_options(self):
changed = {}
for key in Parameters.updatables:
if getattr(self.want, key) is not None:
if key == 'password_credential':
new_pass = getattr(self.want, key)
if self.want.update_password == 'always':
changed[key] = new_pass
else:
# We set the shell parameter to 'none' when bigip does
# not return it.
if self.want.shell == 'bash':
self.validate_shell_parameter()
if self.want.shell == 'none' and \
self.have.shell is None:
self.have.shell = 'none'
attr1 = getattr(self.want, key)
attr2 = getattr(self.have, key)
if attr1 != attr2:
changed[key] = attr1
if changed:
self.changes = Parameters(changed)
return True
return False
def validate_shell_parameter(self):
"""Method to validate shell parameters.
Raise when shell attribute is set to 'bash' with roles set to
either 'admin' or 'resource-admin'.
NOTE: Admin and Resource-Admin roles automatically enable access to
all partitions, removing any other roles that the user might have
had. There are few other roles which do that but those roles,
do not allow bash.
"""
err = "Shell access is only available to " \
"'admin' or 'resource-admin' roles"
permit = ['admin', 'resource-admin']
if self.have is not None:
have = self.have.partition_access
if not any(r['role'] for r in have if r['role'] in permit):
raise F5ModuleError(err)
# This check is needed if we want to modify shell AND
# partition_access attribute.
# This check will also trigger on create.
if self.want.partition_access is not None:
want = self.want.partition_access
if not any(r['role'] for r in want if r['role'] in permit):
raise F5ModuleError(err)
def present(self):
if self.exists():
return self.update()
else:
return self.create()
def absent(self):
if self.exists():
return self.remove()
return False
def should_update(self):
result = self._update_changed_options()
if result:
return True
return False
def validate_create_parameters(self):
"""Password credentials and partition access are mandatory,
when creating a user resource.
"""
if self.want.password_credential and \
self.want.update_password != 'on_create':
err = "The 'update_password' option " \
"needs to be set to 'on_create' when creating " \
"a resource with a password."
raise F5ModuleError(err)
if self.want.partition_access is None:
err = "The 'partition_access' option " \
"is required when creating a resource."
raise F5ModuleError(err)
def update(self):
self.have = self.read_current_from_device()
if not self.should_update():
return False
if self.client.check_mode:
return True
self.update_on_device()
return True
def remove(self):
if self.client.check_mode:
return True
self.remove_from_device()
if self.exists():
raise F5ModuleError("Failed to delete the user")
return True
def create(self):
self.validate_create_parameters()
if self.want.shell == 'bash':
self.validate_shell_parameter()
self._set_changed_options()
if self.client.check_mode:
return True
self.create_on_device()
return True
class UnparitionedManager(BaseManager):
def create_on_device(self):
params = self.want.api_params()
self.client.api.tm.auth.users.user.create(**params)
def update_on_device(self):
params = self.want.api_params()
result = self.client.api.tm.auth.users.user.load(name=self.want.name)
result.modify(**params)
def read_current_from_device(self):
tmp_res = self.client.api.tm.auth.users.user.load(name=self.want.name)
result = tmp_res.attrs
return Parameters(result)
def exists(self):
return self.client.api.tm.auth.users.user.exists(name=self.want.name)
def remove_from_device(self):
result = self.client.api.tm.auth.users.user.load(name=self.want.name)
if result:
result.delete()
class PartitionedManager(BaseManager):
def create_on_device(self):
params = self.want.api_params()
self.client.api.tm.auth.users.user.create(
partition=self.want.partition, **params
)
def _read_one_resource_from_collection(self):
collection = self.client.api.tm.auth.users.get_collection(
requests_params=dict(
params="$filter=partition+eq+'{0}'".format(self.want.partition)
)
)
collection = [x for x in collection if x.name == self.want.name]
if len(collection) == 1:
resource = collection.pop()
return resource
elif len(collection) == 0:
raise F5ModuleError(
"No accounts with the provided name were found"
)
else:
raise F5ModuleError(
"Multiple users with the provided name were found!"
)
def update_on_device(self):
params = self.want.api_params()
try:
resource = self._read_one_resource_from_collection()
resource.modify(**params)
except iControlUnexpectedHTTPError as ex:
# TODO: Patch this in the F5 SDK so that I dont need this check
if 'updated successfully' not in str(ex):
raise F5ModuleError(
"Failed to update the specified user"
)
def read_current_from_device(self):
resource = self._read_one_resource_from_collection()
result = resource.attrs
return Parameters(result)
def exists(self):
collection = self.client.api.tm.auth.users.get_collection(
requests_params=dict(
params="$filter=partition+eq+'{0}'".format(self.want.partition)
)
)
collection = [x for x in collection if x.name == self.want.name]
if len(collection) == 1:
result = True
elif len(collection) == 0:
result = False
else:
raise F5ModuleError(
"Multiple users with the provided name were found!"
)
return result
def remove_from_device(self):
resource = self._read_one_resource_from_collection()
if resource:
resource.delete()
class ArgumentSpec(object):
def __init__(self):
self.supports_check_mode = True
self.argument_spec = dict(
name=dict(
required=True,
aliases=['username_credential']
),
password_credential=dict(
required=False,
default=None,
no_log=True,
),
partition_access=dict(
required=False,
default=None,
type='list'
),
full_name=dict(
required=False,
default=None
),
shell=dict(
required=False,
default=None,
choices=['none', 'bash', 'tmsh']
),
update_password=dict(
required=False,
default='always',
choices=['always', 'on_create']
)
)
self.f5_product_name = 'bigip'
def main():
if not HAS_F5SDK:
raise F5ModuleError("The python f5-sdk module is required")
spec = ArgumentSpec()
client = AnsibleF5Client(
argument_spec=spec.argument_spec,
supports_check_mode=spec.supports_check_mode,
f5_product_name=spec.f5_product_name
)
try:
mm = ModuleManager(client)
results = mm.exec_module()
client.module.exit_json(**results)
except F5ModuleError as e:
client.module.fail_json(msg=str(e))
if __name__ == '__main__':
main()