#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright: (c) 2017, F5 Networks Inc.
# GNU General Public License v3.0 (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'certified'}
DOCUMENTATION = r'''
---
module: bigip_firewall_rule_list
short_description: Manage AFM security firewall policies on a BIG-IP
description:
- Manages AFM security firewall policies on a BIG-IP.
version_added: 2.7
options:
name:
description:
- The name of the policy to create.
type: str
required: True
description:
description:
- The description to attach to the policy.
- This parameter is only supported on versions of BIG-IP >= 12.1.0. On earlier
versions it will simply be ignored.
type: str
state:
description:
- When C(state) is C(present), ensures that the rule list exists.
- When C(state) is C(absent), ensures that the rule list is removed.
type: str
choices:
- present
- absent
default: present
rules:
description:
- Specifies a list of rules that you want associated with this policy.
The order of this list is the order they will be evaluated by BIG-IP.
If the specified rules do not exist (for example when creating a new
policy) then they will be created.
- Rules specified here, if they do not exist, will be created with "default deny"
behavior. It is expected that you follow-up this module with the actual
configuration for these rules.
- The C(bigip_firewall_rule) module can be used to also create, as well as
edit, existing and new rules.
type: list
partition:
description:
- Device partition to manage resources on.
type: str
default: Common
extends_documentation_fragment: f5
author:
- Tim Rupp (@caphrim007)
'''
EXAMPLES = r'''
- name: Create a basic policy with some rule stubs
bigip_firewall_rule_list:
name: foo
rules:
- rule1
- rule2
- rule3
provider:
password: secret
server: lb.mydomain.com
user: admin
delegate_to: localhost
'''
RETURN = r'''
description:
description: The new description of the policy.
returned: changed
type: str
sample: My firewall policy
rules:
description: The list of rules, in the order that they are evaluated, on the device.
returned: changed
type: list
sample: ['rule1', 'rule2', 'rule3']
'''
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.basic import env_fallback
try:
from library.module_utils.network.f5.bigip import F5RestClient
from library.module_utils.network.f5.common import F5ModuleError
from library.module_utils.network.f5.common import AnsibleF5Parameters
from library.module_utils.network.f5.common import f5_argument_spec
from library.module_utils.network.f5.common import transform_name
except ImportError:
from ansible.module_utils.network.f5.bigip import F5RestClient
from ansible.module_utils.network.f5.common import F5ModuleError
from ansible.module_utils.network.f5.common import AnsibleF5Parameters
from ansible.module_utils.network.f5.common import f5_argument_spec
from ansible.module_utils.network.f5.common import transform_name
class Parameters(AnsibleF5Parameters):
api_map = {
'rulesReference': 'rules'
}
api_attributes = [
'description'
]
returnables = [
'description',
'rules',
]
updatables = [
'description',
'rules'
]
def to_return(self):
result = {}
try:
for returnable in self.returnables:
result[returnable] = getattr(self, returnable)
result = self._filter_params(result)
except Exception:
pass
return result
class ModuleParameters(Parameters):
@property
def rules(self):
if self._values['rules'] is None:
return None
# In case rule values are unicode (as they may be coming from the API
result = [str(x) for x in self._values['rules']]
return result
class ApiParameters(Parameters):
@property
def rules(self):
result = []
if self._values['rules'] is None or 'items' not in self._values['rules']:
return []
for idx, item in enumerate(self._values['rules']['items']):
result.append(dict(item=item['fullPath'], order=idx))
result = [x['item'] for x in sorted(result, key=lambda k: k['order'])]
return result
class Changes(Parameters):
pass
class UsableChanges(Changes):
pass
class ReportableChanges(Changes):
pass
class Difference(object):
def __init__(self, want, have=None):
self.want = want
self.have = have
def compare(self, param):
try:
result = getattr(self, param)
return result
except AttributeError:
return self.__default(param)
def __default(self, param):
attr1 = getattr(self.want, param)
try:
attr2 = getattr(self.have, param)
if attr1 != attr2:
return attr1
except AttributeError:
return attr1
@property
def rules(self):
if self.want.rules is None:
return None
if self.have.rules is None:
return self.want.rules
if set(self.want.rules) != set(self.have.rules):
return self.want.rules
class ModuleManager(object):
def __init__(self, *args, **kwargs):
self.module = kwargs.get('module', None)
self.client = F5RestClient(**self.module.params)
self.want = ModuleParameters(params=self.module.params)
self.have = ApiParameters()
self.changes = UsableChanges()
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 = Changes(params=changed)
def _update_changed_options(self):
diff = Difference(self.want, self.have)
updatables = Parameters.updatables
changed = dict()
for k in updatables:
change = diff.compare(k)
if change is None:
continue
else:
if isinstance(change, dict):
changed.update(change)
else:
changed[k] = change
if changed:
self.changes = Changes(params=changed)
return True
return False
def should_update(self):
result = self._update_changed_options()
if result:
return True
return False
def exec_module(self):
changed = False
result = dict()
state = self.want.state
if state == "present":
changed = self.present()
elif state == "absent":
changed = self.absent()
changes = self.changes.to_return()
result.update(**changes)
result.update(dict(changed=changed))
self._announce_deprecations(result)
return result
def _announce_deprecations(self, result):
warnings = result.pop('__warnings', [])
for warning in warnings:
self.module.deprecate(
msg=warning['msg'],
version=warning['version']
)
def present(self):
if self.exists():
return self.update()
else:
return self.create()
def exists(self):
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/{2}".format(
self.client.provider['server'],
self.client.provider['server_port'],
transform_name(self.want.partition, self.want.name)
)
resp = self.client.api.get(uri)
try:
response = resp.json()
except ValueError:
return False
if resp.status == 404 or 'code' in response and response['code'] == 404:
return False
return True
def update(self):
self.have = self.read_current_from_device()
if not self.should_update():
return False
if self.module.check_mode:
return True
self.update_on_device()
return True
def remove(self):
if self.module.check_mode:
return True
self.remove_from_device()
if self.exists():
raise F5ModuleError("Failed to delete the resource.")
return True
def create(self):
self._set_changed_options()
if self.module.check_mode:
return True
self.create_on_device()
return True
def create_on_device(self):
params = self.changes.api_params()
params['name'] = self.want.name
params['partition'] = self.want.partition
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/".format(
self.client.provider['server'],
self.client.provider['server_port']
)
resp = self.client.api.post(uri, json=params)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] in [400, 403]:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
if self.want.rules:
self._upsert_policy_rules_on_device()
return response['selfLink']
def update_on_device(self):
params = self.changes.api_params()
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/{2}".format(
self.client.provider['server'],
self.client.provider['server_port'],
transform_name(self.want.partition, self.want.name)
)
if params:
resp = self.client.api.patch(uri, json=params)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] == 400:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
return response['selfLink']
if self.changes.rules is not None:
self._upsert_policy_rules_on_device()
def absent(self):
if self.exists():
return self.remove()
return False
def remove_from_device(self):
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/{2}".format(
self.client.provider['server'],
self.client.provider['server_port'],
transform_name(self.want.partition, self.want.name)
)
resp = self.client.api.delete(uri)
if resp.status == 200:
return True
raise F5ModuleError(resp.content)
def read_current_from_device(self):
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/{2}/?expandSubcollections=true".format(
self.client.provider['server'],
self.client.provider['server_port'],
transform_name(self.want.partition, self.want.name)
)
resp = self.client.api.get(uri)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] == 400:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
return ApiParameters(params=response)
def rule_exists(self, rule):
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/{2}/rules/{3}".format(
self.client.provider['server'],
self.client.provider['server_port'],
transform_name(self.want.partition, self.want.name),
rule.replace('/', '_')
)
resp = self.client.api.get(uri)
try:
response = resp.json()
except ValueError:
return False
if resp.status == 404 or 'code' in response and response['code'] == 404:
return False
return True
def create_default_rule_on_device(self, rule):
params = dict(
name=rule.replace('/', '_'),
action='reject',
# Adding items to the end of the list causes the list of rules to match
# what the user specified in the original list.
placeAfter='last',
)
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/{2}/rules/".format(
self.client.provider['server'],
self.client.provider['server_port'],
transform_name(self.want.partition, self.want.name),
)
resp = self.client.api.post(uri, json=params)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] in [400, 403]:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
return response['selfLink']
def remove_rule_from_device(self, rule):
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/{2}/rules/{3}".format(
self.client.provider['server'],
self.client.provider['server_port'],
transform_name(self.want.partition, self.want.name),
rule.replace('/', '_'),
)
# this response returns no payload
resp = self.client.api.delete(uri)
if resp.status in [400, 403]:
raise F5ModuleError(resp.content)
def move_rule_to_front(self, rule):
params = dict(
placeAfter='last'
)
uri = "https://{0}:{1}/mgmt/tm/security/firewall/rule-list/{2}/rules/{3}".format(
self.client.provider['server'],
self.client.provider['server_port'],
transform_name(self.want.partition, self.want.name),
rule.replace('/', '_')
)
resp = self.client.api.patch(uri, json=params)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] in [400, 403]:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
return response['selfLink']
def _upsert_policy_rules_on_device(self):
rules = self.changes.rules
if rules is None:
rules = []
self._remove_rule_difference(rules)
for idx, rule in enumerate(rules):
if not self.rule_exists(rule):
self.create_default_rule_on_device(rule)
for idx, rule in enumerate(rules):
self.move_rule_to_front(rule)
def _remove_rule_difference(self, rules):
if rules is None or self.have.rules is None:
return
have_rules = set(self.have.rules)
want_rules = set(rules)
removable = have_rules.difference(want_rules)
for remove in removable:
self.remove_rule_from_device(remove)
class ArgumentSpec(object):
def __init__(self):
self.supports_check_mode = True
argument_spec = dict(
name=dict(required=True),
description=dict(),
rules=dict(type='list'),
partition=dict(
default='Common',
fallback=(env_fallback, ['F5_PARTITION'])
),
state=dict(
default='present',
choices=['present', 'absent']
)
)
self.argument_spec = {}
self.argument_spec.update(f5_argument_spec)
self.argument_spec.update(argument_spec)
def main():
spec = ArgumentSpec()
module = AnsibleModule(
argument_spec=spec.argument_spec,
supports_check_mode=spec.supports_check_mode,
)
try:
mm = ModuleManager(module=module)
results = mm.exec_module()
module.exit_json(**results)
except F5ModuleError as ex:
module.fail_json(msg=str(ex))
if __name__ == '__main__':
main()
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