1
0
Fork 0
mirror of https://github.com/ansible-collections/community.general.git synced 2024-09-14 20:13:21 +02:00
community.general/plugins/modules/net_tools/omapi_host.py

311 lines
11 KiB
Python
Raw Normal View History

2020-03-09 10:11:07 +01:00
#!/usr/bin/python
# -*- coding: utf-8 -*-
# copyright: (c) 2016, Loic Blot <loic.blot@unix-experience.fr>
# Sponsored by Infopro Digital. http://www.infopro-digital.com/
# Sponsored by E.T.A.I. http://www.etai.fr/
# 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
DOCUMENTATION = r'''
---
module: omapi_host
short_description: Setup OMAPI hosts.
description: Manage OMAPI hosts into compatible DHCPd servers
requirements:
- pypureomapi
author:
- Loic Blot (@nerzhul)
options:
state:
description:
- Create or remove OMAPI host.
type: str
required: true
choices: [ absent, present ]
hostname:
description:
- Sets the host lease hostname (mandatory if state=present).
type: str
aliases: [ name ]
host:
description:
- Sets OMAPI server host to interact with.
type: str
default: localhost
port:
description:
- Sets the OMAPI server port to interact with.
type: int
default: 7911
key_name:
description:
- Sets the TSIG key name for authenticating against OMAPI server.
type: str
required: true
key:
description:
- Sets the TSIG key content for authenticating against OMAPI server.
type: str
required: true
macaddr:
description:
- Sets the lease host MAC address.
type: str
required: true
ip:
description:
- Sets the lease host IP address.
type: str
statements:
description:
- Attach a list of OMAPI DHCP statements with host lease (without ending semicolon).
type: list
default: []
ddns:
description:
- Enable dynamic DNS updates for this host.
type: bool
default: no
'''
EXAMPLES = r'''
- name: Add a host using OMAPI
community.general.omapi_host:
2020-03-09 10:11:07 +01:00
key_name: defomapi
key: +bFQtBCta6j2vWkjPkNFtgA==
host: 10.98.4.55
macaddr: 44:dd:ab:dd:11:44
name: server01
ip: 192.168.88.99
ddns: yes
statements:
- filename "pxelinux.0"
- next-server 1.1.1.1
state: present
- name: Remove a host using OMAPI
community.general.omapi_host:
2020-03-09 10:11:07 +01:00
key_name: defomapi
key: +bFQtBCta6j2vWkjPkNFtgA==
host: 10.1.1.1
macaddr: 00:66:ab:dd:11:44
state: absent
'''
RETURN = r'''
lease:
description: dictionary containing host information
returned: success
type: complex
contains:
ip-address:
description: IP address, if there is.
returned: success
type: str
sample: '192.168.1.5'
hardware-address:
description: MAC address
returned: success
type: str
sample: '00:11:22:33:44:55'
hardware-type:
description: hardware type, generally '1'
returned: success
type: int
sample: 1
name:
description: hostname
returned: success
type: str
sample: 'mydesktop'
'''
import binascii
import socket
import struct
import traceback
PUREOMAPI_IMP_ERR = None
try:
from pypureomapi import Omapi, OmapiMessage, OmapiError, OmapiErrorNotFound
from pypureomapi import pack_ip, unpack_ip, pack_mac, unpack_mac
from pypureomapi import OMAPI_OP_STATUS, OMAPI_OP_UPDATE
pureomapi_found = True
except ImportError:
PUREOMAPI_IMP_ERR = traceback.format_exc()
pureomapi_found = False
from ansible.module_utils.basic import AnsibleModule, missing_required_lib
from ansible.module_utils._text import to_bytes, to_native
class OmapiHostManager:
def __init__(self, module):
self.module = module
self.omapi = None
self.connect()
def connect(self):
try:
self.omapi = Omapi(self.module.params['host'], self.module.params['port'], to_bytes(self.module.params['key_name']),
2020-03-09 10:11:07 +01:00
self.module.params['key'])
except binascii.Error:
self.module.fail_json(msg="Unable to open OMAPI connection. 'key' is not a valid base64 key.")
except OmapiError as e:
self.module.fail_json(msg="Unable to open OMAPI connection. Ensure 'host', 'port', 'key' and 'key_name' "
"are valid. Exception was: %s" % to_native(e))
except socket.error as e:
self.module.fail_json(msg="Unable to connect to OMAPI server: %s" % to_native(e))
def get_host(self, macaddr):
msg = OmapiMessage.open(to_bytes("host", errors='surrogate_or_strict'))
msg.obj.append((to_bytes("hardware-address", errors='surrogate_or_strict'), pack_mac(macaddr)))
msg.obj.append((to_bytes("hardware-type", errors='surrogate_or_strict'), struct.pack("!I", 1)))
response = self.omapi.query_server(msg)
if response.opcode != OMAPI_OP_UPDATE:
return None
return response
@staticmethod
def unpack_facts(obj):
result = dict(obj)
if 'hardware-address' in result:
result['hardware-address'] = to_native(unpack_mac(result[to_bytes('hardware-address')]))
2020-03-09 10:11:07 +01:00
if 'ip-address' in result:
result['ip-address'] = to_native(unpack_ip(result[to_bytes('ip-address')]))
2020-03-09 10:11:07 +01:00
if 'hardware-type' in result:
result['hardware-type'] = struct.unpack("!I", result[to_bytes('hardware-type')])
2020-03-09 10:11:07 +01:00
return result
def setup_host(self):
if self.module.params['hostname'] is None or len(self.module.params['hostname']) == 0:
self.module.fail_json(msg="name attribute could not be empty when adding or modifying host.")
msg = None
host_response = self.get_host(self.module.params['macaddr'])
# If host was not found using macaddr, add create message
if host_response is None:
msg = OmapiMessage.open(to_bytes('host', errors='surrogate_or_strict'))
msg.message.append((to_bytes('create'), struct.pack('!I', 1)))
msg.message.append((to_bytes('exclusive'), struct.pack('!I', 1)))
msg.obj.append((to_bytes('hardware-address'), pack_mac(self.module.params['macaddr'])))
msg.obj.append((to_bytes('hardware-type'), struct.pack('!I', 1)))
msg.obj.append((to_bytes('name'), to_bytes(self.module.params['hostname'])))
2020-03-09 10:11:07 +01:00
if self.module.params['ip'] is not None:
msg.obj.append((to_bytes("ip-address", errors='surrogate_or_strict'), pack_ip(self.module.params['ip'])))
stmt_join = ""
if self.module.params['ddns']:
stmt_join += 'ddns-hostname "{0}"; '.format(self.module.params['hostname'])
try:
if len(self.module.params['statements']) > 0:
stmt_join += "; ".join(self.module.params['statements'])
stmt_join += "; "
except TypeError as e:
self.module.fail_json(msg="Invalid statements found: %s" % to_native(e))
if len(stmt_join) > 0:
msg.obj.append((to_bytes('statements'), to_bytes(stmt_join)))
2020-03-09 10:11:07 +01:00
try:
response = self.omapi.query_server(msg)
if response.opcode != OMAPI_OP_UPDATE:
self.module.fail_json(msg="Failed to add host, ensure authentication and host parameters "
"are valid.")
self.module.exit_json(changed=True, lease=self.unpack_facts(response.obj))
except OmapiError as e:
self.module.fail_json(msg="OMAPI error: %s" % to_native(e))
# Forge update message
else:
response_obj = self.unpack_facts(host_response.obj)
fields_to_update = {}
if to_bytes('ip-address', errors='surrogate_or_strict') not in response_obj or \
unpack_ip(response_obj[to_bytes('ip-address', errors='surrogate_or_strict')]) != self.module.params['ip']:
fields_to_update['ip-address'] = pack_ip(self.module.params['ip'])
# Name cannot be changed
if 'name' not in response_obj or response_obj['name'] != self.module.params['hostname']:
self.module.fail_json(msg="Changing hostname is not supported. Old was %s, new is %s. "
"Please delete host and add new." %
(response_obj['name'], self.module.params['hostname']))
"""
# It seems statements are not returned by OMAPI, then we cannot modify them at this moment.
if 'statements' not in response_obj and len(self.module.params['statements']) > 0 or \
response_obj['statements'] != self.module.params['statements']:
with open('/tmp/omapi', 'w') as fb:
for (k,v) in iteritems(response_obj):
fb.writelines('statements: %s %s\n' % (k, v))
"""
if len(fields_to_update) == 0:
self.module.exit_json(changed=False, lease=response_obj)
else:
msg = OmapiMessage.update(host_response.handle)
msg.update_object(fields_to_update)
try:
response = self.omapi.query_server(msg)
if response.opcode != OMAPI_OP_STATUS:
self.module.fail_json(msg="Failed to modify host, ensure authentication and host parameters "
"are valid.")
self.module.exit_json(changed=True)
except OmapiError as e:
self.module.fail_json(msg="OMAPI error: %s" % to_native(e))
def remove_host(self):
try:
self.omapi.del_host(self.module.params['macaddr'])
self.module.exit_json(changed=True)
except OmapiErrorNotFound:
self.module.exit_json()
except OmapiError as e:
self.module.fail_json(msg="OMAPI error: %s" % to_native(e))
def main():
module = AnsibleModule(
argument_spec=dict(
state=dict(type='str', required=True, choices=['absent', 'present']),
host=dict(type='str', default="localhost"),
port=dict(type='int', default=7911),
key_name=dict(type='str', required=True),
key=dict(type='str', required=True, no_log=True),
macaddr=dict(type='str', required=True),
hostname=dict(type='str', aliases=['name']),
ip=dict(type='str'),
ddns=dict(type='bool', default=False),
statements=dict(type='list', default=[]),
),
supports_check_mode=False,
)
if not pureomapi_found:
module.fail_json(msg=missing_required_lib('pypureomapi'), exception=PUREOMAPI_IMP_ERR)
if module.params['key'] is None or len(module.params["key"]) == 0:
module.fail_json(msg="'key' parameter cannot be empty.")
if module.params['key_name'] is None or len(module.params["key_name"]) == 0:
module.fail_json(msg="'key_name' parameter cannot be empty.")
host_manager = OmapiHostManager(module)
try:
if module.params['state'] == 'present':
host_manager.setup_host()
elif module.params['state'] == 'absent':
host_manager.remove_host()
except ValueError as e:
module.fail_json(msg="OMAPI input value error: %s" % to_native(e))
if __name__ == '__main__':
main()