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community.general/plugins/modules/omapi_host.py
patchback[bot] cd50836977
[PR #11001/eb6337c0 backport][stable-11] omapi_host: fix bytes vs. str confusion (#11022)
omapi_host: fix bytes vs. str confusion (#11001)

* omapi_host: fix bytes vs. str confusion

After an update of the control node from Debian
bookworm to trixie, the omapi_host module fails to
work with the error message:

Key of type 'bytes' is not JSON serializable by the
'module_legacy_m2c' profile.

https://github.com/ansible/ansible/issues/85937 had the
same error, but the fix is a bit more intricate here
because the result dict is dynamically generated from
an API response object.

This also fixes unpacking the MAC and IP address and
hardware type, which were broken for Python3.

* Merge suggestion for changelog fragment



* do not unpack_ip twice

Noticed by Felix Fontein <felix@fontein.de>

* mention py3k in changelog fragment, too

---------


(cherry picked from commit eb6337c0c9)

Co-authored-by: mirabilos <tg@mirbsd.org>
Co-authored-by: Felix Fontein <felix@fontein.de>
2025-10-30 20:30:00 +01:00

320 lines
11 KiB
Python

#!/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 LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later
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)
extends_documentation_fragment:
- community.general.attributes
attributes:
check_mode:
support: none
diff_mode:
support: none
options:
state:
description:
- Create or remove OMAPI host.
type: str
required: true
choices: [absent, present]
hostname:
description:
- Sets the host lease hostname (mandatory if O(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
elements: str
default: []
ddns:
description:
- Enable dynamic DNS updates for this host.
type: bool
default: false
"""
EXAMPLES = r"""
- name: Add a host using OMAPI
community.general.omapi_host:
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: true
statements:
- filename "pxelinux.0"
- next-server 1.1.1.1
state: present
- name: Remove a host using OMAPI
community.general.omapi_host:
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 V(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.common.text.converters import to_bytes, to_native, to_text
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']),
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 = {}
for k, v in dict(obj).items():
result[to_text(k)] = v
if 'hardware-address' in result:
result['hardware-address'] = to_native(unpack_mac(result['hardware-address']))
if 'ip-address' in result:
result['ip-address'] = to_native(unpack_ip(result['ip-address']))
if 'hardware-type' in result:
result['hardware-type'] = struct.unpack("!I", result['hardware-type'])
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'])))
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)))
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 'ip-address' not in response_obj or \
response_obj['ip-address'] != 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', elements='str', 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()