ansible.utils/plugins/filter/ipv4.py

# -*- coding: utf-8 -*-
# Copyright 2021 Red Hat
# GNU General Public License v3.0+
# (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

"""
filter plugin file for ipaddr filters: ipv4
"""
from __future__ import absolute_import, division, print_function
from functools import partial
from ansible_collections.ansible.utils.plugins.plugin_utils.base.ipaddr_utils import (
    ipaddr,
    _need_netaddr,
)
from ansible.errors import AnsibleFilterError
from ansible.errors import AnsibleError
from ansible_collections.ansible.utils.plugins.module_utils.common.argspec_validate import (
    AnsibleArgSpecValidator,
)

__metaclass__ = type


try:
    from jinja2.filters import pass_environment
except ImportError:
    from jinja2.filters import environmentfilter as pass_environment

try:
    import netaddr
except ImportError:
    # in this case, we'll make the filters return error messages (see bottom)
    netaddr = None
else:

    class mac_linux(netaddr.mac_unix):
        pass

    mac_linux.word_fmt = "%.2x"

DOCUMENTATION = """
    name: ipv4
    author: Ashwini Mhatre (@amhatre)
    version_added: "2.5.0"
    short_description: To filter only Ipv4 addresses Ipv4 filter is used.
    description:
        - Sometimes you need only IPv4 addresses. To filter only Ipv4 addresses Ipv4 filter is used.
    options:
        value:
            description:
            - list of subnets or individual address or any other values input for ipv4 plugin
            type: raw
            required: True
        query:
            description:
            - You can provide a single argument to each ipv4() filter.
            - Example. query type 'ipv6' to convert ipv4 into ipv6
            type: str
            default: ''
    notes:
"""

EXAMPLES = r"""
#### examples
# Ipv4 filter plugin with different queries.
- name: Set value as input list
  ansible.builtin.set_fact:
    value:
      - 192.24.2.1
      - host.fqdn
      - ::1
      - ''
      - 192.168.32.0/24
      - fe80::100/10
      - 42540766412265424405338506004571095040/64
      - True
- name: IPv4 filter to filter Ipv4 Address
  debug:
    msg: "{{ value|ansible.utils.ipv4 }}"

- name: convert IPv4 addresses into IPv6 addresses.
  debug:
    msg: "{{ value|ansible.utils.ipv4('ipv6') }}"

- name: convert IPv4 addresses into IPv6 addresses.
  debug:
    msg: "{{ value|ansible.utils.ipv4('address') }}"


# PLAY [Ipv4 filter plugin with different queries.] ******************************************************************
# TASK [Set value as input list] ***************************************************************************************
# ok: [localhost] => {"ansible_facts": {"value": ["192.24.2.1", "host.fqdn", "::1", "", "192.168.32.0/24",
# "fe80::100/10", "42540766412265424405338506004571095040/64", true]}, "changed": false}
# TASK [IPv4 filter to filter Ipv4 Address] *******************************************************************
# ok: [localhost] => {
#     "msg": [
#         "192.24.2.1",
#         "192.168.32.0/24"
#     ]
# }
#
# TASK [convert IPv4 addresses into IPv6 addresses.] **********************************************************
# ok: [localhost] => {
#     "msg": [
#         "::ffff:192.24.2.1/128",
#         "::ffff:192.168.32.0/120"
#     ]
# }
#
# TASK [convert IPv4 addresses into IPv6 addresses.] **********************************************************
# ok: [localhost] => {
#     "msg": [
#         "192.24.2.1"
#     ]
# }

"""

RETURN = """
  data:
    type: raw
    description:
      - Returns values valid for a particular query.
"""


@pass_environment
def _ipv4(*args, **kwargs):
    """This filter is designed to return the input value if a query is True, and False if a query is False"""
    keys = ["value", "query"]
    data = dict(zip(keys, args[1:]))
    data.update(kwargs)
    try:
        if isinstance(data["value"], str):
            pass
        elif isinstance(data["value"], list):
            pass
        else:
            raise AnsibleError(
                "Unrecognized type <{0}> for ipv4 filter <{1}>".format(
                    type(data["value"]), "value"
                )
            )

    except (TypeError, ValueError):
        raise AnsibleError(
            "Unrecognized type <{0}> for ipv4 filter <{1}>".format(
                type(data["value"]), "value"
            )
        )
    aav = AnsibleArgSpecValidator(data=data, schema=DOCUMENTATION, name="ipv4")
    valid, errors, updated_data = aav.validate()
    if not valid:
        raise AnsibleFilterError(errors)
    return ipv4(**updated_data)


def ipv4(value, query=""):
    return ipaddr(value, query, version=4, alias="ipv4")


class FilterModule(object):
    """IP address and network manipulation filters
    """

    filter_map = {
        # IP addresses and networks
        "ipv4": _ipv4
    }

    def filters(self):
        """ ipaddr filter """
        if netaddr:
            return self.filter_map
        else:
            return dict(
                (f, partial(_need_netaddr, f)) for f in self.filter_map
            )