New module: Xfconf-based management of the Xfce 4 DE (#28112)
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Joseph Benden
ansibot
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lib/ansible/modules/system/xfconf.py
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lib/ansible/modules/system/xfconf.py
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2017, Joseph Benden <joe@benden.us>
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#
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = """
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module: xfconf
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author:
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- "Joseph Benden (@jbenden)"
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short_description: Edit XFCE4 Configurations
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description:
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- This module allows for the manipulation of Xfce 4 Configuration via
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xfconf-query. Please see the xfconf-query(1) man pages for more details.
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version_added: "2.8"
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options:
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channel:
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description:
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- A Xfconf preference channel is a top-level tree key, inside of the
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Xfconf repository that corresponds to the location for which all
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application properties/keys are stored. See man xfconf-query(1)
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required: yes
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property:
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description:
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- A Xfce preference key is an element in the Xfconf repository
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that corresponds to an application preference. See man xfconf-query(1)
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required: yes
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value:
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description:
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- Preference properties typically have simple values such as strings,
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integers, or lists of strings and integers. This is ignored if the state
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is "get". See man xfconf-query(1)
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value_type:
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description:
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- The type of value being set. This is ignored if the state is "get".
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choices: [ int, bool, float, string ]
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state:
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description:
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- The action to take upon the property/value.
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choices: [ get, present, absent ]
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default: "present"
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"""
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EXAMPLES = """
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- name: Change the DPI to "192"
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xfconf:
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channel: "xsettings"
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property: "/Xft/DPI"
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value_type: "int"
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value: "192"
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become: True
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become_user: johnsmith
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"""
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RETURN = '''
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channel:
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description: The channel specified in the module parameters
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returned: success
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type: string
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sample: "xsettings"
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property:
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description: The property specified in the module parameters
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returned: success
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type: string
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sample: "/Xft/DPI"
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value_type:
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description: The type of the value that was changed
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returned: success
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type: string
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sample: "int"
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value:
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description: The value of the preference key after executing the module
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returned: success
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type: string
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sample: "192"
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...
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'''
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import pipes
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import sys
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from ansible.module_utils.basic import AnsibleModule
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class XfconfPreference(object):
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def __init__(self, module, channel, property, value_type, value):
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self.module = module
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self.channel = channel
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self.property = property
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self.value_type = value_type
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self.value = value
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def call(self, call_type, fail_onerr=True):
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""" Helper function to perform xfconf-query operations """
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changed = False
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out = ''
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# Execute the call
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cmd = "{0} --channel {1} --property {2}".format(self.module.get_bin_path('xfconf-query', True),
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pipes.quote(self.channel),
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pipes.quote(self.property))
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try:
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if call_type == 'set':
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cmd += " --type {0} --create --set {1}".format(pipes.quote(self.value_type),
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pipes.quote(self.value))
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elif call_type == 'unset':
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cmd += " --reset"
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# Start external command
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rc, out, err = self.module.run_command(cmd, check_rc=False)
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if rc != 0 or len(err) > 0:
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if fail_onerr:
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self.module.fail_json(msg='xfconf-query failed with error: %s' % (str(err)))
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else:
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changed = True
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except OSError as exception:
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self.module.fail_json(msg='xfconf-query failed with exception: %s' % exception)
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return changed, out.rstrip()
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def main():
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# Setup the Ansible module
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module = AnsibleModule(
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argument_spec=dict(
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channel=dict(required=True, type='str'),
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property=dict(required=True, type='str'),
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value_type=dict(required=False,
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choices=['int', 'bool', 'float', 'string'],
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type='str'),
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value=dict(required=False, default=None, type='str'),
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state=dict(default='present',
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choices=['present', 'get', 'absent'],
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type='str')
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),
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supports_check_mode=True
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)
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state_values = {"present": "set", "absent": "unset", "get": "get"}
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# Assign module values to dictionary values
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channel = module.params['channel']
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property = module.params['property']
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value_type = module.params['value_type']
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if module.params['value'].lower() == "true":
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value = "true"
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elif module.params['value'] == "false":
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value = "false"
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else:
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value = module.params['value']
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state = state_values[module.params['state']]
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# Initialize some variables for later
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change = False
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new_value = ''
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if state != "get":
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if value is None or value == "":
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module.fail_json(msg='State %s requires "value" to be set'
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% str(state))
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elif value_type is None or value_type == "":
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module.fail_json(msg='State %s requires "value_type" to be set'
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% str(state))
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# Create a Xfconf preference
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xfconf = XfconfPreference(module,
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channel,
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property,
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value_type,
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value)
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# Now we get the current value, if not found don't fail
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dummy, current_value = xfconf.call("get", fail_onerr=False)
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# Check if the current value equals the value we want to set. If not, make
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# a change
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if current_value != value:
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# If check mode, we know a change would have occurred.
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if module.check_mode:
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# So we will set the change to True
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change = True
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# And set the new_value to the value that would have been set
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new_value = value
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# If not check mode make the change.
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else:
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change, new_value = xfconf.call(state)
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# If the value we want to set is the same as the current_value, we will
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# set the new_value to the current_value for reporting
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else:
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new_value = current_value
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facts = dict(xfconf={'changed': change,
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'channel': channel,
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'property': property,
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'value_type': value_type,
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'new_value': new_value,
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'previous_value': current_value,
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'playbook_value': module.params['value']})
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module.exit_json(changed=change, ansible_facts=facts)
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if __name__ == '__main__':
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main()
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