Add library module for dpkg-reconfigure
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library/dpkg_reconfigure
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174
library/dpkg_reconfigure
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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"""
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Ansible module for reconfiguring debian packages.
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(c) 2013, Sebastien Bocahu <sebastien.bocahu@nuxit.com>
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This file is part of Ansible
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Ansible is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Ansible is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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"""
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DOCUMENTATION = '''
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---
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module: dpkg_reconfigure
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short_description: Reconfigure a Debian package.
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description:
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- Reconfigure a Debian package using dpkg-reconfigure.
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version_added: "1.2"
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notes:
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- A number of questions has to be answered (depending on the package).
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Use 'DEBIAN_FRONTED=editor dpkg-reconfigure $pkg' for finding them.
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options:
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pkg:
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description:
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- Package to configure.
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required: true
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default: null
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aliases: []
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answers:
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description:
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- Debconf configuration answer(s)/question(s).
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required: true
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default: null
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aliases: []
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author: Sebastien Bocahu
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'''
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EXAMPLES = '''
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# Set default locale to fr_FR.UTF-8, and generate en_US.UTF-8 as well:
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dpkg_reconfigure:
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pkg: locales
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answers:
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locales/default_environment_locale: fr_FR.UTF-8
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locales/locales_to_be_generated: en_US.UTF-8 UTF-8, fr_FR.UTF-8 UTF-8
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# Reconfigure roundcube, using configuration answers stored in a file:
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dpkg_reconfigure: pkg=roundcube answers='$FILE(/path/dpkg-reconfigure/roundcube)'"
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'''
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import sys
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import os
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import pwd
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import os.path
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import re
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import tempfile
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def get_selections(module, pkg):
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cmd = [module.get_bin_path('debconf-show', True)]
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cmd.append(' %s' % pkg)
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rc, out, err = module.run_command(' '.join(cmd))
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if rc == 0:
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selections = {}
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for answer in out.split('\n'):
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item = re.search('^[* ] ([^:]+): (.*)$', answer)
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if item:
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value = item.group(2).strip()
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if value == 'true':
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value = 'yes'
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elif value == 'false':
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value = 'no'
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selections[ item.group(1).strip() ] = value
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return selections
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else:
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module.fail_json(msg=err)
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def dpkg_reconfigure(module, pkg, wanted_config):
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editor_script = [ '#!/bin/sh', 'sed -i "$1" -f - <<EOF' ]
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for question in wanted_config:
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e_question = re.sub(r'([\\/&])', r'\\\1', question)
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e_answer = re.sub(r'([\\/&])', r'\\\1', wanted_config[question])
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editor_script.append('s/^\\(%s\\)\\s*=.*/\\1="%s"/' % (e_question, e_answer))
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editor_script.append('EOF')
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outfd, outsock_path = tempfile.mkstemp()
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tmp = os.fdopen(outfd,'w')
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tmp.write('\n'.join(editor_script))
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tmp.close()
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os.chmod(outsock_path, stat.S_IEXEC)
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cmd = [ 'EDITOR=%s DEBIAN_FRONTEND=editor' % outsock_path ]
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cmd.append(module.get_bin_path('dpkg-reconfigure', True))
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cmd.append(pkg)
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rc, out, err = module.run_command(' '.join(cmd), use_unsafe_shell=True)
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os.unlink(outsock_path)
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if rc == 0:
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return True, err
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else:
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return False, err
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def enforce_state(module, params):
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pkg = params["pkg"]
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answers = params["answers"]
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wanted_config = {}
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if type(answers) is dict:
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wanted_config = answers
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else:
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for answer in answers.split('\n'):
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item = re.findall(r"[^\s]+", answer)
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if len(item) > 1:
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wanted_config[ item[0].strip() ] = ' '.join(item[1:])
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elif len(item) == 1:
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wanted_config[ item[0].strip() ] = ''
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for key in wanted_config:
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value = wanted_config[key]
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if isinstance(value, bool):
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if value:
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wanted_config[key] = 'yes'
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else:
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wanted_config[key] = 'no'
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current_config = get_selections(module, params["pkg"])
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already_configured = 1
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for answer in wanted_config:
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if not answer in current_config or current_config[answer] != wanted_config[answer]:
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already_configured = 0
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if already_configured:
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module.exit_json(changed=False, msg="Already configured")
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else:
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rc, msg = dpkg_reconfigure(module, pkg, wanted_config)
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if not rc:
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module.fail_json(msg=msg)
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params['changed'] = True
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params['msg'] = msg
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return params
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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pkg = dict(required=True),
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answers = dict(required=True),
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)
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)
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results = enforce_state(module, module.params)
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module.exit_json(**results)
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# this is magic, see lib/ansible/module_common.py
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#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
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main()
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