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097aebadb0
* Fix M(). * Break long line. * Fix the remaining M(...). * Break long line.
334 lines
11 KiB
Python
334 lines
11 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright: (c) 2012, Jan-Piet Mens <jpmens () gmail.com>
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# Copyright: (c) 2015, Ales Nosek <anosek.nosek () gmail.com>
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# Copyright: (c) 2017, Ansible Project
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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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DOCUMENTATION = r'''
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---
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module: ini_file
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short_description: Tweak settings in INI files
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extends_documentation_fragment: files
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description:
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- Manage (add, remove, change) individual settings in an INI-style file without having
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to manage the file as a whole with, say, M(ansible.builtin.template) or M(ansible.builtin.assemble).
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- Adds missing sections if they don't exist.
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- Before Ansible 2.0, comments are discarded when the source file is read, and therefore will not show up in the destination file.
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- Since Ansible 2.3, this module adds missing ending newlines to files to keep in line with the POSIX standard, even when
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no other modifications need to be applied.
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options:
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path:
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description:
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- Path to the INI-style file; this file is created if required.
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- Before Ansible 2.3 this option was only usable as I(dest).
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type: path
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required: true
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aliases: [ dest ]
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section:
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description:
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- Section name in INI file. This is added if C(state=present) automatically when
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a single value is being set.
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- If left empty or set to C(null), the I(option) will be placed before the first I(section).
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- Using C(null) is also required if the config format does not support sections.
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type: str
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required: true
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option:
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description:
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- If set (required for changing a I(value)), this is the name of the option.
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- May be omitted if adding/removing a whole I(section).
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type: str
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value:
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description:
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- The string value to be associated with an I(option).
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- May be omitted when removing an I(option).
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type: str
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backup:
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description:
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- Create a backup file including the timestamp information so you can get
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the original file back if you somehow clobbered it incorrectly.
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type: bool
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default: no
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state:
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description:
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- If set to C(absent) the option or section will be removed if present instead of created.
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type: str
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choices: [ absent, present ]
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default: present
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no_extra_spaces:
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description:
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- Do not insert spaces before and after '=' symbol.
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type: bool
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default: no
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create:
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description:
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- If set to C(no), the module will fail if the file does not already exist.
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- By default it will create the file if it is missing.
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type: bool
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default: yes
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allow_no_value:
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description:
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- Allow option without value and without '=' symbol.
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type: bool
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default: no
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notes:
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- While it is possible to add an I(option) without specifying a I(value), this makes no sense.
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- As of Ansible 2.3, the I(dest) option has been changed to I(path) as default, but I(dest) still works as well.
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author:
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- Jan-Piet Mens (@jpmens)
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- Ales Nosek (@noseka1)
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'''
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EXAMPLES = r'''
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# Before Ansible 2.3, option 'dest' was used instead of 'path'
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- name: Ensure "fav=lemonade is in section "[drinks]" in specified file
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ini_file:
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path: /etc/conf
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section: drinks
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option: fav
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value: lemonade
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mode: '0600'
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backup: yes
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- name: Ensure "temperature=cold is in section "[drinks]" in specified file
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ini_file:
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path: /etc/anotherconf
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section: drinks
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option: temperature
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value: cold
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backup: yes
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'''
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import os
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import re
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import tempfile
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import traceback
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from ansible.module_utils.basic import AnsibleModule
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def match_opt(option, line):
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option = re.escape(option)
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return re.match('( |\t)*%s( |\t)*(=|$)' % option, line) \
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or re.match('#( |\t)*%s( |\t)*(=|$)' % option, line) \
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or re.match(';( |\t)*%s( |\t)*(=|$)' % option, line)
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def match_active_opt(option, line):
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option = re.escape(option)
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return re.match('( |\t)*%s( |\t)*(=|$)' % option, line)
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def do_ini(module, filename, section=None, option=None, value=None,
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state='present', backup=False, no_extra_spaces=False, create=True,
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allow_no_value=False):
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diff = dict(
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before='',
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after='',
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before_header='%s (content)' % filename,
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after_header='%s (content)' % filename,
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)
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if not os.path.exists(filename):
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if not create:
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module.fail_json(rc=257, msg='Destination %s does not exist !' % filename)
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destpath = os.path.dirname(filename)
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if not os.path.exists(destpath) and not module.check_mode:
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os.makedirs(destpath)
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ini_lines = []
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else:
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ini_file = open(filename, 'r')
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try:
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ini_lines = ini_file.readlines()
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finally:
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ini_file.close()
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if module._diff:
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diff['before'] = ''.join(ini_lines)
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changed = False
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# ini file could be empty
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if not ini_lines:
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ini_lines.append('\n')
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# last line of file may not contain a trailing newline
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if ini_lines[-1] == "" or ini_lines[-1][-1] != '\n':
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ini_lines[-1] += '\n'
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changed = True
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# append fake section lines to simplify the logic
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# At top:
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# Fake random section to do not match any other in the file
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# Using commit hash as fake section name
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fake_section_name = "ad01e11446efb704fcdbdb21f2c43757423d91c5"
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# Insert it at the beginning
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ini_lines.insert(0, '[%s]' % fake_section_name)
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# At botton:
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ini_lines.append('[')
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# If no section is defined, fake section is used
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if not section:
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section = fake_section_name
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within_section = not section
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section_start = 0
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msg = 'OK'
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if no_extra_spaces:
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assignment_format = '%s=%s\n'
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else:
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assignment_format = '%s = %s\n'
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for index, line in enumerate(ini_lines):
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if line.startswith('[%s]' % section):
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within_section = True
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section_start = index
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elif line.startswith('['):
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if within_section:
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if state == 'present':
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# insert missing option line at the end of the section
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for i in range(index, 0, -1):
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# search backwards for previous non-blank or non-comment line
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if not re.match(r'^[ \t]*([#;].*)?$', ini_lines[i - 1]):
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if not value and allow_no_value:
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ini_lines.insert(i, '%s\n' % option)
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else:
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ini_lines.insert(i, assignment_format % (option, value))
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msg = 'option added'
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changed = True
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break
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elif state == 'absent' and not option:
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# remove the entire section
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del ini_lines[section_start:index]
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msg = 'section removed'
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changed = True
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break
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else:
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if within_section and option:
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if state == 'present':
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# change the existing option line
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if match_opt(option, line):
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if not value and allow_no_value:
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newline = '%s\n' % option
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else:
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newline = assignment_format % (option, value)
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option_changed = ini_lines[index] != newline
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changed = changed or option_changed
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if option_changed:
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msg = 'option changed'
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ini_lines[index] = newline
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if option_changed:
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# remove all possible option occurrences from the rest of the section
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index = index + 1
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while index < len(ini_lines):
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line = ini_lines[index]
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if line.startswith('['):
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break
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if match_active_opt(option, line):
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del ini_lines[index]
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else:
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index = index + 1
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break
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elif state == 'absent':
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# delete the existing line
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if match_active_opt(option, line):
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del ini_lines[index]
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changed = True
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msg = 'option changed'
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break
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# remove the fake section line
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del ini_lines[0]
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del ini_lines[-1:]
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if not within_section and option and state == 'present':
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ini_lines.append('[%s]\n' % section)
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if not value and allow_no_value:
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ini_lines.append('%s\n' % option)
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else:
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ini_lines.append(assignment_format % (option, value))
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changed = True
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msg = 'section and option added'
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if module._diff:
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diff['after'] = ''.join(ini_lines)
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backup_file = None
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if changed and not module.check_mode:
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if backup:
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backup_file = module.backup_local(filename)
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try:
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tmpfd, tmpfile = tempfile.mkstemp(dir=module.tmpdir)
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f = os.fdopen(tmpfd, 'w')
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f.writelines(ini_lines)
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f.close()
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except IOError:
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module.fail_json(msg="Unable to create temporary file %s", traceback=traceback.format_exc())
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try:
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module.atomic_move(tmpfile, filename)
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except IOError:
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module.ansible.fail_json(msg='Unable to move temporary \
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file %s to %s, IOError' % (tmpfile, filename), traceback=traceback.format_exc())
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return (changed, backup_file, diff, msg)
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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path=dict(type='path', required=True, aliases=['dest']),
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section=dict(type='str', required=True),
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option=dict(type='str'),
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value=dict(type='str'),
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backup=dict(type='bool', default=False),
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state=dict(type='str', default='present', choices=['absent', 'present']),
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no_extra_spaces=dict(type='bool', default=False),
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allow_no_value=dict(type='bool', default=False),
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create=dict(type='bool', default=True)
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),
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add_file_common_args=True,
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supports_check_mode=True,
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)
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path = module.params['path']
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section = module.params['section']
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option = module.params['option']
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value = module.params['value']
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state = module.params['state']
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backup = module.params['backup']
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no_extra_spaces = module.params['no_extra_spaces']
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allow_no_value = module.params['allow_no_value']
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create = module.params['create']
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(changed, backup_file, diff, msg) = do_ini(module, path, section, option, value, state, backup, no_extra_spaces, create, allow_no_value)
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if not module.check_mode and os.path.exists(path):
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file_args = module.load_file_common_arguments(module.params)
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changed = module.set_fs_attributes_if_different(file_args, changed)
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results = dict(
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changed=changed,
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diff=diff,
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msg=msg,
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path=path,
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)
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if backup_file is not None:
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results['backup_file'] = backup_file
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# Mission complete
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module.exit_json(**results)
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if __name__ == '__main__':
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main()
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