#!/usr/bin/python # -*- coding: utf-8 -*- # (c) 2012, Michael DeHaan # # This file is part of Ansible # # Ansible is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Ansible is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Ansible. If not, see . import shutil import stat import grp import pwd try: import selinux HAVE_SELINUX=True except ImportError: HAVE_SELINUX=False DOCUMENTATION = ''' --- module: file short_description: Sets attributes of files description: - Sets attributes of files, symlinks, and directories, or removes files/symlinks/directories. Many other modules support the same options as the M(file) module - including M(copy), M(template), and M(assemble). options: path: description: - 'defines the file being managed, unless when used with C(state=link), and then sets the destination to create a symbolic link to using I(src). Aliases: I(dest), I(name)' required: true default: [] aliases: ['dest', 'name'] state: description: - If C(directory), all immediate subdirectories will be created if they do not exist. If C(file), the file will NOT be created if it does not exist, see the M(copy) or M(template) module if you want that behavior. If C(link), the symbolic link will be created or changed. Use C(hard) for hardlinks. If C(absent), directories will be recursively deleted, and files or symlinks will be unlinked. If C(touch) (new in 1.4), an empty file will be created if the c(dest) does not exist, while an existing file or directory will receive updated file access and modification times (similar to the way `touch` works from the command line). required: false default: file choices: [ file, link, directory, hard, touch, absent ] mode: required: false default: null choices: [] description: - mode the file or directory should be, such as 0644 as would be fed to I(chmod) owner: required: false default: null choices: [] description: - name of the user that should own the file/directory, as would be fed to I(chown) group: required: false default: null choices: [] description: - name of the group that should own the file/directory, as would be fed to I(chown) src: required: false default: null choices: [] description: - path of the file to link to (applies only to C(state=link)). seuser: required: false default: null choices: [] description: - user part of SELinux file context. Will default to system policy, if applicable. If set to C(_default), it will use the C(user) portion of the policy if available serole: required: false default: null choices: [] description: - role part of SELinux file context, C(_default) feature works as for I(seuser). setype: required: false default: null choices: [] description: - type part of SELinux file context, C(_default) feature works as for I(seuser). selevel: required: false default: "s0" choices: [] description: - level part of the SELinux file context. This is the MLS/MCS attribute, sometimes known as the C(range). C(_default) feature works as for I(seuser). recurse: required: false default: "no" choices: [ "yes", "no" ] version_added: "1.1" description: - recursively set the specified file attributes (applies only to state=directory) force: required: false default: "no" choices: [ "yes", "no" ] description: - 'force the creation of the symlinks in two cases: the source file does not exist (but will appear later); the destination exists and a file (so, we need to unlink the "path" file and create symlink to the "src" file in place of it).' notes: - See also M(copy), M(template), M(assemble) requirements: [ ] author: Michael DeHaan ''' EXAMPLES = ''' - file: path=/etc/foo.conf owner=foo group=foo mode=0644 - file: src=/file/to/link/to dest=/path/to/symlink owner=foo group=foo state=link ''' def main(): # FIXME: pass this around, should not use global global module module = AnsibleModule( argument_spec = dict( state = dict(choices=['file','directory','link','hard','touch','absent'], default='file'), path = dict(aliases=['dest', 'name'], required=True), original_basename = dict(required=False), # Internal use only, for recursive ops recurse = dict(default='no', type='bool'), force = dict(required=False,default=False,type='bool'), diff_peek = dict(default=None), validate = dict(required=False, default=None), ), add_file_common_args=True, supports_check_mode=True ) params = module.params state = params['state'] force = params['force'] params['path'] = path = os.path.expanduser(params['path']) # short-circuit for diff_peek if params.get('diff_peek', None) is not None: appears_binary = False try: f = open(path) b = f.read(8192) f.close() if b.find("\x00") != -1: appears_binary = True except: pass module.exit_json(path=path, changed=False, appears_binary=appears_binary) # source is both the source of a symlink or an informational passing of the src for a template module # or copy module, even if this module never uses it, it is needed to key off some things src = params.get('src', None) if src: src = os.path.expanduser(src) if src is not None and os.path.isdir(path) and state != "link": if params['original_basename']: basename = params['original_basename'] else: basename = os.path.basename(src) params['path'] = path = os.path.join(path, basename) file_args = module.load_file_common_arguments(params) if state in ['link','hard'] and (src is None or path is None): module.fail_json(msg='src and dest are required for creating links') elif path is None: module.fail_json(msg='path is required') changed = False prev_state = 'absent' if os.path.lexists(path): if os.path.islink(path): prev_state = 'link' elif os.path.isdir(path): prev_state = 'directory' elif os.stat(path).st_nlink > 1: prev_state = 'hard' else: # could be many other things, but defaulting to file prev_state = 'file' recurse = params['recurse'] if recurse and state == 'file' and prev_state == 'directory': state = 'directory' if prev_state != 'absent' and state == 'absent': try: if prev_state == 'directory': if os.path.islink(path): if module.check_mode: module.exit_json(changed=True) os.unlink(path) else: try: if module.check_mode: module.exit_json(changed=True) shutil.rmtree(path, ignore_errors=False) except: module.exit_json(msg="rmtree failed") else: if module.check_mode: module.exit_json(changed=True) os.unlink(path) except Exception, e: module.fail_json(path=path, msg=str(e)) module.exit_json(path=path, changed=True) if prev_state != 'absent' and prev_state != state: if not (force and (prev_state == 'file' or prev_state == 'directory') and state == 'link') and state != 'touch': module.fail_json(path=path, msg='refusing to convert between %s and %s for %s' % (prev_state, state, src)) if prev_state == 'absent' and state == 'absent': module.exit_json(path=path, changed=False) if state == 'file': if prev_state != 'file': module.fail_json(path=path, msg='file (%s) does not exist, use copy or template module to create' % path) changed = module.set_file_attributes_if_different(file_args, changed) module.exit_json(path=path, changed=changed) elif state == 'directory': if prev_state == 'absent': if module.check_mode: module.exit_json(changed=True) os.makedirs(path) changed = True changed = module.set_directory_attributes_if_different(file_args, changed) if recurse: for root,dirs,files in os.walk( file_args['path'] ): for dir in dirs: dirname=os.path.join(root,dir) tmp_file_args = file_args.copy() tmp_file_args['path']=dirname changed = module.set_directory_attributes_if_different(tmp_file_args, changed) for file in files: filename=os.path.join(root,file) tmp_file_args = file_args.copy() tmp_file_args['path']=filename changed = module.set_file_attributes_if_different(tmp_file_args, changed) module.exit_json(path=path, changed=changed) elif state in ['link','hard']: if os.path.isabs(src): abs_src = src else: module.fail_json(msg="absolute paths are required") if not os.path.exists(abs_src) and not force: module.fail_json(path=path, src=src, msg='src file does not exist') if prev_state == 'absent': changed = True elif prev_state == 'link': old_src = os.readlink(path) if not os.path.isabs(old_src): old_src = os.path.join(os.path.dirname(path), old_src) if old_src != src: changed = True elif prev_state == 'hard': if not (state == 'hard' and os.stat(path).st_ino == os.stat(src).st_ino): if not force: module.fail_json(dest=path, src=src, msg='Cannot link, different hard link exists at destination') changed = True elif prev_state == 'file': if not force: module.fail_json(dest=path, src=src, msg='Cannot link, file exists at destination') changed = True else: module.fail_json(dest=path, src=src, msg='unexpected position reached') if changed and not module.check_mode: if prev_state != 'absent': try: os.unlink(path) except OSError, e: module.fail_json(path=path, msg='Error while removing existing target: %s' % str(e)) try: if state == 'hard': os.link(src,path) else: os.symlink(src, path) except OSError, e: module.fail_json(path=path, msg='Error while linking: %s' % str(e)) changed = module.set_file_attributes_if_different(file_args, changed) module.exit_json(dest=path, src=src, changed=changed) elif state == 'touch': if module.check_mode: module.exit_json(path=path, skipped=True) if prev_state not in ['file', 'directory', 'absent']: module.fail_json(msg='Cannot touch other than files and directories') if prev_state != 'absent': try: os.utime(path, None) except OSError, e: module.fail_json(path=path, msg='Error while touching existing target: %s' % str(e)) else: try: open(path, 'w').close() except OSError, e: module.fail_json(path=path, msg='Error, could not touch target: %s' % str(e)) module.set_file_attributes_if_different(file_args, True) module.exit_json(dest=path, changed=True) else: module.fail_json(path=path, msg='unexpected position reached') # this is magic, see lib/ansible/module_common.py #<> main()