237 lines
6.7 KiB
Python
Executable file
237 lines
6.7 KiB
Python
Executable file
#!/usr/bin/python
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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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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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#
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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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#
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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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try:
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import json
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except ImportError:
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import simplejson as json
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import os
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import sys
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import shlex
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import subprocess
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import shutil
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import stat
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import grp
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import pwd
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def debug(msg):
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# ansible ignores stderr, so it's safe to use for debug
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# print >>sys.stderr, msg
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pass
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def exit_json(rc=0, **kwargs):
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# FIXME: if path exists, include the user, group, mode and context
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# in the data if not already present, such that this module is
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# also useful for inventory purposes
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if 'path' in kwargs:
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debug("adding path info")
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add_path_info(kwargs)
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print json.dumps(kwargs)
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sys.exit(rc)
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def fail_json(**kwargs):
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kwargs['failed'] = True
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exit_json(rc=1, **kwargs)
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def add_path_info(kwargs):
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path = kwargs['path']
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if os.path.exists(path):
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(user, group) = user_and_group(path)
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kwargs['user'] = user
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kwargs['group'] = group
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st = os.stat(path)
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kwargs['mode'] = stat.S_IMODE(st[stat.ST_MODE])
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# secontext not yet supported
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if os.path.isfile(path):
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kwargs['state'] = 'file'
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else:
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kwargs['state'] = 'directory'
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else:
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kwargs['state'] = 'absent'
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return kwargs
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# ===========================================
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argfile = sys.argv[1]
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args = open(argfile, 'r').read()
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items = shlex.split(args)
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if not len(items):
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fail_json(msg='the module requires arguments -a')
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sys.exit(1)
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params = {}
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for x in items:
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(k, v) = x.split("=")
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params[k] = v
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state = params.get('state','file')
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path = params.get('path', params.get('dest', params.get('name', None)))
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link = params.get('link', 'false')
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mode = params.get('mode', None)
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owner = params.get('owner', None)
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group = params.get('group', None)
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recurse = params.get('recurse', 'false')
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secontext = params.get('secontext', None)
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if state not in [ 'file', 'directory', 'absent' ]:
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fail_json(msg='invalid state')
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if path is None:
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fail_json(msg='path is required')
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changed = False
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# ===========================================
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# support functions
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def md5sum(filename):
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return os.popen("/usr/bin/md5sum %s" % f).read()
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def user_and_group(filename):
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st = os.stat(filename)
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uid = st.st_uid
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gid = st.st_gid
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user = pwd.getpwuid(uid)[0]
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group = grp.getgrgid(gid)[0]
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debug("got user=%s and group=%s" % (user, group))
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return (user, group)
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def set_context_if_different(path, context, changed):
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if context is None:
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return changed
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if context is not None:
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fail_json(path=path, msg='context not yet supported')
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def set_owner_if_different(path, owner, changed):
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if owner is None:
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debug('not tweaking owner')
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return changed
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user, group = user_and_group(path)
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if owner != user:
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debug('setting owner')
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rc = os.system("/bin/chown -R %s %s" % (owner, path))
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if rc != 0:
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fail_json(path=path, msg='chown failed')
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return True
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return changed
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def set_group_if_different(path, group, changed):
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if group is None:
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debug('not tweaking group')
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return changed
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old_user, old_group = user_and_group(path)
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if old_group != group:
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debug('setting group')
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rc = os.system("/bin/chgrp -R %s %s" % (group, path))
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if rc != 0:
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fail_json(path=path, msg='chgrp failed')
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return True
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return changed
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def set_mode_if_different(path, mode, changed):
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if mode is None:
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debug('not tweaking mode')
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return changed
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try:
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# FIXME: support English modes
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mode = int("0%s" % mode)
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except Exception, e:
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fail_json(path=path, msg='mode needs to be something octalish', details=str(e))
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st = os.stat(path)
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actual_mode = stat.S_IMODE(st[stat.ST_MODE])
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if actual_mode != mode:
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try:
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debug('setting mode')
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os.chmod(path, mode)
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except Exception, e:
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fail_json(path=path, msg='chmod failed', details=str(e))
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if os.path.exists(path):
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return True
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return changed
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def rmtree_error(func, path, exc_info):
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fail_json(path=path, msg='failed to remove directory')
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# ===========================================
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# go...
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prev_state = 'absent'
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if os.path.exists(path):
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if os.path.isfile(path):
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prev_state = 'file'
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else:
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prev_state = 'directory'
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if prev_state != 'absent' and state == 'absent':
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debug('requesting absent')
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try:
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if prev_state == 'directory':
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if os.path.islink(path):
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os.unlink(path)
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else:
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shutil.rmtree(path, ignore_errors=False, onerror=rmtree_error)
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else:
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os.unlink(path)
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except Exception, e:
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fail_json(path=path, msg=str(e))
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exit_json(path=path, changed=True)
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sys.exit(0)
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if prev_state != 'absent' and prev_state != state:
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fail_json(path=path, msg='refusing to convert between file and directory')
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if prev_state == 'absent' and state == 'absent':
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exit_json(path=path, changed=False)
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if state == 'file':
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debug('requesting file')
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if prev_state == 'absent':
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fail_json(path=path, msg='file does not exist, use copy or template module to create')
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# set modes owners and context as needed
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changed = set_context_if_different(path, secontext, changed)
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changed = set_owner_if_different(path, owner, changed)
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changed = set_group_if_different(path, group, changed)
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changed = set_mode_if_different(path, mode, changed)
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exit_json(path=path, changed=changed)
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elif state == 'directory':
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debug('requesting directory')
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if prev_state == 'absent':
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os.makedirs(path)
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changed = True
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# set modes owners and context as needed
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changed = set_context_if_different(path, secontext, changed)
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changed = set_owner_if_different(path, owner, changed)
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changed = set_group_if_different(path, owner, changed)
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changed = set_mode_if_different(path, owner, changed)
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exit_json(path=path, changed=changed)
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fail_json(path=path, msg='unexpected position reached')
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sys.exit(0)
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