ansible/files/stat.py

462 lines
16 KiB
Python

#!/usr/bin/python
# 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 <http://www.gnu.org/licenses/>.
DOCUMENTATION = '''
---
module: stat
version_added: "1.3"
short_description: retrieve file or file system status
description:
- Retrieves facts for a file similar to the linux/unix 'stat' command.
options:
path:
description:
- The full path of the file/object to get the facts of
required: true
default: null
follow:
description:
- Whether to follow symlinks
required: false
default: no
get_md5:
description:
- Whether to return the md5 sum of the file. Will return None if we're
unable to use md5 (Common for FIPS-140 compliant systems)
required: false
default: yes
get_checksum:
description:
- Whether to return a checksum of the file (default sha1)
required: false
default: yes
version_added: "1.8"
checksum_algorithm:
description:
- Algorithm to determine checksum of file. Will throw an error if the
host is unable to use specified algorithm.
required: false
choices: [ 'sha1', 'sha224', 'sha256', 'sha384', 'sha512' ]
default: sha1
aliases: [ 'checksum_algo', 'checksum' ]
version_added: "2.0"
mime:
description:
- Use file magic and return data about the nature of the file. this uses
the 'file' utility found on most Linux/Unix systems.
- This will add both `mime_type` and 'charset' fields to the return, if possible.
required: false
choices: [ Yes, No ]
default: No
version_added: "2.1"
aliases: [ 'mime_type', 'mime-type' ]
author: "Bruce Pennypacker (@bpennypacker)"
'''
EXAMPLES = '''
# Obtain the stats of /etc/foo.conf, and check that the file still belongs
# to 'root'. Fail otherwise.
- stat: path=/etc/foo.conf
register: st
- fail: msg="Whoops! file ownership has changed"
when: st.stat.pw_name != 'root'
# Determine if a path exists and is a symlink. Note that if the path does
# not exist, and we test sym.stat.islnk, it will fail with an error. So
# therefore, we must test whether it is defined.
# Run this to understand the structure, the skipped ones do not pass the
# check performed by 'when'
- stat: path=/path/to/something
register: sym
- debug: msg="islnk isn't defined (path doesn't exist)"
when: sym.stat.islnk is not defined
- debug: msg="islnk is defined (path must exist)"
when: sym.stat.islnk is defined
- debug: msg="Path exists and is a symlink"
when: sym.stat.islnk is defined and sym.stat.islnk
- debug: msg="Path exists and isn't a symlink"
when: sym.stat.islnk is defined and sym.stat.islnk == False
# Determine if a path exists and is a directory. Note that we need to test
# both that p.stat.isdir actually exists, and also that it's set to true.
- stat: path=/path/to/something
register: p
- debug: msg="Path exists and is a directory"
when: p.stat.isdir is defined and p.stat.isdir
# Don't do md5 checksum
- stat: path=/path/to/myhugefile get_md5=no
# Use sha256 to calculate checksum
- stat: path=/path/to/something checksum_algorithm=sha256
'''
RETURN = '''
stat:
description: dictionary containing all the stat data
returned: success
type: dictionary
contains:
exists:
description: if the destination path actually exists or not
returned: success
type: boolean
sample: True
path:
description: The full path of the file/object to get the facts of
returned: success and if path exists
type: string
sample: '/path/to/file'
mode:
description: Unix permissions of the file in octal
returned: success, path exists and user can read stats
type: octal
sample: 1755
isdir:
description: Tells you if the path is a directory
returned: success, path exists and user can read stats
type: boolean
sample: False
ischr:
description: Tells you if the path is a character device
returned: success, path exists and user can read stats
type: boolean
sample: False
isblk:
description: Tells you if the path is a block device
returned: success, path exists and user can read stats
type: boolean
sample: False
isreg:
description: Tells you if the path is a regular file
returned: success, path exists and user can read stats
type: boolean
sample: True
isfifo:
description: Tells you if the path is a named pipe
returned: success, path exists and user can read stats
type: boolean
sample: False
islnk:
description: Tells you if the path is a symbolic link
returned: success, path exists and user can read stats
type: boolean
sample: False
issock:
description: Tells you if the path is a unix domain socket
returned: success, path exists and user can read stats
type: boolean
sample: False
uid:
description: Numeric id representing the file owner
returned: success, path exists and user can read stats
type: int
sample: 1003
gid:
description: Numeric id representing the group of the owner
returned: success, path exists and user can read stats
type: int
sample: 1003
size:
description: Size in bytes for a plain file, ammount of data for some special files
returned: success, path exists and user can read stats
type: int
sample: 203
inode:
description: Inode number of the path
returned: success, path exists and user can read stats
type: int
sample: 12758
dev:
description: Device the inode resides on
returned: success, path exists and user can read stats
type: int
sample: 33
nlink:
description: Number of links to the inode (hard links)
returned: success, path exists and user can read stats
type: int
sample: 1
atime:
description: Time of last access
returned: success, path exists and user can read stats
type: float
sample: 1424348972.575
mtime:
description: Time of last modification
returned: success, path exists and user can read stats
type: float
sample: 1424348972.575
ctime:
description: Time of last metadata update or creation (depends on OS)
returned: success, path exists and user can read stats
type: float
sample: 1424348972.575
wusr:
description: Tells you if the owner has write permission
returned: success, path exists and user can read stats
type: boolean
sample: True
rusr:
description: Tells you if the owner has read permission
returned: success, path exists and user can read stats
type: boolean
sample: True
xusr:
description: Tells you if the owner has execute permission
returned: success, path exists and user can read stats
type: boolean
sample: True
wgrp:
description: Tells you if the owner's group has write permission
returned: success, path exists and user can read stats
type: boolean
sample: False
rgrp:
description: Tells you if the owner's group has read permission
returned: success, path exists and user can read stats
type: boolean
sample: True
xgrp:
description: Tells you if the owner's group has execute permission
returned: success, path exists and user can read stats
type: boolean
sample: True
woth:
description: Tells you if others have write permission
returned: success, path exists and user can read stats
type: boolean
sample: False
roth:
description: Tells you if others have read permission
returned: success, path exists and user can read stats
type: boolean
sample: True
xoth:
description: Tells you if others have execute permission
returned: success, path exists and user can read stats
type: boolean
sample: True
isuid:
description: Tells you if the invoking user's id matches the owner's id
returned: success, path exists and user can read stats
type: boolean
sample: False
isgid:
description: Tells you if the invoking user's group id matches the owner's group id
returned: success, path exists and user can read stats
type: boolean
sample: False
lnk_source:
description: Original path
returned: success, path exists and user can read stats and the path is a symbolic link
type: string
sample: /home/foobar/21102015-1445431274-908472971
md5:
description: md5 hash of the path
returned: success, path exists and user can read stats and path
supports hashing and md5 is supported
type: string
sample: f88fa92d8cf2eeecf4c0a50ccc96d0c0
checksum:
description: hash of the path
returned: success, path exists, user can read stats, path supports
hashing and supplied checksum algorithm is available
type: string
sample: 50ba294cdf28c0d5bcde25708df53346825a429f
pw_name:
description: User name of owner
returned: success, path exists and user can read stats and installed python supports it
type: string
sample: httpd
gr_name:
description: Group name of owner
returned: success, path exists and user can read stats and installed python supports it
type: string
sample: www-data
mime_type:
description: file magic data or mime-type
returned: success, path exists and user can read stats and
installed python supports it and the `mime` option was true, will
return 'unknown' on error.
type: string
sample: PDF document, version 1.2
charset:
description: file character set or encoding
returned: success, path exists and user can read stats and
installed python supports it and the `mime` option was true, will
return 'unknown' on error.
type: string
sample: us-ascii
readable:
description: Tells you if the invoking user has the right to read the path
returned: success, path exists and user can read the path
type: boolean
sample: False
writeable:
description: Tells you if the invoking user has the right to write the path
returned: success, path exists and user can write the path
type: boolean
sample: False
executable:
description: Tells you if the invoking user has the execute the path
returned: success, path exists and user can execute the path
type: boolean
sample: False
'''
import errno
import grp
import os
import pwd
import stat
# import module snippets
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.pycompat24 import get_exception
def format_output(module, path, st, follow, get_md5, get_checksum,
checksum_algorithm, mimetype=None, charset=None):
mode = st.st_mode
# back to ansible
output = dict(
exists=True,
path=path,
mode="%04o" % stat.S_IMODE(mode),
isdir=stat.S_ISDIR(mode),
ischr=stat.S_ISCHR(mode),
isblk=stat.S_ISBLK(mode),
isreg=stat.S_ISREG(mode),
isfifo=stat.S_ISFIFO(mode),
islnk=stat.S_ISLNK(mode),
issock=stat.S_ISSOCK(mode),
uid=st.st_uid,
gid=st.st_gid,
size=st.st_size,
inode=st.st_ino,
dev=st.st_dev,
nlink=st.st_nlink,
atime=st.st_atime,
mtime=st.st_mtime,
ctime=st.st_ctime,
wusr=bool(mode & stat.S_IWUSR),
rusr=bool(mode & stat.S_IRUSR),
xusr=bool(mode & stat.S_IXUSR),
wgrp=bool(mode & stat.S_IWGRP),
rgrp=bool(mode & stat.S_IRGRP),
xgrp=bool(mode & stat.S_IXGRP),
woth=bool(mode & stat.S_IWOTH),
roth=bool(mode & stat.S_IROTH),
xoth=bool(mode & stat.S_IXOTH),
isuid=bool(mode & stat.S_ISUID),
isgid=bool(mode & stat.S_ISGID),
readable=os.access(path, os.R_OK),
writeable=os.access(path, os.W_OK),
excutable=os.access(path, os.X_OK),
)
if stat.S_ISLNK(mode):
output['lnk_source'] = os.path.realpath(path)
if stat.S_ISREG(mode) and get_md5 and os.access(path, os.R_OK):
# Will fail on FIPS-140 compliant systems
try:
output['md5'] = module.md5(path)
except ValueError:
output['md5'] = None
if stat.S_ISREG(mode) and get_checksum and os.access(path, os.R_OK):
output['checksum'] = module.digest_from_file(path, checksum_algorithm)
try:
pw = pwd.getpwuid(st.st_uid)
output['pw_name'] = pw.pw_name
grp_info = grp.getgrgid(st.st_gid)
output['gr_name'] = grp_info.gr_name
except:
pass
if not (mimetype is None and charset is None):
output['mime_type'] = mimetype
output['charset'] = charset
return output
def main():
module = AnsibleModule(
argument_spec=dict(
path=dict(required=True, type='path'),
follow=dict(default='no', type='bool'),
get_md5=dict(default='yes', type='bool'),
get_checksum=dict(default='yes', type='bool'),
checksum_algorithm=dict(default='sha1', type='str',
choices=['sha1', 'sha224', 'sha256', 'sha384', 'sha512'],
aliases=['checksum_algo', 'checksum']),
mime=dict(default=False, type='bool', aliases=['mime_type', 'mime-type']),
),
supports_check_mode=True
)
path = module.params.get('path')
follow = module.params.get('follow')
get_mime = module.params.get('mime')
get_md5 = module.params.get('get_md5')
get_checksum = module.params.get('get_checksum')
checksum_algorithm = module.params.get('checksum_algorithm')
try:
if follow:
st = os.stat(path)
else:
st = os.lstat(path)
except OSError:
e = get_exception()
if e.errno == errno.ENOENT:
output = {'exists': False}
module.exit_json(changed=False, stat=output)
module.fail_json(msg=e.strerror)
mimetype = None
charset = None
if get_mime:
mimetype = 'unknown'
charset = 'unknown'
filecmd = [module.get_bin_path('file', True), '-i', path]
try:
rc, out, err = module.run_command(filecmd)
if rc == 0:
mimetype, charset = out.split(':')[1].split(';')
mimetype = mimetype.strip()
charset = charset.split('=')[1].strip()
except:
pass
output = format_output(module, path, st, follow, get_md5, get_checksum,
checksum_algorithm, mimetype=mimetype,
charset=charset)
module.exit_json(changed=False, stat=output)
if __name__ == '__main__':
main()