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feat: add rule CheckFilePermissionOctal

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Robert Kaussow 2021-01-31 12:36:51 +01:00
parent 6f2a06357f
commit 647539e726
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2 changed files with 69 additions and 1 deletions
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67
ansiblelater/rules/CheckFilePermissionOctal.py Normal file
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@ -0,0 +1,67 @@
# Copyright (c) 2013-2014 Will Thames <will@thames.id.au>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
from ansiblelater.standard import StandardBase
class CheckFilePermissionOctal(StandardBase):
sid = "ANSIBLE0019"
description = "Octal file permissions must contain leading zero or be a string"
helptext = "numeric file permissions without leading zero can behave in unexpected ways"
version = "0.2"
types = ["playbook", "task", "handler"]
def check(self, candidate, settings):
tasks, errors = self.get_normalized_tasks(candidate, settings)
modules = [
"assemble", "copy", "file", "ini_file", "lineinfile", "replace", "synchronize",
"template", "unarchive"
]
if not errors:
for task in tasks:
if task["action"]["__ansible_module__"] in modules:
mode = task["action"].get("mode", None)
if isinstance(mode, int):
if self._is_invalid_permission(mode):
errors.append(self.Error(task["__line__"], self.helptext))
return self.Result(candidate.path, errors)
@staticmethod
def _is_invalid_permission(mode):
other_write_without_read = (
mode % 8 and mode % 8 < 4 and not (mode % 8 == 1 and (mode >> 6) % 2 == 1)
)
group_write_without_read = ((mode >> 3) % 8 and (mode >> 3) % 8 < 4
and not ((mode >> 3) % 8 == 1 and (mode >> 6) % 2 == 1))
user_write_without_read = ((mode >> 6) % 8 and (mode >> 6) % 8 < 4
and not (mode >> 6) % 8 == 1)
other_more_generous_than_group = mode % 8 > (mode >> 3) % 8
other_more_generous_than_user = mode % 8 > (mode >> 6) % 8
group_more_generous_than_user = (mode >> 3) % 8 > (mode >> 6) % 8
return bool(
other_write_without_read or group_write_without_read or user_write_without_read
or other_more_generous_than_group or other_more_generous_than_user
or group_more_generous_than_user
)

3
docs/content/included_rules/_index.md
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@ -32,4 +32,5 @@ Reviews are nothing without some rules or standards against which to review. ans
| CheckBecomeUser | ANSIBLE0015 | `become` should be always used combined with `become_user`. | |
| CheckFilterSeparation | ANSIBLE0016 | Jinja2 filters should be separated with spaces. | |
| CheckCommandInsteadOfArgument | ANSIBLE0017 | Commands should not be used in place of module arguments. | |
| CheckMissingFilePermission | ANSIBLE0018 | File permissions unset or incorrect. | |
| CheckFilePermissionMissing | ANSIBLE0018 | File permissions unset or incorrect. | |
| CheckFilePermissionOctal | ANSIBLE0019 | Octal file permissions must contain leading zero or be a string. | |