79 lines
3.2 KiB
Python
79 lines
3.2 KiB
Python
# Copyright (c) 2013-2014 Will Thames <will@thames.id.au>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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from ansiblelater.rule import RuleBase
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class CheckFilePermissionOctal(RuleBase):
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rid = "ANS119"
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description = "Numeric file permissions without a leading zero can behave unexpectedly"
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helptext = '`mode: {mode}` should be strings with a leading zero `mode: "0{mode}"`'
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types = ["playbook", "task", "handler"]
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def check(self, candidate, settings):
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tasks, errors = self.get_normalized_tasks(candidate, settings)
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modules = [
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"assemble",
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"copy",
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"file",
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"ini_file",
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"lineinfile",
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"replace",
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"synchronize",
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"template",
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"unarchive",
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]
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if not errors:
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for task in tasks:
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if task["action"]["__ansible_module__"] in modules:
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mode = task["action"].get("mode", None)
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if isinstance(mode, int) and self._is_invalid_permission(mode):
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errors.append(
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self.Error(task["__line__"], self.helptext.format(mode=mode))
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)
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return self.Result(candidate.path, errors)
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@staticmethod
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def _is_invalid_permission(mode):
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other_write_without_read = (
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mode % 8 and mode % 8 < 4 and not (mode % 8 == 1 and (mode >> 6) % 2 == 1)
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)
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group_write_without_read = (
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(mode >> 3) % 8
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and (mode >> 3) % 8 < 4
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and not ((mode >> 3) % 8 == 1 and (mode >> 6) % 2 == 1)
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)
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user_write_without_read = (mode >> 6) % 8 and (mode >> 6) % 8 < 4 and (mode >> 6) % 8 != 1
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other_more_generous_than_group = mode % 8 > (mode >> 3) % 8
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other_more_generous_than_user = mode % 8 > (mode >> 6) % 8
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group_more_generous_than_user = (mode >> 3) % 8 > (mode >> 6) % 8
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return bool(
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other_write_without_read
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or group_write_without_read
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or user_write_without_read
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or other_more_generous_than_group
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or other_more_generous_than_user
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or group_more_generous_than_user
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)
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