76 lines
2.8 KiB
Python
76 lines
2.8 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright (C) 2023 Team tiramisu (see AUTHORS for all contributors)
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# The original `Config` design model is unproudly borrowed from
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# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
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# the whole pypy projet is under MIT licence
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# ____________________________________________________________
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import re
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import sys
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from ..setting import undefined, Undefined, OptionBag
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from ..i18n import _
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from .option import Option
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from .intoption import IntOption
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class PermissionsOption(IntOption):
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"""Unix file permissions
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Valid the representing Unix permissions is an octal (base-8) notation.
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This notation consists of at least three digits (owner, group, and others).
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If a fourth digit is present to the setuid bit, the setgid bit and the sticky bit attributes.
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This option is an integer value.
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"""
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__slots__ = tuple()
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perm_re = re.compile(r"^[0-7]{3,4}$")
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_type = 'permissions'
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_display_name = _('unix file permissions')
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def __init__(self,
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*args,
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**kwargs,
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) -> None:
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#do not display intoption attributs
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super().__init__(*args,
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**kwargs)
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def validate(self,
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value: str) -> None:
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super().validate(value)
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if not self.perm_re.search(str(value)):
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raise ValueError(_('only 3 or 4 octal digits are allowed'))
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def second_level_validation(self,
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value: str,
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warnings_only: bool) -> None:
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old_digit = 7
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str_value = str(value)
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if len(str_value) == 4:
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str_value = str_value[1:]
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for idx, digit in enumerate(str_value):
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new_digit = int(digit)
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if old_digit < new_digit:
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if idx == 1:
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old = _('user')
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new = _('group')
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else:
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old = _('group')
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new = _('other')
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raise ValueError(_(f'{new} has more right than {old}'))
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old_digit = new_digit
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if str_value == '777':
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raise ValueError(_(f'too weak'))
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