mirror of
https://github.com/mofeng-git/One-KVM.git
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102 lines
3.5 KiB
Python
102 lines
3.5 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main PiKVM daemon. #
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# #
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# Copyright (C) 2018-2022 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program 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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# This program 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 this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import re
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from typing import Mapping
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from typing import Sequence
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from typing import Callable
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from typing import TypeVar
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from typing import NoReturn
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from typing import Any
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# =====
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class ValidatorError(ValueError):
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pass
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# =====
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_RetvalSeqT = TypeVar("_RetvalSeqT", bound=Sequence)
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# =====
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def raise_error(arg: Any, name: str, hide: bool=False) -> NoReturn:
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arg_str = " "
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if not hide:
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arg_str = (f" {arg!r} " if isinstance(arg, (str, bytes)) else f" '{arg}' ")
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raise ValidatorError(f"The argument{arg_str}is not a valid {name}")
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def check_not_none(arg: Any, name: str) -> Any:
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if arg is None:
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raise ValidatorError(f"None argument is not a valid {name}")
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return arg
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def check_not_none_string(arg: Any, name: str, strip: bool=True) -> str:
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arg = str(check_not_none(arg, name))
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if strip:
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arg = arg.strip()
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return arg
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def check_in_list(arg: Any, name: str, variants: (Sequence | Mapping | set)) -> Any:
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if arg not in variants:
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raise_error(arg, name)
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return arg
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def check_string_in_list(
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arg: Any,
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name: str,
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variants: (Sequence[str] | Mapping[str, Any] | set[str]),
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lower: bool=True,
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) -> str:
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arg = check_not_none_string(arg, name)
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if lower:
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arg = arg.lower()
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return check_in_list(arg, name, variants)
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def check_re_match(arg: Any, name: str, pattern: str, strip: bool=True, hide: bool=False) -> str:
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arg = check_not_none_string(arg, name, strip=strip)
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if re.match(pattern, arg, flags=re.MULTILINE) is None:
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raise_error(arg, name, hide=hide)
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return arg
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def check_len(arg: _RetvalSeqT, name: str, limit: int) -> _RetvalSeqT:
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if len(arg) > limit:
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raise_error(arg, name)
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return arg
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def check_any(arg: Any, name: str, validators: list[Callable[[Any], Any]]) -> Any: # pylint: disable=inconsistent-return-statements
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for validator in validators:
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try:
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return validator(arg)
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except Exception:
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pass
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raise_error(arg, name)
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