JFIF$        dd7 

Viewing File: /opt/imunify360/venv/lib/python3.11/site-packages/cryptography/utils.py

# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.

from __future__ import annotations

import enum
import sys
import types
import typing
import warnings


# We use a UserWarning subclass, instead of DeprecationWarning, because CPython
# decided deprecation warnings should be invisible by default.
class CryptographyDeprecationWarning(UserWarning):
    pass


# Several APIs were deprecated with no specific end-of-life date because of the
# ubiquity of their use. They should not be removed until we agree on when that
# cycle ends.
DeprecatedIn36 = CryptographyDeprecationWarning
DeprecatedIn37 = CryptographyDeprecationWarning
DeprecatedIn40 = CryptographyDeprecationWarning
DeprecatedIn41 = CryptographyDeprecationWarning
DeprecatedIn42 = CryptographyDeprecationWarning
DeprecatedIn43 = CryptographyDeprecationWarning


def _check_bytes(name: str, value: bytes) -> None:
    if not isinstance(value, bytes):
        raise TypeError(f"{name} must be bytes")


def _check_byteslike(name: str, value: bytes) -> None:
    try:
        memoryview(value)
    except TypeError:
        raise TypeError(f"{name} must be bytes-like")


def int_to_bytes(integer: int, length: int | None = None) -> bytes:
    if length == 0:
        raise ValueError("length argument can't be 0")
    return integer.to_bytes(
        length or (integer.bit_length() + 7) // 8 or 1, "big"
    )


class InterfaceNotImplemented(Exception):
    pass


class _DeprecatedValue:
    def __init__(self, value: object, message: str, warning_class):
        self.value = value
        self.message = message
        self.warning_class = warning_class


class _ModuleWithDeprecations(types.ModuleType):
    def __init__(self, module: types.ModuleType):
        super().__init__(module.__name__)
        self.__dict__["_module"] = module

    def __getattr__(self, attr: str) -> object:
        obj = getattr(self._module, attr)
        if isinstance(obj, _DeprecatedValue):
            warnings.warn(obj.message, obj.warning_class, stacklevel=2)
            obj = obj.value
        return obj

    def __setattr__(self, attr: str, value: object) -> None:
        setattr(self._module, attr, value)

    def __delattr__(self, attr: str) -> None:
        obj = getattr(self._module, attr)
        if isinstance(obj, _DeprecatedValue):
            warnings.warn(obj.message, obj.warning_class, stacklevel=2)

        delattr(self._module, attr)

    def __dir__(self) -> typing.Sequence[str]:
        return ["_module", *dir(self._module)]


def deprecated(
    value: object,
    module_name: str,
    message: str,
    warning_class: type[Warning],
    name: str | None = None,
) -> _DeprecatedValue:
    module = sys.modules[module_name]
    if not isinstance(module, _ModuleWithDeprecations):
        sys.modules[module_name] = module = _ModuleWithDeprecations(module)
    dv = _DeprecatedValue(value, message, warning_class)
    # Maintain backwards compatibility with `name is None` for pyOpenSSL.
    if name is not None:
        setattr(module, name, dv)
    return dv


def cached_property(func: typing.Callable) -> property:
    cached_name = f"_cached_{func}"
    sentinel = object()

    def inner(instance: object):
        cache = getattr(instance, cached_name, sentinel)
        if cache is not sentinel:
            return cache
        result = func(instance)
        setattr(instance, cached_name, result)
        return result

    return property(inner)


# Python 3.10 changed representation of enums. We use well-defined object
# representation and string representation from Python 3.9.
class Enum(enum.Enum):
    def __repr__(self) -> str:
        return f"<{self.__class__.__name__}.{self._name_}: {self._value_!r}>"

    def __str__(self) -> str:
        return f"{self.__class__.__name__}.{self._name_}"
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg