| Server IP : 85.214.239.14 / Your IP : 3.142.42.247 Web Server : Apache/2.4.62 (Debian) System : Linux h2886529.stratoserver.net 4.9.0 #1 SMP Tue Jan 9 19:45:01 MSK 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.18 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : OFF Directory : /proc/2/task/2/root/proc/self/root/proc/2/root/proc/3/cwd/lib/python3/dist-packages/dns/ |
Upload File : |
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
"""Serial Number Arthimetic from RFC 1982"""
class Serial:
def __init__(self, value: int, bits: int = 32):
self.value = value % 2**bits
self.bits = bits
def __repr__(self):
return f"dns.serial.Serial({self.value}, {self.bits})"
def __eq__(self, other):
if isinstance(other, int):
other = Serial(other, self.bits)
elif not isinstance(other, Serial) or other.bits != self.bits:
return NotImplemented
return self.value == other.value
def __ne__(self, other):
if isinstance(other, int):
other = Serial(other, self.bits)
elif not isinstance(other, Serial) or other.bits != self.bits:
return NotImplemented
return self.value != other.value
def __lt__(self, other):
if isinstance(other, int):
other = Serial(other, self.bits)
elif not isinstance(other, Serial) or other.bits != self.bits:
return NotImplemented
if self.value < other.value and other.value - self.value < 2 ** (self.bits - 1):
return True
elif self.value > other.value and self.value - other.value > 2 ** (
self.bits - 1
):
return True
else:
return False
def __le__(self, other):
return self == other or self < other
def __gt__(self, other):
if isinstance(other, int):
other = Serial(other, self.bits)
elif not isinstance(other, Serial) or other.bits != self.bits:
return NotImplemented
if self.value < other.value and other.value - self.value > 2 ** (self.bits - 1):
return True
elif self.value > other.value and self.value - other.value < 2 ** (
self.bits - 1
):
return True
else:
return False
def __ge__(self, other):
return self == other or self > other
def __add__(self, other):
v = self.value
if isinstance(other, Serial):
delta = other.value
elif isinstance(other, int):
delta = other
else:
raise ValueError
if abs(delta) > (2 ** (self.bits - 1) - 1):
raise ValueError
v += delta
v = v % 2**self.bits
return Serial(v, self.bits)
def __iadd__(self, other):
v = self.value
if isinstance(other, Serial):
delta = other.value
elif isinstance(other, int):
delta = other
else:
raise ValueError
if abs(delta) > (2 ** (self.bits - 1) - 1):
raise ValueError
v += delta
v = v % 2**self.bits
self.value = v
return self
def __sub__(self, other):
v = self.value
if isinstance(other, Serial):
delta = other.value
elif isinstance(other, int):
delta = other
else:
raise ValueError
if abs(delta) > (2 ** (self.bits - 1) - 1):
raise ValueError
v -= delta
v = v % 2**self.bits
return Serial(v, self.bits)
def __isub__(self, other):
v = self.value
if isinstance(other, Serial):
delta = other.value
elif isinstance(other, int):
delta = other
else:
raise ValueError
if abs(delta) > (2 ** (self.bits - 1) - 1):
raise ValueError
v -= delta
v = v % 2**self.bits
self.value = v
return self