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✏️ /usr/lib/python3.9/site-packages/dns/wire.py

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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license

import contextlib
import struct
from typing import Iterator, Optional, Tuple

import dns.exception
import dns.name

class Parser:
    def __init__(self, wire: bytes, current: int = 0):
        self.wire = wire
        self.current = 0
        self.end = len(self.wire)
        if current:
            self.seek(current)
        self.furthest = current

def remaining(self) -> int:
        return self.end - self.current

def get_bytes(self, size: int) -> bytes:
        assert size >= 0
        if size > self.remaining():
            raise dns.exception.FormError
        output = self.wire[self.current : self.current + size]
        self.current += size
        self.furthest = max(self.furthest, self.current)
        return output

def get_counted_bytes(self, length_size: int = 1) -> bytes:
        length = int.from_bytes(self.get_bytes(length_size), "big")
        return self.get_bytes(length)

def get_remaining(self) -> bytes:
        return self.get_bytes(self.remaining())

def get_uint8(self) -> int:
        return struct.unpack("!B", self.get_bytes(1))[0]

def get_uint16(self) -> int:
        return struct.unpack("!H", self.get_bytes(2))[0]

def get_uint32(self) -> int:
        return struct.unpack("!I", self.get_bytes(4))[0]

def get_uint48(self) -> int:
        return int.from_bytes(self.get_bytes(6), "big")

def get_struct(self, format: str) -> Tuple:
        return struct.unpack(format, self.get_bytes(struct.calcsize(format)))

def get_name(self, origin: Optional["dns.name.Name"] = None) -> "dns.name.Name":
        name = dns.name.from_wire_parser(self)
        if origin:
            name = name.relativize(origin)
        return name

def seek(self, where: int) -> None:
        # Note that seeking to the end is OK!  (If you try to read
        # after such a seek, you'll get an exception as expected.)
        if where < 0 or where > self.end:
            raise dns.exception.FormError
        self.current = where

@contextlib.contextmanager
    def restrict_to(self, size: int) -> Iterator:
        assert size >= 0
        if size > self.remaining():
            raise dns.exception.FormError
        saved_end = self.end
        try:
            self.end = self.current + size
            yield
            # We make this check here and not in the finally as we
            # don't want to raise if we're already raising for some
            # other reason.
            if self.current != self.end:
                raise dns.exception.FormError
        finally:
            self.end = saved_end

@contextlib.contextmanager
    def restore_furthest(self) -> Iterator:
        try:
            yield None
        finally:
            self.current = self.furthest

Batal

⬅ site-packages 58 item

Nama	Tipe	Ukuran	Diubah	Perm	Aksi
📁 __pycache__	dir	—	28/11/25 19:28	0755	📂
📁 dnssecalgs	dir	—	28/11/25 19:28	0755	📂
📁 quic	dir	—	28/11/25 19:28	0755	📂
📁 rdtypes	dir	—	28/11/25 19:28	0755	📂
🐍 __init__.py	py	1.6 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 _asyncbackend.py	py	2.3 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 _asyncio_backend.py	py	8.8 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 _ddr.py	py	5.1 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 _features.py	py	2.3 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 _immutable_ctx.py	py	2.4 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 asyncbackend.py	py	2.7 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 asyncquery.py	py	26.2 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 asyncresolver.py	py	17.4 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 dnssec.py	py	39.7 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 dnssectypes.py	py	1.8 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 e164.py	py	3.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 edns.py	py	14.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 entropy.py	py	4.1 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 enum.py	py	3.6 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 exception.py	py	5.8 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 flags.py	py	2.7 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 grange.py	py	2.1 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 immutable.py	py	2 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 inet.py	py	5.6 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 ipv4.py	py	2.5 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 ipv6.py	py	6.4 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 message.py	py	64.4 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 name.py	py	41.7 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 namedict.py	py	3.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 nameserver.py	py	9.7 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 node.py	py	12.4 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 opcode.py	py	2.7 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 query.py	py	53.5 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 rcode.py	py	4.1 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 rdata.py	py	28.8 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 rdataclass.py	py	2.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 rdataset.py	py	16.4 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 rdatatype.py	py	7.2 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 renderer.py	py	11 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 resolver.py	py	71.8 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 reversename.py	py	3.7 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 rrset.py	py	9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 serial.py	py	3.5 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 set.py	py	8.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 tokenizer.py	py	23 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 transaction.py	py	22.1 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 tsig.py	py	11.1 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 tsigkeyring.py	py	2.6 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 ttl.py	py	2.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 update.py	py	12 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 version.py	py	1.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 versioned.py	py	11.5 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 win32util.py	py	8.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 wire.py	py	2.8 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 xfr.py	py	13 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 zone.py	py	50.9 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 zonefile.py	py	27.3 KB	19/02/24 01:35	0644	✏️ ⬇
🐍 zonetypes.py	py	690 B	19/02/24 01:35	0644	✏️ ⬇

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