JFIF $
d d 7
Viewing File: /usr/lib/python3.9/site-packages/dns/nameserver.py
from typing import Optional, Union
from urllib.parse import urlparse
import dns.asyncbackend
import dns.asyncquery
import dns.inet
import dns.message
import dns.query
class Nameserver:
def __init__(self):
pass
def __str__(self):
raise NotImplementedError
def kind(self) -> str:
raise NotImplementedError
def is_always_max_size(self) -> bool:
raise NotImplementedError
def answer_nameserver(self) -> str:
raise NotImplementedError
def answer_port(self) -> int:
raise NotImplementedError
def query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
raise NotImplementedError
async def async_query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool,
backend: dns.asyncbackend.Backend,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
raise NotImplementedError
class AddressAndPortNameserver(Nameserver):
def __init__(self, address: str, port: int):
super().__init__()
self.address = address
self.port = port
def kind(self) -> str:
raise NotImplementedError
def is_always_max_size(self) -> bool:
return False
def __str__(self):
ns_kind = self.kind()
return f"{ns_kind}:{self.address}@{self.port}"
def answer_nameserver(self) -> str:
return self.address
def answer_port(self) -> int:
return self.port
class Do53Nameserver(AddressAndPortNameserver):
def __init__(self, address: str, port: int = 53):
super().__init__(address, port)
def kind(self):
return "Do53"
def query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
if max_size:
response = dns.query.tcp(
request,
self.address,
timeout=timeout,
port=self.port,
source=source,
source_port=source_port,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
)
else:
response = dns.query.udp(
request,
self.address,
timeout=timeout,
port=self.port,
source=source,
source_port=source_port,
raise_on_truncation=True,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
ignore_errors=True,
ignore_unexpected=True,
)
return response
async def async_query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool,
backend: dns.asyncbackend.Backend,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
if max_size:
response = await dns.asyncquery.tcp(
request,
self.address,
timeout=timeout,
port=self.port,
source=source,
source_port=source_port,
backend=backend,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
)
else:
response = await dns.asyncquery.udp(
request,
self.address,
timeout=timeout,
port=self.port,
source=source,
source_port=source_port,
raise_on_truncation=True,
backend=backend,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
ignore_errors=True,
ignore_unexpected=True,
)
return response
class DoHNameserver(Nameserver):
def __init__(
self,
url: str,
bootstrap_address: Optional[str] = None,
verify: Union[bool, str] = True,
want_get: bool = False,
):
super().__init__()
self.url = url
self.bootstrap_address = bootstrap_address
self.verify = verify
self.want_get = want_get
def kind(self):
return "DoH"
def is_always_max_size(self) -> bool:
return True
def __str__(self):
return self.url
def answer_nameserver(self) -> str:
return self.url
def answer_port(self) -> int:
port = urlparse(self.url).port
if port is None:
port = 443
return port
def query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool = False,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
return dns.query.https(
request,
self.url,
timeout=timeout,
source=source,
source_port=source_port,
bootstrap_address=self.bootstrap_address,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
verify=self.verify,
post=(not self.want_get),
)
async def async_query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool,
backend: dns.asyncbackend.Backend,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
return await dns.asyncquery.https(
request,
self.url,
timeout=timeout,
source=source,
source_port=source_port,
bootstrap_address=self.bootstrap_address,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
verify=self.verify,
post=(not self.want_get),
)
class DoTNameserver(AddressAndPortNameserver):
def __init__(
self,
address: str,
port: int = 853,
hostname: Optional[str] = None,
verify: Union[bool, str] = True,
):
super().__init__(address, port)
self.hostname = hostname
self.verify = verify
def kind(self):
return "DoT"
def query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool = False,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
return dns.query.tls(
request,
self.address,
port=self.port,
timeout=timeout,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
server_hostname=self.hostname,
verify=self.verify,
)
async def async_query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool,
backend: dns.asyncbackend.Backend,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
return await dns.asyncquery.tls(
request,
self.address,
port=self.port,
timeout=timeout,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
server_hostname=self.hostname,
verify=self.verify,
)
class DoQNameserver(AddressAndPortNameserver):
def __init__(
self,
address: str,
port: int = 853,
verify: Union[bool, str] = True,
server_hostname: Optional[str] = None,
):
super().__init__(address, port)
self.verify = verify
self.server_hostname = server_hostname
def kind(self):
return "DoQ"
def query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool = False,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
return dns.query.quic(
request,
self.address,
port=self.port,
timeout=timeout,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
verify=self.verify,
server_hostname=self.server_hostname,
)
async def async_query(
self,
request: dns.message.QueryMessage,
timeout: float,
source: Optional[str],
source_port: int,
max_size: bool,
backend: dns.asyncbackend.Backend,
one_rr_per_rrset: bool = False,
ignore_trailing: bool = False,
) -> dns.message.Message:
return await dns.asyncquery.quic(
request,
self.address,
port=self.port,
timeout=timeout,
one_rr_per_rrset=one_rr_per_rrset,
ignore_trailing=ignore_trailing,
verify=self.verify,
server_hostname=self.server_hostname,
)
Back to Directory
nL+D550H?Mx ,D"v]qv;6*Zqn)ZP 0 !1 A "#a$2Qr D8 a Ri[f\mIykIw0 cuFcRı?lO7к_f˓[C$殷WF<_W ԣs KcëIzyQy /_LKℂ;C",pFA: /]=H ~,ls/9ć:[=/#f;)x {ٛEQ )~ =𘙲r*2~ a _V=' kumF D}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq 1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo( 3=M(zȰ+i*NA r6KnSl )!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\ ͔]ޒ SJȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtf h9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N +0e2]] 9VTPO7h(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
τVYTD I62'8Y2 7'\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
G jhsǜNlɻ}o7 #S6aw4!OSrD57%|?x>L
|/nD6?/8w#[)L7+6〼T ATg ! %5MmZ/c-{1_Je"|^$'O&ޱմ Trb$ w)R$&
N1EtdU3Uȉ1pM" N*(DN yd96.(jQ)X
5cQɎMyW? Q*!R>6=7)Xj5`J]e 8%t!+'!1Q 5 !1 AQaqё#2"0BRb ? Gt^## .llQT $v,,m 㵜5 ubV =sY+@d{N! dnO< .-B; _wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc. WDtA$j@:) -# u
c1<@ۗ9F)KJ-hpP]_x[qBlbp ʖw q"LFGd ƶ*s+ډ_Zc"? %t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi` ]uJVoV DG< SB 6ϏQ@ TiUly OU0kfV~~}SZ@*WUUi##; s/[ =!7}" WN]'(L! ~y5g9T̅JkbM' +s:S + B)v@Mj
e Cf jE 0Y\QnzG1д~Wo{T 9?`Rmyhsy3!HAD]mc1~2L Su7xT;j$`}4->L#vzŏ ILS ֭ T { rjGKC; bpU= -`BsK.SFw4Mq]ZdHS0)tLg