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files >> //proc/thread-self/root/proc/self/root/opt/hc_python/lib/python3.8/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, )
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