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Current File : /opt/imunify360/venv/lib64/python3.11/site-packages/pycares/__init__.py
from ._cares import ffi as _ffi, lib as _lib
import _cffi_backend  # hint for bundler tools

if _lib.ARES_SUCCESS != _lib.ares_library_init(_lib.ARES_LIB_INIT_ALL):
    raise RuntimeError('Could not initialize c-ares')

from . import errno
from .utils import ascii_bytes, maybe_str, parse_name
from ._version import __version__

import collections.abc
import socket
import math
import functools
import sys


exported_pycares_symbols = [
    # Flag values
    'ARES_FLAG_USEVC',
    'ARES_FLAG_PRIMARY',
    'ARES_FLAG_IGNTC',
    'ARES_FLAG_NORECURSE',
    'ARES_FLAG_STAYOPEN',
    'ARES_FLAG_NOSEARCH',
    'ARES_FLAG_NOALIASES',
    'ARES_FLAG_NOCHECKRESP',

    # Nameinfo flag values
    'ARES_NI_NOFQDN',
    'ARES_NI_NUMERICHOST',
    'ARES_NI_NAMEREQD',
    'ARES_NI_NUMERICSERV',
    'ARES_NI_DGRAM',
    'ARES_NI_TCP',
    'ARES_NI_UDP',
    'ARES_NI_SCTP',
    'ARES_NI_DCCP',
    'ARES_NI_NUMERICSCOPE',
    'ARES_NI_LOOKUPHOST',
    'ARES_NI_LOOKUPSERVICE',
    'ARES_NI_IDN',
    'ARES_NI_IDN_ALLOW_UNASSIGNED',
    'ARES_NI_IDN_USE_STD3_ASCII_RULES',

    # Bad socket
    'ARES_SOCKET_BAD',
]

for symbol in exported_pycares_symbols:
    globals()[symbol] = getattr(_lib, symbol)


exported_pycares_symbols_map = {
    # Query types
    "QUERY_TYPE_A"     : "T_A",
    "QUERY_TYPE_AAAA"  : "T_AAAA",
    "QUERY_TYPE_ANY"   : "T_ANY",
    "QUERY_TYPE_CAA"   : "T_CAA",
    "QUERY_TYPE_CNAME" : "T_CNAME",
    "QUERY_TYPE_MX"    : "T_MX",
    "QUERY_TYPE_NAPTR" : "T_NAPTR",
    "QUERY_TYPE_NS"    : "T_NS",
    "QUERY_TYPE_PTR"   : "T_PTR",
    "QUERY_TYPE_SOA"   : "T_SOA",
    "QUERY_TYPE_SRV"   : "T_SRV",
    "QUERY_TYPE_TXT"   : "T_TXT",

    # Query classes
    "QUERY_CLASS_IN"   : "C_IN",
    "QUERY_CLASS_CHAOS": "C_CHAOS",
    "QUERY_CLASS_HS"   : "C_HS",
    "QUERY_CLASS_NONE" :"C_NONE",
    "QUERY_CLASS_ANY"  : "C_ANY",
}

for k, v in exported_pycares_symbols_map.items():
    globals()[k] = getattr(_lib, v)


globals()['ARES_VERSION'] = maybe_str(_ffi.string(_lib.ares_version(_ffi.NULL)))


PYCARES_ADDRTTL_SIZE = 256


class AresError(Exception):
    pass


# callback helpers

_global_set = set()

@_ffi.def_extern()
def _sock_state_cb(data, socket_fd, readable, writable):
    sock_state_cb = _ffi.from_handle(data)
    sock_state_cb(socket_fd, readable, writable)

@_ffi.def_extern()
def _host_cb(arg, status, timeouts, hostent):
    callback = _ffi.from_handle(arg)
    _global_set.discard(arg)

    if status != _lib.ARES_SUCCESS:
        result = None
    else:
        result = ares_host_result(hostent)
        status = None

    callback(result, status)

@_ffi.def_extern()
def _nameinfo_cb(arg, status, timeouts, node, service):
    callback = _ffi.from_handle(arg)
    _global_set.discard(arg)

    if status != _lib.ARES_SUCCESS:
        result = None
    else:
        result = ares_nameinfo_result(node, service)
        status = None

    callback(result, status)

@_ffi.def_extern()
def _query_cb(arg, status, timeouts, abuf, alen):
    callback, query_type = _ffi.from_handle(arg)
    _global_set.discard(arg)

    if status == _lib.ARES_SUCCESS:
        if query_type == _lib.T_ANY:
            result = []
            for qtype in (_lib.T_A, _lib.T_AAAA, _lib.T_CAA, _lib.T_CNAME, _lib.T_MX, _lib.T_NAPTR, _lib.T_NS, _lib.T_PTR, _lib.T_SOA, _lib.T_SRV, _lib.T_TXT):
                r, status = parse_result(qtype, abuf, alen)
                if status not in (None, _lib.ARES_ENODATA, _lib.ARES_EBADRESP):
                    result = None
                    break
                if r is not None:
                    if isinstance(r, collections.abc.Iterable):
                        result.extend(r)
                    else:
                        result.append(r)
            else:
                status = None
        else:
            result, status = parse_result(query_type, abuf, alen)
    else:
        result = None

    callback(result, status)

@_ffi.def_extern()
def _addrinfo_cb(arg, status, timeouts, res):
    callback = _ffi.from_handle(arg)
    _global_set.discard(arg)

    if status != _lib.ARES_SUCCESS:
        result = None
    else:
        result = ares_addrinfo_result(res)
        status = None

    callback(result, status)

def parse_result(query_type, abuf, alen):
    if query_type == _lib.T_A:
        addrttls = _ffi.new("struct ares_addrttl[]", PYCARES_ADDRTTL_SIZE)
        naddrttls = _ffi.new("int*", PYCARES_ADDRTTL_SIZE)
        parse_status = _lib.ares_parse_a_reply(abuf, alen, _ffi.NULL, addrttls, naddrttls)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = [ares_query_a_result(addrttls[i]) for i in range(naddrttls[0])]
            status = None
    elif query_type == _lib.T_AAAA:
        addrttls = _ffi.new("struct ares_addr6ttl[]", PYCARES_ADDRTTL_SIZE)
        naddrttls = _ffi.new("int*", PYCARES_ADDRTTL_SIZE)
        parse_status = _lib.ares_parse_aaaa_reply(abuf, alen, _ffi.NULL, addrttls, naddrttls)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = [ares_query_aaaa_result(addrttls[i]) for i in range(naddrttls[0])]
            status = None
    elif query_type == _lib.T_CAA:
        caa_reply = _ffi.new("struct ares_caa_reply **")
        parse_status = _lib.ares_parse_caa_reply(abuf, alen, caa_reply)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = []
            caa_reply_ptr = caa_reply[0]
            while caa_reply_ptr != _ffi.NULL:
                result.append(ares_query_caa_result(caa_reply_ptr))
                caa_reply_ptr = caa_reply_ptr.next
            _lib.ares_free_data(caa_reply[0])
            status = None
    elif query_type == _lib.T_CNAME:
        host = _ffi.new("struct hostent **")
        parse_status = _lib.ares_parse_a_reply(abuf, alen, host, _ffi.NULL, _ffi.NULL)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = ares_query_cname_result(host[0])
            _lib.ares_free_hostent(host[0])
            status = None
    elif query_type == _lib.T_MX:
        mx_reply = _ffi.new("struct ares_mx_reply **")
        parse_status = _lib.ares_parse_mx_reply(abuf, alen, mx_reply)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = []
            mx_reply_ptr = mx_reply[0]
            while mx_reply_ptr != _ffi.NULL:
                result.append(ares_query_mx_result(mx_reply_ptr))
                mx_reply_ptr = mx_reply_ptr.next
            _lib.ares_free_data(mx_reply[0])
            status = None
    elif query_type == _lib.T_NAPTR:
        naptr_reply = _ffi.new("struct ares_naptr_reply **")
        parse_status = _lib.ares_parse_naptr_reply(abuf, alen, naptr_reply)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = []
            naptr_reply_ptr = naptr_reply[0]
            while naptr_reply_ptr != _ffi.NULL:
                result.append(ares_query_naptr_result(naptr_reply_ptr))
                naptr_reply_ptr = naptr_reply_ptr.next
            _lib.ares_free_data(naptr_reply[0])
            status = None
    elif query_type == _lib.T_NS:
        hostent = _ffi.new("struct hostent **")
        parse_status = _lib.ares_parse_ns_reply(abuf, alen, hostent)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = []
            host = hostent[0]
            i = 0
            while host.h_aliases[i] != _ffi.NULL:
                result.append(ares_query_ns_result(host.h_aliases[i]))
                i += 1
            _lib.ares_free_hostent(host)
            status = None
    elif query_type == _lib.T_PTR:
        hostent = _ffi.new("struct hostent **")
        parse_status = _lib.ares_parse_ptr_reply(abuf, alen, _ffi.NULL, 0, socket.AF_UNSPEC, hostent)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            aliases = []
            host = hostent[0]
            i = 0
            while host.h_aliases[i] != _ffi.NULL:
                aliases.append(maybe_str(_ffi.string(host.h_aliases[i])))
                i += 1
            result = ares_query_ptr_result(host, aliases)
            _lib.ares_free_hostent(host)
            status = None
    elif query_type == _lib.T_SOA:
        soa_reply = _ffi.new("struct ares_soa_reply **")
        parse_status = _lib.ares_parse_soa_reply(abuf, alen, soa_reply)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = ares_query_soa_result(soa_reply[0])
            _lib.ares_free_data(soa_reply[0])
            status = None
    elif query_type == _lib.T_SRV:
        srv_reply = _ffi.new("struct ares_srv_reply **")
        parse_status = _lib.ares_parse_srv_reply(abuf, alen, srv_reply)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = []
            srv_reply_ptr = srv_reply[0]
            while srv_reply_ptr != _ffi.NULL:
                result.append(ares_query_srv_result(srv_reply_ptr))
                srv_reply_ptr = srv_reply_ptr.next
            _lib.ares_free_data(srv_reply[0])
            status = None
    elif query_type == _lib.T_TXT:
        txt_reply = _ffi.new("struct ares_txt_ext **")
        parse_status = _lib.ares_parse_txt_reply_ext(abuf, alen, txt_reply)
        if parse_status != _lib.ARES_SUCCESS:
            result = None
            status = parse_status
        else:
            result = []
            txt_reply_ptr = txt_reply[0]
            tmp_obj = None
            while True:
                if txt_reply_ptr == _ffi.NULL:
                    if tmp_obj is not None:
                        result.append(ares_query_txt_result(tmp_obj))
                    break
                if txt_reply_ptr.record_start == 1:
                    if tmp_obj is not None:
                        result.append(ares_query_txt_result(tmp_obj))
                    tmp_obj = ares_query_txt_result_chunk(txt_reply_ptr)
                else:
                    new_chunk = ares_query_txt_result_chunk(txt_reply_ptr)
                    tmp_obj.text += new_chunk.text
                txt_reply_ptr = txt_reply_ptr.next
            _lib.ares_free_data(txt_reply[0])
            status = None
    else:
        raise ValueError("invalid query type specified")

    return result, status


class Channel:
    __qtypes__ = (_lib.T_A, _lib.T_AAAA, _lib.T_ANY, _lib.T_CAA, _lib.T_CNAME, _lib.T_MX, _lib.T_NAPTR, _lib.T_NS, _lib.T_PTR, _lib.T_SOA, _lib.T_SRV, _lib.T_TXT)
    __qclasses__ = (_lib.C_IN, _lib.C_CHAOS, _lib.C_HS, _lib.C_NONE, _lib.C_ANY)

    def __init__(self,
                 flags = None,
                 timeout = None,
                 tries = None,
                 ndots = None,
                 tcp_port = None,
                 udp_port = None,
                 servers = None,
                 domains = None,
                 lookups = None,
                 sock_state_cb = None,
                 socket_send_buffer_size = None,
                 socket_receive_buffer_size = None,
                 rotate = False,
                 local_ip = None,
                 local_dev = None,
                 resolvconf_path = None):

        channel = _ffi.new("ares_channel *")
        options = _ffi.new("struct ares_options *")
        optmask = 0

        if flags is not None:
            options.flags = flags
            optmask = optmask | _lib.ARES_OPT_FLAGS

        if timeout is not None:
            options.timeout = int(timeout * 1000)
            optmask = optmask | _lib.ARES_OPT_TIMEOUTMS

        if tries is not None:
            options.tries = tries
            optmask = optmask |  _lib.ARES_OPT_TRIES

        if ndots is not None:
            options.ndots = ndots
            optmask = optmask |  _lib.ARES_OPT_NDOTS

        if tcp_port is not None:
            options.tcp_port = tcp_port
            optmask = optmask |  _lib.ARES_OPT_TCP_PORT

        if udp_port is not None:
            options.udp_port = udp_port
            optmask = optmask |  _lib.ARES_OPT_UDP_PORT

        if socket_send_buffer_size is not None:
            options.socket_send_buffer_size = socket_send_buffer_size
            optmask = optmask |  _lib.ARES_OPT_SOCK_SNDBUF

        if socket_receive_buffer_size is not None:
            options.socket_receive_buffer_size = socket_receive_buffer_size
            optmask = optmask |  _lib.ARES_OPT_SOCK_RCVBUF

        if sock_state_cb:
            if not callable(sock_state_cb):
                raise TypeError("sock_state_cb is not callable")

            userdata = _ffi.new_handle(sock_state_cb)

            # This must be kept alive while the channel is alive.
            self._sock_state_cb_handle = userdata

            options.sock_state_cb = _lib._sock_state_cb
            options.sock_state_cb_data = userdata
            optmask = optmask |  _lib.ARES_OPT_SOCK_STATE_CB

        if lookups:
            options.lookups = _ffi.new('char[]', ascii_bytes(lookups))
            optmask = optmask |  _lib.ARES_OPT_LOOKUPS

        if domains:
            strs = [_ffi.new("char[]", ascii_bytes(i)) for i in domains]
            c = _ffi.new("char *[%d]" % (len(domains) + 1))
            for i in range(len(domains)):
               c[i] = strs[i]

            options.domains = c
            options.ndomains = len(domains)
            optmask = optmask |  _lib.ARES_OPT_DOMAINS

        if rotate:
            optmask = optmask |  _lib.ARES_OPT_ROTATE

        if resolvconf_path is not None:
            optmask = optmask |  _lib.ARES_OPT_RESOLVCONF
            options.resolvconf_path = _ffi.new('char[]', ascii_bytes(resolvconf_path))

        r = _lib.ares_init_options(channel, options, optmask)
        if r != _lib.ARES_SUCCESS:
            raise AresError('Failed to initialize c-ares channel')

        self._channel = _ffi.gc(channel, lambda x: _lib.ares_destroy(x[0]))

        if servers:
            self.servers = servers

        if local_ip:
            self.set_local_ip(local_ip)

        if local_dev:
            self.set_local_dev(local_dev)

    def cancel(self):
        _lib.ares_cancel(self._channel[0])

    @property
    def servers(self):
        servers = _ffi.new("struct ares_addr_node **")

        r = _lib.ares_get_servers(self._channel[0], servers)
        if r != _lib.ARES_SUCCESS:
            raise AresError(r, errno.strerror(r))

        server_list = []
        server = _ffi.new("struct ares_addr_node **", servers[0])
        while True:
            if server == _ffi.NULL:
                break

            ip = _ffi.new("char []", _lib.INET6_ADDRSTRLEN)
            s = server[0]
            if _ffi.NULL != _lib.ares_inet_ntop(s.family, _ffi.addressof(s.addr), ip, _lib.INET6_ADDRSTRLEN):
                server_list.append(maybe_str(_ffi.string(ip, _lib.INET6_ADDRSTRLEN)))

            server = s.next

        return server_list

    @servers.setter
    def servers(self, servers):
        c = _ffi.new("struct ares_addr_node[%d]" % len(servers))
        for i, server in enumerate(servers):
            if _lib.ares_inet_pton(socket.AF_INET, ascii_bytes(server), _ffi.addressof(c[i].addr.addr4)) == 1:
                c[i].family = socket.AF_INET
            elif _lib.ares_inet_pton(socket.AF_INET6, ascii_bytes(server), _ffi.addressof(c[i].addr.addr6)) == 1:
                c[i].family = socket.AF_INET6
            else:
                raise ValueError("invalid IP address")

            if i > 0:
                c[i - 1].next = _ffi.addressof(c[i])

        r = _lib.ares_set_servers(self._channel[0], c)
        if r != _lib.ARES_SUCCESS:
            raise AresError(r, errno.strerror(r))

    def getsock(self):
        rfds = []
        wfds = []
        socks = _ffi.new("ares_socket_t [%d]" % _lib.ARES_GETSOCK_MAXNUM)
        bitmask = _lib.ares_getsock(self._channel[0], socks, _lib.ARES_GETSOCK_MAXNUM)
        for i in range(_lib.ARES_GETSOCK_MAXNUM):
            if _lib.ARES_GETSOCK_READABLE(bitmask, i):
                rfds.append(socks[i])
            if _lib.ARES_GETSOCK_WRITABLE(bitmask, i):
                wfds.append(socks[i])

        return rfds, wfds

    def process_fd(self, read_fd, write_fd):
        _lib.ares_process_fd(self._channel[0], _ffi.cast("ares_socket_t", read_fd), _ffi.cast("ares_socket_t", write_fd))

    def timeout(self, t = None):
        maxtv = _ffi.NULL
        tv = _ffi.new("struct timeval*")

        if t is not None:
            if t >= 0.0:
                maxtv = _ffi.new("struct timeval*")
                maxtv.tv_sec = int(math.floor(t))
                maxtv.tv_usec = int(math.fmod(t, 1.0) * 1000000)
            else:
                raise ValueError("timeout needs to be a positive number or None")

        _lib.ares_timeout(self._channel[0], maxtv, tv)

        if tv == _ffi.NULL:
            return 0.0

        return (tv.tv_sec + tv.tv_usec / 1000000.0)

    def gethostbyaddr(self, addr, callback):
        if not callable(callback):
            raise TypeError("a callable is required")

        addr4 = _ffi.new("struct in_addr*")
        addr6 = _ffi.new("struct ares_in6_addr*")
        if _lib.ares_inet_pton(socket.AF_INET, ascii_bytes(addr), (addr4)) == 1:
            address = addr4
            family = socket.AF_INET
        elif _lib.ares_inet_pton(socket.AF_INET6, ascii_bytes(addr), (addr6)) == 1:
            address = addr6
            family = socket.AF_INET6
        else:
            raise ValueError("invalid IP address")

        userdata = _ffi.new_handle(callback)
        _global_set.add(userdata)
        _lib.ares_gethostbyaddr(self._channel[0], address, _ffi.sizeof(address[0]), family, _lib._host_cb, userdata)

    def gethostbyname(self, name, family, callback):
        if not callable(callback):
            raise TypeError("a callable is required")

        userdata = _ffi.new_handle(callback)
        _global_set.add(userdata)
        _lib.ares_gethostbyname(self._channel[0], parse_name(name), family, _lib._host_cb, userdata)

    def getaddrinfo(self, host, port, callback, family=0, type=0, proto=0, flags=0):
        if not callable(callback):
            raise TypeError("a callable is required")

        if port is None:
            service = _ffi.NULL
        elif isinstance(port, int):
            service = str(port).encode('ascii')
        else:
            service = ascii_bytes(port)

        userdata = _ffi.new_handle(callback)
        _global_set.add(userdata)

        hints = _ffi.new('struct ares_addrinfo_hints*')
        hints.ai_flags = flags
        hints.ai_family = family
        hints.ai_socktype = type
        hints.ai_protocol = proto
        _lib.ares_getaddrinfo(self._channel[0], parse_name(host), service, hints, _lib._addrinfo_cb, userdata)

    def query(self, name, query_type, callback, query_class=None):
        self._do_query(_lib.ares_query, name, query_type, callback, query_class=query_class)

    def search(self, name, query_type, callback, query_class=None):
        self._do_query(_lib.ares_search, name, query_type, callback, query_class=query_class)

    def _do_query(self, func, name, query_type, callback, query_class=None):
        if not callable(callback):
            raise TypeError('a callable is required')

        if query_type not in self.__qtypes__:
            raise ValueError('invalid query type specified')

        if query_class is None:
            query_class = _lib.C_IN

        if query_class not in self.__qclasses__:
            raise ValueError('invalid query class specified')

        userdata = _ffi.new_handle((callback, query_type))
        _global_set.add(userdata)
        func(self._channel[0], parse_name(name), query_class, query_type, _lib._query_cb, userdata)

    def set_local_ip(self, ip):
        addr4 = _ffi.new("struct in_addr*")
        addr6 = _ffi.new("struct ares_in6_addr*")
        if _lib.ares_inet_pton(socket.AF_INET, ascii_bytes(ip), addr4) == 1:
            _lib.ares_set_local_ip4(self._channel[0], socket.ntohl(addr4.s_addr))
        elif _lib.ares_inet_pton(socket.AF_INET6, ascii_bytes(ip), addr6) == 1:
            _lib.ares_set_local_ip6(self._channel[0], addr6)
        else:
            raise ValueError("invalid IP address")

    def getnameinfo(self, address, flags, callback):
        if not callable(callback):
            raise TypeError("a callable is required")

        if len(address) == 2:
            (ip, port) = address
            sa4 = _ffi.new("struct sockaddr_in*")
            if _lib.ares_inet_pton(socket.AF_INET, ascii_bytes(ip), _ffi.addressof(sa4.sin_addr)) != 1:
                raise ValueError("Invalid IPv4 address %r" % ip)
            sa4.sin_family = socket.AF_INET
            sa4.sin_port = socket.htons(port)
            sa = sa4
        elif len(address) == 4:
            (ip, port, flowinfo, scope_id) = address
            sa6 = _ffi.new("struct sockaddr_in6*")
            if _lib.ares_inet_pton(socket.AF_INET6, ascii_bytes(ip), _ffi.addressof(sa6.sin6_addr)) != 1:
                raise ValueError("Invalid IPv6 address %r" % ip)
            sa6.sin6_family = socket.AF_INET6
            sa6.sin6_port = socket.htons(port)
            sa6.sin6_flowinfo = socket.htonl(flowinfo) # I'm unsure about byteorder here.
            sa6.sin6_scope_id = scope_id # Yes, without htonl.
            sa = sa6
        else:
            raise ValueError("Invalid address argument")

        userdata = _ffi.new_handle(callback)
        _global_set.add(userdata)
        _lib.ares_getnameinfo(self._channel[0], _ffi.cast("struct sockaddr*", sa), _ffi.sizeof(sa[0]), flags, _lib._nameinfo_cb, userdata)

    def set_local_dev(self, dev):
        _lib.ares_set_local_dev(self._channel[0], dev)


class AresResult:
    __slots__ = ()

    def __repr__(self):
        attrs = ['%s=%s' % (a, getattr(self, a)) for a in self.__slots__]
        return '<%s> %s' % (self.__class__.__name__, ', '.join(attrs))


# DNS query result types
#

class ares_query_a_result(AresResult):
    __slots__ = ('host', 'ttl')
    type = 'A'

    def __init__(self, ares_addrttl):
        buf = _ffi.new("char[]", _lib.INET6_ADDRSTRLEN)
        _lib.ares_inet_ntop(socket.AF_INET, _ffi.addressof(ares_addrttl.ipaddr), buf, _lib.INET6_ADDRSTRLEN)
        self.host = maybe_str(_ffi.string(buf, _lib.INET6_ADDRSTRLEN))
        self.ttl = ares_addrttl.ttl


class ares_query_aaaa_result(AresResult):
    __slots__ = ('host', 'ttl')
    type = 'AAAA'

    def __init__(self, ares_addrttl):
        buf = _ffi.new("char[]", _lib.INET6_ADDRSTRLEN)
        _lib.ares_inet_ntop(socket.AF_INET6, _ffi.addressof(ares_addrttl.ip6addr), buf, _lib.INET6_ADDRSTRLEN)
        self.host = maybe_str(_ffi.string(buf, _lib.INET6_ADDRSTRLEN))
        self.ttl = ares_addrttl.ttl


class  ares_query_caa_result(AresResult):
    __slots__ = ('critical', 'property', 'value', 'ttl')
    type = 'CAA'

    def __init__(self, caa):
        self.critical = caa.critical
        self.property = maybe_str(_ffi.string(caa.property, caa.plength))
        self.value = maybe_str(_ffi.string(caa.value, caa.length))
        self.ttl = -1


class ares_query_cname_result(AresResult):
    __slots__ = ('cname', 'ttl')
    type = 'CNAME'

    def __init__(self, host):
        self.cname = maybe_str(_ffi.string(host.h_name))
        self.ttl = -1


class ares_query_mx_result(AresResult):
    __slots__ = ('host', 'priority', 'ttl')
    type = 'MX'

    def __init__(self, mx):
        self.host = maybe_str(_ffi.string(mx.host))
        self.priority = mx.priority
        self.ttl = -1


class ares_query_naptr_result(AresResult):
    __slots__ = ('order', 'preference', 'flags', 'service', 'regex', 'replacement', 'ttl')
    type = 'NAPTR'

    def __init__(self, naptr):
        self.order = naptr.order
        self.preference = naptr.preference
        self.flags = maybe_str(_ffi.string(naptr.flags))
        self.service = maybe_str(_ffi.string(naptr.service))
        self.regex = maybe_str(_ffi.string(naptr.regexp))
        self.replacement = maybe_str(_ffi.string(naptr.replacement))
        self.ttl = -1


class ares_query_ns_result(AresResult):
    __slots__ = ('host', 'ttl')
    type = 'NS'

    def __init__(self, ns):
        self.host = maybe_str(_ffi.string(ns))
        self.ttl = -1


class ares_query_ptr_result(AresResult):
    __slots__ = ('name', 'ttl', 'aliases')
    type = 'PTR'

    def __init__(self, hostent, aliases):
        self.name = maybe_str(_ffi.string(hostent.h_name))
        self.aliases = aliases
        self.ttl = -1


class ares_query_soa_result(AresResult):
    __slots__ = ('nsname', 'hostmaster', 'serial', 'refresh', 'retry', 'expires', 'minttl', 'ttl')
    type = 'SOA'

    def __init__(self, soa):
        self.nsname = maybe_str(_ffi.string(soa.nsname))
        self.hostmaster = maybe_str(_ffi.string(soa.hostmaster))
        self.serial = soa.serial
        self.refresh = soa.refresh
        self.retry = soa.retry
        self.expires = soa.expire
        self.minttl = soa.minttl
        self.ttl = -1


class  ares_query_srv_result(AresResult):
    __slots__ = ('host', 'port', 'priority', 'weight', 'ttl')
    type = 'SRV'

    def __init__(self, srv):
        self.host = maybe_str(_ffi.string(srv.host))
        self.port = srv.port
        self.priority = srv.priority
        self.weight = srv.weight
        self.ttl = -1


class ares_query_txt_result(AresResult):
    __slots__ = ('text', 'ttl')
    type = 'TXT'

    def __init__(self, txt_chunk):
        self.text = maybe_str(txt_chunk.text)
        self.ttl = -1


class ares_query_txt_result_chunk(AresResult):
    __slots__ = ('text', 'ttl')
    type = 'TXT'

    def __init__(self, txt):
        self.text = _ffi.string(txt.txt)
        self.ttl = -1


# Other result types
#

class ares_host_result(AresResult):
    __slots__ = ('name', 'aliases', 'addresses')

    def __init__(self, hostent):
        self.name = maybe_str(_ffi.string(hostent.h_name))
        self.aliases = []
        self.addresses = []
        i = 0
        while hostent.h_aliases[i] != _ffi.NULL:
            self.aliases.append(maybe_str(_ffi.string(hostent.h_aliases[i])))
            i += 1

        i = 0
        while hostent.h_addr_list[i] != _ffi.NULL:
            buf = _ffi.new("char[]", _lib.INET6_ADDRSTRLEN)
            if _ffi.NULL != _lib.ares_inet_ntop(hostent.h_addrtype, hostent.h_addr_list[i], buf, _lib.INET6_ADDRSTRLEN):
                self.addresses.append(maybe_str(_ffi.string(buf, _lib.INET6_ADDRSTRLEN)))
            i += 1


class ares_nameinfo_result(AresResult):
    __slots__ = ('node', 'service')

    def __init__(self, node, service):
        self.node = maybe_str(_ffi.string(node))
        self.service = maybe_str(_ffi.string(service)) if service != _ffi.NULL else None


class ares_addrinfo_node_result(AresResult):
    __slots__ = ('ttl', 'flags', 'family', 'socktype', 'protocol', 'addr')

    def __init__(self, ares_node):
        self.ttl = ares_node.ai_ttl
        self.flags = ares_node.ai_flags
        self.socktype = ares_node.ai_socktype
        self.protocol = ares_node.ai_protocol

        addr = ares_node.ai_addr
        assert addr.sa_family == ares_node.ai_family
        ip = _ffi.new("char []", _lib.INET6_ADDRSTRLEN)
        if addr.sa_family == socket.AF_INET:
            self.family = socket.AF_INET
            s = _ffi.cast("struct sockaddr_in*", addr)
            if _ffi.NULL != _lib.ares_inet_ntop(s.sin_family, _ffi.addressof(s.sin_addr), ip, _lib.INET6_ADDRSTRLEN):
                # (address, port) 2-tuple for AF_INET
                self.addr = (_ffi.string(ip, _lib.INET6_ADDRSTRLEN), socket.ntohs(s.sin_port))
        elif addr.sa_family == socket.AF_INET6:
            self.family = socket.AF_INET6
            s = _ffi.cast("struct sockaddr_in6*", addr)
            if _ffi.NULL != _lib.ares_inet_ntop(s.sin6_family, _ffi.addressof(s.sin6_addr), ip, _lib.INET6_ADDRSTRLEN):
                # (address, port, flow info, scope id) 4-tuple for AF_INET6
                self.addr = (_ffi.string(ip, _lib.INET6_ADDRSTRLEN), socket.ntohs(s.sin6_port), s.sin6_flowinfo, s.sin6_scope_id)
        else:
            raise ValueError("invalid sockaddr family")


class ares_addrinfo_cname_result(AresResult):
    __slots__ = ('ttl', 'alias', 'name')

    def __init__(self, ares_cname):
        self.ttl = ares_cname.ttl
        self.alias = maybe_str(_ffi.string(ares_cname.alias))
        self.name = maybe_str(_ffi.string(ares_cname.name))


class ares_addrinfo_result(AresResult):
    __slots__ = ('cnames', 'nodes')

    def __init__(self, ares_addrinfo):
        self.cnames = []
        self.nodes = []
        cname_ptr = ares_addrinfo.cnames
        while cname_ptr != _ffi.NULL:
            self.cnames.append(ares_addrinfo_cname_result(cname_ptr))
            cname_ptr = cname_ptr.next
        node_ptr = ares_addrinfo.nodes
        while node_ptr != _ffi.NULL:
            self.nodes.append(ares_addrinfo_node_result(node_ptr))
            node_ptr = node_ptr.ai_next
        _lib.ares_freeaddrinfo(ares_addrinfo)



__all__ = exported_pycares_symbols + list(exported_pycares_symbols_map.keys()) + ['AresError', 'Channel', 'errno', '__version__']

del exported_pycares_symbols, exported_pycares_symbols_map

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LinuXploit