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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ 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