def getnameinfo(self, ip_port, flags, callback): if not callable(callback): raise AresError("a callable is required") ip, port = ip_port if port < 0 or port > 65535: raise ValueError("port must be between 0 and 65535") sa4 = _ffi.new("struct sockaddr_in*") sa6 = _ffi.new("struct sockaddr_in6*") if 1 == _lib.ares_inet_pton(socket.AF_INET, s2b(ip), _ffi.addressof(sa4.sin_addr)): sa4.sin_family = socket.AF_INET sa4.sin_port = socket.htons(port) sa = sa4 elif 1 == _lib.ares_inet_pton(socket.AF_INET6, s2b(ip), _ffi.addressof(sa6.sin6_addr)): sa6.sin6_family = socket.AF_INET6 sa6.sin6_port = socket.htons(port) sa = sa6 else: raise ValueError("invalid IP address") userdata = _ffi.new_handle(callback) _global_set.add(userdata) _lib.ares_getnameinfo(self.channel, _ffi.cast("struct sockaddr*", sa), _ffi.sizeof(sa[0]), flags, _nameinfo_cb, userdata)
def set_local_ip(self, ip): addr4 = _ffi.new("struct in_addr*") addr6 = _ffi.new("struct ares_in6_addr*") if 1 == _lib.ares_inet_pton(socket.AF_INET, s2b(ip), addr4): _lib.ares_set_local_ip4(self.channel, socket.ntohl(addr4.s_addr)) elif 1 == _lib.ares_inet_pton(socket.AF_INET6, s2b(ip), addr6): _lib.ares_set_local_ip6(self.channel, addr6) else: raise ValueError("invalid IP address")
def _set_servers(self, servers): c = _ffi.new("struct ares_addr_node[%d]" % len(servers)) for i in range(len(servers)): if 1 == _lib.ares_inet_pton(socket.AF_INET, s2b(servers[i]), _ffi.addressof(c[i].addr.addr4)): c[i].family = socket.AF_INET elif 1 == _lib.ares_inet_pton(socket.AF_INET6, s2b(servers[i]), _ffi.addressof(c[i].addr.addr6)): 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, c) if r != _lib.ARES_SUCCESS: raise AresError()
def gethostbyaddr(self, name, 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 1 == _lib.ares_inet_pton(socket.AF_INET,s2b(name), (addr4)): address = addr4 family = socket.AF_INET elif 1 == _lib.ares_inet_pton(socket.AF_INET6, s2b(name), (addr6)): 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, (address), _ffi.sizeof(address[0]), family, _host_cb, userdata)