1 /* 2 * Copyright (c) 2021 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29 #include <stdbool.h> 30 31 #include <sys/types.h> 32 #include <sys/eventhandler.h> 33 34 enum net_filter_event_subsystems : uint32_t { 35 NET_FILTER_EVENT_PF = (1 << 0), 36 NET_FILTER_EVENT_SOCKET = (1 << 1), 37 NET_FILTER_EVENT_INTERFACE = (1 << 2), 38 NET_FILTER_EVENT_IP = (1 << 3), 39 NET_FILTER_EVENT_ALF = (1 << 4), 40 NET_FILTER_EVENT_PARENTAL_CONTROLS = (1 << 5), 41 NET_FILTER_EVENT_PF_PRIVATE_PROXY = (1 << 6), 42 }; 43 44 /* Marks subsystem filtering state. */ 45 void 46 net_filter_event_mark(enum net_filter_event_subsystems subsystem, bool compatible); 47 48 typedef void (*net_filter_event_callback_t) (struct eventhandler_entry_arg, 49 enum net_filter_event_subsystems); 50 51 /* Registers a function to be called when state changes. */ 52 void 53 net_filter_event_register(net_filter_event_callback_t callback); 54 55 /* Gets the state of the filters. */ 56 enum net_filter_event_subsystems 57 net_filter_event_get_state(void); 58