1*83ee113eSDavid van Moolenbroek /* $NetBSD: inet.h,v 1.1.1.3 2014/07/12 11:57:56 spz Exp $ */ 2*83ee113eSDavid van Moolenbroek /* inet.h 3*83ee113eSDavid van Moolenbroek 4*83ee113eSDavid van Moolenbroek Portable definitions for internet addresses */ 5*83ee113eSDavid van Moolenbroek 6*83ee113eSDavid van Moolenbroek /* 7*83ee113eSDavid van Moolenbroek * Copyright (c) 2004,2007,2009,2014 by Internet Systems Consortium, Inc. ("ISC") 8*83ee113eSDavid van Moolenbroek * Copyright (c) 1996-2003 by Internet Software Consortium 9*83ee113eSDavid van Moolenbroek * 10*83ee113eSDavid van Moolenbroek * Permission to use, copy, modify, and distribute this software for any 11*83ee113eSDavid van Moolenbroek * purpose with or without fee is hereby granted, provided that the above 12*83ee113eSDavid van Moolenbroek * copyright notice and this permission notice appear in all copies. 13*83ee113eSDavid van Moolenbroek * 14*83ee113eSDavid van Moolenbroek * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 15*83ee113eSDavid van Moolenbroek * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 16*83ee113eSDavid van Moolenbroek * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 17*83ee113eSDavid van Moolenbroek * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 18*83ee113eSDavid van Moolenbroek * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 19*83ee113eSDavid van Moolenbroek * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 20*83ee113eSDavid van Moolenbroek * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 21*83ee113eSDavid van Moolenbroek * 22*83ee113eSDavid van Moolenbroek * Internet Systems Consortium, Inc. 23*83ee113eSDavid van Moolenbroek * 950 Charter Street 24*83ee113eSDavid van Moolenbroek * Redwood City, CA 94063 25*83ee113eSDavid van Moolenbroek * <info@isc.org> 26*83ee113eSDavid van Moolenbroek * https://www.isc.org/ 27*83ee113eSDavid van Moolenbroek * 28*83ee113eSDavid van Moolenbroek */ 29*83ee113eSDavid van Moolenbroek 30*83ee113eSDavid van Moolenbroek /* An internet address of up to 128 bits. */ 31*83ee113eSDavid van Moolenbroek 32*83ee113eSDavid van Moolenbroek struct iaddr { 33*83ee113eSDavid van Moolenbroek unsigned len; 34*83ee113eSDavid van Moolenbroek unsigned char iabuf [16]; 35*83ee113eSDavid van Moolenbroek }; 36*83ee113eSDavid van Moolenbroek 37*83ee113eSDavid van Moolenbroek struct iaddrlist { 38*83ee113eSDavid van Moolenbroek struct iaddrlist *next; 39*83ee113eSDavid van Moolenbroek struct iaddr addr; 40*83ee113eSDavid van Moolenbroek }; 41*83ee113eSDavid van Moolenbroek 42*83ee113eSDavid van Moolenbroek 43*83ee113eSDavid van Moolenbroek /* struct iaddrmatch - used to compare a host IP against a subnet spec 44*83ee113eSDavid van Moolenbroek * 45*83ee113eSDavid van Moolenbroek * There is a space/speed tradeoff here implied by the use of a second 46*83ee113eSDavid van Moolenbroek * struct iaddr to hold the mask; while using an unsigned (byte!) to 47*83ee113eSDavid van Moolenbroek * represent the subnet prefix length would be more memory efficient, 48*83ee113eSDavid van Moolenbroek * it makes run-time mask comparisons more expensive. Since such 49*83ee113eSDavid van Moolenbroek * entries are used currently only in restricted circumstances 50*83ee113eSDavid van Moolenbroek * (wanting to reject a subnet), the decision is in favour of run-time 51*83ee113eSDavid van Moolenbroek * efficiency. 52*83ee113eSDavid van Moolenbroek */ 53*83ee113eSDavid van Moolenbroek 54*83ee113eSDavid van Moolenbroek struct iaddrmatch { 55*83ee113eSDavid van Moolenbroek struct iaddr addr; 56*83ee113eSDavid van Moolenbroek struct iaddr mask; 57*83ee113eSDavid van Moolenbroek }; 58*83ee113eSDavid van Moolenbroek 59*83ee113eSDavid van Moolenbroek /* its list ... */ 60*83ee113eSDavid van Moolenbroek 61*83ee113eSDavid van Moolenbroek struct iaddrmatchlist { 62*83ee113eSDavid van Moolenbroek struct iaddrmatchlist *next; 63*83ee113eSDavid van Moolenbroek struct iaddrmatch match; 64*83ee113eSDavid van Moolenbroek }; 65*83ee113eSDavid van Moolenbroek 66*83ee113eSDavid van Moolenbroek 67*83ee113eSDavid van Moolenbroek /* 68*83ee113eSDavid van Moolenbroek * Structure to store information about a CIDR network. 69*83ee113eSDavid van Moolenbroek */ 70*83ee113eSDavid van Moolenbroek 71*83ee113eSDavid van Moolenbroek struct iaddrcidrnet { 72*83ee113eSDavid van Moolenbroek struct iaddr lo_addr; 73*83ee113eSDavid van Moolenbroek int bits; 74*83ee113eSDavid van Moolenbroek }; 75*83ee113eSDavid van Moolenbroek 76*83ee113eSDavid van Moolenbroek struct iaddrcidrnetlist { 77*83ee113eSDavid van Moolenbroek struct iaddrcidrnetlist *next; 78*83ee113eSDavid van Moolenbroek struct iaddrcidrnet cidrnet; 79*83ee113eSDavid van Moolenbroek }; 80*83ee113eSDavid van Moolenbroek 81