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/* inet.h
Portable definitions for internet addresses */
/*
* Copyright (C) 2004-2022 Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996-2003 by Internet Software Consortium
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Internet Systems Consortium, Inc.
* PO Box 360
* Newmarket, NH 03857 USA
* <info@isc.org>
* https://www.isc.org/
*
*/
/* An internet address of up to 128 bits. */
struct iaddr {
unsigned len;
unsigned char iabuf [16];
};
struct iaddrlist {
struct iaddrlist *next;
struct iaddr addr;
};
/* struct iaddrmatch - used to compare a host IP against a subnet spec
*
* There is a space/speed tradeoff here implied by the use of a second
* struct iaddr to hold the mask; while using an unsigned (byte!) to
* represent the subnet prefix length would be more memory efficient,
* it makes run-time mask comparisons more expensive. Since such
* entries are used currently only in restricted circumstances
* (wanting to reject a subnet), the decision is in favour of run-time
* efficiency.
*/
struct iaddrmatch {
struct iaddr addr;
struct iaddr mask;
};
/* its list ... */
struct iaddrmatchlist {
struct iaddrmatchlist *next;
struct iaddrmatch match;
};
/*
* Structure to store information about a CIDR network.
*/
struct iaddrcidrnet {
struct iaddr lo_addr;
int bits;
};
struct iaddrcidrnetlist {
struct iaddrcidrnetlist *next;
struct iaddrcidrnet cidrnet;
};
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