Build userland libalias using src/sys/netinet/libalias.

Reviewed by:	ru
Repocopy by:	peter

1 files changed, 0 insertions, 164 deletions

diff --git a/lib/libalias/alias_util.c b/lib/libalias/alias_util.c
deleted file mode 100644
index 687168e..0000000
--- a/lib/libalias/alias_util.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*-
- * Copyright (c) 2001 Charles Mott <cm@linktel.net>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-
-/*
-    Alias_util.c contains general utilities used by other functions
-    in the packet aliasing module.  At the moment, there are functions
-    for computing IP header and TCP packet checksums.
-
-    The checksum routines are based upon example code in a Unix networking
-    text written by Stevens (sorry, I can't remember the title -- but
-    at least this is a good author).
-
-    Initial Version:  August, 1996  (cjm)
-
-    Version 1.7:  January 9, 1997
-	 Added differential checksum update function.
-*/
-
-/*
-Note: the checksum routines assume that the actual checksum word has
-been zeroed out.  If the checksum word is filled with the proper value,
-then these routines will give a result of zero (useful for testing
-purposes);
-*/
-
-#include <stdio.h>
-#include <sys/types.h>
-#include <netinet/in_systm.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <netinet/tcp.h>
-
-#include "alias.h"
-#include "alias_local.h"
-
-u_short
-LibAliasInternetChecksum(struct libalias *la, u_short * ptr, int nbytes)
-{
-	int sum, oddbyte;
-
-	(void)la;
-
-	sum = 0;
-	while (nbytes > 1) {
-		sum += *ptr++;
-		nbytes -= 2;
-	}
-	if (nbytes == 1) {
-		oddbyte = 0;
-		((u_char *) & oddbyte)[0] = *(u_char *) ptr;
-		((u_char *) & oddbyte)[1] = 0;
-		sum += oddbyte;
-	}
-	sum = (sum >> 16) + (sum & 0xffff);
-	sum += (sum >> 16);
-	return (~sum);
-}
-
-u_short
-IpChecksum(struct ip *pip)
-{
-	return (PacketAliasInternetChecksum((u_short *) pip,
-	    (pip->ip_hl << 2)));
-
-}
-
-u_short
-TcpChecksum(struct ip *pip)
-{
-	u_short *ptr;
-	struct tcphdr *tc;
-	int nhdr, ntcp, nbytes;
-	int sum, oddbyte;
-
-	nhdr = pip->ip_hl << 2;
-	ntcp = ntohs(pip->ip_len) - nhdr;
-
-	tc = (struct tcphdr *)ip_next(pip);
-	ptr = (u_short *) tc;
-
-/* Add up TCP header and data */
-	nbytes = ntcp;
-	sum = 0;
-	while (nbytes > 1) {
-		sum += *ptr++;
-		nbytes -= 2;
-	}
-	if (nbytes == 1) {
-		oddbyte = 0;
-		((u_char *) & oddbyte)[0] = *(u_char *) ptr;
-		((u_char *) & oddbyte)[1] = 0;
-		sum += oddbyte;
-	}
-/* "Pseudo-header" data */
-	ptr = (u_short *) & (pip->ip_dst);
-	sum += *ptr++;
-	sum += *ptr;
-	ptr = (u_short *) & (pip->ip_src);
-	sum += *ptr++;
-	sum += *ptr;
-	sum += htons((u_short) ntcp);
-	sum += htons((u_short) pip->ip_p);
-
-/* Roll over carry bits */
-	sum = (sum >> 16) + (sum & 0xffff);
-	sum += (sum >> 16);
-
-/* Return checksum */
-	return ((u_short) ~ sum);
-}
-
-
-void
-DifferentialChecksum(u_short * cksum, void *newp, void *oldp, int n)
-{
-	int i;
-	int accumulate;
-	u_short *new = newp;
-	u_short *old = oldp;
-
-	accumulate = *cksum;
-	for (i = 0; i < n; i++) {
-		accumulate -= *new++;
-		accumulate += *old++;
-	}
-
-	if (accumulate < 0) {
-		accumulate = -accumulate;
-		accumulate = (accumulate >> 16) + (accumulate & 0xffff);
-		accumulate += accumulate >> 16;
-		*cksum = (u_short) ~ accumulate;
-	} else {
-		accumulate = (accumulate >> 16) + (accumulate & 0xffff);
-		accumulate += accumulate >> 16;
-		*cksum = (u_short) accumulate;
-	}
-}