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📁 ..
📄 Makefile(3.09 KB)
📄 Makefile.depend(274 B)
📄 _secure_path.3(2.52 KB)
📄 _secure_path.c(2.33 KB)
📄 auth.c(1.66 KB)
📄 expand_number.3(2.61 KB)
📄 expand_number.c(2.45 KB)
📄 flopen.3(3.35 KB)
📄 flopen.c(3.69 KB)
📄 fparseln.3(4.53 KB)
📄 fparseln.c(5.27 KB)
📄 getlocalbase.3(3.82 KB)
📄 getlocalbase.c(2.62 KB)
📄 gr_util.c(14.2 KB)
📄 hexdump.3(3.01 KB)
📄 hexdump.c(2.98 KB)
📄 humanize_number.3(5.65 KB)
📄 humanize_number.c(5.35 KB)
📄 kinfo_getallproc.3(2.47 KB)
📄 kinfo_getallproc.c(2.67 KB)
📄 kinfo_getfile.3(2.59 KB)
📄 kinfo_getfile.c(1.46 KB)
📄 kinfo_getproc.3(2.44 KB)
📄 kinfo_getproc.c(2.13 KB)
📄 kinfo_getvmmap.3(2.85 KB)
📄 kinfo_getvmmap.c(1.47 KB)
📄 kinfo_getvmobject.3(2.46 KB)
📄 kinfo_getvmobject.c(2.58 KB)
📄 kld.3(2.69 KB)
📄 kld.c(2.5 KB)
📄 libutil.h(8.04 KB)
📄 login.conf.5(16.41 KB)
📄 login_auth.3(2.3 KB)
📄 login_auth.c(3.01 KB)
📄 login_cap.3(16.04 KB)
📄 login_cap.c(19.22 KB)
📄 login_cap.h(6.25 KB)
📄 login_class.3(6.83 KB)
📄 login_class.c(14 KB)
📄 login_crypt.c(1.92 KB)
📄 login_ok.3(4.27 KB)
📄 login_ok.c(5.76 KB)
📄 login_times.3(5.28 KB)
📄 login_times.c(3.72 KB)
📄 login_tty.3(2.25 KB)
📄 login_tty.c(2.03 KB)
📄 pidfile.3(6.75 KB)
📄 pidfile.c(7.22 KB)
📄 property.3(2.91 KB)
📄 property.c(5.85 KB)
📄 pty.3(4.17 KB)
📄 pty.c(2.99 KB)
📄 pw_util.3(6.88 KB)
📄 pw_util.c(15.18 KB)
📄 quotafile.3(7.32 KB)
📄 quotafile.c(14.98 KB)
📄 realhostname.3(2.97 KB)
📄 realhostname.c(5.59 KB)
📄 realhostname_sa.3(4.56 KB)
📄 stub.c(1.73 KB)
📁 tests
📄 trimdomain.3(2.72 KB)
📄 trimdomain.c(3.39 KB)
📄 uucplock.3(4.94 KB)
📄 uucplock.c(5.5 KB)

Editing: trimdomain.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
 *   Based on original work by Atsushi Murai <amurai@FreeBSD.org>
 * 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("$FreeBSD$");

#include <sys/param.h>

#include <libutil.h>
#include <string.h>
#include <unistd.h>

static int	isDISP(const char *);

/*-
 * Trim the current domain name from fullhost, but only if the result
 * is less than or equal to hostsize in length.
 *
 * This function understands $DISPLAY type fullhosts.
 *
 * For example:
 *
 *     trimdomain("abcde.my.domain", 5)       ->   "abcde"
 *     trimdomain("abcde.my.domain", 4)       ->   "abcde.my.domain"
 *     trimdomain("abcde.my.domain:0.0", 9)   ->   "abcde:0.0"
 *     trimdomain("abcde.my.domain:0.0", 8)   ->   "abcde.my.domain:0.0"
 */
void
trimdomain(char *fullhost, int hostsize)
{
	static size_t dlen;
	static int first = 1;
	static char domain[MAXHOSTNAMELEN];
	char *end, *s;
	size_t len;

if (first) {
		/* XXX: Should we assume that our domain is this persistent ? */
		first = 0;
		if (gethostname(domain, sizeof(domain) - 1) == 0 &&
		    (s = strchr(domain, '.')) != NULL)
			memmove(domain, s + 1, strlen(s + 1) + 1);
		else
			domain[0] = '\0';
		dlen = strlen(domain);
	}

if (domain[0] == '\0')
		return;

s = fullhost;
	end = s + hostsize + 1;
	if ((s = memchr(s, '.', (size_t)(end - s))) != NULL) {
		if (strncasecmp(s + 1, domain, dlen) == 0) {
			if (s[dlen + 1] == '\0') {
				/* Found -- lose the domain. */
				*s = '\0';
			} else if (s[dlen + 1] == ':' &&
			    isDISP(s + dlen + 2) &&
			    (len = strlen(s + dlen + 1)) < (size_t)(end - s)) {
				/* Found -- shuffle the DISPLAY back. */
				memmove(s, s + dlen + 1, len + 1);
			}
		}
	}
}

/*
 * Is the given string NN or NN.NN where ``NN'' is an all-numeric string ?
 */
static int
isDISP(const char *disp)
{
	size_t w;
	int res;

w = strspn(disp, "0123456789");
	res = 0;
	if (w > 0) {
		if (disp[w] == '\0')
			res = 1;	/* NN */
		else if (disp[w] == '.') {
			disp += w + 1;
			w = strspn(disp, "0123456789");
			if (w > 0 && disp[w] == '\0')
				res = 1;	/* NN.NN */
		}
	}
	return (res);
}

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Editing: trimdomain.c

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