The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point. Initially, only tag files that use BSD 4-Clause "Original" license. RelNotes: yes Differential Revision: https://reviews.freebsd.org/D13133
185 lines
4.7 KiB
C
185 lines
4.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* Portions of this software were developed for the FreeBSD Project by
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* ThinkSec AS and NAI Labs, the Security Research Division of Network
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* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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* ("CBOSS"), as part of the DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)util.c 8.4 (Berkeley) 4/2/94";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "chpass.h"
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static const char *months[] =
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{ "January", "February", "March", "April", "May", "June",
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"July", "August", "September", "October", "November",
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"December", NULL };
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char *
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ttoa(time_t tval)
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{
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struct tm *tp;
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static char tbuf[50];
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if (tval) {
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tp = localtime(&tval);
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(void)sprintf(tbuf, "%s %d, %d", months[tp->tm_mon],
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tp->tm_mday, tp->tm_year + 1900);
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}
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else
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*tbuf = '\0';
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return (tbuf);
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}
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int
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atot(char *p, time_t *store)
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{
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static struct tm *lt;
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char *t;
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const char **mp;
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time_t tval;
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int day, month, year;
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if (!*p) {
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*store = 0;
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return (0);
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}
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if (!lt) {
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unsetenv("TZ");
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(void)time(&tval);
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lt = localtime(&tval);
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}
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if (!(t = strtok(p, " \t")))
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goto bad;
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if (isdigit(*t)) {
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month = atoi(t);
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} else {
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for (mp = months;; ++mp) {
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if (!*mp)
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goto bad;
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if (!strncasecmp(*mp, t, 3)) {
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month = mp - months + 1;
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break;
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}
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}
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}
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if (!(t = strtok(NULL, " \t,")) || !isdigit(*t))
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goto bad;
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day = atoi(t);
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if (!(t = strtok(NULL, " \t,")) || !isdigit(*t))
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goto bad;
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year = atoi(t);
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if (day < 1 || day > 31 || month < 1 || month > 12)
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goto bad;
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/* Allow two digit years 1969-2068 */
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if (year < 69)
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year += 2000;
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else if (year < 100)
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year += 1900;
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if (year < 1969)
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bad: return (1);
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lt->tm_year = year - 1900;
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lt->tm_mon = month - 1;
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lt->tm_mday = day;
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lt->tm_hour = 0;
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lt->tm_min = 0;
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lt->tm_sec = 0;
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lt->tm_isdst = -1;
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if ((tval = mktime(lt)) < 0)
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return (1);
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*store = tval;
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return (0);
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}
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int
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ok_shell(char *name)
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{
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char *p, *sh;
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setusershell();
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while ((sh = getusershell())) {
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if (!strcmp(name, sh)) {
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endusershell();
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return (1);
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}
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/* allow just shell name, but use "real" path */
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if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) {
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endusershell();
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return (1);
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}
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}
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endusershell();
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return (0);
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}
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char *
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dup_shell(char *name)
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{
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char *p, *sh, *ret;
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setusershell();
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while ((sh = getusershell())) {
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if (!strcmp(name, sh)) {
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endusershell();
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return (strdup(name));
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}
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/* allow just shell name, but use "real" path */
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if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) {
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ret = strdup(sh);
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endusershell();
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return (ret);
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}
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}
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endusershell();
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return (NULL);
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}
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