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/* $OpenBSD: util.c,v 1.12 2009/10/27 23:59:36 deraadt Exp $ */
/* $NetBSD: util.c,v 1.4 1995/03/26 04:55:35 glass Exp $ */
/*-
* Copyright (c) 1988, 1993, 1994
* The Regents of the University of California. 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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/types.h>
#include <ctype.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <tzfile.h>
#include <unistd.h>
#include "chpass.h"
char *
ttoa(char *buf, size_t len, time_t tval)
{
if (tval) {
struct tm *tp = localtime(&tval);
(void) strftime(buf, len, "%B %d, %Y", tp);
buf[len - 1] = '\0';
} else if (len > 0)
*buf = '\0';
return (buf);
}
int
atot(char *p, time_t *store)
{
struct tm tm;
char *t;
if (!*p) {
*store = 0;
return (0);
}
(void) memset(&tm, 0, sizeof(tm));
for (t = p; (t = strchr(t, ',')) != NULL; t++)
*t = ' ';
t = strptime(p, "%B %d %Y", &tm);
if (t == NULL || (*t != '\0' && *t != '\n'))
return 1;
tm.tm_isdst = -1;
*store = mktime(&tm);
if (*store == (time_t) -1)
return 1;
return (0);
}
int
ok_shell(char *name, char **out)
{
char *p, *sh;
setusershell();
while ((sh = getusershell()) != NULL) {
if (!strcmp(name, sh))
break;
/* allow just shell name, but use "real" path */
if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0)
break;
}
if (sh && out)
*out = strdup(sh);
endusershell();
return (sh != NULL);
}
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