142 lines
4.0 KiB
C
142 lines
4.0 KiB
C
/*-
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* Copyright (c) 1988 The Regents of the University of California.
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* All rights reserved.
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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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/*static char sccsid[] = "from: @(#)util.c 5.14 (Berkeley) 2/12/91";*/
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static char rcsid[] = "$Id: util.c,v 1.3 1994/01/03 08:21:14 cgd Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/time.h>
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#include <tzfile.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "chpass.h"
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#include "pathnames.h"
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static int dmsize[] =
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{ -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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static 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(tval)
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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 + TM_YEAR_BASE);
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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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atot(p, store)
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char *p;
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time_t *store;
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{
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register char *t, **mp;
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static struct tm *lt;
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time_t tval, time();
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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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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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if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t))
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goto bad;
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day = atoi(t);
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if (!(t = strtok((char *)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 || !year)
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goto bad;
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if (year < 100)
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year += TM_YEAR_BASE;
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if (year <= EPOCH_YEAR)
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bad: return(1);
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tval = isleap(year) && month > 2;
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for (--year; year >= EPOCH_YEAR; --year)
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tval += isleap(year) ?
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DAYSPERLYEAR : DAYSPERNYEAR;
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while (--month)
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tval += dmsize[month];
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tval += day;
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tval = tval * HOURSPERDAY * MINSPERHOUR * SECSPERMIN;
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tval -= lt->tm_gmtoff;
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*store = tval;
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return(0);
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}
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char *
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ok_shell(name)
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register char *name;
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{
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register char *p, *sh;
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char *getusershell();
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setusershell();
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while (sh = getusershell()) {
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if (!strcmp(name, sh))
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return(name);
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/* allow just shell name, but use "real" path */
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if ((p = rindex(sh, '/')) && !strcmp(name, p + 1))
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return(sh);
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}
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return(NULL);
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}
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