Annotation of src/usr.bin/chpass/util.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: util.c,v 1.4 1995/03/26 04:55:35 glass Exp $ */
! 2:
! 3: /*-
! 4: * Copyright (c) 1988, 1993, 1994
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by the University of
! 18: * California, Berkeley and its contributors.
! 19: * 4. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: */
! 35:
! 36: #ifndef lint
! 37: #if 0
! 38: static char sccsid[] = "@(#)util.c 8.4 (Berkeley) 4/2/94";
! 39: #else
! 40: static char rcsid[] = "$NetBSD: util.c,v 1.4 1995/03/26 04:55:35 glass Exp $";
! 41: #endif
! 42: #endif /* not lint */
! 43:
! 44: #include <sys/types.h>
! 45:
! 46: #include <ctype.h>
! 47: #include <pwd.h>
! 48: #include <stdio.h>
! 49: #include <stdlib.h>
! 50: #include <string.h>
! 51: #include <time.h>
! 52: #include <tzfile.h>
! 53: #include <unistd.h>
! 54:
! 55: #include "chpass.h"
! 56: #include "pathnames.h"
! 57:
! 58: static int dmsize[] =
! 59: { -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
! 60: static char *months[] =
! 61: { "January", "February", "March", "April", "May", "June",
! 62: "July", "August", "September", "October", "November",
! 63: "December", NULL };
! 64:
! 65: char *
! 66: ttoa(tval)
! 67: time_t tval;
! 68: {
! 69: struct tm *tp;
! 70: static char tbuf[50];
! 71:
! 72: if (tval) {
! 73: tp = localtime(&tval);
! 74: (void)sprintf(tbuf, "%s %d, %d", months[tp->tm_mon],
! 75: tp->tm_mday, tp->tm_year + TM_YEAR_BASE);
! 76: }
! 77: else
! 78: *tbuf = '\0';
! 79: return (tbuf);
! 80: }
! 81:
! 82: int
! 83: atot(p, store)
! 84: char *p;
! 85: time_t *store;
! 86: {
! 87: static struct tm *lt;
! 88: char *t, **mp;
! 89: time_t tval;
! 90: int day, month, year;
! 91:
! 92: if (!*p) {
! 93: *store = 0;
! 94: return (0);
! 95: }
! 96: if (!lt) {
! 97: unsetenv("TZ");
! 98: (void)time(&tval);
! 99: lt = localtime(&tval);
! 100: }
! 101: if (!(t = strtok(p, " \t")))
! 102: goto bad;
! 103: for (mp = months;; ++mp) {
! 104: if (!*mp)
! 105: goto bad;
! 106: if (!strncasecmp(*mp, t, 3)) {
! 107: month = mp - months + 1;
! 108: break;
! 109: }
! 110: }
! 111: if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t))
! 112: goto bad;
! 113: day = atoi(t);
! 114: if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t))
! 115: goto bad;
! 116: year = atoi(t);
! 117: if (day < 1 || day > 31 || month < 1 || month > 12 || !year)
! 118: goto bad;
! 119: if (year < 100)
! 120: year += TM_YEAR_BASE;
! 121: if (year <= EPOCH_YEAR)
! 122: bad: return (1);
! 123: tval = isleap(year) && month > 2;
! 124: for (--year; year >= EPOCH_YEAR; --year)
! 125: tval += isleap(year) ?
! 126: DAYSPERLYEAR : DAYSPERNYEAR;
! 127: while (--month)
! 128: tval += dmsize[month];
! 129: tval += day;
! 130: tval = tval * HOURSPERDAY * MINSPERHOUR * SECSPERMIN;
! 131: tval -= lt->tm_gmtoff;
! 132: *store = tval;
! 133: return (0);
! 134: }
! 135:
! 136: char *
! 137: ok_shell(name)
! 138: char *name;
! 139: {
! 140: char *p, *sh;
! 141:
! 142: setusershell();
! 143: while (sh = getusershell()) {
! 144: if (!strcmp(name, sh))
! 145: return (name);
! 146: /* allow just shell name, but use "real" path */
! 147: if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0)
! 148: return (sh);
! 149: }
! 150: return (NULL);
! 151: }
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