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Annotation of src/usr.bin/chpass/util.c, Revision 1.5

1.5     ! deraadt     1: /*     $OpenBSD: util.c,v 1.4 1998/03/30 06:59:34 deraadt Exp $        */
1.1       deraadt     2: /*     $NetBSD: util.c,v 1.4 1995/03/26 04:55:35 glass Exp $   */
                      3:
                      4: /*-
                      5:  * Copyright (c) 1988, 1993, 1994
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by the University of
                     19:  *     California, Berkeley and its contributors.
                     20:  * 4. Neither the name of the University nor the names of its contributors
                     21:  *    may be used to endorse or promote products derived from this software
                     22:  *    without specific prior written permission.
                     23:  *
                     24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     34:  * SUCH DAMAGE.
                     35:  */
                     36:
                     37: #ifndef lint
                     38: #if 0
                     39: static char sccsid[] = "@(#)util.c     8.4 (Berkeley) 4/2/94";
                     40: #else
1.5     ! deraadt    41: static char rcsid[] = "$OpenBSD: util.c,v 1.4 1998/03/30 06:59:34 deraadt Exp $";
1.1       deraadt    42: #endif
                     43: #endif /* not lint */
                     44:
                     45: #include <sys/types.h>
                     46:
                     47: #include <ctype.h>
                     48: #include <pwd.h>
                     49: #include <stdio.h>
                     50: #include <stdlib.h>
                     51: #include <string.h>
                     52: #include <time.h>
                     53: #include <tzfile.h>
                     54: #include <unistd.h>
                     55:
                     56: #include "chpass.h"
                     57: #include "pathnames.h"
                     58:
                     59: char *
1.5     ! deraadt    60: ttoa(char *buf, size_t len, time_t tval)
1.1       deraadt    61: {
1.4       deraadt    62:        if (tval) {
                     63:                struct tm *tp = localtime(&tval);
1.1       deraadt    64:
1.4       deraadt    65:                (void) strftime(buf, len, "%B %d, %Y", tp);
                     66:                buf[len - 1] = '\0';
1.5     ! deraadt    67:        } else if (len > 0)
1.4       deraadt    68:                *buf = '\0';
                     69:        return (buf);
1.5     ! deraadt    70: }
1.1       deraadt    71:
                     72: int
1.5     ! deraadt    73: atot(char *p, time_t *store)
1.1       deraadt    74: {
                     75:        static struct tm *lt;
1.4       deraadt    76:        struct tm tm;
1.5     ! deraadt    77:        time_t tval;
1.4       deraadt    78:        char *t;
1.1       deraadt    79:
                     80:        if (!*p) {
                     81:                *store = 0;
                     82:                return (0);
                     83:        }
                     84:        if (!lt) {
                     85:                unsetenv("TZ");
                     86:                (void)time(&tval);
                     87:                lt = localtime(&tval);
                     88:        }
1.4       deraadt    89:        (void) memset(&tm, 0, sizeof(tm));
                     90:        for (t = p; (t = strchr(t, ',')) != NULL; t++)
                     91:                *t = ' ';
                     92:        t = strptime(p, "%B %d %Y", &tm);
                     93:        if (t == NULL || (*t != '\0' && *t != '\n'))
                     94:                return 1;
                     95:        *store = mktime(&tm);
                     96:        if (*store == (time_t) -1)
                     97:                return 1;
1.1       deraadt    98:        return (0);
                     99: }
                    100:
                    101: char *
1.5     ! deraadt   102: ok_shell(char *name)
1.1       deraadt   103: {
                    104:        char *p, *sh;
                    105:
                    106:        setusershell();
1.4       deraadt   107:        while ((sh = getusershell()) != NULL) {
1.1       deraadt   108:                if (!strcmp(name, sh))
                    109:                        return (name);
                    110:                /* allow just shell name, but use "real" path */
                    111:                if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0)
                    112:                        return (sh);
                    113:        }
                    114:        return (NULL);
                    115: }