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Annotation of src/usr.bin/chpass/util.c, Revision 1.6

1.6     ! millert     1: /*     $OpenBSD: util.c,v 1.5 2002/06/27 19:02:40 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.
1.6     ! millert    16:  * 3. Neither the name of the University nor the names of its contributors
1.1       deraadt    17:  *    may be used to endorse or promote products derived from this software
                     18:  *    without specific prior written permission.
                     19:  *
                     20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     30:  * SUCH DAMAGE.
                     31:  */
                     32:
                     33: #ifndef lint
                     34: #if 0
                     35: static char sccsid[] = "@(#)util.c     8.4 (Berkeley) 4/2/94";
                     36: #else
1.6     ! millert    37: static char rcsid[] = "$OpenBSD: util.c,v 1.5 2002/06/27 19:02:40 deraadt Exp $";
1.1       deraadt    38: #endif
                     39: #endif /* not lint */
                     40:
                     41: #include <sys/types.h>
                     42:
                     43: #include <ctype.h>
                     44: #include <pwd.h>
                     45: #include <stdio.h>
                     46: #include <stdlib.h>
                     47: #include <string.h>
                     48: #include <time.h>
                     49: #include <tzfile.h>
                     50: #include <unistd.h>
                     51:
                     52: #include "chpass.h"
                     53: #include "pathnames.h"
                     54:
                     55: char *
1.5       deraadt    56: ttoa(char *buf, size_t len, time_t tval)
1.1       deraadt    57: {
1.4       deraadt    58:        if (tval) {
                     59:                struct tm *tp = localtime(&tval);
1.1       deraadt    60:
1.4       deraadt    61:                (void) strftime(buf, len, "%B %d, %Y", tp);
                     62:                buf[len - 1] = '\0';
1.5       deraadt    63:        } else if (len > 0)
1.4       deraadt    64:                *buf = '\0';
                     65:        return (buf);
1.5       deraadt    66: }
1.1       deraadt    67:
                     68: int
1.5       deraadt    69: atot(char *p, time_t *store)
1.1       deraadt    70: {
                     71:        static struct tm *lt;
1.4       deraadt    72:        struct tm tm;
1.5       deraadt    73:        time_t tval;
1.4       deraadt    74:        char *t;
1.1       deraadt    75:
                     76:        if (!*p) {
                     77:                *store = 0;
                     78:                return (0);
                     79:        }
                     80:        if (!lt) {
                     81:                unsetenv("TZ");
                     82:                (void)time(&tval);
                     83:                lt = localtime(&tval);
                     84:        }
1.4       deraadt    85:        (void) memset(&tm, 0, sizeof(tm));
                     86:        for (t = p; (t = strchr(t, ',')) != NULL; t++)
                     87:                *t = ' ';
                     88:        t = strptime(p, "%B %d %Y", &tm);
                     89:        if (t == NULL || (*t != '\0' && *t != '\n'))
                     90:                return 1;
                     91:        *store = mktime(&tm);
                     92:        if (*store == (time_t) -1)
                     93:                return 1;
1.1       deraadt    94:        return (0);
                     95: }
                     96:
                     97: char *
1.5       deraadt    98: ok_shell(char *name)
1.1       deraadt    99: {
                    100:        char *p, *sh;
                    101:
                    102:        setusershell();
1.4       deraadt   103:        while ((sh = getusershell()) != NULL) {
1.1       deraadt   104:                if (!strcmp(name, sh))
                    105:                        return (name);
                    106:                /* allow just shell name, but use "real" path */
                    107:                if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0)
                    108:                        return (sh);
                    109:        }
                    110:        return (NULL);
                    111: }