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Annotation of src/usr.bin/chpass/util.c, Revision 1.13

1.13    ! millert     1: /*     $OpenBSD: util.c,v 1.12 2009/10/27 23:59:36 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: #include <sys/types.h>
                     34:
                     35: #include <ctype.h>
                     36: #include <pwd.h>
                     37: #include <stdio.h>
                     38: #include <stdlib.h>
                     39: #include <string.h>
                     40: #include <time.h>
                     41: #include <unistd.h>
                     42:
                     43: #include "chpass.h"
                     44:
                     45: char *
1.5       deraadt    46: ttoa(char *buf, size_t len, time_t tval)
1.1       deraadt    47: {
1.4       deraadt    48:        if (tval) {
                     49:                struct tm *tp = localtime(&tval);
1.1       deraadt    50:
1.4       deraadt    51:                (void) strftime(buf, len, "%B %d, %Y", tp);
                     52:                buf[len - 1] = '\0';
1.5       deraadt    53:        } else if (len > 0)
1.4       deraadt    54:                *buf = '\0';
                     55:        return (buf);
1.5       deraadt    56: }
1.1       deraadt    57:
                     58: int
1.5       deraadt    59: atot(char *p, time_t *store)
1.1       deraadt    60: {
1.4       deraadt    61:        struct tm tm;
                     62:        char *t;
1.1       deraadt    63:
                     64:        if (!*p) {
                     65:                *store = 0;
                     66:                return (0);
                     67:        }
1.4       deraadt    68:        (void) memset(&tm, 0, sizeof(tm));
                     69:        for (t = p; (t = strchr(t, ',')) != NULL; t++)
                     70:                *t = ' ';
                     71:        t = strptime(p, "%B %d %Y", &tm);
                     72:        if (t == NULL || (*t != '\0' && *t != '\n'))
                     73:                return 1;
1.10      guenther   74:        tm.tm_isdst = -1;
1.4       deraadt    75:        *store = mktime(&tm);
                     76:        if (*store == (time_t) -1)
                     77:                return 1;
1.1       deraadt    78:        return (0);
                     79: }
                     80:
1.11      millert    81: int
                     82: ok_shell(char *name, char **out)
1.1       deraadt    83: {
                     84:        char *p, *sh;
                     85:
                     86:        setusershell();
1.4       deraadt    87:        while ((sh = getusershell()) != NULL) {
1.1       deraadt    88:                if (!strcmp(name, sh))
1.11      millert    89:                        break;
1.1       deraadt    90:                /* allow just shell name, but use "real" path */
                     91:                if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0)
1.11      millert    92:                        break;
1.1       deraadt    93:        }
1.11      millert    94:        if (sh && out)
                     95:                *out = strdup(sh);
                     96:        endusershell();
                     97:        return (sh != NULL);
1.1       deraadt    98: }