1 /* $OpenBSD: util.c,v 1.13 2015/03/15 00:41:28 millert Exp $ */
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. Neither the name of the University nor the names of its contributors
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 *
ttoa(char * buf,size_t len,time_t tval)46 ttoa(char *buf, size_t len, time_t tval)
47 {
48 if (tval) {
49 struct tm *tp = localtime(&tval);
50
51 (void) strftime(buf, len, "%B %d, %Y", tp);
52 buf[len - 1] = '\0';
53 } else if (len > 0)
54 *buf = '\0';
55 return (buf);
56 }
57
58 int
atot(char * p,time_t * store)59 atot(char *p, time_t *store)
60 {
61 struct tm tm;
62 char *t;
63
64 if (!*p) {
65 *store = 0;
66 return (0);
67 }
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;
74 tm.tm_isdst = -1;
75 *store = mktime(&tm);
76 if (*store == (time_t) -1)
77 return 1;
78 return (0);
79 }
80
81 int
ok_shell(char * name,char ** out)82 ok_shell(char *name, char **out)
83 {
84 char *p, *sh;
85
86 setusershell();
87 while ((sh = getusershell()) != NULL) {
88 if (!strcmp(name, sh))
89 break;
90 /* allow just shell name, but use "real" path */
91 if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0)
92 break;
93 }
94 if (sh && out)
95 *out = strdup(sh);
96 endusershell();
97 return (sh != NULL);
98 }
99