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c61fa9d9 WJ |
1 | /*- |
2 | * Copyright (c) 1988 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)util.c 5.14 (Berkeley) 2/12/91"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | #include <sys/types.h> | |
39 | #include <sys/time.h> | |
40 | #include <tzfile.h> | |
41 | #include <pwd.h> | |
42 | #include <stdio.h> | |
43 | #include <string.h> | |
44 | #include <ctype.h> | |
45 | #include "chpass.h" | |
46 | #include "pathnames.h" | |
47 | ||
48 | static int dmsize[] = | |
49 | { -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
50 | static char *months[] = | |
51 | { "January", "February", "March", "April", "May", "June", | |
52 | "July", "August", "September", "October", "November", | |
53 | "December", NULL }; | |
54 | char * | |
55 | ttoa(tval) | |
56 | time_t tval; | |
57 | { | |
58 | struct tm *tp; | |
59 | static char tbuf[50]; | |
60 | ||
61 | if (tval) { | |
62 | tp = localtime(&tval); | |
63 | (void)sprintf(tbuf, "%s %d, 19%d", months[tp->tm_mon], | |
64 | tp->tm_mday, tp->tm_year); | |
65 | } | |
66 | else | |
67 | *tbuf = '\0'; | |
68 | return(tbuf); | |
69 | } | |
70 | ||
71 | atot(p, store) | |
72 | char *p; | |
73 | time_t *store; | |
74 | { | |
75 | register char *t, **mp; | |
76 | static struct tm *lt; | |
77 | time_t tval, time(); | |
78 | int day, month, year; | |
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 | } | |
89 | if (!(t = strtok(p, " \t"))) | |
90 | goto bad; | |
91 | for (mp = months;; ++mp) { | |
92 | if (!*mp) | |
93 | goto bad; | |
94 | if (!strncasecmp(*mp, t, 3)) { | |
95 | month = mp - months + 1; | |
96 | break; | |
97 | } | |
98 | } | |
99 | if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) | |
100 | goto bad; | |
101 | day = atoi(t); | |
102 | if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) | |
103 | goto bad; | |
104 | year = atoi(t); | |
105 | if (day < 1 || day > 31 || month < 1 || month > 12 || !year) | |
106 | goto bad; | |
107 | if (year < 100) | |
108 | year += TM_YEAR_BASE; | |
109 | if (year <= EPOCH_YEAR) | |
110 | bad: return(1); | |
111 | tval = isleap(year) && month > 2; | |
112 | for (--year; year >= EPOCH_YEAR; --year) | |
113 | tval += isleap(year) ? | |
114 | DAYSPERLYEAR : DAYSPERNYEAR; | |
115 | while (--month) | |
116 | tval += dmsize[month]; | |
117 | tval += day; | |
118 | tval = tval * HOURSPERDAY * MINSPERHOUR * SECSPERMIN; | |
119 | tval -= lt->tm_gmtoff; | |
120 | *store = tval; | |
121 | return(0); | |
122 | } | |
123 | ||
124 | char * | |
125 | ok_shell(name) | |
126 | register char *name; | |
127 | { | |
128 | register char *p, *sh; | |
129 | char *getusershell(); | |
130 | ||
131 | setusershell(); | |
132 | while (sh = getusershell()) { | |
133 | if (!strcmp(name, sh)) | |
134 | return(name); | |
135 | /* allow just shell name, but use "real" path */ | |
136 | if ((p = rindex(sh, '/')) && !strcmp(name, p + 1)) | |
137 | return(sh); | |
138 | } | |
139 | return(NULL); | |
140 | } |