2 * Copyright (c) 1996 by
3 * David Nugent <davidn@blaze.net.au>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, is permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice immediately at the beginning of the file, without modification,
11 * this list of conditions, and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. This work was done expressly for inclusion into FreeBSD. Other use
16 * is permitted provided this notation is included.
17 * 4. Absolutely no warranty of function or purpose is made by the authors.
18 * 5. Modifications may be freely made to this file providing the above
21 * Login period parsing and comparison functions.
23 * $FreeBSD: head/lib/libutil/login_times.c 252376 2013-06-29 15:52:48Z kientzle $
26 #include <sys/types.h>
28 #include <login_cap.h>
40 { "su", 2, LTM_SUN }, { "mo", 2, LTM_MON }, { "tu", 2, LTM_TUE },
41 { "we", 2, LTM_WED }, { "th", 2, LTM_THU }, { "fr", 2, LTM_FRI },
42 { "sa", 2, LTM_SAT }, { "any",3, LTM_ANY }, { "all",3, LTM_ANY },
43 { "wk", 2, LTM_WK }, { "wd", 2, LTM_WD }, { NULL, 0, 0 }
47 parse_time(char * ptr, u_short * t)
51 for (val = 0; *ptr && isdigit(*ptr); ptr++)
52 val = (u_short)(val * 10 + (*ptr - '0'));
54 *t = (u_short)((val / 100) * 60 + (val % 100));
61 parse_lt(const char *str)
65 memset(&t, 0, sizeof t);
67 if (str && *str && strcmp(str, "Never") != 0 && strcmp(str, "None") != 0) {
73 /* Make local copy and force lowercase to simplify parsing */
74 strlcpy(buf, str, sizeof buf);
75 for (i = 0; buf[i]; i++)
76 buf[i] = (char)tolower(buf[i]);
82 while (dws[i].dw && strncmp(p, dws[i].dw, dws[i].cn) != 0)
84 if (dws[i].dw == NULL)
86 m.lt_dow |= dws[i].fl;
90 if (m.lt_dow == LTM_NONE) /* No (valid) prefix, assume any */
94 p = parse_time(p, &m.lt_start);
98 p = parse_time(p + 1, &m.lt_end);
109 in_ltm(const login_time_t *ltm, struct tm *tt, time_t *ends)
114 /* First, examine the day of the week */
115 if ((u_char)(0x01 << tt->tm_wday) & ltm->lt_dow) {
116 /* Convert `current' time to minute of the day */
117 u_short now = (u_short)((tt->tm_hour * 60) + tt->tm_min);
121 if (now >= ltm->lt_start && now < ltm->lt_end) {
124 /* If requested, return ending time for this period */
125 tt->tm_hour = (int)(ltm->lt_end / 60);
126 tt->tm_min = (int)(ltm->lt_end % 60);
137 in_lt(const login_time_t *ltm, time_t *t)
140 return (in_ltm(ltm, localtime(t), t));
144 in_ltms(const login_time_t *ltm, struct tm *tm, time_t *t)
148 while (i < LC_MAXTIMES && ltm[i].lt_dow != LTM_NONE) {
149 if (in_ltm(ltm + i, tm, t))
157 in_lts(const login_time_t *ltm, time_t *t)
160 return (in_ltms(ltm, localtime(t), t));