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/*-
* Copyright (c) 1996 by
* David Nugent <davidn@blaze.net.au>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. This work was done expressly for inclusion into FreeBSD. Other use
* is permitted provided this notation is included.
* 4. Absolutely no warranty of function or purpose is made by the authors.
* 5. Modifications may be freely made to this file providing the above
* conditions are met.
*
* Login period parsing and comparison functions.
*
* $Id: login_times.c,v 1.5 1997/05/10 18:55:38 davidn Exp $
*/
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include <sys/types.h>
#include <login_cap.h>
static struct
{
const char *dw;
u_char cn;
u_char fl;
} dws[] =
{
{ "su", 2, LTM_SUN }, { "mo", 2, LTM_MON }, { "tu", 2, LTM_TUE },
{ "we", 2, LTM_WED }, { "th", 2, LTM_THU }, { "fr", 2, LTM_FRI },
{ "sa", 2, LTM_SAT }, { "any",3, LTM_ANY }, { "all",3, LTM_ANY },
{ "wk", 2, LTM_WK }, { "wd", 2, LTM_WD }, { NULL, 0, 0 }
};
static char *
parse_time(char * ptr, u_short * t)
{
u_short val;
for (val = 0; *ptr && isdigit(*ptr); ptr++)
val = (u_short)(val * 10 + (*ptr - '0'));
*t = (u_short)((val / 100) * 60 + (val % 100));
return ptr;
}
login_time_t
parse_lt(const char * str)
{
login_time_t t;
memset(&t, 0, sizeof t);
t.lt_dow = LTM_NONE;
if (str && *str && strcmp(str, "Never") != 0 && strcmp(str, "None") != 0) {
int i;
login_time_t m = t;
char *p;
char buf[64];
/* Make local copy and force lowercase to simplify parsing */
p = strncpy(buf, str, sizeof buf);
buf[sizeof buf - 1] = '\0';
for (i = 0; buf[i]; i++)
buf[i] = (char)tolower(buf[i]);
while (isalpha(*p)) {
i = 0;
while (dws[i].dw && strncmp(p, dws[i].dw, dws[i].cn) != 0)
i++;
if (dws[i].dw == NULL)
break;
m.lt_dow |= dws[i].fl;
p += dws[i].cn;
}
if (m.lt_dow == LTM_NONE) /* No (valid) prefix, assume any */
m.lt_dow |= LTM_ANY;
if (isdigit(*p))
p = parse_time(p, &m.lt_start);
else
m.lt_start = 0;
if (*p == '-')
p = parse_time(++p, &m.lt_end);
else
m.lt_end = 1440;
t = m;
}
return t;
}
int
in_ltm(const login_time_t * ltm, struct tm * tt, time_t * ends)
{
int rc = 0;
if (tt != NULL) {
/* First, examine the day of the week */
if ((u_char)(0x01 << tt->tm_wday) & ltm->lt_dow) {
/* Convert `current' time to minute of the day */
u_short now = (u_short)((tt->tm_hour * 60) + tt->tm_min);
if (tt->tm_sec > 30)
++now;
if (now >= ltm->lt_start && now < ltm->lt_end) {
rc = 2;
if (ends != NULL) {
/* If requested, return ending time for this period */
tt->tm_hour = (int)(ltm->lt_end / 60);
tt->tm_min = (int)(ltm->lt_end % 60);
*ends = mktime(tt);
}
}
}
}
return rc;
}
int
in_lt(const login_time_t * ltm, time_t * t)
{
return in_ltm(ltm, localtime(t), t);
}
int
in_ltms(const login_time_t * ltm, struct tm * tm, time_t * t)
{
int i = 0;
while (i < LC_MAXTIMES && ltm[i].lt_dow != LTM_NONE) {
if (in_ltm(ltm + i, tm, t))
return i;
i++;
}
return -1;
}
int
in_lts(const login_time_t * ltm, time_t * t)
{
return in_ltms(ltm, localtime(t), t);
}
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