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/*
* Copyright (c) 2007, Cameron Rich
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the axTLS project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "axhttp.h"
struct day_mon_map
{
const char* s;
uint8_t l;
};
static struct day_mon_map wday_tab[] =
{
{ "Sun", 0 }, { "Mon", 1 }, { "Tue", 2 }, { "Wed", 3 },
{ "Thu", 4 }, { "Fri", 5 }, { "Sat", 6 },
};
static struct day_mon_map mon_tab[] =
{
{ "Jan", 0 }, { "Feb", 1 }, { "Mar", 2 }, { "Apr", 3 },
{ "May", 4 }, { "Jun", 5 }, { "Jul", 6 }, { "Aug", 7 },
{ "Sep", 8 }, { "Oct", 9 }, { "Nov", 10 }, { "Dec", 11 },
};
static int day_mon_map_compare(const char *v1, const char *v2)
{
return strcmp(((struct day_mon_map*)v1)->s, ((struct day_mon_map*)v2)->s);
}
void tdate_init(void)
{
qsort(wday_tab, sizeof(wday_tab)/sizeof(struct day_mon_map),
sizeof(struct day_mon_map),
(int (*)(const void *, const void *))day_mon_map_compare);
qsort(mon_tab, sizeof(mon_tab)/sizeof(struct day_mon_map),
sizeof(struct day_mon_map),
(int (*)(const void *, const void *))day_mon_map_compare);
}
static int8_t day_mon_map_search(const char* str,
const struct day_mon_map* tab, int n)
{
struct day_mon_map *search = bsearch(&str, tab, n,
sizeof(struct day_mon_map),
(int (*)(const void *, const void *))day_mon_map_compare);
return search ? search->l : -1;
}
time_t tdate_parse(const char* str)
{
struct tm tm;
char str_mon[4], str_wday[4];
int tm_sec, tm_min, tm_hour, tm_mday, tm_year;
/* Initialize. */
memset(&tm, 0, sizeof(struct tm));
/* wdy, DD mth YY HH:MM:SS GMT */
if ((sscanf(str, "%3[a-zA-Z], %d %3[a-zA-Z] %d %d:%d:%d GMT",
str_wday, &tm_mday, str_mon, &tm_year, &tm_hour, &tm_min,
&tm_sec) == 7) ||
/* wdy mth DD HH:MM:SS YY */
(sscanf(str, "%3[a-zA-Z] %3[a-zA-Z] %d %d:%d:%d %d",
str_wday, str_mon, &tm_mday, &tm_hour, &tm_min, &tm_sec,
&tm_year) == 7))
{
int8_t tm_wday = day_mon_map_search(str_wday, wday_tab,
sizeof(wday_tab)/sizeof(struct day_mon_map));
int8_t tm_mon = day_mon_map_search(str_mon, mon_tab,
sizeof(mon_tab)/sizeof(struct day_mon_map));
if (tm_wday < 0 || tm_mon < 0)
return -1;
tm.tm_wday = tm_wday;
tm.tm_mon = tm_mon;
tm.tm_mday = tm_mday;
tm.tm_hour = tm_hour;
tm.tm_min = tm_min;
tm.tm_sec = tm_sec;
tm.tm_year = tm_year - 1900;
return mktime(&tm);
}
return -1; /* error */
}
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