1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include "apr_portable.h"
20 #include "apr_private.h"
21 #include "apr_strings.h"
23 /* private APR headers */
24 #include "apr_arch_internal_time.h"
26 /* System Headers required for time library */
27 #if APR_HAVE_SYS_TIME_H
36 /* End System Headers */
38 #if !defined(HAVE_GMTOFF) && !defined(HAVE___OFFSET)
39 static apr_int32_t server_gmt_offset;
40 #endif /* if !defined(HAVE_GMTOFF) && !defined(HAVE___OFFSET) */
42 static apr_int32_t get_offset(struct tm *tm)
46 #elif defined(HAVE___OFFSET)
47 return tm->__tm_gmtoff;
50 /* Need to adjust the global variable each time otherwise
51 the web server would have to be restarted when daylight
55 return server_gmt_offset + daylightOffset;
59 return server_gmt_offset + 3600;
61 return server_gmt_offset;
65 APR_DECLARE(apr_status_t) apr_time_ansi_put(apr_time_t *result,
68 *result = (apr_time_t)input * APR_USEC_PER_SEC;
72 /* NB NB NB NB This returns GMT!!!!!!!!!! */
73 APR_DECLARE(apr_time_t) apr_time_now(void)
76 gettimeofday(&tv, NULL);
77 return tv.tv_sec * APR_USEC_PER_SEC + tv.tv_usec;
80 static void explode_time(apr_time_exp_t *xt, apr_time_t t,
81 apr_int32_t offset, int use_localtime)
84 time_t tt = (t / APR_USEC_PER_SEC) + offset;
85 xt->tm_usec = t % APR_USEC_PER_SEC;
87 #if APR_HAS_THREADS && defined (_POSIX_THREAD_SAFE_FUNCTIONS)
89 localtime_r(&tt, &tm);
99 xt->tm_sec = tm.tm_sec;
100 xt->tm_min = tm.tm_min;
101 xt->tm_hour = tm.tm_hour;
102 xt->tm_mday = tm.tm_mday;
103 xt->tm_mon = tm.tm_mon;
104 xt->tm_year = tm.tm_year;
105 xt->tm_wday = tm.tm_wday;
106 xt->tm_yday = tm.tm_yday;
107 xt->tm_isdst = tm.tm_isdst;
108 xt->tm_gmtoff = get_offset(&tm);
111 APR_DECLARE(apr_status_t) apr_time_exp_tz(apr_time_exp_t *result,
112 apr_time_t input, apr_int32_t offs)
114 explode_time(result, input, offs, 0);
115 result->tm_gmtoff = offs;
119 APR_DECLARE(apr_status_t) apr_time_exp_gmt(apr_time_exp_t *result,
122 return apr_time_exp_tz(result, input, 0);
125 APR_DECLARE(apr_status_t) apr_time_exp_lt(apr_time_exp_t *result,
129 /* EMX gcc (OS/2) has a timezone global we can use */
130 return apr_time_exp_tz(result, input, -timezone);
132 explode_time(result, input, 0, 1);
137 APR_DECLARE(apr_status_t) apr_time_exp_get(apr_time_t *t, apr_time_exp_t *xt)
139 apr_time_t year = xt->tm_year;
141 static const int dayoffset[12] =
142 {306, 337, 0, 31, 61, 92, 122, 153, 184, 214, 245, 275};
144 /* shift new year to 1st March in order to make leap year calc easy */
149 /* Find number of days since 1st March 1900 (in the Gregorian calendar). */
151 days = year * 365 + year / 4 - year / 100 + (year / 100 + 3) / 4;
152 days += dayoffset[xt->tm_mon] + xt->tm_mday - 1;
153 days -= 25508; /* 1 jan 1970 is 25508 days since 1 mar 1900 */
154 days = ((days * 24 + xt->tm_hour) * 60 + xt->tm_min) * 60 + xt->tm_sec;
159 *t = days * APR_USEC_PER_SEC + xt->tm_usec;
163 APR_DECLARE(apr_status_t) apr_time_exp_gmt_get(apr_time_t *t,
166 apr_status_t status = apr_time_exp_get(t, xt);
167 if (status == APR_SUCCESS)
168 *t -= (apr_time_t) xt->tm_gmtoff * APR_USEC_PER_SEC;
172 APR_DECLARE(apr_status_t) apr_os_imp_time_get(apr_os_imp_time_t **ostime,
175 (*ostime)->tv_usec = *aprtime % APR_USEC_PER_SEC;
176 (*ostime)->tv_sec = *aprtime / APR_USEC_PER_SEC;
180 APR_DECLARE(apr_status_t) apr_os_exp_time_get(apr_os_exp_time_t **ostime,
181 apr_time_exp_t *aprtime)
183 (*ostime)->tm_sec = aprtime->tm_sec;
184 (*ostime)->tm_min = aprtime->tm_min;
185 (*ostime)->tm_hour = aprtime->tm_hour;
186 (*ostime)->tm_mday = aprtime->tm_mday;
187 (*ostime)->tm_mon = aprtime->tm_mon;
188 (*ostime)->tm_year = aprtime->tm_year;
189 (*ostime)->tm_wday = aprtime->tm_wday;
190 (*ostime)->tm_yday = aprtime->tm_yday;
191 (*ostime)->tm_isdst = aprtime->tm_isdst;
194 (*ostime)->tm_gmtoff = aprtime->tm_gmtoff;
195 #elif defined(HAVE__OFFSET)
196 (*ostime)->__tm_gmtoff = aprtime->tm_gmtoff;
202 APR_DECLARE(apr_status_t) apr_os_imp_time_put(apr_time_t *aprtime,
203 apr_os_imp_time_t **ostime,
206 *aprtime = (*ostime)->tv_sec * APR_USEC_PER_SEC + (*ostime)->tv_usec;
210 APR_DECLARE(apr_status_t) apr_os_exp_time_put(apr_time_exp_t *aprtime,
211 apr_os_exp_time_t **ostime,
214 aprtime->tm_sec = (*ostime)->tm_sec;
215 aprtime->tm_min = (*ostime)->tm_min;
216 aprtime->tm_hour = (*ostime)->tm_hour;
217 aprtime->tm_mday = (*ostime)->tm_mday;
218 aprtime->tm_mon = (*ostime)->tm_mon;
219 aprtime->tm_year = (*ostime)->tm_year;
220 aprtime->tm_wday = (*ostime)->tm_wday;
221 aprtime->tm_yday = (*ostime)->tm_yday;
222 aprtime->tm_isdst = (*ostime)->tm_isdst;
225 aprtime->tm_gmtoff = (*ostime)->tm_gmtoff;
226 #elif defined(HAVE__OFFSET)
227 aprtime->tm_gmtoff = (*ostime)->__tm_gmtoff;
233 APR_DECLARE(void) apr_sleep(apr_interval_time_t t)
239 #elif defined(NETWARE)
243 tv.tv_usec = t % APR_USEC_PER_SEC;
244 tv.tv_sec = t / APR_USEC_PER_SEC;
245 select(0, NULL, NULL, NULL, &tv);
250 APR_DECLARE(apr_status_t) apr_os2_time_to_apr_time(apr_time_t *result,
256 memset(&tmpdate, 0, sizeof(tmpdate));
257 tmpdate.tm_hour = os2time.hours;
258 tmpdate.tm_min = os2time.minutes;
259 tmpdate.tm_sec = os2time.twosecs * 2;
261 tmpdate.tm_mday = os2date.day;
262 tmpdate.tm_mon = os2date.month - 1;
263 tmpdate.tm_year = os2date.year + 80;
264 tmpdate.tm_isdst = -1;
266 *result = mktime(&tmpdate) * APR_USEC_PER_SEC;
272 APR_DECLARE(void) apr_netware_setup_time(void)
275 server_gmt_offset = -TZONE;
278 APR_DECLARE(void) apr_unix_setup_time(void)
280 #if !defined(HAVE_GMTOFF) && !defined(HAVE___OFFSET)
281 /* Precompute the offset from GMT on systems where it's not
284 Note: This offset is normalized to be independent of daylight
285 savings time; if the calculation happens to be done in a
286 time/place where a daylight savings adjustment is in effect,
287 the returned offset has the same value that it would have
288 in the same location if daylight savings were not in effect.
289 The reason for this is that the returned offset can be
290 applied to a past or future timestamp in explode_time(),
291 so the DST adjustment obtained from the current time won't
292 necessarily be applicable.
294 mktime() is the inverse of localtime(); so, presumably,
295 passing in a struct tm made by gmtime() let's us calculate
296 the true GMT offset. However, there's a catch: if daylight
297 savings is in effect, gmtime()will set the tm_isdst field
298 and confuse mktime() into returning a time that's offset
299 by one hour. In that case, we must adjust the calculated GMT
308 gettimeofday(&now, NULL);
312 #if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS)
317 t.tm_isdst = 0; /* we know this GMT time isn't daylight-savings */
319 server_gmt_offset = (apr_int32_t) difftime(t1, t2);
325 /* A noop on all known Unix implementations */
326 APR_DECLARE(void) apr_time_clock_hires(apr_pool_t *p)
332 APR_DECLARE(apr_status_t) apr_explode_time(apr_time_exp_t *result,
336 return apr_time_exp_tz(result, input, offs);
340 APR_DECLARE(apr_status_t) apr_explode_localtime(apr_time_exp_t *result,
343 return apr_time_exp_lt(result, input);
347 APR_DECLARE(apr_status_t) apr_implode_gmt(apr_time_t *t, apr_time_exp_t *xt)
349 return apr_time_exp_gmt_get(t, xt);