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72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
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/*
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* Copyright (c) 1997 Kungliga Tekniska H<EFBFBD>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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adapted for Samba4 by Andrew Tridgell
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*/
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#include "includes.h"
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#ifndef HAVE_TIMEGM
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static int is_leap(unsigned y)
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{
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y += 1900;
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return (y % 4) == 0 && ((y % 100) != 0 || (y % 400) == 0);
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}
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time_t timegm(struct tm *tm)
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{
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static const unsigned ndays[2][12] ={
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{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
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{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}};
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time_t res = 0;
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unsigned i;
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for (i = 70; i < tm->tm_year; ++i)
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res += is_leap(i) ? 366 : 365;
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for (i = 0; i < tm->tm_mon; ++i)
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res += ndays[is_leap(tm->tm_year)][i];
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res += tm->tm_mday - 1;
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res *= 24;
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res += tm->tm_hour;
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res *= 60;
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res += tm->tm_min;
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res *= 60;
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res += tm->tm_sec;
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return res;
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}
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#endif /* HAVE_TIMEGM */
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