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      1 /* Written by Richard Levitte (richard (at) levitte.org) for the OpenSSL
      2  * project 2001.
      3  * Written by Dr Stephen N Henson (steve (at) openssl.org) for the OpenSSL
      4  * project 2008.
      5  */
      6 /* ====================================================================
      7  * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  *
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  *
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in
     18  *    the documentation and/or other materials provided with the
     19  *    distribution.
     20  *
     21  * 3. All advertising materials mentioning features or use of this
     22  *    software must display the following acknowledgment:
     23  *    "This product includes software developed by the OpenSSL Project
     24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
     25  *
     26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     27  *    endorse or promote products derived from this software without
     28  *    prior written permission. For written permission, please contact
     29  *    licensing (at) OpenSSL.org.
     30  *
     31  * 5. Products derived from this software may not be called "OpenSSL"
     32  *    nor may "OpenSSL" appear in their names without prior written
     33  *    permission of the OpenSSL Project.
     34  *
     35  * 6. Redistributions of any form whatsoever must retain the following
     36  *    acknowledgment:
     37  *    "This product includes software developed by the OpenSSL Project
     38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
     39  *
     40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
     41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
     44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     51  * OF THE POSSIBILITY OF SUCH DAMAGE.
     52  * ====================================================================
     53  *
     54  * This product includes cryptographic software written by Eric Young
     55  * (eay (at) cryptsoft.com).  This product includes software written by Tim
     56  * Hudson (tjh (at) cryptsoft.com). */
     57 
     58 #ifndef OPENSSL_HEADER_TIME_SUPPORT_H
     59 #define OPENSSL_HEADER_TIME_SUPPORT_H
     60 
     61 #include <openssl/base.h>
     62 
     63 
     64 #if defined(__cplusplus)
     65 extern "C" {
     66 #endif
     67 
     68 
     69 /* Wrapper functions for time functions. */
     70 
     71 
     72 /* OPENSSL_gmtime wraps |gmtime_r|. See the manual page for that function. */
     73 struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result);
     74 
     75 /* OPENSSL_gmtime_adj updates |tm| by adding |offset_day| days and |offset_sec|
     76  * seconds. */
     77 int OPENSSL_gmtime_adj(struct tm *tm, int offset_day, long offset_sec);
     78 
     79 /* OPENSSL_gmtime_diff calculates the difference between |from| and |to| and
     80  * outputs the difference as a number of days and seconds in |*out_days| and
     81  * |*out_secs|. */
     82 int OPENSSL_gmtime_diff(int *out_days, int *out_secs, const struct tm *from,
     83                         const struct tm *to);
     84 
     85 
     86 #if defined(__cplusplus)
     87 }  /* extern C */
     88 #endif
     89 
     90 #endif  /* OPENSSL_HEADER_TIME_SUPPORT_H */
     91