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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 16:44:12 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 16:44:12 +0000 |
commit | cda5d340e78555d2542be9264137319c5308e798 (patch) | |
tree | 7bc11f3311859ceee697bba8b60a5cb79a03473b /lib/replace/timegm.c | |
parent | Initial commit. (diff) | |
download | talloc-cda5d340e78555d2542be9264137319c5308e798.tar.xz talloc-cda5d340e78555d2542be9264137319c5308e798.zip |
Adding upstream version 2.4.2.upstream/2.4.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/replace/timegm.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/lib/replace/timegm.c b/lib/replace/timegm.c new file mode 100644 index 0000000..93263a2 --- /dev/null +++ b/lib/replace/timegm.c @@ -0,0 +1,78 @@ +/* + * Copyright (c) 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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. + */ + +/* + adapted for Samba4 by Andrew Tridgell +*/ + +#include "replace.h" +#include "system/time.h" + +static int is_leap(unsigned y) +{ + y += 1900; + return (y % 4) == 0 && ((y % 100) != 0 || (y % 400) == 0); +} + +time_t rep_timegm(struct tm *tm) +{ + static const unsigned ndays[2][12] ={ + {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, + {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}}; + time_t res = 0; + unsigned i; + + if (tm->tm_mon > 12 || + tm->tm_mon < 0 || + tm->tm_mday > 31 || + tm->tm_min > 60 || + tm->tm_sec > 60 || + tm->tm_hour > 24) { + /* invalid tm structure */ + return 0; + } + + for (i = 70; i < tm->tm_year; ++i) + res += is_leap(i) ? 366 : 365; + + for (i = 0; i < tm->tm_mon; ++i) + res += ndays[is_leap(tm->tm_year)][i]; + res += tm->tm_mday - 1; + res *= 24; + res += tm->tm_hour; + res *= 60; + res += tm->tm_min; + res *= 60; + res += tm->tm_sec; + return res; +} |